Add v0.9.2 to the changelog (#1642)

Co-authored-by: stasatdaglabs <39559713+stasatdaglabs@users.noreply.github.com>

.github/workflows/go.yml

@@ -63,9 +63,6 @@ jobs:
         with:
           go-version: 1.16
 
-      - name: Delete the stability tests from coverage
-        run: rm -r stability-tests
-
       - name: Create coverage file
         run: go test -v -covermode=atomic -coverpkg=./... -coverprofile coverage.txt ./...
 

README.md

@@ -56,7 +56,7 @@ $ kaspad
 ```
 
 ## Discord
-Join our discord server using the following link: https://discord.gg/YNYnNN5Pf2
+Join our discord server using the following link: https://discord.gg/WmGhhzk
 
 ## Issue Tracker
 

app/app.go

@@ -171,7 +171,7 @@ func doUpgrades() error {
 
 // dbPath returns the path to the block database given a database type.
 func databasePath(cfg *config.Config) string {
-	return filepath.Join(cfg.AppDir, "data")
+	return filepath.Join(cfg.DataDir, "db")
 }
 
 func removeDatabase(cfg *config.Config) error {

app/appmessage/domainconverters.go

@@ -83,6 +83,7 @@ func DomainTransactionToMsgTx(domainTransaction *externalapi.DomainTransaction)
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: domainTransaction.SubnetworkID,
 		Gas:          domainTransaction.Gas,
+		PayloadHash:  domainTransaction.PayloadHash,
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -132,6 +133,7 @@ func MsgTxToDomainTransaction(msgTx *MsgTx) *externalapi.DomainTransaction {
 		LockTime:     msgTx.LockTime,
 		SubnetworkID: msgTx.SubnetworkID,
 		Gas:          msgTx.Gas,
+		PayloadHash:  msgTx.PayloadHash,
 		Payload:      payload,
 	}
 }
@@ -196,6 +198,10 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 	if err != nil {
 		return nil, err
 	}
+	payloadHash, err := externalapi.NewDomainHashFromString(rpcTransaction.PayloadHash)
+	if err != nil {
+		return nil, err
+	}
 	payload, err := hex.DecodeString(rpcTransaction.Payload)
 	if err != nil {
 		return nil, err
@@ -208,6 +214,7 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 		LockTime:     rpcTransaction.LockTime,
 		SubnetworkID: *subnetworkID,
 		Gas:          rpcTransaction.LockTime,
+		PayloadHash:  *payloadHash,
 		Payload:      payload,
 	}, nil
 }
@@ -237,6 +244,7 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		}
 	}
 	subnetworkID := transaction.SubnetworkID.String()
+	payloadHash := transaction.PayloadHash.String()
 	payload := hex.EncodeToString(transaction.Payload)
 	return &RPCTransaction{
 		Version:      transaction.Version,
@@ -245,6 +253,7 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		LockTime:     transaction.LockTime,
 		SubnetworkID: subnetworkID,
 		Gas:          transaction.LockTime,
+		PayloadHash:  payloadHash,
 		Payload:      payload,
 	}
 }
@@ -265,7 +274,7 @@ func OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(
 				outpointAndUTXOEntryPair.UTXOEntry.Amount,
 				outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey,
 				outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase,
-				outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore,
+				outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore,
 			),
 		}
 	}
@@ -288,7 +297,7 @@ func DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(
 				Amount:          outpointAndUTXOEntryPair.UTXOEntry.Amount(),
 				ScriptPublicKey: outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey(),
 				IsCoinbase:      outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase(),
-				BlockDAAScore:   outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore(),
+				BlockBlueScore:  outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore(),
 			},
 		}
 	}

app/appmessage/p2p_msgblock.go

@@ -15,6 +15,19 @@ import (
 // backing array multiple times.
 const defaultTransactionAlloc = 2048
 
+// MaxMassAcceptedByBlock is the maximum total transaction mass a block may accept.
+const MaxMassAcceptedByBlock = 10000000
+
+// MaxMassPerTx is the maximum total mass a transaction may have.
+const MaxMassPerTx = MaxMassAcceptedByBlock / 2
+
+// MaxTxPerBlock is the maximum number of transactions that could
+// possibly fit into a block.
+const MaxTxPerBlock = (MaxMassAcceptedByBlock / minTxPayload) + 1
+
+// MaxBlockParents is the maximum allowed number of parents for block.
+const MaxBlockParents = 10
+
 // TxLoc holds locator data for the offset and length of where a transaction is
 // located within a MsgBlock data buffer.
 type TxLoc struct {

app/appmessage/p2p_msgpruningpointutxosetchunk.go

@@ -31,6 +31,6 @@ type OutpointAndUTXOEntryPair struct {
 type UTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *externalapi.ScriptPublicKey
-	BlockDAAScore   uint64
+	BlockBlueScore  uint64
 	IsCoinbase      bool
 }

app/appmessage/p2p_msgtx.go

@@ -6,6 +6,7 @@ package appmessage
 
 import (
 	"encoding/binary"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"strconv"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -132,6 +133,7 @@ type MsgTx struct {
 	LockTime     uint64
 	SubnetworkID externalapi.DomainSubnetworkID
 	Gas          uint64
+	PayloadHash  externalapi.DomainHash
 	Payload      []byte
 }
 
@@ -177,6 +179,7 @@ func (msg *MsgTx) Copy() *MsgTx {
 		LockTime:     msg.LockTime,
 		SubnetworkID: msg.SubnetworkID,
 		Gas:          msg.Gas,
+		PayloadHash:  msg.PayloadHash,
 	}
 
 	if msg.Payload != nil {
@@ -277,12 +280,18 @@ func newMsgTx(version uint16, txIn []*TxIn, txOut []*TxOut, subnetworkID *extern
 		txOut = make([]*TxOut, 0, defaultTxInOutAlloc)
 	}
 
+	var payloadHash externalapi.DomainHash
+	if *subnetworkID != subnetworks.SubnetworkIDNative {
+		payloadHash = *hashes.PayloadHash(payload)
+	}
+
 	return &MsgTx{
 		Version:      version,
 		TxIn:         txIn,
 		TxOut:        txOut,
 		SubnetworkID: *subnetworkID,
 		Gas:          gas,
+		PayloadHash:  payloadHash,
 		Payload:      payload,
 		LockTime:     lockTime,
 	}

app/appmessage/p2p_msgtx_test.go

@@ -133,8 +133,8 @@ func TestTx(t *testing.T) {
 
 // TestTxHash tests the ability to generate the hash of a transaction accurately.
 func TestTxHashAndID(t *testing.T) {
-	txHash1Str := "93663e597f6c968d32d229002f76408edf30d6a0151ff679fc729812d8cb2acc"
-	txID1Str := "24079c6d2bdf602fc389cc307349054937744a9c8dc0f07c023e6af0e949a4e7"
+	txHash1Str := "4bee9ee495bd93a755de428376bd582a2bb6ec37c041753b711c0606d5745c13"
+	txID1Str := "f868bd20e816256b80eac976821be4589d24d21141bd1cec6e8005d0c16c6881"
 	wantTxID1, err := transactionid.FromString(txID1Str)
 	if err != nil {
 		t.Fatalf("NewTxIDFromStr: %v", err)
@@ -185,14 +185,14 @@ func TestTxHashAndID(t *testing.T) {
 			spew.Sprint(tx1ID), spew.Sprint(wantTxID1))
 	}
 
-	hash2Str := "8dafd1bec24527d8e3b443ceb0a3b92fffc0d60026317f890b2faf5e9afc177a"
+	hash2Str := "cb1bdb4a83d4885535fb3cceb5c96597b7df903db83f0ffcd779d703affd8efd"
 	wantHash2, err := externalapi.NewDomainHashFromString(hash2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)
 		return
 	}
 
-	id2Str := "89ffb49474637502d9059af38b8a95fc2f0d3baef5c801d7a9b9c8830671b711"
+	id2Str := "ca080073d4ddf5b84443a0964af633f3c70a5b290fd3bc35a7e6f93fd33f9330"
 	wantID2, err := transactionid.FromString(id2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)

app/appmessage/p2p_msgversion_test.go

@@ -19,7 +19,7 @@ func TestVersion(t *testing.T) {
 
 	// Create version message data.
 	tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 16111}
-	me := NewNetAddress(tcpAddrMe)
+	me := NewNetAddress(tcpAddrMe, SFNodeNetwork)
 	generatedID, err := id.GenerateID()
 	if err != nil {
 		t.Fatalf("id.GenerateID: %s", err)

app/appmessage/p2p_netaddress.go

@@ -15,6 +15,9 @@ type NetAddress struct {
 	// Last time the address was seen.
 	Timestamp mstime.Time
 
+	// Bitfield which identifies the services supported by the address.
+	Services ServiceFlag
+
 	// IP address of the peer.
 	IP net.IP
 
@@ -23,6 +26,17 @@ type NetAddress struct {
 	Port uint16
 }
 
+// HasService returns whether the specified service is supported by the address.
+func (na *NetAddress) HasService(service ServiceFlag) bool {
+	return na.Services&service == service
+}
+
+// AddService adds service as a supported service by the peer generating the
+// message.
+func (na *NetAddress) AddService(service ServiceFlag) {
+	na.Services |= service
+}
+
 // TCPAddress converts the NetAddress to *net.TCPAddr
 func (na *NetAddress) TCPAddress() *net.TCPAddr {
 	return &net.TCPAddr{
@@ -33,19 +47,20 @@ func (na *NetAddress) TCPAddress() *net.TCPAddr {
 
 // NewNetAddressIPPort returns a new NetAddress using the provided IP, port, and
 // supported services with defaults for the remaining fields.
-func NewNetAddressIPPort(ip net.IP, port uint16) *NetAddress {
-	return NewNetAddressTimestamp(mstime.Now(), ip, port)
+func NewNetAddressIPPort(ip net.IP, port uint16, services ServiceFlag) *NetAddress {
+	return NewNetAddressTimestamp(mstime.Now(), services, ip, port)
 }
 
 // NewNetAddressTimestamp returns a new NetAddress using the provided
 // timestamp, IP, port, and supported services. The timestamp is rounded to
 // single millisecond precision.
 func NewNetAddressTimestamp(
-	timestamp mstime.Time, ip net.IP, port uint16) *NetAddress {
+	timestamp mstime.Time, services ServiceFlag, ip net.IP, port uint16) *NetAddress {
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	na := NetAddress{
 		Timestamp: timestamp,
+		Services:  services,
 		IP:        ip,
 		Port:      port,
 	}
@@ -54,6 +69,6 @@ func NewNetAddressTimestamp(
 
 // NewNetAddress returns a new NetAddress using the provided TCP address and
 // supported services with defaults for the remaining fields.
-func NewNetAddress(addr *net.TCPAddr) *NetAddress {
-	return NewNetAddressIPPort(addr.IP, uint16(addr.Port))
+func NewNetAddress(addr *net.TCPAddr, services ServiceFlag) *NetAddress {
+	return NewNetAddressIPPort(addr.IP, uint16(addr.Port), services)
 }

app/appmessage/p2p_netaddress_test.go

@@ -15,7 +15,7 @@ func TestNetAddress(t *testing.T) {
 	port := 16111
 
 	// Test NewNetAddress.
-	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port})
+	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port}, 0)
 
 	// Ensure we get the same ip, port, and services back out.
 	if !na.IP.Equal(ip) {
@@ -25,4 +25,21 @@ func TestNetAddress(t *testing.T) {
 		t.Errorf("NetNetAddress: wrong port - got %v, want %v", na.Port,
 			port)
 	}
+	if na.Services != 0 {
+		t.Errorf("NetNetAddress: wrong services - got %v, want %v",
+			na.Services, 0)
+	}
+	if na.HasService(SFNodeNetwork) {
+		t.Errorf("HasService: SFNodeNetwork service is set")
+	}
+
+	// Ensure adding the full service node flag works.
+	na.AddService(SFNodeNetwork)
+	if na.Services != SFNodeNetwork {
+		t.Errorf("AddService: wrong services - got %v, want %v",
+			na.Services, SFNodeNetwork)
+	}
+	if !na.HasService(SFNodeNetwork) {
+		t.Errorf("HasService: SFNodeNetwork service not set")
+	}
 }

app/appmessage/rpc_get_block.go

@@ -70,6 +70,7 @@ type TransactionVerboseData struct {
 	LockTime                  uint64
 	SubnetworkID              string
 	Gas                       uint64
+	PayloadHash               string
 	Payload                   string
 	TransactionVerboseInputs  []*TransactionVerboseInput
 	TransactionVerboseOutputs []*TransactionVerboseOutput

app/appmessage/rpc_get_info.go

@@ -20,8 +20,7 @@ func NewGeInfoRequestMessage() *GetInfoRequestMessage {
 // its respective RPC message
 type GetInfoResponseMessage struct {
 	baseMessage
-	P2PID       string
-	MempoolSize uint64
+	P2PID string
 
 	Error *RPCError
 }
@@ -32,9 +31,8 @@ func (msg *GetInfoResponseMessage) Command() MessageCommand {
 }
 
 // NewGetInfoResponseMessage returns a instance of the message
-func NewGetInfoResponseMessage(p2pID string, mempoolSize uint64) *GetInfoResponseMessage {
+func NewGetInfoResponseMessage(p2pID string) *GetInfoResponseMessage {
 	return &GetInfoResponseMessage{
-		P2PID:       p2pID,
-		MempoolSize: mempoolSize,
+		P2PID: p2pID,
 	}
 }

app/appmessage/rpc_submit_transaction.go

@@ -49,6 +49,7 @@ type RPCTransaction struct {
 	LockTime     uint64
 	SubnetworkID string
 	Gas          uint64
+	PayloadHash  string
 	Payload      string
 }
 
@@ -85,6 +86,6 @@ type RPCOutpoint struct {
 type RPCUTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
-	BlockDAAScore   uint64
+	BlockBlueScore  uint64
 	IsCoinbase      bool
 }

app/component_manager.go

@@ -72,8 +72,6 @@ func (a *ComponentManager) Stop() {
 		log.Errorf("Error stopping the net adapter: %+v", err)
 	}
 
-	a.protocolManager.Close()
-
 	return
 }
 
@@ -157,7 +155,7 @@ func setupRPC(
 
 func (a *ComponentManager) maybeSeedFromDNS() {
 	if !a.cfg.DisableDNSSeed {
-		dnsseed.SeedFromDNS(a.cfg.NetParams(), a.cfg.DNSSeed, false, nil,
+		dnsseed.SeedFromDNS(a.cfg.NetParams(), a.cfg.DNSSeed, appmessage.SFNodeNetwork, false, nil,
 			a.cfg.Lookup, func(addresses []*appmessage.NetAddress) {
 				// Kaspad uses a lookup of the dns seeder here. Since seeder returns
 				// IPs of nodes and not its own IP, we can not know real IP of
@@ -165,7 +163,7 @@ func (a *ComponentManager) maybeSeedFromDNS() {
 				a.addressManager.AddAddresses(addresses...)
 			})
 
-		dnsseed.SeedFromGRPC(a.cfg.NetParams(), a.cfg.GRPCSeed, false, nil,
+		dnsseed.SeedFromGRPC(a.cfg.NetParams(), a.cfg.GRPCSeed, appmessage.SFNodeNetwork, false, nil,
 			func(addresses []*appmessage.NetAddress) {
 				a.addressManager.AddAddresses(addresses...)
 			})

app/protocol/flowcontext/flow_context.go

@@ -61,8 +61,6 @@ type FlowContext struct {
 
 	orphans      map[externalapi.DomainHash]*externalapi.DomainBlock
 	orphansMutex sync.RWMutex
-
-	shutdownChan chan struct{}
 }
 
 // New returns a new instance of FlowContext.
@@ -81,21 +79,9 @@ func New(cfg *config.Config, domain domain.Domain, addressManager *addressmanage
 		transactionsToRebroadcast:   make(map[externalapi.DomainTransactionID]*externalapi.DomainTransaction),
 		orphans:                     make(map[externalapi.DomainHash]*externalapi.DomainBlock),
 		timeStarted:                 mstime.Now().UnixMilliseconds(),
-		shutdownChan:                make(chan struct{}),
 	}
 }
 
-// Close signals to all flows the the protocol manager is closed.
-func (f *FlowContext) Close() {
-	close(f.shutdownChan)
-}
-
-// ShutdownChan is a chan where flows can subscribe to shutdown
-// event.
-func (f *FlowContext) ShutdownChan() <-chan struct{} {
-	return f.shutdownChan
-}
-
 // SetOnBlockAddedToDAGHandler sets the onBlockAddedToDAG handler
 func (f *FlowContext) SetOnBlockAddedToDAGHandler(onBlockAddedToDAGHandler OnBlockAddedToDAGHandler) {
 	f.onBlockAddedToDAGHandler = onBlockAddedToDAGHandler

app/protocol/flows/blockrelay/handle_request_headers.go

@@ -50,7 +50,7 @@ func (flow *handleRequestHeadersFlow) start() error {
 			// GetHashesBetween is a relatively heavy operation so we limit it
 			// in order to avoid locking the consensus for too long
 			const maxBlueScoreDifference = 1 << 10
-			blockHashes, _, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
+			blockHashes, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
 			if err != nil {
 				return err
 			}

app/protocol/flows/ping/send.go

@@ -13,7 +13,6 @@ import (
 
 // SendPingsContext is the interface for the context needed for the SendPings flow.
 type SendPingsContext interface {
-	ShutdownChan() <-chan struct{}
 }
 
 type sendPingsFlow struct {
@@ -40,13 +39,7 @@ func (flow *sendPingsFlow) start() error {
 	ticker := time.NewTicker(pingInterval)
 	defer ticker.Stop()
 
-	for {
-		select {
-		case <-flow.ShutdownChan():
-			return nil
-		case <-ticker.C:
-		}
-
+	for range ticker.C {
 		nonce, err := random.Uint64()
 		if err != nil {
 			return err
@@ -69,4 +62,5 @@ func (flow *sendPingsFlow) start() error {
 		}
 		flow.peer.SetPingIdle()
 	}
+	return nil
 }

app/protocol/flows/testing/handle_relay_invs_test.go

@@ -181,7 +181,7 @@ func (f *fakeRelayInvsContext) GetBlockAcceptanceData(blockHash *externalapi.Dom
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }
 
-func (f *fakeRelayInvsContext) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) (hashes []*externalapi.DomainHash, actualHighHash *externalapi.DomainHash, err error) {
+func (f *fakeRelayInvsContext) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) ([]*externalapi.DomainHash, error) {
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }
 

app/protocol/manager.go

@@ -2,9 +2,6 @@ package protocol
 
 import (
 	"fmt"
-	"github.com/pkg/errors"
-	"sync"
-	"sync/atomic"
 
 	"github.com/kaspanet/kaspad/domain"
 
@@ -20,9 +17,7 @@ import (
 
 // Manager manages the p2p protocol
 type Manager struct {
-	context          *flowcontext.FlowContext
-	routersWaitGroup sync.WaitGroup
-	isClosed         uint32
+	context *flowcontext.FlowContext
 }
 
 // NewManager creates a new instance of the p2p protocol manager
@@ -37,18 +32,6 @@ func NewManager(cfg *config.Config, domain domain.Domain, netAdapter *netadapter
 	return &manager, nil
 }
 
-// Close closes the protocol manager and waits until all p2p flows
-// finish.
-func (m *Manager) Close() {
-	if !atomic.CompareAndSwapUint32(&m.isClosed, 0, 1) {
-		panic(errors.New("The protocol manager was already closed"))
-	}
-
-	atomic.StoreUint32(&m.isClosed, 1)
-	m.context.Close()
-	m.routersWaitGroup.Wait()
-}
-
 // Peers returns the currently active peers
 func (m *Manager) Peers() []*peerpkg.Peer {
 	return m.context.Peers()
@@ -70,13 +53,11 @@ func (m *Manager) AddBlock(block *externalapi.DomainBlock) error {
 	return m.context.AddBlock(block)
 }
 
-func (m *Manager) runFlows(flows []*flow, peer *peerpkg.Peer, errChan <-chan error, flowsWaitGroup *sync.WaitGroup) error {
-	flowsWaitGroup.Add(len(flows))
+func (m *Manager) runFlows(flows []*flow, peer *peerpkg.Peer, errChan <-chan error) error {
 	for _, flow := range flows {
 		executeFunc := flow.executeFunc // extract to new variable so that it's not overwritten
 		spawn(fmt.Sprintf("flow-%s", flow.name), func() {
 			executeFunc(peer)
-			flowsWaitGroup.Done()
 		})
 	}
 

app/protocol/protocol.go

@@ -1,10 +1,10 @@
 package protocol
 
 import (
+	"sync/atomic"
+
 	"github.com/kaspanet/kaspad/app/protocol/flows/rejects"
 	"github.com/kaspanet/kaspad/infrastructure/network/connmanager"
-	"sync"
-	"sync/atomic"
 
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/flows/addressexchange"
@@ -41,13 +41,6 @@ func (m *Manager) routerInitializer(router *routerpkg.Router, netConnection *net
 	// After flows were registered - spawn a new thread that will wait for connection to finish initializing
 	// and start receiving messages
 	spawn("routerInitializer-runFlows", func() {
-		m.routersWaitGroup.Add(1)
-		defer m.routersWaitGroup.Done()
-
-		if atomic.LoadUint32(&m.isClosed) == 1 {
-			panic(errors.Errorf("tried to initialize router when the protocol manager is closed"))
-		}
-
 		isBanned, err := m.context.ConnectionManager().IsBanned(netConnection)
 		if err != nil && !errors.Is(err, addressmanager.ErrAddressNotFound) {
 			panic(err)
@@ -86,17 +79,11 @@ func (m *Manager) routerInitializer(router *routerpkg.Router, netConnection *net
 
 		removeHandshakeRoutes(router)
 
-		flowsWaitGroup := &sync.WaitGroup{}
-		err = m.runFlows(flows, peer, errChan, flowsWaitGroup)
+		err = m.runFlows(flows, peer, errChan)
 		if err != nil {
 			m.handleError(err, netConnection, router.OutgoingRoute())
-			// We call `flowsWaitGroup.Wait()` in two places instead of deferring, because
-			// we already defer `m.routersWaitGroup.Done()`, so we try to avoid error prone
-			// and confusing use of multiple dependent defers.
-			flowsWaitGroup.Wait()
 			return
 		}
-		flowsWaitGroup.Wait()
 	})
 }
 

app/rpc/rpccontext/utxos_by_addresses.go

@@ -24,7 +24,7 @@ func ConvertUTXOOutpointEntryPairsToUTXOsByAddressesEntries(address string, pair
 			UTXOEntry: &appmessage.RPCUTXOEntry{
 				Amount:          utxoEntry.Amount(),
 				ScriptPublicKey: &appmessage.RPCScriptPublicKey{Script: hex.EncodeToString(utxoEntry.ScriptPublicKey().Script), Version: utxoEntry.ScriptPublicKey().Version},
-				BlockDAAScore:   utxoEntry.BlockDAAScore(),
+				BlockBlueScore:  utxoEntry.BlockBlueScore(),
 				IsCoinbase:      utxoEntry.IsCoinbase(),
 			},
 		})

app/rpc/rpccontext/verbosedata.go

@@ -17,6 +17,8 @@ import (
 	"github.com/kaspanet/kaspad/domain/consensus/utils/estimatedsize"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
 
+	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
+
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -126,6 +128,11 @@ func (ctx *Context) BuildTransactionVerboseData(tx *externalapi.DomainTransactio
 	onEnd := logger.LogAndMeasureExecutionTime(log, "BuildTransactionVerboseData")
 	defer onEnd()
 
+	var payloadHash string
+	if tx.SubnetworkID != subnetworks.SubnetworkIDNative {
+		payloadHash = tx.PayloadHash.String()
+	}
+
 	txReply := &appmessage.TransactionVerboseData{
 		TxID:                      txID,
 		Hash:                      consensushashing.TransactionHash(tx).String(),
@@ -136,6 +143,7 @@ func (ctx *Context) BuildTransactionVerboseData(tx *externalapi.DomainTransactio
 		LockTime:                  tx.LockTime,
 		SubnetworkID:              tx.SubnetworkID.String(),
 		Gas:                       tx.Gas,
+		PayloadHash:               payloadHash,
 		Payload:                   hex.EncodeToString(tx.Payload),
 	}
 

app/rpc/rpchandlers/get_blocks.go

@@ -55,7 +55,8 @@ func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appm
 	if err != nil {
 		return nil, err
 	}
-	blockHashes, highHash, err := context.Domain.Consensus().GetHashesBetween(lowHash, virtualSelectedParent, maxBlocksInGetBlocksResponse)
+	blockHashes, err := context.Domain.Consensus().GetHashesBetween(
+		lowHash, virtualSelectedParent, maxBlocksInGetBlocksResponse)
 	if err != nil {
 		return nil, err
 	}
@@ -63,10 +64,9 @@ func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appm
 	// prepend low hash to make it inclusive
 	blockHashes = append([]*externalapi.DomainHash{lowHash}, blockHashes...)
 
-	// If the high hash is equal to virtualSelectedParent it means GetHashesBetween didn't skip any hashes, and
-	// there's space to add the virtualSelectedParent's anticone, otherwise you can't add the anticone because
-	// there's no guarantee that all of the anticone root ancestors will be present.
-	if highHash.Equal(virtualSelectedParent) {
+	// If there are no maxBlocksInGetBlocksResponse between lowHash and virtualSelectedParent -
+	// add virtualSelectedParent's anticone
+	if len(blockHashes) < maxBlocksInGetBlocksResponse {
 		virtualSelectedParentAnticone, err := context.Domain.Consensus().Anticone(virtualSelectedParent)
 		if err != nil {
 			return nil, err

app/rpc/rpchandlers/get_blocks_test.go

@@ -5,8 +5,6 @@ import (
 	"sort"
 	"testing"
 
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/rpc/rpccontext"
 	"github.com/kaspanet/kaspad/app/rpc/rpchandlers"
@@ -29,8 +27,6 @@ func (d fakeDomain) MiningManager() miningmanager.MiningManager { return nil }
 
 func TestHandleGetBlocks(t *testing.T) {
 	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {
-		stagingArea := model.NewStagingArea()
-
 		factory := consensus.NewFactory()
 		tc, teardown, err := factory.NewTestConsensus(params, false, "TestHandleGetBlocks")
 		if err != nil {
@@ -59,7 +55,7 @@ func TestHandleGetBlocks(t *testing.T) {
 			antipast := make([]*externalapi.DomainHash, 0, len(slice))
 
 			for _, blockHash := range slice {
-				isInPastOfPovBlock, err := tc.DAGTopologyManager().IsAncestorOf(stagingArea, blockHash, povBlock)
+				isInPastOfPovBlock, err := tc.DAGTopologyManager().IsAncestorOf(blockHash, povBlock)
 				if err != nil {
 					t.Fatalf("Failed doing reachability check: '%v'", err)
 				}
@@ -91,7 +87,7 @@ func TestHandleGetBlocks(t *testing.T) {
 				}
 				splitBlocks = append(splitBlocks, blockHash)
 			}
-			sort.Sort(sort.Reverse(testutils.NewTestGhostDAGSorter(stagingArea, splitBlocks, tc, t)))
+			sort.Sort(sort.Reverse(testutils.NewTestGhostDAGSorter(splitBlocks, tc, t)))
 			restOfSplitBlocks, selectedParent := splitBlocks[:len(splitBlocks)-1], splitBlocks[len(splitBlocks)-1]
 			expectedOrder = append(expectedOrder, selectedParent)
 			expectedOrder = append(expectedOrder, restOfSplitBlocks...)

app/rpc/rpchandlers/get_info.go

@@ -8,10 +8,6 @@ import (
 
 // HandleGetInfo handles the respectively named RPC command
 func HandleGetInfo(context *rpccontext.Context, _ *router.Router, _ appmessage.Message) (appmessage.Message, error) {
-	response := appmessage.NewGetInfoResponseMessage(
-		context.NetAdapter.ID().String(),
-		uint64(context.Domain.MiningManager().TransactionCount()),
-	)
-
+	response := appmessage.NewGetInfoResponseMessage(context.NetAdapter.ID().String())
 	return response, nil
 }

app/rpc/rpchandlers/unban.go

@@ -16,7 +16,7 @@ func HandleUnban(context *rpccontext.Context, _ *router.Router, request appmessa
 		errorMessage.Error = appmessage.RPCErrorf("Could not parse IP %s", unbanRequest.IP)
 		return errorMessage, nil
 	}
-	err := context.AddressManager.Unban(appmessage.NewNetAddressIPPort(ip, 0))
+	err := context.AddressManager.Unban(appmessage.NewNetAddressIPPort(ip, 0, 0))
 	if err != nil {
 		errorMessage := &appmessage.UnbanResponseMessage{}
 		errorMessage.Error = appmessage.RPCErrorf("Could not unban IP: %s", err)

changelog.txt

@@ -1,11 +1,39 @@
+
+Kaspad v0.9.2 - 2021-03-31
+===========================
+* Increase the route capacity of InvTransaction messages. (#1603) (#1637)
+
+Kaspad v0.9.1 - 2021-03-14
+===========================
+* Testnet network reset
+
+Kaspad v0.9.0 - 2021-03-04
+===========================
+
+* Merge big subdags in pick virtual parents (#1574)
+* Write in the reject message the tx rejection reason (#1573)
+* Add nil checks for protowire (#1570)
+* Increase getBlocks limit to 1000 (#1572)
+* Return RPC error if getBlock's lowHash doesn't exist (#1569)
+* Add default dns-seeder to testnet (#1568)
+* Fix utxoindex deserialization (#1566)
+* Add pruning point hash to GetBlockDagInfo response (#1565)
+* Use EmitUnpopulated so that kaspactl prints all fields, even the default ones (#1561)
+* Stop logging an error whenever an RPC/P2P connection is canceled  (#1562)
+* Cleanup the logger and make it asynchronous (#1524)
+* Close all iterators (#1542)
+* Add childrenHashes to GetBlock/s RPC commands (#1560)
+* Add ScriptPublicKey.Version to RPC (#1559)
+* Fix the target block rate to create less bursty mining (#1554)
+
 Kaspad v0.8.10 - 2021-02-25
 ===========================
 
-[*] Fix bug where invalid mempool transactions were not removed (#1551)
-[*] Add RPC reconnection to the miner (#1552)
-[*] Remove virtual diff parents - only selectedTip is virtualDiffParent now (#1550)
-[*] Fix UTXO index (#1548)
-[*] Prevent fast failing (#1545)
-[*] Increase the sleep time in kaspaminer when the node is not synced (#1544)
-[*] Disallow header only blocks on RPC, relay and when requesting IBD full blocks (#1537)
-[*] Make templateManager hold a DomainBlock and isSynced bool instead of a GetBlockTemplateResponseMessage (#1538)
+* Fix bug where invalid mempool transactions were not removed (#1551)
+* Add RPC reconnection to the miner (#1552)
+* Remove virtual diff parents - only selectedTip is virtualDiffParent now (#1550)
+* Fix UTXO index (#1548)
+* Prevent fast failing (#1545)
+* Increase the sleep time in kaspaminer when the node is not synced (#1544)
+* Disallow header only blocks on RPC, relay and when requesting IBD full blocks (#1537)
+* Make templateManager hold a DomainBlock and isSynced bool instead of a GetBlockTemplateResponseMessage (#1538)

cmd/kaspaminer/config.go

@@ -24,9 +24,9 @@ const (
 
 var (
 	// Default configuration options
-	defaultAppDir     = util.AppDir("kaspaminer", false)
-	defaultLogFile    = filepath.Join(defaultAppDir, defaultLogFilename)
-	defaultErrLogFile = filepath.Join(defaultAppDir, defaultErrLogFilename)
+	defaultHomeDir    = util.AppDataDir("kaspaminer", false)
+	defaultLogFile    = filepath.Join(defaultHomeDir, defaultLogFilename)
+	defaultErrLogFile = filepath.Join(defaultHomeDir, defaultErrLogFilename)
 	defaultRPCServer  = "localhost"
 )
 

cmd/kaspaminer/mineloop.go

@@ -44,32 +44,34 @@ func mineLoop(client *minerClient, numberOfBlocks uint64, targetBlocksPerSecond
 
 	spawn("blocksLoop", func() {
 		const windowSize = 10
+		var expectedDurationForWindow time.Duration
+		var windowExpectedEndTime time.Time
 		hasBlockRateTarget := targetBlocksPerSecond != 0
-		var windowTicker, blockTicker *time.Ticker
-		// We use tickers to limit the block rate:
-		// 1. windowTicker -> makes sure that the last windowSize blocks take at least windowSize*targetBlocksPerSecond.
-		// 2. blockTicker -> makes sure that each block takes at least targetBlocksPerSecond/windowSize.
-		// that way we both allow for fluctuation in block rate but also make sure they're not too big (by an order of magnitude)
 		if hasBlockRateTarget {
-			windowRate := time.Duration(float64(time.Second) / (targetBlocksPerSecond / windowSize))
-			blockRate := time.Duration(float64(time.Second) / (targetBlocksPerSecond * windowSize))
-			log.Infof("Minimum average time per %d blocks: %s, smaller minimum time per block: %s", windowSize, windowRate, blockRate)
-			windowTicker = time.NewTicker(windowRate)
-			blockTicker = time.NewTicker(blockRate)
-			defer windowTicker.Stop()
-			defer blockTicker.Stop()
+			expectedDurationForWindow = time.Duration(float64(windowSize)/targetBlocksPerSecond) * time.Second
+			windowExpectedEndTime = time.Now().Add(expectedDurationForWindow)
 		}
-		windowStart := time.Now()
-		for blockIndex := 1; ; blockIndex++ {
+		blockInWindowIndex := 0
+
+		sleepTime := 0 * time.Second
+
+		for {
 			foundBlockChan <- mineNextBlock(mineWhenNotSynced)
+
 			if hasBlockRateTarget {
-				<-blockTicker.C
-				if (blockIndex % windowSize) == 0 {
-					tickerStart := time.Now()
-					<-windowTicker.C
-					log.Infof("Finished mining %d blocks in: %s. slept for: %s", windowSize, time.Since(windowStart), time.Since(tickerStart))
-					windowStart = time.Now()
+				blockInWindowIndex++
+				if blockInWindowIndex == windowSize-1 {
+					deviation := windowExpectedEndTime.Sub(time.Now())
+					if deviation > 0 {
+						sleepTime = deviation / windowSize
+						log.Infof("Finished to mine %d blocks %s earlier than expected. Setting the miner "+
+							"to sleep %s between blocks to compensate",
+							windowSize, deviation, sleepTime)
+					}
+					blockInWindowIndex = 0
+					windowExpectedEndTime = time.Now().Add(expectedDurationForWindow)
 				}
+				time.Sleep(sleepTime)
 			}
 		}
 	})

cmd/wallet/common.go

@@ -10,8 +10,7 @@ func isUTXOSpendable(entry *appmessage.UTXOsByAddressesEntry, virtualSelectedPar
 	if !entry.UTXOEntry.IsCoinbase {
 		return true
 	}
-	blockBlueScore := entry.UTXOEntry.BlockDAAScore
-	// TODO: Check for a better alternative than virtualSelectedParentBlueScore
+	blockBlueScore := entry.UTXOEntry.BlockBlueScore
 	return blockBlueScore+coinbaseMaturity < virtualSelectedParentBlueScore
 }
 

cmd/wallet/send.go

@@ -3,11 +3,9 @@ package main
 import (
 	"encoding/hex"
 	"fmt"
-
 	"github.com/kaspanet/go-secp256k1"
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/transactionid"
@@ -179,12 +177,11 @@ func generateTransaction(keyPair *secp256k1.SchnorrKeyPair, selectedUTXOs []*app
 		SubnetworkID: subnetworks.SubnetworkIDNative,
 		Gas:          0,
 		Payload:      nil,
+		PayloadHash:  externalapi.DomainHash{},
 	}
-	sighashReusedValues := &consensushashing.SighashReusedValues{}
 
 	for i, input := range domainTransaction.Inputs {
-		signatureScript, err := txscript.SignatureScript(
-			domainTransaction, i, consensushashing.SigHashAll, keyPair, sighashReusedValues)
+		signatureScript, err := txscript.SignatureScript(domainTransaction, i, fromScript, txscript.SigHashAll, keyPair)
 		if err != nil {
 			return nil, err
 		}

domain/consensus/consensus.go

@@ -46,7 +46,6 @@ type consensus struct {
 	utxoDiffStore             model.UTXODiffStore
 	finalityStore             model.FinalityStore
 	headersSelectedChainStore model.HeadersSelectedChainStore
-	daaBlocksStore            model.DAABlocksStore
 }
 
 // BuildBlock builds a block over the current state, with the transactions
@@ -75,34 +74,30 @@ func (s *consensus) ValidateTransactionAndPopulateWithConsensusData(transaction
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
 	err := s.transactionValidator.ValidateTransactionInIsolation(transaction)
 	if err != nil {
 		return err
 	}
 
-	err = s.consensusStateManager.PopulateTransactionWithUTXOEntries(stagingArea, transaction)
+	err = s.consensusStateManager.PopulateTransactionWithUTXOEntries(transaction)
 	if err != nil {
 		return err
 	}
 
-	virtualSelectedParentMedianTime, err := s.pastMedianTimeManager.PastMedianTime(stagingArea, model.VirtualBlockHash)
+	virtualSelectedParentMedianTime, err := s.pastMedianTimeManager.PastMedianTime(model.VirtualBlockHash)
 	if err != nil {
 		return err
 	}
 
-	return s.transactionValidator.ValidateTransactionInContextAndPopulateMassAndFee(
-		stagingArea, transaction, model.VirtualBlockHash, virtualSelectedParentMedianTime)
+	return s.transactionValidator.ValidateTransactionInContextAndPopulateMassAndFee(transaction,
+		model.VirtualBlockHash, virtualSelectedParentMedianTime)
 }
 
 func (s *consensus) GetBlock(blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	block, err := s.blockStore.Block(s.databaseContext, stagingArea, blockHash)
+	block, err := s.blockStore.Block(s.databaseContext, blockHash)
 	if err != nil {
 		if errors.Is(err, database.ErrNotFound) {
 			return nil, errors.Wrapf(err, "block %s does not exist", blockHash)
@@ -116,9 +111,7 @@ func (s *consensus) GetBlockHeader(blockHash *externalapi.DomainHash) (externala
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	blockHeader, err := s.blockHeaderStore.BlockHeader(s.databaseContext, stagingArea, blockHash)
+	blockHeader, err := s.blockHeaderStore.BlockHeader(s.databaseContext, blockHash)
 	if err != nil {
 		if errors.Is(err, database.ErrNotFound) {
 			return nil, errors.Wrapf(err, "block header %s does not exist", blockHash)
@@ -132,11 +125,9 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
 	blockInfo := &externalapi.BlockInfo{}
 
-	exists, err := s.blockStatusStore.Exists(s.databaseContext, stagingArea, blockHash)
+	exists, err := s.blockStatusStore.Exists(s.databaseContext, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -145,7 +136,7 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 		return blockInfo, nil
 	}
 
-	blockStatus, err := s.blockStatusStore.Get(s.databaseContext, stagingArea, blockHash)
+	blockStatus, err := s.blockStatusStore.Get(s.databaseContext, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -156,7 +147,7 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 		return blockInfo, nil
 	}
 
-	ghostdagData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, blockHash)
+	ghostdagData, err := s.ghostdagDataStore.Get(s.databaseContext, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -167,12 +158,7 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 }
 
 func (s *consensus) GetBlockChildren(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-
-	stagingArea := model.NewStagingArea()
-
-	blockRelation, err := s.blockRelationStore.BlockRelation(s.databaseContext, stagingArea, blockHash)
+	blockRelation, err := s.blockRelationStore.BlockRelation(s.databaseContext, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -184,48 +170,42 @@ func (s *consensus) GetBlockAcceptanceData(blockHash *externalapi.DomainHash) (e
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, blockHash)
+	err := s.validateBlockHashExists(blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.acceptanceDataStore.Get(s.databaseContext, stagingArea, blockHash)
+	return s.acceptanceDataStore.Get(s.databaseContext, blockHash)
 }
 
-func (s *consensus) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) (
-	hashes []*externalapi.DomainHash, actualHighHash *externalapi.DomainHash, err error) {
+func (s *consensus) GetHashesBetween(lowHash, highHash *externalapi.DomainHash,
+	maxBlueScoreDifference uint64) ([]*externalapi.DomainHash, error) {
 
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err = s.validateBlockHashExists(stagingArea, lowHash)
+	err := s.validateBlockHashExists(lowHash)
 	if err != nil {
-		return nil, nil, err
+		return nil, err
 	}
-	err = s.validateBlockHashExists(stagingArea, highHash)
+	err = s.validateBlockHashExists(highHash)
 	if err != nil {
-		return nil, nil, err
+		return nil, err
 	}
 
-	return s.syncManager.GetHashesBetween(stagingArea, lowHash, highHash, maxBlueScoreDifference)
+	return s.syncManager.GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
 }
 
 func (s *consensus) GetMissingBlockBodyHashes(highHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, highHash)
+	err := s.validateBlockHashExists(highHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.GetMissingBlockBodyHashes(stagingArea, highHash)
+	return s.syncManager.GetMissingBlockBodyHashes(highHash)
 }
 
 func (s *consensus) GetPruningPointUTXOs(expectedPruningPointHash *externalapi.DomainHash,
@@ -234,9 +214,7 @@ func (s *consensus) GetPruningPointUTXOs(expectedPruningPointHash *externalapi.D
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	pruningPointHash, err := s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
+	pruningPointHash, err := s.pruningStore.PruningPoint(s.databaseContext)
 	if err != nil {
 		return nil, err
 	}
@@ -260,9 +238,7 @@ func (s *consensus) GetVirtualUTXOs(expectedVirtualParents []*externalapi.Domain
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	virtualParents, err := s.dagTopologyManager.Parents(stagingArea, model.VirtualBlockHash)
+	virtualParents, err := s.dagTopologyManager.Parents(model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -284,9 +260,7 @@ func (s *consensus) PruningPoint() (*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	return s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
+	return s.pruningStore.PruningPoint(s.databaseContext)
 }
 
 func (s *consensus) ClearImportedPruningPointData() error {
@@ -314,9 +288,7 @@ func (s *consensus) GetVirtualSelectedParent() (*externalapi.DomainHash, error)
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, model.VirtualBlockHash)
+	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -327,30 +299,26 @@ func (s *consensus) Tips() ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	return s.consensusStateStore.Tips(stagingArea, s.databaseContext)
+	return s.consensusStateStore.Tips(s.databaseContext)
 }
 
 func (s *consensus) GetVirtualInfo() (*externalapi.VirtualInfo, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	blockRelations, err := s.blockRelationStore.BlockRelation(s.databaseContext, stagingArea, model.VirtualBlockHash)
+	blockRelations, err := s.blockRelationStore.BlockRelation(s.databaseContext, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	bits, err := s.difficultyManager.RequiredDifficulty(stagingArea, model.VirtualBlockHash)
+	bits, err := s.difficultyManager.RequiredDifficulty(model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	pastMedianTime, err := s.pastMedianTimeManager.PastMedianTime(stagingArea, model.VirtualBlockHash)
+	pastMedianTime, err := s.pastMedianTimeManager.PastMedianTime(model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, model.VirtualBlockHash)
+	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -367,87 +335,76 @@ func (s *consensus) CreateBlockLocator(lowHash, highHash *externalapi.DomainHash
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, lowHash)
+	err := s.validateBlockHashExists(lowHash)
 	if err != nil {
 		return nil, err
 	}
-	err = s.validateBlockHashExists(stagingArea, highHash)
+	err = s.validateBlockHashExists(highHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.CreateBlockLocator(stagingArea, lowHash, highHash, limit)
+	return s.syncManager.CreateBlockLocator(lowHash, highHash, limit)
 }
 
 func (s *consensus) CreateFullHeadersSelectedChainBlockLocator() (externalapi.BlockLocator, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	lowHash, err := s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
+	lowHash, err := s.pruningStore.PruningPoint(s.databaseContext)
 	if err != nil {
 		return nil, err
 	}
 
-	highHash, err := s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext, stagingArea)
+	highHash, err := s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.CreateHeadersSelectedChainBlockLocator(stagingArea, lowHash, highHash)
+	return s.syncManager.CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
 }
 
-func (s *consensus) CreateHeadersSelectedChainBlockLocator(lowHash, highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
+func (s *consensus) CreateHeadersSelectedChainBlockLocator(lowHash,
+	highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	return s.syncManager.CreateHeadersSelectedChainBlockLocator(stagingArea, lowHash, highHash)
+	return s.syncManager.CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
 }
 
 func (s *consensus) GetSyncInfo() (*externalapi.SyncInfo, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	return s.syncManager.GetSyncInfo(stagingArea)
+	return s.syncManager.GetSyncInfo()
 }
 
 func (s *consensus) IsValidPruningPoint(blockHash *externalapi.DomainHash) (bool, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, blockHash)
+	err := s.validateBlockHashExists(blockHash)
 	if err != nil {
 		return false, err
 	}
 
-	return s.pruningManager.IsValidPruningPoint(stagingArea, blockHash)
+	return s.pruningManager.IsValidPruningPoint(blockHash)
 }
 
 func (s *consensus) GetVirtualSelectedParentChainFromBlock(blockHash *externalapi.DomainHash) (*externalapi.SelectedChainPath, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, blockHash)
+	err := s.validateBlockHashExists(blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.consensusStateManager.GetVirtualSelectedParentChainFromBlock(stagingArea, blockHash)
+	return s.consensusStateManager.GetVirtualSelectedParentChainFromBlock(blockHash)
 }
 
-func (s *consensus) validateBlockHashExists(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) error {
-	exists, err := s.blockStatusStore.Exists(s.databaseContext, stagingArea, blockHash)
+func (s *consensus) validateBlockHashExists(blockHash *externalapi.DomainHash) error {
+	exists, err := s.blockStatusStore.Exists(s.databaseContext, blockHash)
 	if err != nil {
 		return err
 	}
@@ -461,39 +418,33 @@ func (s *consensus) IsInSelectedParentChainOf(blockHashA *externalapi.DomainHash
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, blockHashA)
+	err := s.validateBlockHashExists(blockHashA)
 	if err != nil {
 		return false, err
 	}
-	err = s.validateBlockHashExists(stagingArea, blockHashB)
+	err = s.validateBlockHashExists(blockHashB)
 	if err != nil {
 		return false, err
 	}
 
-	return s.dagTopologyManager.IsInSelectedParentChainOf(stagingArea, blockHashA, blockHashB)
+	return s.dagTopologyManager.IsInSelectedParentChainOf(blockHashA, blockHashB)
 }
 
 func (s *consensus) GetHeadersSelectedTip() (*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	return s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext, stagingArea)
+	return s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext)
 }
 
 func (s *consensus) Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	stagingArea := model.NewStagingArea()
-
-	err := s.validateBlockHashExists(stagingArea, blockHash)
+	err := s.validateBlockHashExists(blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.dagTraversalManager.Anticone(stagingArea, blockHash)
+	return s.dagTraversalManager.Anticone(blockHash)
 }

domain/consensus/constructors.go

@@ -13,9 +13,9 @@ type GHOSTDAGManagerConstructor func(model.DBReader, model.DAGTopologyManager,
 
 // DifficultyManagerConstructor is the function signature for a constructor of a type implementing model.DifficultyManager
 type DifficultyManagerConstructor func(model.DBReader, model.GHOSTDAGManager, model.GHOSTDAGDataStore,
-	model.BlockHeaderStore, model.DAABlocksStore, model.DAGTopologyManager, model.DAGTraversalManager, *big.Int, int, bool, time.Duration,
+	model.BlockHeaderStore, model.DAGTopologyManager, model.DAGTraversalManager, *big.Int, int, bool, time.Duration,
 	*externalapi.DomainHash) model.DifficultyManager
 
 // PastMedianTimeManagerConstructor is the function signature for a constructor of a type implementing model.PastMedianTimeManager
 type PastMedianTimeManagerConstructor func(int, model.DBReader, model.DAGTraversalManager, model.BlockHeaderStore,
-	model.GHOSTDAGDataStore, *externalapi.DomainHash) model.PastMedianTimeManager
+	model.GHOSTDAGDataStore) model.PastMedianTimeManager

domain/consensus/database/binaryserialization/common.go

@@ -1,24 +0,0 @@
-package binaryserialization
-
-import (
-	"encoding/binary"
-	"github.com/pkg/errors"
-)
-
-const uint64Length = 8
-
-// SerializeUint64 serializes a uint64
-func SerializeUint64(value uint64) []byte {
-	var keyBytes [uint64Length]byte
-	binary.LittleEndian.PutUint64(keyBytes[:], value)
-	return keyBytes[:]
-}
-
-// DeserializeUint64 deserializes bytes to uint64
-func DeserializeUint64(valueBytes []byte) (uint64, error) {
-	if len(valueBytes) != uint64Length {
-		return 0, errors.Errorf("the given value is %d bytes so it cannot be deserialized into uint64",
-			len(valueBytes))
-	}
-	return binary.LittleEndian.Uint64(valueBytes), nil
-}

domain/consensus/database/binaryserialization/hash.go

@@ -1,47 +1,13 @@
 package binaryserialization
 
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-	"github.com/pkg/errors"
-)
+import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 
 // SerializeHash serializes hash to a slice of bytes
 func SerializeHash(hash *externalapi.DomainHash) []byte {
 	return hash.ByteSlice()
 }
 
-// DeserializeHash deserializes a slice of bytes to a hash
+// DeserializeHash a slice of bytes to a hash
 func DeserializeHash(hashBytes []byte) (*externalapi.DomainHash, error) {
 	return externalapi.NewDomainHashFromByteSlice(hashBytes)
 }
-
-// SerializeHashes serializes a slice of hashes to a slice of bytes
-func SerializeHashes(hashes []*externalapi.DomainHash) []byte {
-	buff := make([]byte, len(hashes)*externalapi.DomainHashSize)
-	for i, hash := range hashes {
-		copy(buff[externalapi.DomainHashSize*i:], hash.ByteSlice())
-	}
-
-	return buff
-}
-
-// DeserializeHashes deserializes a slice of bytes to a slice of hashes
-func DeserializeHashes(hashesBytes []byte) ([]*externalapi.DomainHash, error) {
-	if len(hashesBytes)%externalapi.DomainHashSize != 0 {
-		return nil, errors.Errorf("The length of hashBytes is not divisible by externalapi.DomainHashSize (%d)",
-			externalapi.DomainHashSize)
-	}
-
-	numHashes := len(hashesBytes) / externalapi.DomainHashSize
-	hashes := make([]*externalapi.DomainHash, numHashes)
-	for i := 0; i < numHashes; i++ {
-		var err error
-		start := i * externalapi.DomainHashSize
-		end := i*externalapi.DomainHashSize + externalapi.DomainHashSize
-		hashes[i], err = externalapi.NewDomainHashFromByteSlice(hashesBytes[start:end])
-		if err != nil {
-			return nil, err
-		}
-	}
-	return hashes, nil
-}

domain/consensus/database/binaryserialization/selected_chain.go

@@ -0,0 +1,15 @@
+package binaryserialization
+
+import "encoding/binary"
+
+// SerializeChainBlockIndex serializes chain block index
+func SerializeChainBlockIndex(index uint64) []byte {
+	var keyBytes [8]byte
+	binary.LittleEndian.PutUint64(keyBytes[:], index)
+	return keyBytes[:]
+}
+
+// DeserializeChainBlockIndex deserializes chain block index to uint64
+func DeserializeChainBlockIndex(indexBytes []byte) uint64 {
+	return binary.LittleEndian.Uint64(indexBytes)
+}

domain/consensus/database/serialization/dbobjects.pb.go

@@ -241,6 +241,7 @@ type DbTransaction struct {
 	LockTime     uint64                 `protobuf:"varint,4,opt,name=lockTime,proto3" json:"lockTime,omitempty"`
 	SubnetworkID *DbSubnetworkId        `protobuf:"bytes,5,opt,name=subnetworkID,proto3" json:"subnetworkID,omitempty"`
 	Gas          uint64                 `protobuf:"varint,6,opt,name=gas,proto3" json:"gas,omitempty"`
+	PayloadHash  *DbHash                `protobuf:"bytes,7,opt,name=payloadHash,proto3" json:"payloadHash,omitempty"`
 	Payload      []byte                 `protobuf:"bytes,8,opt,name=payload,proto3" json:"payload,omitempty"`
 }
 
@@ -318,6 +319,13 @@ func (x *DbTransaction) GetGas() uint64 {
 	return 0
 }
 
+func (x *DbTransaction) GetPayloadHash() *DbHash {
+	if x != nil {
+		return x.PayloadHash
+	}
+	return nil
+}
+
 func (x *DbTransaction) GetPayload() []byte {
 	if x != nil {
 		return x.Payload
@@ -1220,7 +1228,7 @@ type DbUtxoEntry struct {
 
 	Amount          uint64             `protobuf:"varint,1,opt,name=amount,proto3" json:"amount,omitempty"`
 	ScriptPublicKey *DbScriptPublicKey `protobuf:"bytes,2,opt,name=scriptPublicKey,proto3" json:"scriptPublicKey,omitempty"`
-	BlockDaaScore   uint64             `protobuf:"varint,3,opt,name=blockDaaScore,proto3" json:"blockDaaScore,omitempty"`
+	BlockBlueScore  uint64             `protobuf:"varint,3,opt,name=blockBlueScore,proto3" json:"blockBlueScore,omitempty"`
 	IsCoinbase      bool               `protobuf:"varint,4,opt,name=isCoinbase,proto3" json:"isCoinbase,omitempty"`
 }
 
@@ -1270,9 +1278,9 @@ func (x *DbUtxoEntry) GetScriptPublicKey() *DbScriptPublicKey {
 	return nil
 }
 
-func (x *DbUtxoEntry) GetBlockDaaScore() uint64 {
+func (x *DbUtxoEntry) GetBlockBlueScore() uint64 {
 	if x != nil {
-		return x.BlockDaaScore
+		return x.BlockBlueScore
 	}
 	return 0
 }
@@ -1645,7 +1653,7 @@ var file_dbobjects_proto_rawDesc = []byte{
 	0x28, 0x0d, 0x52, 0x04, 0x62, 0x69, 0x74, 0x73, 0x12, 0x14, 0x0a, 0x05, 0x6e, 0x6f, 0x6e, 0x63,
 	0x65, 0x18, 0x08, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05, 0x6e, 0x6f, 0x6e, 0x63, 0x65, 0x22, 0x1c,
 	0x0a, 0x06, 0x44, 0x62, 0x48, 0x61, 0x73, 0x68, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x61, 0x73, 0x68,
-	0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x68, 0x61, 0x73, 0x68, 0x22, 0xad, 0x02, 0x0a,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x68, 0x61, 0x73, 0x68, 0x22, 0xe6, 0x02, 0x0a,
 	0x0d, 0x44, 0x62, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x18,
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@@ -1663,184 +1671,188 @@ var file_dbobjects_proto_rawDesc = []byte{
 	0x69, 0x6f, 0x6e, 0x2e, 0x44, 0x62, 0x53, 0x75, 0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b,
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1895,37 +1907,38 @@ var file_dbobjects_proto_depIdxs = []int32{
 	4,  // 6: serialization.DbTransaction.inputs:type_name -> serialization.DbTransactionInput
 	7,  // 7: serialization.DbTransaction.outputs:type_name -> serialization.DbTransactionOutput
 	8,  // 8: serialization.DbTransaction.subnetworkID:type_name -> serialization.DbSubnetworkId
-	5,  // 9: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
-	6,  // 10: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
-	19, // 11: serialization.DbTransactionOutput.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
-	10, // 12: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
-	11, // 13: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
-	2,  // 14: serialization.DbBlockAcceptanceData.blockHash:type_name -> serialization.DbHash
-	3,  // 15: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
-	20, // 16: serialization.DbTransactionAcceptanceData.transactionInputUtxoEntries:type_name -> serialization.DbUtxoEntry
-	2,  // 17: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
-	2,  // 18: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
-	2,  // 19: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
-	2,  // 20: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
-	2,  // 21: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
-	15, // 22: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
-	2,  // 23: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
-	18, // 24: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
-	5,  // 25: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
-	20, // 26: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
-	19, // 27: serialization.DbUtxoEntry.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
-	2,  // 28: serialization.DbReachabilityData.children:type_name -> serialization.DbHash
-	2,  // 29: serialization.DbReachabilityData.parent:type_name -> serialization.DbHash
-	22, // 30: serialization.DbReachabilityData.interval:type_name -> serialization.DbReachabilityInterval
-	2,  // 31: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
-	18, // 32: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
-	18, // 33: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
-	2,  // 34: serialization.DbTips.tips:type_name -> serialization.DbHash
-	35, // [35:35] is the sub-list for method output_type
-	35, // [35:35] is the sub-list for method input_type
-	35, // [35:35] is the sub-list for extension type_name
-	35, // [35:35] is the sub-list for extension extendee
-	0,  // [0:35] is the sub-list for field type_name
+	2,  // 9: serialization.DbTransaction.payloadHash:type_name -> serialization.DbHash
+	5,  // 10: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
+	6,  // 11: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
+	19, // 12: serialization.DbTransactionOutput.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
+	10, // 13: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
+	11, // 14: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
+	2,  // 15: serialization.DbBlockAcceptanceData.blockHash:type_name -> serialization.DbHash
+	3,  // 16: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
+	20, // 17: serialization.DbTransactionAcceptanceData.transactionInputUtxoEntries:type_name -> serialization.DbUtxoEntry
+	2,  // 18: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
+	2,  // 19: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
+	2,  // 20: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
+	2,  // 21: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
+	2,  // 22: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
+	15, // 23: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
+	2,  // 24: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
+	18, // 25: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
+	5,  // 26: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
+	20, // 27: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
+	19, // 28: serialization.DbUtxoEntry.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
+	2,  // 29: serialization.DbReachabilityData.children:type_name -> serialization.DbHash
+	2,  // 30: serialization.DbReachabilityData.parent:type_name -> serialization.DbHash
+	22, // 31: serialization.DbReachabilityData.interval:type_name -> serialization.DbReachabilityInterval
+	2,  // 32: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
+	18, // 33: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
+	18, // 34: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
+	2,  // 35: serialization.DbTips.tips:type_name -> serialization.DbHash
+	36, // [36:36] is the sub-list for method output_type
+	36, // [36:36] is the sub-list for method input_type
+	36, // [36:36] is the sub-list for extension type_name
+	36, // [36:36] is the sub-list for extension extendee
+	0,  // [0:36] is the sub-list for field type_name
 }
 
 func init() { file_dbobjects_proto_init() }

domain/consensus/database/serialization/dbobjects.proto

@@ -30,6 +30,7 @@ message DbTransaction {
   uint64 lockTime = 4;
   DbSubnetworkId subnetworkID = 5;
   uint64 gas = 6;
+  DbHash payloadHash = 7;
   bytes payload = 8;
 }
 
@@ -117,7 +118,7 @@ message DbScriptPublicKey {
 message DbUtxoEntry {
   uint64 amount = 1;
   DbScriptPublicKey scriptPublicKey = 2;
-  uint64 blockDaaScore = 3;
+  uint64 blockBlueScore = 3;
   bool isCoinbase = 4;
 }
 

domain/consensus/database/serialization/transaction.go

@@ -33,6 +33,7 @@ func DomainTransactionToDbTransaction(domainTransaction *externalapi.DomainTrans
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: DomainSubnetworkIDToDbSubnetworkID(&domainTransaction.SubnetworkID),
 		Gas:          domainTransaction.Gas,
+		PayloadHash:  DomainHashToDbHash(&domainTransaction.PayloadHash),
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -43,6 +44,10 @@ func DbTransactionToDomainTransaction(dbTransaction *DbTransaction) (*externalap
 	if err != nil {
 		return nil, err
 	}
+	domainPayloadHash, err := DbHashToDomainHash(dbTransaction.PayloadHash)
+	if err != nil {
+		return nil, err
+	}
 
 	domainInputs := make([]*externalapi.DomainTransactionInput, len(dbTransaction.Inputs))
 	for i, dbTransactionInput := range dbTransaction.Inputs {
@@ -79,6 +84,7 @@ func DbTransactionToDomainTransaction(dbTransaction *DbTransaction) (*externalap
 		LockTime:     dbTransaction.LockTime,
 		SubnetworkID: *domainSubnetworkID,
 		Gas:          dbTransaction.Gas,
+		PayloadHash:  *domainPayloadHash,
 		Payload:      dbTransaction.Payload,
 	}, nil
 }

domain/consensus/database/serialization/utxo_entry.go

@@ -26,7 +26,7 @@ func UTXOEntryToDBUTXOEntry(utxoEntry externalapi.UTXOEntry) *DbUtxoEntry {
 	return &DbUtxoEntry{
 		Amount:          utxoEntry.Amount(),
 		ScriptPublicKey: dbScriptPublicKey,
-		BlockDaaScore:   utxoEntry.BlockDAAScore(),
+		BlockBlueScore:  utxoEntry.BlockBlueScore(),
 		IsCoinbase:      utxoEntry.IsCoinbase(),
 	}
 }
@@ -37,5 +37,5 @@ func DBUTXOEntryToUTXOEntry(dbUtxoEntry *DbUtxoEntry) (externalapi.UTXOEntry, er
 	if err != nil {
 		return nil, err
 	}
-	return utxo.NewUTXOEntry(dbUtxoEntry.Amount, scriptPublicKey, dbUtxoEntry.IsCoinbase, dbUtxoEntry.BlockDaaScore), nil
+	return utxo.NewUTXOEntry(dbUtxoEntry.Amount, scriptPublicKey, dbUtxoEntry.IsCoinbase, dbUtxoEntry.BlockBlueScore), nil
 }

domain/consensus/datastructures/acceptancedatastore/acceptance_data_staging_shard.go

@@ -1,50 +0,0 @@
-package acceptancedatastore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type acceptanceDataStagingShard struct {
-	store    *acceptanceDataStore
-	toAdd    map[externalapi.DomainHash]externalapi.AcceptanceData
-	toDelete map[externalapi.DomainHash]struct{}
-}
-
-func (ads *acceptanceDataStore) stagingShard(stagingArea *model.StagingArea) *acceptanceDataStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDAcceptanceData, func() model.StagingShard {
-		return &acceptanceDataStagingShard{
-			store:    ads,
-			toAdd:    make(map[externalapi.DomainHash]externalapi.AcceptanceData),
-			toDelete: make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*acceptanceDataStagingShard)
-}
-
-func (adss *acceptanceDataStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, acceptanceData := range adss.toAdd {
-		acceptanceDataBytes, err := adss.store.serializeAcceptanceData(acceptanceData)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(adss.store.hashAsKey(&hash), acceptanceDataBytes)
-		if err != nil {
-			return err
-		}
-		adss.store.cache.Add(&hash, acceptanceData)
-	}
-
-	for hash := range adss.toDelete {
-		err := dbTx.Delete(adss.store.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		adss.store.cache.Remove(&hash)
-	}
-
-	return nil
-}
-
-func (adss *acceptanceDataStagingShard) isStaged() bool {
-	return len(adss.toAdd) != 0 || len(adss.toDelete) != 0
-}

domain/consensus/datastructures/acceptancedatastore/acceptancedatastore.go

@@ -13,31 +13,62 @@ var bucket = database.MakeBucket([]byte("acceptance-data"))
 
 // acceptanceDataStore represents a store of AcceptanceData
 type acceptanceDataStore struct {
-	cache *lrucache.LRUCache
+	staging  map[externalapi.DomainHash]externalapi.AcceptanceData
+	toDelete map[externalapi.DomainHash]struct{}
+	cache    *lrucache.LRUCache
 }
 
 // New instantiates a new AcceptanceDataStore
 func New(cacheSize int, preallocate bool) model.AcceptanceDataStore {
 	return &acceptanceDataStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging:  make(map[externalapi.DomainHash]externalapi.AcceptanceData),
+		toDelete: make(map[externalapi.DomainHash]struct{}),
+		cache:    lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given acceptanceData for the given blockHash
-func (ads *acceptanceDataStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData) {
-	stagingShard := ads.stagingShard(stagingArea)
-	stagingShard.toAdd[*blockHash] = acceptanceData.Clone()
+func (ads *acceptanceDataStore) Stage(blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData) {
+	ads.staging[*blockHash] = acceptanceData.Clone()
 }
 
-func (ads *acceptanceDataStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return ads.stagingShard(stagingArea).isStaged()
+func (ads *acceptanceDataStore) IsStaged() bool {
+	return len(ads.staging) != 0 || len(ads.toDelete) != 0
+}
+
+func (ads *acceptanceDataStore) Discard() {
+	ads.staging = make(map[externalapi.DomainHash]externalapi.AcceptanceData)
+	ads.toDelete = make(map[externalapi.DomainHash]struct{})
+}
+
+func (ads *acceptanceDataStore) Commit(dbTx model.DBTransaction) error {
+	for hash, acceptanceData := range ads.staging {
+		acceptanceDataBytes, err := ads.serializeAcceptanceData(acceptanceData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(ads.hashAsKey(&hash), acceptanceDataBytes)
+		if err != nil {
+			return err
+		}
+		ads.cache.Add(&hash, acceptanceData)
+	}
+
+	for hash := range ads.toDelete {
+		err := dbTx.Delete(ads.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		ads.cache.Remove(&hash)
+	}
+
+	ads.Discard()
+	return nil
 }
 
 // Get gets the acceptanceData associated with the given blockHash
-func (ads *acceptanceDataStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error) {
-	stagingShard := ads.stagingShard(stagingArea)
-
-	if acceptanceData, ok := stagingShard.toAdd[*blockHash]; ok {
+func (ads *acceptanceDataStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error) {
+	if acceptanceData, ok := ads.staging[*blockHash]; ok {
 		return acceptanceData.Clone(), nil
 	}
 
@@ -59,14 +90,12 @@ func (ads *acceptanceDataStore) Get(dbContext model.DBReader, stagingArea *model
 }
 
 // Delete deletes the acceptanceData associated with the given blockHash
-func (ads *acceptanceDataStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := ads.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
-		delete(stagingShard.toAdd, *blockHash)
+func (ads *acceptanceDataStore) Delete(blockHash *externalapi.DomainHash) {
+	if _, ok := ads.staging[*blockHash]; ok {
+		delete(ads.staging, *blockHash)
 		return
 	}
-	stagingShard.toDelete[*blockHash] = struct{}{}
+	ads.toDelete[*blockHash] = struct{}{}
 }
 
 func (ads *acceptanceDataStore) serializeAcceptanceData(acceptanceData externalapi.AcceptanceData) ([]byte, error) {

domain/consensus/datastructures/blockheaderstore/block_header_staging_shard.go

@@ -1,69 +0,0 @@
-package blockheaderstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type blockHeaderStagingShard struct {
-	store    *blockHeaderStore
-	toAdd    map[externalapi.DomainHash]externalapi.BlockHeader
-	toDelete map[externalapi.DomainHash]struct{}
-}
-
-func (bhs *blockHeaderStore) stagingShard(stagingArea *model.StagingArea) *blockHeaderStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockHeader, func() model.StagingShard {
-		return &blockHeaderStagingShard{
-			store:    bhs,
-			toAdd:    make(map[externalapi.DomainHash]externalapi.BlockHeader),
-			toDelete: make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*blockHeaderStagingShard)
-}
-
-func (bhss *blockHeaderStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, header := range bhss.toAdd {
-		headerBytes, err := bhss.store.serializeHeader(header)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bhss.store.hashAsKey(&hash), headerBytes)
-		if err != nil {
-			return err
-		}
-		bhss.store.cache.Add(&hash, header)
-	}
-
-	for hash := range bhss.toDelete {
-		err := dbTx.Delete(bhss.store.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		bhss.store.cache.Remove(&hash)
-	}
-
-	err := bhss.commitCount(dbTx)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (bhss *blockHeaderStagingShard) commitCount(dbTx model.DBTransaction) error {
-	count := bhss.store.count(bhss)
-	countBytes, err := bhss.store.serializeHeaderCount(count)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(countKey, countBytes)
-	if err != nil {
-		return err
-	}
-	bhss.store.countCached = count
-	return nil
-}
-
-func (bhss *blockHeaderStagingShard) isStaged() bool {
-	return len(bhss.toAdd) != 0 || len(bhss.toDelete) != 0
-}

domain/consensus/datastructures/blockheaderstore/blockheaderstore.go

@@ -14,14 +14,18 @@ var countKey = database.MakeBucket(nil).Key([]byte("block-headers-count"))
 
 // blockHeaderStore represents a store of blocks
 type blockHeaderStore struct {
-	cache       *lrucache.LRUCache
-	countCached uint64
+	staging  map[externalapi.DomainHash]externalapi.BlockHeader
+	toDelete map[externalapi.DomainHash]struct{}
+	cache    *lrucache.LRUCache
+	count    uint64
 }
 
 // New instantiates a new BlockHeaderStore
 func New(dbContext model.DBReader, cacheSize int, preallocate bool) (model.BlockHeaderStore, error) {
 	blockHeaderStore := &blockHeaderStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging:  make(map[externalapi.DomainHash]externalapi.BlockHeader),
+		toDelete: make(map[externalapi.DomainHash]struct{}),
+		cache:    lrucache.New(cacheSize, preallocate),
 	}
 
 	err := blockHeaderStore.initializeCount(dbContext)
@@ -48,33 +52,57 @@ func (bhs *blockHeaderStore) initializeCount(dbContext model.DBReader) error {
 			return err
 		}
 	}
-	bhs.countCached = count
+	bhs.count = count
 	return nil
 }
 
 // Stage stages the given block header for the given blockHash
-func (bhs *blockHeaderStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader) {
-	stagingShard := bhs.stagingShard(stagingArea)
-	stagingShard.toAdd[*blockHash] = blockHeader
+func (bhs *blockHeaderStore) Stage(blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader) {
+	bhs.staging[*blockHash] = blockHeader
 }
 
-func (bhs *blockHeaderStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return bhs.stagingShard(stagingArea).isStaged()
+func (bhs *blockHeaderStore) IsStaged() bool {
+	return len(bhs.staging) != 0 || len(bhs.toDelete) != 0
+}
+
+func (bhs *blockHeaderStore) Discard() {
+	bhs.staging = make(map[externalapi.DomainHash]externalapi.BlockHeader)
+	bhs.toDelete = make(map[externalapi.DomainHash]struct{})
+}
+
+func (bhs *blockHeaderStore) Commit(dbTx model.DBTransaction) error {
+	for hash, header := range bhs.staging {
+		headerBytes, err := bhs.serializeHeader(header)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bhs.hashAsKey(&hash), headerBytes)
+		if err != nil {
+			return err
+		}
+		bhs.cache.Add(&hash, header)
+	}
+
+	for hash := range bhs.toDelete {
+		err := dbTx.Delete(bhs.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		bhs.cache.Remove(&hash)
+	}
+
+	err := bhs.commitCount(dbTx)
+	if err != nil {
+		return err
+	}
+
+	bhs.Discard()
+	return nil
 }
 
 // BlockHeader gets the block header associated with the given blockHash
-func (bhs *blockHeaderStore) BlockHeader(dbContext model.DBReader, stagingArea *model.StagingArea,
-	blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
-
-	stagingShard := bhs.stagingShard(stagingArea)
-
-	return bhs.blockHeader(dbContext, stagingShard, blockHash)
-}
-
-func (bhs *blockHeaderStore) blockHeader(dbContext model.DBReader, stagingShard *blockHeaderStagingShard,
-	blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
-
-	if header, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bhs *blockHeaderStore) BlockHeader(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
+	if header, ok := bhs.staging[*blockHash]; ok {
 		return header, nil
 	}
 
@@ -96,10 +124,8 @@ func (bhs *blockHeaderStore) blockHeader(dbContext model.DBReader, stagingShard
 }
 
 // HasBlock returns whether a block header with a given hash exists in the store.
-func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := bhs.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := bhs.staging[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -116,15 +142,11 @@ func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, stagingAre
 }
 
 // BlockHeaders gets the block headers associated with the given blockHashes
-func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, stagingArea *model.StagingArea,
-	blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error) {
-
-	stagingShard := bhs.stagingShard(stagingArea)
-
+func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error) {
 	headers := make([]externalapi.BlockHeader, len(blockHashes))
 	for i, hash := range blockHashes {
 		var err error
-		headers[i], err = bhs.blockHeader(dbContext, stagingShard, hash)
+		headers[i], err = bhs.BlockHeader(dbContext, hash)
 		if err != nil {
 			return nil, err
 		}
@@ -133,14 +155,12 @@ func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, stagingArea
 }
 
 // Delete deletes the block associated with the given blockHash
-func (bhs *blockHeaderStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := bhs.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
-		delete(stagingShard.toAdd, *blockHash)
+func (bhs *blockHeaderStore) Delete(blockHash *externalapi.DomainHash) {
+	if _, ok := bhs.staging[*blockHash]; ok {
+		delete(bhs.staging, *blockHash)
 		return
 	}
-	stagingShard.toDelete[*blockHash] = struct{}{}
+	bhs.toDelete[*blockHash] = struct{}{}
 }
 
 func (bhs *blockHeaderStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
@@ -161,14 +181,8 @@ func (bhs *blockHeaderStore) deserializeHeader(headerBytes []byte) (externalapi.
 	return serialization.DbBlockHeaderToDomainBlockHeader(dbBlockHeader)
 }
 
-func (bhs *blockHeaderStore) Count(stagingArea *model.StagingArea) uint64 {
-	stagingShard := bhs.stagingShard(stagingArea)
-
-	return bhs.count(stagingShard)
-}
-
-func (bhs *blockHeaderStore) count(stagingShard *blockHeaderStagingShard) uint64 {
-	return bhs.countCached + uint64(len(stagingShard.toAdd)) - uint64(len(stagingShard.toDelete))
+func (bhs *blockHeaderStore) Count() uint64 {
+	return bhs.count + uint64(len(bhs.staging)) - uint64(len(bhs.toDelete))
 }
 
 func (bhs *blockHeaderStore) deserializeHeaderCount(countBytes []byte) (uint64, error) {
@@ -180,6 +194,20 @@ func (bhs *blockHeaderStore) deserializeHeaderCount(countBytes []byte) (uint64,
 	return dbBlockHeaderCount.Count, nil
 }
 
+func (bhs *blockHeaderStore) commitCount(dbTx model.DBTransaction) error {
+	count := bhs.Count()
+	countBytes, err := bhs.serializeHeaderCount(count)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(countKey, countBytes)
+	if err != nil {
+		return err
+	}
+	bhs.count = count
+	return nil
+}
+
 func (bhs *blockHeaderStore) serializeHeaderCount(count uint64) ([]byte, error) {
 	dbBlockHeaderCount := &serialization.DbBlockHeaderCount{Count: count}
 	return proto.Marshal(dbBlockHeaderCount)

domain/consensus/datastructures/blockrelationstore/block_relation_staging_shard.go

@@ -1,40 +0,0 @@
-package blockrelationstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type blockRelationStagingShard struct {
-	store *blockRelationStore
-	toAdd map[externalapi.DomainHash]*model.BlockRelations
-}
-
-func (brs *blockRelationStore) stagingShard(stagingArea *model.StagingArea) *blockRelationStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockRelation, func() model.StagingShard {
-		return &blockRelationStagingShard{
-			store: brs,
-			toAdd: make(map[externalapi.DomainHash]*model.BlockRelations),
-		}
-	}).(*blockRelationStagingShard)
-}
-
-func (brss *blockRelationStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, blockRelations := range brss.toAdd {
-		blockRelationBytes, err := brss.store.serializeBlockRelations(blockRelations)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(brss.store.hashAsKey(&hash), blockRelationBytes)
-		if err != nil {
-			return err
-		}
-		brss.store.cache.Add(&hash, blockRelations)
-	}
-
-	return nil
-}
-
-func (brss *blockRelationStagingShard) isStaged() bool {
-	return len(brss.toAdd) != 0
-}

domain/consensus/datastructures/blockrelationstore/blockrelationstore.go

@@ -13,30 +13,49 @@ var bucket = database.MakeBucket([]byte("block-relations"))
 
 // blockRelationStore represents a store of BlockRelations
 type blockRelationStore struct {
-	cache *lrucache.LRUCache
+	staging map[externalapi.DomainHash]*model.BlockRelations
+	cache   *lrucache.LRUCache
 }
 
 // New instantiates a new BlockRelationStore
 func New(cacheSize int, preallocate bool) model.BlockRelationStore {
 	return &blockRelationStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging: make(map[externalapi.DomainHash]*model.BlockRelations),
+		cache:   lrucache.New(cacheSize, preallocate),
 	}
 }
 
-func (brs *blockRelationStore) StageBlockRelation(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockRelations *model.BlockRelations) {
-	stagingShard := brs.stagingShard(stagingArea)
-
-	stagingShard.toAdd[*blockHash] = blockRelations.Clone()
+func (brs *blockRelationStore) StageBlockRelation(blockHash *externalapi.DomainHash, blockRelations *model.BlockRelations) {
+	brs.staging[*blockHash] = blockRelations.Clone()
 }
 
-func (brs *blockRelationStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return brs.stagingShard(stagingArea).isStaged()
+func (brs *blockRelationStore) IsStaged() bool {
+	return len(brs.staging) != 0
 }
 
-func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*model.BlockRelations, error) {
-	stagingShard := brs.stagingShard(stagingArea)
+func (brs *blockRelationStore) Discard() {
+	brs.staging = make(map[externalapi.DomainHash]*model.BlockRelations)
+}
 
-	if blockRelations, ok := stagingShard.toAdd[*blockHash]; ok {
+func (brs *blockRelationStore) Commit(dbTx model.DBTransaction) error {
+	for hash, blockRelations := range brs.staging {
+		blockRelationBytes, err := brs.serializeBlockRelations(blockRelations)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(brs.hashAsKey(&hash), blockRelationBytes)
+		if err != nil {
+			return err
+		}
+		brs.cache.Add(&hash, blockRelations)
+	}
+
+	brs.Discard()
+	return nil
+}
+
+func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*model.BlockRelations, error) {
+	if blockRelations, ok := brs.staging[*blockHash]; ok {
 		return blockRelations.Clone(), nil
 	}
 
@@ -57,10 +76,8 @@ func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, stagingAr
 	return blockRelations.Clone(), nil
 }
 
-func (brs *blockRelationStore) Has(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := brs.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+func (brs *blockRelationStore) Has(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := brs.staging[*blockHash]; ok {
 		return true, nil
 	}
 

domain/consensus/datastructures/blockstatusstore/block_status_staging_shard.go

@@ -1,40 +0,0 @@
-package blockstatusstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type blockStatusStagingShard struct {
-	store *blockStatusStore
-	toAdd map[externalapi.DomainHash]externalapi.BlockStatus
-}
-
-func (bss *blockStatusStore) stagingShard(stagingArea *model.StagingArea) *blockStatusStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockStatus, func() model.StagingShard {
-		return &blockStatusStagingShard{
-			store: bss,
-			toAdd: make(map[externalapi.DomainHash]externalapi.BlockStatus),
-		}
-	}).(*blockStatusStagingShard)
-}
-
-func (bsss *blockStatusStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, status := range bsss.toAdd {
-		blockStatusBytes, err := bsss.store.serializeBlockStatus(status)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bsss.store.hashAsKey(&hash), blockStatusBytes)
-		if err != nil {
-			return err
-		}
-		bsss.store.cache.Add(&hash, status)
-	}
-
-	return nil
-}
-
-func (bsss *blockStatusStagingShard) isStaged() bool {
-	return len(bsss.toAdd) != 0
-}

domain/consensus/datastructures/blockstatusstore/blockstatusstore.go

@@ -13,31 +13,51 @@ var bucket = database.MakeBucket([]byte("block-statuses"))
 
 // blockStatusStore represents a store of BlockStatuses
 type blockStatusStore struct {
-	cache *lrucache.LRUCache
+	staging map[externalapi.DomainHash]externalapi.BlockStatus
+	cache   *lrucache.LRUCache
 }
 
 // New instantiates a new BlockStatusStore
 func New(cacheSize int, preallocate bool) model.BlockStatusStore {
 	return &blockStatusStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging: make(map[externalapi.DomainHash]externalapi.BlockStatus),
+		cache:   lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given blockStatus for the given blockHash
-func (bss *blockStatusStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus) {
-	stagingShard := bss.stagingShard(stagingArea)
-	stagingShard.toAdd[*blockHash] = blockStatus.Clone()
+func (bss *blockStatusStore) Stage(blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus) {
+	bss.staging[*blockHash] = blockStatus.Clone()
 }
 
-func (bss *blockStatusStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return bss.stagingShard(stagingArea).isStaged()
+func (bss *blockStatusStore) IsStaged() bool {
+	return len(bss.staging) != 0
+}
+
+func (bss *blockStatusStore) Discard() {
+	bss.staging = make(map[externalapi.DomainHash]externalapi.BlockStatus)
+}
+
+func (bss *blockStatusStore) Commit(dbTx model.DBTransaction) error {
+	for hash, status := range bss.staging {
+		blockStatusBytes, err := bss.serializeBlockStatus(status)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bss.hashAsKey(&hash), blockStatusBytes)
+		if err != nil {
+			return err
+		}
+		bss.cache.Add(&hash, status)
+	}
+
+	bss.Discard()
+	return nil
 }
 
 // Get gets the blockStatus associated with the given blockHash
-func (bss *blockStatusStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error) {
-	stagingShard := bss.stagingShard(stagingArea)
-
-	if status, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bss *blockStatusStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error) {
+	if status, ok := bss.staging[*blockHash]; ok {
 		return status, nil
 	}
 
@@ -59,10 +79,8 @@ func (bss *blockStatusStore) Get(dbContext model.DBReader, stagingArea *model.St
 }
 
 // Exists returns true if the blockStatus for the given blockHash exists
-func (bss *blockStatusStore) Exists(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := bss.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bss *blockStatusStore) Exists(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := bss.staging[*blockHash]; ok {
 		return true, nil
 	}
 

domain/consensus/datastructures/blockstore/block_staging_shard.go

@@ -1,69 +0,0 @@
-package blockstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type blockStagingShard struct {
-	store    *blockStore
-	toAdd    map[externalapi.DomainHash]*externalapi.DomainBlock
-	toDelete map[externalapi.DomainHash]struct{}
-}
-
-func (bs *blockStore) stagingShard(stagingArea *model.StagingArea) *blockStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDBlock, func() model.StagingShard {
-		return &blockStagingShard{
-			store:    bs,
-			toAdd:    make(map[externalapi.DomainHash]*externalapi.DomainBlock),
-			toDelete: make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*blockStagingShard)
-}
-
-func (bss *blockStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, block := range bss.toAdd {
-		blockBytes, err := bss.store.serializeBlock(block)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bss.store.hashAsKey(&hash), blockBytes)
-		if err != nil {
-			return err
-		}
-		bss.store.cache.Add(&hash, block)
-	}
-
-	for hash := range bss.toDelete {
-		err := dbTx.Delete(bss.store.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		bss.store.cache.Remove(&hash)
-	}
-
-	err := bss.commitCount(dbTx)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (bss *blockStagingShard) commitCount(dbTx model.DBTransaction) error {
-	count := bss.store.count(bss)
-	countBytes, err := bss.store.serializeBlockCount(count)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(countKey, countBytes)
-	if err != nil {
-		return err
-	}
-	bss.store.countCached = count
-	return nil
-}
-
-func (bss *blockStagingShard) isStaged() bool {
-	return len(bss.toAdd) != 0 || len(bss.toDelete) != 0
-}

domain/consensus/datastructures/blockstore/blockstore.go

@@ -15,14 +15,18 @@ var countKey = database.MakeBucket(nil).Key([]byte("blocks-count"))
 
 // blockStore represents a store of blocks
 type blockStore struct {
-	cache       *lrucache.LRUCache
-	countCached uint64
+	staging  map[externalapi.DomainHash]*externalapi.DomainBlock
+	toDelete map[externalapi.DomainHash]struct{}
+	cache    *lrucache.LRUCache
+	count    uint64
 }
 
 // New instantiates a new BlockStore
 func New(dbContext model.DBReader, cacheSize int, preallocate bool) (model.BlockStore, error) {
 	blockStore := &blockStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging:  make(map[externalapi.DomainHash]*externalapi.DomainBlock),
+		toDelete: make(map[externalapi.DomainHash]struct{}),
+		cache:    lrucache.New(cacheSize, preallocate),
 	}
 
 	err := blockStore.initializeCount(dbContext)
@@ -49,29 +53,57 @@ func (bs *blockStore) initializeCount(dbContext model.DBReader) error {
 			return err
 		}
 	}
-	bs.countCached = count
+	bs.count = count
 	return nil
 }
 
 // Stage stages the given block for the given blockHash
-func (bs *blockStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, block *externalapi.DomainBlock) {
-	stagingShard := bs.stagingShard(stagingArea)
-	stagingShard.toAdd[*blockHash] = block.Clone()
+func (bs *blockStore) Stage(blockHash *externalapi.DomainHash, block *externalapi.DomainBlock) {
+	bs.staging[*blockHash] = block.Clone()
 }
 
-func (bs *blockStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return bs.stagingShard(stagingArea).isStaged()
+func (bs *blockStore) IsStaged() bool {
+	return len(bs.staging) != 0 || len(bs.toDelete) != 0
+}
+
+func (bs *blockStore) Discard() {
+	bs.staging = make(map[externalapi.DomainHash]*externalapi.DomainBlock)
+	bs.toDelete = make(map[externalapi.DomainHash]struct{})
+}
+
+func (bs *blockStore) Commit(dbTx model.DBTransaction) error {
+	for hash, block := range bs.staging {
+		blockBytes, err := bs.serializeBlock(block)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bs.hashAsKey(&hash), blockBytes)
+		if err != nil {
+			return err
+		}
+		bs.cache.Add(&hash, block)
+	}
+
+	for hash := range bs.toDelete {
+		err := dbTx.Delete(bs.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		bs.cache.Remove(&hash)
+	}
+
+	err := bs.commitCount(dbTx)
+	if err != nil {
+		return err
+	}
+
+	bs.Discard()
+	return nil
 }
 
 // Block gets the block associated with the given blockHash
-func (bs *blockStore) Block(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
-	stagingShard := bs.stagingShard(stagingArea)
-
-	return bs.block(dbContext, stagingShard, blockHash)
-}
-
-func (bs *blockStore) block(dbContext model.DBReader, stagingShard *blockStagingShard, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
-	if block, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bs *blockStore) Block(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
+	if block, ok := bs.staging[*blockHash]; ok {
 		return block.Clone(), nil
 	}
 
@@ -93,10 +125,8 @@ func (bs *blockStore) block(dbContext model.DBReader, stagingShard *blockStaging
 }
 
 // HasBlock returns whether a block with a given hash exists in the store.
-func (bs *blockStore) HasBlock(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := bs.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+func (bs *blockStore) HasBlock(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := bs.staging[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -113,13 +143,11 @@ func (bs *blockStore) HasBlock(dbContext model.DBReader, stagingArea *model.Stag
 }
 
 // Blocks gets the blocks associated with the given blockHashes
-func (bs *blockStore) Blocks(dbContext model.DBReader, stagingArea *model.StagingArea, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error) {
-	stagingShard := bs.stagingShard(stagingArea)
-
+func (bs *blockStore) Blocks(dbContext model.DBReader, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error) {
 	blocks := make([]*externalapi.DomainBlock, len(blockHashes))
 	for i, hash := range blockHashes {
 		var err error
-		blocks[i], err = bs.block(dbContext, stagingShard, hash)
+		blocks[i], err = bs.Block(dbContext, hash)
 		if err != nil {
 			return nil, err
 		}
@@ -128,14 +156,12 @@ func (bs *blockStore) Blocks(dbContext model.DBReader, stagingArea *model.Stagin
 }
 
 // Delete deletes the block associated with the given blockHash
-func (bs *blockStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := bs.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
-		delete(stagingShard.toAdd, *blockHash)
+func (bs *blockStore) Delete(blockHash *externalapi.DomainHash) {
+	if _, ok := bs.staging[*blockHash]; ok {
+		delete(bs.staging, *blockHash)
 		return
 	}
-	stagingShard.toDelete[*blockHash] = struct{}{}
+	bs.toDelete[*blockHash] = struct{}{}
 }
 
 func (bs *blockStore) serializeBlock(block *externalapi.DomainBlock) ([]byte, error) {
@@ -156,13 +182,8 @@ func (bs *blockStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
 	return bucket.Key(hash.ByteSlice())
 }
 
-func (bs *blockStore) Count(stagingArea *model.StagingArea) uint64 {
-	stagingShard := bs.stagingShard(stagingArea)
-	return bs.count(stagingShard)
-}
-
-func (bs *blockStore) count(stagingShard *blockStagingShard) uint64 {
-	return bs.countCached + uint64(len(stagingShard.toAdd)) - uint64(len(stagingShard.toDelete))
+func (bs *blockStore) Count() uint64 {
+	return bs.count + uint64(len(bs.staging)) - uint64(len(bs.toDelete))
 }
 
 func (bs *blockStore) deserializeBlockCount(countBytes []byte) (uint64, error) {
@@ -174,6 +195,20 @@ func (bs *blockStore) deserializeBlockCount(countBytes []byte) (uint64, error) {
 	return dbBlockCount.Count, nil
 }
 
+func (bs *blockStore) commitCount(dbTx model.DBTransaction) error {
+	count := bs.Count()
+	countBytes, err := bs.serializeBlockCount(count)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(countKey, countBytes)
+	if err != nil {
+		return err
+	}
+	bs.count = count
+	return nil
+}
+
 func (bs *blockStore) serializeBlockCount(count uint64) ([]byte, error) {
 	dbBlockCount := &serialization.DbBlockCount{Count: count}
 	return proto.Marshal(dbBlockCount)

domain/consensus/datastructures/consensusstatestore/consensus_state_staging_shard.go

@@ -1,40 +0,0 @@
-package consensusstatestore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type consensusStateStagingShard struct {
-	store                  *consensusStateStore
-	tipsStaging            []*externalapi.DomainHash
-	virtualUTXODiffStaging externalapi.UTXODiff
-}
-
-func (bs *consensusStateStore) stagingShard(stagingArea *model.StagingArea) *consensusStateStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDConsensusState, func() model.StagingShard {
-		return &consensusStateStagingShard{
-			store:                  bs,
-			tipsStaging:            nil,
-			virtualUTXODiffStaging: nil,
-		}
-	}).(*consensusStateStagingShard)
-}
-
-func (csss *consensusStateStagingShard) Commit(dbTx model.DBTransaction) error {
-	err := csss.commitTips(dbTx)
-	if err != nil {
-		return err
-	}
-
-	err = csss.commitVirtualUTXODiff(dbTx)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (csss *consensusStateStagingShard) isStaged() bool {
-	return csss.tipsStaging != nil || csss.virtualUTXODiffStaging != nil
-}

domain/consensus/datastructures/consensusstatestore/consensusstatestore.go

@@ -8,6 +8,9 @@ import (
 
 // consensusStateStore represents a store for the current consensus state
 type consensusStateStore struct {
+	tipsStaging            []*externalapi.DomainHash
+	virtualUTXODiffStaging externalapi.UTXODiff
+
 	virtualUTXOSetCache *utxolrucache.LRUCache
 
 	tipsCache []*externalapi.DomainHash
@@ -20,6 +23,28 @@ func New(utxoSetCacheSize int, preallocate bool) model.ConsensusStateStore {
 	}
 }
 
-func (css *consensusStateStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return css.stagingShard(stagingArea).isStaged()
+func (css *consensusStateStore) Discard() {
+	css.tipsStaging = nil
+	css.virtualUTXODiffStaging = nil
+}
+
+func (css *consensusStateStore) Commit(dbTx model.DBTransaction) error {
+	err := css.commitTips(dbTx)
+	if err != nil {
+		return err
+	}
+
+	err = css.commitVirtualUTXODiff(dbTx)
+	if err != nil {
+		return err
+	}
+
+	css.Discard()
+
+	return nil
+}
+
+func (css *consensusStateStore) IsStaged() bool {
+	return css.tipsStaging != nil ||
+		css.virtualUTXODiffStaging != nil
 }

domain/consensus/datastructures/consensusstatestore/tips.go

@@ -10,11 +10,9 @@ import (
 
 var tipsKey = database.MakeBucket(nil).Key([]byte("tips"))
 
-func (css *consensusStateStore) Tips(stagingArea *model.StagingArea, dbContext model.DBReader) ([]*externalapi.DomainHash, error) {
-	stagingShard := css.stagingShard(stagingArea)
-
-	if stagingShard.tipsStaging != nil {
-		return externalapi.CloneHashes(stagingShard.tipsStaging), nil
+func (css *consensusStateStore) Tips(dbContext model.DBReader) ([]*externalapi.DomainHash, error) {
+	if css.tipsStaging != nil {
+		return externalapi.CloneHashes(css.tipsStaging), nil
 	}
 
 	if css.tipsCache != nil {
@@ -34,10 +32,28 @@ func (css *consensusStateStore) Tips(stagingArea *model.StagingArea, dbContext m
 	return externalapi.CloneHashes(tips), nil
 }
 
-func (css *consensusStateStore) StageTips(stagingArea *model.StagingArea, tipHashes []*externalapi.DomainHash) {
-	stagingShard := css.stagingShard(stagingArea)
+func (css *consensusStateStore) StageTips(tipHashes []*externalapi.DomainHash) {
+	css.tipsStaging = externalapi.CloneHashes(tipHashes)
+}
 
-	stagingShard.tipsStaging = externalapi.CloneHashes(tipHashes)
+func (css *consensusStateStore) commitTips(dbTx model.DBTransaction) error {
+	if css.tipsStaging == nil {
+		return nil
+	}
+
+	tipsBytes, err := css.serializeTips(css.tipsStaging)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(tipsKey, tipsBytes)
+	if err != nil {
+		return err
+	}
+	css.tipsCache = css.tipsStaging
+
+	// Note: we don't discard the staging here since that's
+	// being done at the end of Commit()
+	return nil
 }
 
 func (css *consensusStateStore) serializeTips(tips []*externalapi.DomainHash) ([]byte, error) {
@@ -56,21 +72,3 @@ func (css *consensusStateStore) deserializeTips(tipsBytes []byte) ([]*externalap
 
 	return serialization.DBTipsToTips(dbTips)
 }
-
-func (csss *consensusStateStagingShard) commitTips(dbTx model.DBTransaction) error {
-	if csss.tipsStaging == nil {
-		return nil
-	}
-
-	tipsBytes, err := csss.store.serializeTips(csss.tipsStaging)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(tipsKey, tipsBytes)
-	if err != nil {
-		return err
-	}
-	csss.store.tipsCache = csss.tipsStaging
-
-	return nil
-}

domain/consensus/datastructures/consensusstatestore/utxo.go

@@ -19,14 +19,12 @@ func utxoKey(outpoint *externalapi.DomainOutpoint) (model.DBKey, error) {
 	return utxoSetBucket.Key(serializedOutpoint), nil
 }
 
-func (css *consensusStateStore) StageVirtualUTXODiff(stagingArea *model.StagingArea, virtualUTXODiff externalapi.UTXODiff) {
-	stagingShard := css.stagingShard(stagingArea)
-
-	stagingShard.virtualUTXODiffStaging = virtualUTXODiff
+func (css *consensusStateStore) StageVirtualUTXODiff(virtualUTXODiff externalapi.UTXODiff) {
+	css.virtualUTXODiffStaging = virtualUTXODiff
 }
 
-func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTransaction) error {
-	hadStartedImportingPruningPointUTXOSet, err := csss.store.HadStartedImportingPruningPointUTXOSet(dbTx)
+func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction) error {
+	hadStartedImportingPruningPointUTXOSet, err := css.HadStartedImportingPruningPointUTXOSet(dbTx)
 	if err != nil {
 		return err
 	}
@@ -34,11 +32,11 @@ func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTrans
 		return errors.New("cannot commit virtual UTXO diff after starting to import the pruning point UTXO set")
 	}
 
-	if csss.virtualUTXODiffStaging == nil {
+	if css.virtualUTXODiffStaging == nil {
 		return nil
 	}
 
-	toRemoveIterator := csss.virtualUTXODiffStaging.ToRemove().Iterator()
+	toRemoveIterator := css.virtualUTXODiffStaging.ToRemove().Iterator()
 	defer toRemoveIterator.Close()
 	for ok := toRemoveIterator.First(); ok; ok = toRemoveIterator.Next() {
 		toRemoveOutpoint, _, err := toRemoveIterator.Get()
@@ -46,7 +44,7 @@ func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTrans
 			return err
 		}
 
-		csss.store.virtualUTXOSetCache.Remove(toRemoveOutpoint)
+		css.virtualUTXOSetCache.Remove(toRemoveOutpoint)
 
 		dbKey, err := utxoKey(toRemoveOutpoint)
 		if err != nil {
@@ -58,7 +56,7 @@ func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTrans
 		}
 	}
 
-	toAddIterator := csss.virtualUTXODiffStaging.ToAdd().Iterator()
+	toAddIterator := css.virtualUTXODiffStaging.ToAdd().Iterator()
 	defer toAddIterator.Close()
 	for ok := toAddIterator.First(); ok; ok = toAddIterator.Next() {
 		toAddOutpoint, toAddEntry, err := toAddIterator.Get()
@@ -66,7 +64,7 @@ func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTrans
 			return err
 		}
 
-		csss.store.virtualUTXOSetCache.Add(toAddOutpoint, toAddEntry)
+		css.virtualUTXOSetCache.Add(toAddOutpoint, toAddEntry)
 
 		dbKey, err := utxoKey(toAddOutpoint)
 		if err != nil {
@@ -87,22 +85,21 @@ func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTrans
 	return nil
 }
 
-func (css *consensusStateStore) UTXOByOutpoint(dbContext model.DBReader, stagingArea *model.StagingArea,
-	outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error) {
+func (css *consensusStateStore) UTXOByOutpoint(dbContext model.DBReader, outpoint *externalapi.DomainOutpoint) (
+	externalapi.UTXOEntry, error) {
 
-	stagingShard := css.stagingShard(stagingArea)
-
-	return css.utxoByOutpointFromStagedVirtualUTXODiff(dbContext, stagingShard, outpoint)
+	return css.utxoByOutpointFromStagedVirtualUTXODiff(dbContext, outpoint)
 }
 
 func (css *consensusStateStore) utxoByOutpointFromStagedVirtualUTXODiff(dbContext model.DBReader,
-	stagingShard *consensusStateStagingShard, outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error) {
+	outpoint *externalapi.DomainOutpoint) (
+	externalapi.UTXOEntry, error) {
 
-	if stagingShard.virtualUTXODiffStaging != nil {
-		if stagingShard.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
+	if css.virtualUTXODiffStaging != nil {
+		if css.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
 			return nil, errors.Errorf("outpoint was not found")
 		}
-		if utxoEntry, ok := stagingShard.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
+		if utxoEntry, ok := css.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
 			return utxoEntry, nil
 		}
 	}
@@ -130,22 +127,18 @@ func (css *consensusStateStore) utxoByOutpointFromStagedVirtualUTXODiff(dbContex
 	return entry, nil
 }
 
-func (css *consensusStateStore) HasUTXOByOutpoint(dbContext model.DBReader, stagingArea *model.StagingArea,
-	outpoint *externalapi.DomainOutpoint) (bool, error) {
-
-	stagingShard := css.stagingShard(stagingArea)
-
-	return css.hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext, stagingShard, outpoint)
+func (css *consensusStateStore) HasUTXOByOutpoint(dbContext model.DBReader, outpoint *externalapi.DomainOutpoint) (bool, error) {
+	return css.hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext, outpoint)
 }
 
 func (css *consensusStateStore) hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext model.DBReader,
-	stagingShard *consensusStateStagingShard, outpoint *externalapi.DomainOutpoint) (bool, error) {
+	outpoint *externalapi.DomainOutpoint) (bool, error) {
 
-	if stagingShard.virtualUTXODiffStaging != nil {
-		if stagingShard.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
+	if css.virtualUTXODiffStaging != nil {
+		if css.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
 			return false, nil
 		}
-		if _, ok := stagingShard.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
+		if _, ok := css.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
 			return true, nil
 		}
 	}
@@ -158,8 +151,8 @@ func (css *consensusStateStore) hasUTXOByOutpointFromStagedVirtualUTXODiff(dbCon
 	return dbContext.Has(key)
 }
 
-func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader, fromOutpoint *externalapi.DomainOutpoint, limit int) (
-	[]*externalapi.OutpointAndUTXOEntryPair, error) {
+func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader,
+	fromOutpoint *externalapi.DomainOutpoint, limit int) ([]*externalapi.OutpointAndUTXOEntryPair, error) {
 
 	cursor, err := dbContext.Cursor(utxoSetBucket)
 	if err != nil {
@@ -196,19 +189,15 @@ func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader, fromOutpo
 	return outpointAndUTXOEntryPairs, nil
 }
 
-func (css *consensusStateStore) VirtualUTXOSetIterator(dbContext model.DBReader, stagingArea *model.StagingArea) (
-	externalapi.ReadOnlyUTXOSetIterator, error) {
-
-	stagingShard := css.stagingShard(stagingArea)
-
+func (css *consensusStateStore) VirtualUTXOSetIterator(dbContext model.DBReader) (externalapi.ReadOnlyUTXOSetIterator, error) {
 	cursor, err := dbContext.Cursor(utxoSetBucket)
 	if err != nil {
 		return nil, err
 	}
 
 	mainIterator := newCursorUTXOSetIterator(cursor)
-	if stagingShard.virtualUTXODiffStaging != nil {
-		return utxo.IteratorWithDiff(mainIterator, stagingShard.virtualUTXODiffStaging)
+	if css.virtualUTXODiffStaging != nil {
+		return utxo.IteratorWithDiff(mainIterator, css.virtualUTXODiffStaging)
 	}
 
 	return mainIterator, nil

domain/consensus/datastructures/consensusstatestore/virtual_utxo_set.go

@@ -24,6 +24,10 @@ func (css *consensusStateStore) FinishImportingPruningPointUTXOSet(dbContext mod
 func (css *consensusStateStore) ImportPruningPointUTXOSetIntoVirtualUTXOSet(dbContext model.DBWriter,
 	pruningPointUTXOSetIterator externalapi.ReadOnlyUTXOSetIterator) error {
 
+	if css.virtualUTXODiffStaging != nil {
+		return errors.New("cannot import virtual UTXO set while virtual UTXO diff is staged")
+	}
+
 	hadStartedImportingPruningPointUTXOSet, err := css.HadStartedImportingPruningPointUTXOSet(dbContext)
 	if err != nil {
 		return err

domain/consensus/datastructures/daablocksstore/daa_blocks_staging_shard.go

@@ -1,72 +0,0 @@
-package daablocksstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type daaBlocksStagingShard struct {
-	store                  *daaBlocksStore
-	daaScoreToAdd          map[externalapi.DomainHash]uint64
-	daaAddedBlocksToAdd    map[externalapi.DomainHash][]*externalapi.DomainHash
-	daaScoreToDelete       map[externalapi.DomainHash]struct{}
-	daaAddedBlocksToDelete map[externalapi.DomainHash]struct{}
-}
-
-func (daas *daaBlocksStore) stagingShard(stagingArea *model.StagingArea) *daaBlocksStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDDAABlocks, func() model.StagingShard {
-		return &daaBlocksStagingShard{
-			store:                  daas,
-			daaScoreToAdd:          make(map[externalapi.DomainHash]uint64),
-			daaAddedBlocksToAdd:    make(map[externalapi.DomainHash][]*externalapi.DomainHash),
-			daaScoreToDelete:       make(map[externalapi.DomainHash]struct{}),
-			daaAddedBlocksToDelete: make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*daaBlocksStagingShard)
-}
-
-func (daass *daaBlocksStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, daaScore := range daass.daaScoreToAdd {
-		daaScoreBytes := binaryserialization.SerializeUint64(daaScore)
-		err := dbTx.Put(daass.store.daaScoreHashAsKey(&hash), daaScoreBytes)
-		if err != nil {
-			return err
-		}
-		daass.store.daaScoreLRUCache.Add(&hash, daaScore)
-	}
-
-	for hash, addedBlocks := range daass.daaAddedBlocksToAdd {
-		addedBlocksBytes := binaryserialization.SerializeHashes(addedBlocks)
-		err := dbTx.Put(daass.store.daaAddedBlocksHashAsKey(&hash), addedBlocksBytes)
-		if err != nil {
-			return err
-		}
-		daass.store.daaAddedBlocksLRUCache.Add(&hash, addedBlocks)
-	}
-
-	for hash := range daass.daaScoreToDelete {
-		err := dbTx.Delete(daass.store.daaScoreHashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		daass.store.daaScoreLRUCache.Remove(&hash)
-	}
-
-	for hash := range daass.daaAddedBlocksToDelete {
-		err := dbTx.Delete(daass.store.daaAddedBlocksHashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		daass.store.daaAddedBlocksLRUCache.Remove(&hash)
-	}
-
-	return nil
-}
-
-func (daass *daaBlocksStagingShard) isStaged() bool {
-	return len(daass.daaScoreToAdd) != 0 ||
-		len(daass.daaAddedBlocksToAdd) != 0 ||
-		len(daass.daaScoreToDelete) != 0 ||
-		len(daass.daaAddedBlocksToDelete) != 0
-}

domain/consensus/datastructures/daablocksstore/daa_blocks_store.go

@@ -1,114 +0,0 @@
-package daablocksstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/database"
-	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/lrucache"
-)
-
-var daaScoreBucket = database.MakeBucket([]byte("daa-score"))
-var daaAddedBlocksBucket = database.MakeBucket([]byte("daa-added-blocks"))
-
-// daaBlocksStore represents a store of DAABlocksStore
-type daaBlocksStore struct {
-	daaScoreLRUCache       *lrucache.LRUCache
-	daaAddedBlocksLRUCache *lrucache.LRUCache
-}
-
-// New instantiates a new DAABlocksStore
-func New(daaScoreCacheSize int, daaAddedBlocksCacheSize int, preallocate bool) model.DAABlocksStore {
-	return &daaBlocksStore{
-		daaScoreLRUCache:       lrucache.New(daaScoreCacheSize, preallocate),
-		daaAddedBlocksLRUCache: lrucache.New(daaAddedBlocksCacheSize, preallocate),
-	}
-}
-
-func (daas *daaBlocksStore) StageDAAScore(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, daaScore uint64) {
-	stagingShard := daas.stagingShard(stagingArea)
-
-	stagingShard.daaScoreToAdd[*blockHash] = daaScore
-}
-
-func (daas *daaBlocksStore) StageBlockDAAAddedBlocks(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, addedBlocks []*externalapi.DomainHash) {
-	stagingShard := daas.stagingShard(stagingArea)
-
-	stagingShard.daaAddedBlocksToAdd[*blockHash] = externalapi.CloneHashes(addedBlocks)
-}
-
-func (daas *daaBlocksStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return daas.stagingShard(stagingArea).isStaged()
-}
-
-func (daas *daaBlocksStore) DAAScore(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (uint64, error) {
-	stagingShard := daas.stagingShard(stagingArea)
-
-	if daaScore, ok := stagingShard.daaScoreToAdd[*blockHash]; ok {
-		return daaScore, nil
-	}
-
-	if daaScore, ok := daas.daaScoreLRUCache.Get(blockHash); ok {
-		return daaScore.(uint64), nil
-	}
-
-	daaScoreBytes, err := dbContext.Get(daas.daaScoreHashAsKey(blockHash))
-	if err != nil {
-		return 0, err
-	}
-
-	daaScore, err := binaryserialization.DeserializeUint64(daaScoreBytes)
-	if err != nil {
-		return 0, err
-	}
-	daas.daaScoreLRUCache.Add(blockHash, daaScore)
-	return daaScore, nil
-}
-
-func (daas *daaBlocksStore) DAAAddedBlocks(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
-	stagingShard := daas.stagingShard(stagingArea)
-
-	if addedBlocks, ok := stagingShard.daaAddedBlocksToAdd[*blockHash]; ok {
-		return externalapi.CloneHashes(addedBlocks), nil
-	}
-
-	if addedBlocks, ok := daas.daaAddedBlocksLRUCache.Get(blockHash); ok {
-		return externalapi.CloneHashes(addedBlocks.([]*externalapi.DomainHash)), nil
-	}
-
-	addedBlocksBytes, err := dbContext.Get(daas.daaAddedBlocksHashAsKey(blockHash))
-	if err != nil {
-		return nil, err
-	}
-
-	addedBlocks, err := binaryserialization.DeserializeHashes(addedBlocksBytes)
-	if err != nil {
-		return nil, err
-	}
-	daas.daaAddedBlocksLRUCache.Add(blockHash, addedBlocks)
-	return externalapi.CloneHashes(addedBlocks), nil
-}
-
-func (daas *daaBlocksStore) daaScoreHashAsKey(hash *externalapi.DomainHash) model.DBKey {
-	return daaScoreBucket.Key(hash.ByteSlice())
-}
-
-func (daas *daaBlocksStore) daaAddedBlocksHashAsKey(hash *externalapi.DomainHash) model.DBKey {
-	return daaAddedBlocksBucket.Key(hash.ByteSlice())
-}
-
-func (daas *daaBlocksStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := daas.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.daaScoreToAdd[*blockHash]; ok {
-		delete(stagingShard.daaScoreToAdd, *blockHash)
-	} else {
-		stagingShard.daaAddedBlocksToDelete[*blockHash] = struct{}{}
-	}
-
-	if _, ok := stagingShard.daaAddedBlocksToAdd[*blockHash]; ok {
-		delete(stagingShard.daaAddedBlocksToAdd, *blockHash)
-	} else {
-		stagingShard.daaAddedBlocksToDelete[*blockHash] = struct{}{}
-	}
-}

domain/consensus/datastructures/finalitystore/finality_staging_shard.go

@@ -1,36 +0,0 @@
-package finalitystore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type finalityStagingShard struct {
-	store *finalityStore
-	toAdd map[externalapi.DomainHash]*externalapi.DomainHash
-}
-
-func (fs *finalityStore) stagingShard(stagingArea *model.StagingArea) *finalityStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDFinality, func() model.StagingShard {
-		return &finalityStagingShard{
-			store: fs,
-			toAdd: make(map[externalapi.DomainHash]*externalapi.DomainHash),
-		}
-	}).(*finalityStagingShard)
-}
-
-func (fss *finalityStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, finalityPointHash := range fss.toAdd {
-		err := dbTx.Put(fss.store.hashAsKey(&hash), finalityPointHash.ByteSlice())
-		if err != nil {
-			return err
-		}
-		fss.store.cache.Add(&hash, finalityPointHash)
-	}
-
-	return nil
-}
-
-func (fss *finalityStagingShard) isStaged() bool {
-	return len(fss.toAdd) == 0
-}

domain/consensus/datastructures/finalitystore/finality_store.go

@@ -10,26 +10,27 @@ import (
 var bucket = database.MakeBucket([]byte("finality-points"))
 
 type finalityStore struct {
-	cache *lrucache.LRUCache
+	staging  map[externalapi.DomainHash]*externalapi.DomainHash
+	toDelete map[externalapi.DomainHash]struct{}
+	cache    *lrucache.LRUCache
 }
 
 // New instantiates a new FinalityStore
 func New(cacheSize int, preallocate bool) model.FinalityStore {
 	return &finalityStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging:  make(map[externalapi.DomainHash]*externalapi.DomainHash),
+		toDelete: make(map[externalapi.DomainHash]struct{}),
+		cache:    lrucache.New(cacheSize, preallocate),
 	}
 }
 
-func (fs *finalityStore) StageFinalityPoint(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash) {
-	stagingShard := fs.stagingShard(stagingArea)
-
-	stagingShard.toAdd[*blockHash] = finalityPointHash
+func (fs *finalityStore) StageFinalityPoint(blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash) {
+	fs.staging[*blockHash] = finalityPointHash
 }
 
-func (fs *finalityStore) FinalityPoint(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
-	stagingShard := fs.stagingShard(stagingArea)
-
-	if finalityPointHash, ok := stagingShard.toAdd[*blockHash]; ok {
+func (fs *finalityStore) FinalityPoint(
+	dbContext model.DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
+	if finalityPointHash, ok := fs.staging[*blockHash]; ok {
 		return finalityPointHash, nil
 	}
 
@@ -50,8 +51,25 @@ func (fs *finalityStore) FinalityPoint(dbContext model.DBReader, stagingArea *mo
 	return finalityPointHash, nil
 }
 
-func (fs *finalityStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return fs.stagingShard(stagingArea).isStaged()
+func (fs *finalityStore) Discard() {
+	fs.staging = make(map[externalapi.DomainHash]*externalapi.DomainHash)
+}
+
+func (fs *finalityStore) Commit(dbTx model.DBTransaction) error {
+	for hash, finalityPointHash := range fs.staging {
+		err := dbTx.Put(fs.hashAsKey(&hash), finalityPointHash.ByteSlice())
+		if err != nil {
+			return err
+		}
+		fs.cache.Add(&hash, finalityPointHash)
+	}
+
+	fs.Discard()
+	return nil
+}
+
+func (fs *finalityStore) IsStaged() bool {
+	return len(fs.staging) == 0
 }
 
 func (fs *finalityStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {

domain/consensus/datastructures/ghostdagdatastore/ghostadag_data_staging_shard.go

@@ -1,40 +0,0 @@
-package ghostdagdatastore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type ghostdagDataStagingShard struct {
-	store *ghostdagDataStore
-	toAdd map[externalapi.DomainHash]*model.BlockGHOSTDAGData
-}
-
-func (gds *ghostdagDataStore) stagingShard(stagingArea *model.StagingArea) *ghostdagDataStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDGHOSTDAG, func() model.StagingShard {
-		return &ghostdagDataStagingShard{
-			store: gds,
-			toAdd: make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData),
-		}
-	}).(*ghostdagDataStagingShard)
-}
-
-func (gdss *ghostdagDataStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, blockGHOSTDAGData := range gdss.toAdd {
-		blockGhostdagDataBytes, err := gdss.store.serializeBlockGHOSTDAGData(blockGHOSTDAGData)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(gdss.store.hashAsKey(&hash), blockGhostdagDataBytes)
-		if err != nil {
-			return err
-		}
-		gdss.store.cache.Add(&hash, blockGHOSTDAGData)
-	}
-
-	return nil
-}
-
-func (gdss *ghostdagDataStagingShard) isStaged() bool {
-	return len(gdss.toAdd) != 0
-}

domain/consensus/datastructures/ghostdagdatastore/ghostdagdatastore.go

@@ -13,32 +13,51 @@ var bucket = database.MakeBucket([]byte("block-ghostdag-data"))
 
 // ghostdagDataStore represents a store of BlockGHOSTDAGData
 type ghostdagDataStore struct {
-	cache *lrucache.LRUCache
+	staging map[externalapi.DomainHash]*model.BlockGHOSTDAGData
+	cache   *lrucache.LRUCache
 }
 
 // New instantiates a new GHOSTDAGDataStore
 func New(cacheSize int, preallocate bool) model.GHOSTDAGDataStore {
 	return &ghostdagDataStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging: make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData),
+		cache:   lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given blockGHOSTDAGData for the given blockHash
-func (gds *ghostdagDataStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockGHOSTDAGData *model.BlockGHOSTDAGData) {
-	stagingShard := gds.stagingShard(stagingArea)
-
-	stagingShard.toAdd[*blockHash] = blockGHOSTDAGData
+func (gds *ghostdagDataStore) Stage(blockHash *externalapi.DomainHash, blockGHOSTDAGData *model.BlockGHOSTDAGData) {
+	gds.staging[*blockHash] = blockGHOSTDAGData
 }
 
-func (gds *ghostdagDataStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return gds.stagingShard(stagingArea).isStaged()
+func (gds *ghostdagDataStore) IsStaged() bool {
+	return len(gds.staging) != 0
+}
+
+func (gds *ghostdagDataStore) Discard() {
+	gds.staging = make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData)
+}
+
+func (gds *ghostdagDataStore) Commit(dbTx model.DBTransaction) error {
+	for hash, blockGHOSTDAGData := range gds.staging {
+		blockGhostdagDataBytes, err := gds.serializeBlockGHOSTDAGData(blockGHOSTDAGData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(gds.hashAsKey(&hash), blockGhostdagDataBytes)
+		if err != nil {
+			return err
+		}
+		gds.cache.Add(&hash, blockGHOSTDAGData)
+	}
+
+	gds.Discard()
+	return nil
 }
 
 // Get gets the blockGHOSTDAGData associated with the given blockHash
-func (gds *ghostdagDataStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*model.BlockGHOSTDAGData, error) {
-	stagingShard := gds.stagingShard(stagingArea)
-
-	if blockGHOSTDAGData, ok := stagingShard.toAdd[*blockHash]; ok {
+func (gds *ghostdagDataStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*model.BlockGHOSTDAGData, error) {
+	if blockGHOSTDAGData, ok := gds.staging[*blockHash]; ok {
 		return blockGHOSTDAGData, nil
 	}
 

domain/consensus/datastructures/headersselectedchainstore/headers_selected_chain_staging_shard.go

@@ -1,87 +0,0 @@
-package headersselectedchainstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type headersSelectedChainStagingShard struct {
-	store          *headersSelectedChainStore
-	addedByHash    map[externalapi.DomainHash]uint64
-	removedByHash  map[externalapi.DomainHash]struct{}
-	addedByIndex   map[uint64]*externalapi.DomainHash
-	removedByIndex map[uint64]struct{}
-}
-
-func (hscs *headersSelectedChainStore) stagingShard(stagingArea *model.StagingArea) *headersSelectedChainStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDHeadersSelectedChain, func() model.StagingShard {
-		return &headersSelectedChainStagingShard{
-			store:          hscs,
-			addedByHash:    make(map[externalapi.DomainHash]uint64),
-			removedByHash:  make(map[externalapi.DomainHash]struct{}),
-			addedByIndex:   make(map[uint64]*externalapi.DomainHash),
-			removedByIndex: make(map[uint64]struct{}),
-		}
-	}).(*headersSelectedChainStagingShard)
-}
-
-func (hscss *headersSelectedChainStagingShard) Commit(dbTx model.DBTransaction) error {
-	if !hscss.isStaged() {
-		return nil
-	}
-
-	for hash := range hscss.removedByHash {
-		hashCopy := hash
-		err := dbTx.Delete(hscss.store.hashAsKey(&hashCopy))
-		if err != nil {
-			return err
-		}
-		hscss.store.cacheByHash.Remove(&hashCopy)
-	}
-
-	for index := range hscss.removedByIndex {
-		err := dbTx.Delete(hscss.store.indexAsKey(index))
-		if err != nil {
-			return err
-		}
-		hscss.store.cacheByIndex.Remove(index)
-	}
-
-	highestIndex := uint64(0)
-	for hash, index := range hscss.addedByHash {
-		hashCopy := hash
-		err := dbTx.Put(hscss.store.hashAsKey(&hashCopy), hscss.store.serializeIndex(index))
-		if err != nil {
-			return err
-		}
-
-		err = dbTx.Put(hscss.store.indexAsKey(index), binaryserialization.SerializeHash(&hashCopy))
-		if err != nil {
-			return err
-		}
-
-		hscss.store.cacheByHash.Add(&hashCopy, index)
-		hscss.store.cacheByIndex.Add(index, &hashCopy)
-
-		if index > highestIndex {
-			highestIndex = index
-		}
-	}
-
-	err := dbTx.Put(highestChainBlockIndexKey, hscss.store.serializeIndex(highestIndex))
-	if err != nil {
-		return err
-	}
-
-	hscss.store.cacheHighestChainBlockIndex = highestIndex
-
-	return nil
-}
-
-func (hscss *headersSelectedChainStagingShard) isStaged() bool {
-	return len(hscss.addedByHash) != 0 ||
-		len(hscss.removedByHash) != 0 ||
-		len(hscss.addedByIndex) != 0 ||
-		len(hscss.addedByIndex) != 0
-}

domain/consensus/datastructures/headersselectedchainstore/headersselectedchainstore.go

@@ -2,7 +2,6 @@ package headersselectedchainstore
 
 import (
 	"encoding/binary"
-
 	"github.com/kaspanet/kaspad/domain/consensus/database"
 	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
@@ -17,6 +16,10 @@ var bucketChainBlockIndexByHash = database.MakeBucket([]byte("chain-block-index-
 var highestChainBlockIndexKey = database.MakeBucket(nil).Key([]byte("highest-chain-block-index"))
 
 type headersSelectedChainStore struct {
+	stagingAddedByHash          map[externalapi.DomainHash]uint64
+	stagingRemovedByHash        map[externalapi.DomainHash]struct{}
+	stagingAddedByIndex         map[uint64]*externalapi.DomainHash
+	stagingRemovedByIndex       map[uint64]struct{}
 	cacheByIndex                *lrucacheuint64tohash.LRUCache
 	cacheByHash                 *lrucache.LRUCache
 	cacheHighestChainBlockIndex uint64
@@ -25,27 +28,31 @@ type headersSelectedChainStore struct {
 // New instantiates a new HeadersSelectedChainStore
 func New(cacheSize int, preallocate bool) model.HeadersSelectedChainStore {
 	return &headersSelectedChainStore{
-		cacheByIndex: lrucacheuint64tohash.New(cacheSize, preallocate),
-		cacheByHash:  lrucache.New(cacheSize, preallocate),
+		stagingAddedByHash:    make(map[externalapi.DomainHash]uint64),
+		stagingRemovedByHash:  make(map[externalapi.DomainHash]struct{}),
+		stagingAddedByIndex:   make(map[uint64]*externalapi.DomainHash),
+		stagingRemovedByIndex: make(map[uint64]struct{}),
+		cacheByIndex:          lrucacheuint64tohash.New(cacheSize, preallocate),
+		cacheByHash:           lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given chain changes
-func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader, stagingArea *model.StagingArea, chainChanges *externalapi.SelectedChainPath) error {
-	stagingShard := hscs.stagingShard(stagingArea)
+func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader,
+	chainChanges *externalapi.SelectedChainPath) error {
 
-	if hscs.IsStaged(stagingArea) {
+	if hscs.IsStaged() {
 		return errors.Errorf("can't stage when there's already staged data")
 	}
 
 	for _, blockHash := range chainChanges.Removed {
-		index, err := hscs.GetIndexByHash(dbContext, stagingArea, blockHash)
+		index, err := hscs.GetIndexByHash(dbContext, blockHash)
 		if err != nil {
 			return err
 		}
 
-		stagingShard.removedByIndex[index] = struct{}{}
-		stagingShard.removedByHash[*blockHash] = struct{}{}
+		hscs.stagingRemovedByIndex[index] = struct{}{}
+		hscs.stagingRemovedByHash[*blockHash] = struct{}{}
 	}
 
 	currentIndex := uint64(0)
@@ -59,27 +66,89 @@ func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader, stagingAr
 	}
 
 	for _, blockHash := range chainChanges.Added {
-		stagingShard.addedByIndex[currentIndex] = blockHash
-		stagingShard.addedByHash[*blockHash] = currentIndex
+		hscs.stagingAddedByIndex[currentIndex] = blockHash
+		hscs.stagingAddedByHash[*blockHash] = currentIndex
 		currentIndex++
 	}
 
 	return nil
 }
 
-func (hscs *headersSelectedChainStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return hscs.stagingShard(stagingArea).isStaged()
+func (hscs *headersSelectedChainStore) IsStaged() bool {
+	return len(hscs.stagingAddedByHash) != 0 ||
+		len(hscs.stagingRemovedByHash) != 0 ||
+		len(hscs.stagingAddedByIndex) != 0 ||
+		len(hscs.stagingAddedByIndex) != 0
+}
+
+func (hscs *headersSelectedChainStore) Discard() {
+	hscs.stagingAddedByHash = make(map[externalapi.DomainHash]uint64)
+	hscs.stagingRemovedByHash = make(map[externalapi.DomainHash]struct{})
+	hscs.stagingAddedByIndex = make(map[uint64]*externalapi.DomainHash)
+	hscs.stagingRemovedByIndex = make(map[uint64]struct{})
+}
+
+func (hscs *headersSelectedChainStore) Commit(dbTx model.DBTransaction) error {
+	if !hscs.IsStaged() {
+		return nil
+	}
+
+	for hash := range hscs.stagingRemovedByHash {
+		hashCopy := hash
+		err := dbTx.Delete(hscs.hashAsKey(&hashCopy))
+		if err != nil {
+			return err
+		}
+		hscs.cacheByHash.Remove(&hashCopy)
+	}
+
+	for index := range hscs.stagingRemovedByIndex {
+		err := dbTx.Delete(hscs.indexAsKey(index))
+		if err != nil {
+			return err
+		}
+		hscs.cacheByIndex.Remove(index)
+	}
+
+	highestIndex := uint64(0)
+	for hash, index := range hscs.stagingAddedByHash {
+		hashCopy := hash
+		err := dbTx.Put(hscs.hashAsKey(&hashCopy), hscs.serializeIndex(index))
+		if err != nil {
+			return err
+		}
+
+		err = dbTx.Put(hscs.indexAsKey(index), binaryserialization.SerializeHash(&hashCopy))
+		if err != nil {
+			return err
+		}
+
+		hscs.cacheByHash.Add(&hashCopy, index)
+		hscs.cacheByIndex.Add(index, &hashCopy)
+
+		if index > highestIndex {
+			highestIndex = index
+		}
+	}
+
+	err := dbTx.Put(highestChainBlockIndexKey, hscs.serializeIndex(highestIndex))
+	if err != nil {
+		return err
+	}
+
+	hscs.cacheHighestChainBlockIndex = highestIndex
+
+	hscs.Discard()
+	return nil
 }
 
 // Get gets the chain block index for the given blockHash
-func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (uint64, error) {
-	stagingShard := hscs.stagingShard(stagingArea)
-
-	if index, ok := stagingShard.addedByHash[*blockHash]; ok {
+func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader, blockHash *externalapi.DomainHash) (uint64, error) {
+	if index, ok := hscs.stagingAddedByHash[*blockHash]; ok {
 		return index, nil
 	}
 
-	if _, ok := stagingShard.removedByHash[*blockHash]; ok {
+	if _, ok := hscs.stagingRemovedByHash[*blockHash]; ok {
 		return 0, errors.Wrapf(database.ErrNotFound, "couldn't find block %s", blockHash)
 	}
 
@@ -92,23 +161,17 @@ func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader,
 		return 0, err
 	}
 
-	index, err := hscs.deserializeIndex(indexBytes)
-	if err != nil {
-		return 0, err
-	}
-
+	index := hscs.deserializeIndex(indexBytes)
 	hscs.cacheByHash.Add(blockHash, index)
 	return index, nil
 }
 
-func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader, stagingArea *model.StagingArea, index uint64) (*externalapi.DomainHash, error) {
-	stagingShard := hscs.stagingShard(stagingArea)
-
-	if blockHash, ok := stagingShard.addedByIndex[index]; ok {
+func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader, index uint64) (*externalapi.DomainHash, error) {
+	if blockHash, ok := hscs.stagingAddedByIndex[index]; ok {
 		return blockHash, nil
 	}
 
-	if _, ok := stagingShard.removedByIndex[index]; ok {
+	if _, ok := hscs.stagingRemovedByIndex[index]; ok {
 		return nil, errors.Wrapf(database.ErrNotFound, "couldn't find chain block with index %d", index)
 	}
 
@@ -130,11 +193,11 @@ func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader,
 }
 
 func (hscs *headersSelectedChainStore) serializeIndex(index uint64) []byte {
-	return binaryserialization.SerializeUint64(index)
+	return binaryserialization.SerializeChainBlockIndex(index)
 }
 
-func (hscs *headersSelectedChainStore) deserializeIndex(indexBytes []byte) (uint64, error) {
-	return binaryserialization.DeserializeUint64(indexBytes)
+func (hscs *headersSelectedChainStore) deserializeIndex(indexBytes []byte) uint64 {
+	return binaryserialization.DeserializeChainBlockIndex(indexBytes)
 }
 
 func (hscs *headersSelectedChainStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
@@ -160,11 +223,7 @@ func (hscs *headersSelectedChainStore) highestChainBlockIndex(dbContext model.DB
 		return 0, false, err
 	}
 
-	index, err := hscs.deserializeIndex(indexBytes)
-	if err != nil {
-		return 0, false, err
-	}
-
+	index := hscs.deserializeIndex(indexBytes)
 	hscs.cacheHighestChainBlockIndex = index
 	return index, true, nil
 }

domain/consensus/datastructures/headersselectedtipstore/headers_selected_tip_staging_shard.go

@@ -1,42 +0,0 @@
-package headersselectedtipstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type headersSelectedTipStagingShard struct {
-	store          *headerSelectedTipStore
-	newSelectedTip *externalapi.DomainHash
-}
-
-func (hsts *headerSelectedTipStore) stagingShard(stagingArea *model.StagingArea) *headersSelectedTipStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDHeadersSelectedTip, func() model.StagingShard {
-		return &headersSelectedTipStagingShard{
-			store:          hsts,
-			newSelectedTip: nil,
-		}
-	}).(*headersSelectedTipStagingShard)
-}
-
-func (hstss *headersSelectedTipStagingShard) Commit(dbTx model.DBTransaction) error {
-	if hstss.newSelectedTip == nil {
-		return nil
-	}
-
-	selectedTipBytes, err := hstss.store.serializeHeadersSelectedTip(hstss.newSelectedTip)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(headerSelectedTipKey, selectedTipBytes)
-	if err != nil {
-		return err
-	}
-	hstss.store.cache = hstss.newSelectedTip
-
-	return nil
-}
-
-func (hstss *headersSelectedTipStagingShard) isStaged() bool {
-	return hstss.newSelectedTip != nil
-}

domain/consensus/datastructures/headersselectedtipstore/headers_selected_tips_store.go

@@ -1,83 +0,0 @@
-package headersselectedtipstore
-
-import (
-	"github.com/golang/protobuf/proto"
-	"github.com/kaspanet/kaspad/domain/consensus/database"
-	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-var headerSelectedTipKey = database.MakeBucket(nil).Key([]byte("headers-selected-tip"))
-
-type headerSelectedTipStore struct {
-	cache *externalapi.DomainHash
-}
-
-// New instantiates a new HeaderSelectedTipStore
-func New() model.HeaderSelectedTipStore {
-	return &headerSelectedTipStore{}
-}
-
-func (hsts *headerSelectedTipStore) Has(dbContext model.DBReader, stagingArea *model.StagingArea) (bool, error) {
-	stagingShard := hsts.stagingShard(stagingArea)
-
-	if stagingShard.newSelectedTip != nil {
-		return true, nil
-	}
-
-	if hsts.cache != nil {
-		return true, nil
-	}
-
-	return dbContext.Has(headerSelectedTipKey)
-}
-
-func (hsts *headerSelectedTipStore) Stage(stagingArea *model.StagingArea, selectedTip *externalapi.DomainHash) {
-	stagingShard := hsts.stagingShard(stagingArea)
-	stagingShard.newSelectedTip = selectedTip
-}
-
-func (hsts *headerSelectedTipStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return hsts.stagingShard(stagingArea).isStaged()
-}
-
-func (hsts *headerSelectedTipStore) HeadersSelectedTip(dbContext model.DBReader, stagingArea *model.StagingArea) (
-	*externalapi.DomainHash, error) {
-
-	stagingShard := hsts.stagingShard(stagingArea)
-
-	if stagingShard.newSelectedTip != nil {
-		return stagingShard.newSelectedTip, nil
-	}
-
-	if hsts.cache != nil {
-		return hsts.cache, nil
-	}
-
-	selectedTipBytes, err := dbContext.Get(headerSelectedTipKey)
-	if err != nil {
-		return nil, err
-	}
-
-	selectedTip, err := hsts.deserializeHeadersSelectedTip(selectedTipBytes)
-	if err != nil {
-		return nil, err
-	}
-	hsts.cache = selectedTip
-	return hsts.cache, nil
-}
-
-func (hsts *headerSelectedTipStore) serializeHeadersSelectedTip(selectedTip *externalapi.DomainHash) ([]byte, error) {
-	return proto.Marshal(serialization.DomainHashToDbHash(selectedTip))
-}
-
-func (hsts *headerSelectedTipStore) deserializeHeadersSelectedTip(selectedTipBytes []byte) (*externalapi.DomainHash, error) {
-	dbHash := &serialization.DbHash{}
-	err := proto.Unmarshal(selectedTipBytes, dbHash)
-	if err != nil {
-		return nil, err
-	}
-
-	return serialization.DbHashToDomainHash(dbHash)
-}

domain/consensus/datastructures/headersselectedtipstore/headertipsstore.go

@@ -0,0 +1,100 @@
+package headersselectedtipstore
+
+import (
+	"github.com/golang/protobuf/proto"
+	"github.com/kaspanet/kaspad/domain/consensus/database"
+	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+var headerSelectedTipKey = database.MakeBucket(nil).Key([]byte("headers-selected-tip"))
+
+type headerSelectedTipStore struct {
+	staging *externalapi.DomainHash
+	cache   *externalapi.DomainHash
+}
+
+// New instantiates a new HeaderSelectedTipStore
+func New() model.HeaderSelectedTipStore {
+	return &headerSelectedTipStore{}
+}
+
+func (hts *headerSelectedTipStore) Has(dbContext model.DBReader) (bool, error) {
+	if hts.staging != nil {
+		return true, nil
+	}
+
+	if hts.cache != nil {
+		return true, nil
+	}
+
+	return dbContext.Has(headerSelectedTipKey)
+}
+
+func (hts *headerSelectedTipStore) Discard() {
+	hts.staging = nil
+}
+
+func (hts *headerSelectedTipStore) Commit(dbTx model.DBTransaction) error {
+	if hts.staging == nil {
+		return nil
+	}
+
+	selectedTipBytes, err := hts.serializeHeadersSelectedTip(hts.staging)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(headerSelectedTipKey, selectedTipBytes)
+	if err != nil {
+		return err
+	}
+	hts.cache = hts.staging
+
+	hts.Discard()
+	return nil
+}
+
+func (hts *headerSelectedTipStore) Stage(selectedTip *externalapi.DomainHash) {
+	hts.staging = selectedTip
+}
+
+func (hts *headerSelectedTipStore) IsStaged() bool {
+	return hts.staging != nil
+}
+
+func (hts *headerSelectedTipStore) HeadersSelectedTip(dbContext model.DBReader) (*externalapi.DomainHash, error) {
+	if hts.staging != nil {
+		return hts.staging, nil
+	}
+
+	if hts.cache != nil {
+		return hts.cache, nil
+	}
+
+	selectedTipBytes, err := dbContext.Get(headerSelectedTipKey)
+	if err != nil {
+		return nil, err
+	}
+
+	selectedTip, err := hts.deserializeHeadersSelectedTip(selectedTipBytes)
+	if err != nil {
+		return nil, err
+	}
+	hts.cache = selectedTip
+	return hts.cache, nil
+}
+
+func (hts *headerSelectedTipStore) serializeHeadersSelectedTip(selectedTip *externalapi.DomainHash) ([]byte, error) {
+	return proto.Marshal(serialization.DomainHashToDbHash(selectedTip))
+}
+
+func (hts *headerSelectedTipStore) deserializeHeadersSelectedTip(selectedTipBytes []byte) (*externalapi.DomainHash, error) {
+	dbHash := &serialization.DbHash{}
+	err := proto.Unmarshal(selectedTipBytes, dbHash)
+	if err != nil {
+		return nil, err
+	}
+
+	return serialization.DbHashToDomainHash(dbHash)
+}

domain/consensus/datastructures/multisetstore/multiset_staging_shard.go

@@ -1,50 +0,0 @@
-package multisetstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type multisetStagingShard struct {
-	store    *multisetStore
-	toAdd    map[externalapi.DomainHash]model.Multiset
-	toDelete map[externalapi.DomainHash]struct{}
-}
-
-func (ms *multisetStore) stagingShard(stagingArea *model.StagingArea) *multisetStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDMultiset, func() model.StagingShard {
-		return &multisetStagingShard{
-			store:    ms,
-			toAdd:    make(map[externalapi.DomainHash]model.Multiset),
-			toDelete: make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*multisetStagingShard)
-}
-
-func (mss *multisetStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, multiset := range mss.toAdd {
-		multisetBytes, err := mss.store.serializeMultiset(multiset)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(mss.store.hashAsKey(&hash), multisetBytes)
-		if err != nil {
-			return err
-		}
-		mss.store.cache.Add(&hash, multiset)
-	}
-
-	for hash := range mss.toDelete {
-		err := dbTx.Delete(mss.store.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		mss.store.cache.Remove(&hash)
-	}
-
-	return nil
-}
-
-func (mss *multisetStagingShard) isStaged() bool {
-	return len(mss.toAdd) != 0 || len(mss.toDelete) != 0
-}

domain/consensus/datastructures/multisetstore/multisetstore.go

@@ -13,32 +13,62 @@ var bucket = database.MakeBucket([]byte("multisets"))
 
 // multisetStore represents a store of Multisets
 type multisetStore struct {
-	cache *lrucache.LRUCache
+	staging  map[externalapi.DomainHash]model.Multiset
+	toDelete map[externalapi.DomainHash]struct{}
+	cache    *lrucache.LRUCache
 }
 
 // New instantiates a new MultisetStore
 func New(cacheSize int, preallocate bool) model.MultisetStore {
 	return &multisetStore{
-		cache: lrucache.New(cacheSize, preallocate),
+		staging:  make(map[externalapi.DomainHash]model.Multiset),
+		toDelete: make(map[externalapi.DomainHash]struct{}),
+		cache:    lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given multiset for the given blockHash
-func (ms *multisetStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, multiset model.Multiset) {
-	stagingShard := ms.stagingShard(stagingArea)
-
-	stagingShard.toAdd[*blockHash] = multiset.Clone()
+func (ms *multisetStore) Stage(blockHash *externalapi.DomainHash, multiset model.Multiset) {
+	ms.staging[*blockHash] = multiset.Clone()
 }
 
-func (ms *multisetStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return ms.stagingShard(stagingArea).isStaged()
+func (ms *multisetStore) IsStaged() bool {
+	return len(ms.staging) != 0 || len(ms.toDelete) != 0
+}
+
+func (ms *multisetStore) Discard() {
+	ms.staging = make(map[externalapi.DomainHash]model.Multiset)
+	ms.toDelete = make(map[externalapi.DomainHash]struct{})
+}
+
+func (ms *multisetStore) Commit(dbTx model.DBTransaction) error {
+	for hash, multiset := range ms.staging {
+		multisetBytes, err := ms.serializeMultiset(multiset)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(ms.hashAsKey(&hash), multisetBytes)
+		if err != nil {
+			return err
+		}
+		ms.cache.Add(&hash, multiset)
+	}
+
+	for hash := range ms.toDelete {
+		err := dbTx.Delete(ms.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		ms.cache.Remove(&hash)
+	}
+
+	ms.Discard()
+	return nil
 }
 
 // Get gets the multiset associated with the given blockHash
-func (ms *multisetStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (model.Multiset, error) {
-	stagingShard := ms.stagingShard(stagingArea)
-
-	if multiset, ok := stagingShard.toAdd[*blockHash]; ok {
+func (ms *multisetStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (model.Multiset, error) {
+	if multiset, ok := ms.staging[*blockHash]; ok {
 		return multiset.Clone(), nil
 	}
 
@@ -60,14 +90,12 @@ func (ms *multisetStore) Get(dbContext model.DBReader, stagingArea *model.Stagin
 }
 
 // Delete deletes the multiset associated with the given blockHash
-func (ms *multisetStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := ms.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.toAdd[*blockHash]; ok {
-		delete(stagingShard.toAdd, *blockHash)
+func (ms *multisetStore) Delete(blockHash *externalapi.DomainHash) {
+	if _, ok := ms.staging[*blockHash]; ok {
+		delete(ms.staging, *blockHash)
 		return
 	}
-	stagingShard.toDelete[*blockHash] = struct{}{}
+	ms.toDelete[*blockHash] = struct{}{}
 }
 
 func (ms *multisetStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {

domain/consensus/datastructures/pruningstore/pruning_staging_shard.go

@@ -1,64 +0,0 @@
-package pruningstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type pruningStagingShard struct {
-	store *pruningStore
-
-	newPruningPoint                  *externalapi.DomainHash
-	newPruningPointCandidate         *externalapi.DomainHash
-	startUpdatingPruningPointUTXOSet bool
-}
-
-func (ps *pruningStore) stagingShard(stagingArea *model.StagingArea) *pruningStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDPruning, func() model.StagingShard {
-		return &pruningStagingShard{
-			store:                            ps,
-			newPruningPoint:                  nil,
-			newPruningPointCandidate:         nil,
-			startUpdatingPruningPointUTXOSet: false,
-		}
-	}).(*pruningStagingShard)
-}
-
-func (mss *pruningStagingShard) Commit(dbTx model.DBTransaction) error {
-	if mss.newPruningPoint != nil {
-		pruningPointBytes, err := mss.store.serializeHash(mss.newPruningPoint)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(pruningBlockHashKey, pruningPointBytes)
-		if err != nil {
-			return err
-		}
-		mss.store.pruningPointCache = mss.newPruningPoint
-	}
-
-	if mss.newPruningPointCandidate != nil {
-		candidateBytes, err := mss.store.serializeHash(mss.newPruningPointCandidate)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(candidatePruningPointHashKey, candidateBytes)
-		if err != nil {
-			return err
-		}
-		mss.store.pruningPointCandidateCache = mss.newPruningPointCandidate
-	}
-
-	if mss.startUpdatingPruningPointUTXOSet {
-		err := dbTx.Put(updatingPruningPointUTXOSetKey, []byte{0})
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (mss *pruningStagingShard) isStaged() bool {
-	return mss.newPruningPoint != nil || mss.startUpdatingPruningPointUTXOSet
-}

domain/consensus/datastructures/pruningstore/pruningstore.go

@@ -15,8 +15,12 @@ var updatingPruningPointUTXOSetKey = database.MakeBucket(nil).Key([]byte("updati
 
 // pruningStore represents a store for the current pruning state
 type pruningStore struct {
-	pruningPointCache          *externalapi.DomainHash
-	pruningPointCandidateCache *externalapi.DomainHash
+	pruningPointStaging          *externalapi.DomainHash
+	pruningPointCache            *externalapi.DomainHash
+	pruningPointCandidateStaging *externalapi.DomainHash
+	pruningPointCandidateCache   *externalapi.DomainHash
+
+	startUpdatingPruningPointUTXOSetStaging bool
 }
 
 // New instantiates a new PruningStore
@@ -24,17 +28,13 @@ func New() model.PruningStore {
 	return &pruningStore{}
 }
 
-func (ps *pruningStore) StagePruningPointCandidate(stagingArea *model.StagingArea, candidate *externalapi.DomainHash) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	stagingShard.newPruningPointCandidate = candidate
+func (ps *pruningStore) StagePruningPointCandidate(candidate *externalapi.DomainHash) {
+	ps.pruningPointCandidateStaging = candidate
 }
 
-func (ps *pruningStore) PruningPointCandidate(dbContext model.DBReader, stagingArea *model.StagingArea) (*externalapi.DomainHash, error) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	if stagingShard.newPruningPointCandidate != nil {
-		return stagingShard.newPruningPointCandidate, nil
+func (ps *pruningStore) PruningPointCandidate(dbContext model.DBReader) (*externalapi.DomainHash, error) {
+	if ps.pruningPointCandidateStaging != nil {
+		return ps.pruningPointCandidateStaging, nil
 	}
 
 	if ps.pruningPointCandidateCache != nil {
@@ -54,10 +54,8 @@ func (ps *pruningStore) PruningPointCandidate(dbContext model.DBReader, stagingA
 	return candidate, nil
 }
 
-func (ps *pruningStore) HasPruningPointCandidate(dbContext model.DBReader, stagingArea *model.StagingArea) (bool, error) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	if stagingShard.newPruningPointCandidate != nil {
+func (ps *pruningStore) HasPruningPointCandidate(dbContext model.DBReader) (bool, error) {
+	if ps.pruningPointCandidateStaging != nil {
 		return true, nil
 	}
 
@@ -69,14 +67,53 @@ func (ps *pruningStore) HasPruningPointCandidate(dbContext model.DBReader, stagi
 }
 
 // Stage stages the pruning state
-func (ps *pruningStore) StagePruningPoint(stagingArea *model.StagingArea, pruningPointBlockHash *externalapi.DomainHash) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	stagingShard.newPruningPoint = pruningPointBlockHash
+func (ps *pruningStore) StagePruningPoint(pruningPointBlockHash *externalapi.DomainHash) {
+	ps.pruningPointStaging = pruningPointBlockHash
 }
 
-func (ps *pruningStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return ps.stagingShard(stagingArea).isStaged()
+func (ps *pruningStore) IsStaged() bool {
+	return ps.pruningPointStaging != nil || ps.startUpdatingPruningPointUTXOSetStaging
+}
+
+func (ps *pruningStore) Discard() {
+	ps.pruningPointStaging = nil
+	ps.startUpdatingPruningPointUTXOSetStaging = false
+}
+
+func (ps *pruningStore) Commit(dbTx model.DBTransaction) error {
+	if ps.pruningPointStaging != nil {
+		pruningPointBytes, err := ps.serializeHash(ps.pruningPointStaging)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(pruningBlockHashKey, pruningPointBytes)
+		if err != nil {
+			return err
+		}
+		ps.pruningPointCache = ps.pruningPointStaging
+	}
+
+	if ps.pruningPointCandidateStaging != nil {
+		candidateBytes, err := ps.serializeHash(ps.pruningPointCandidateStaging)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(candidatePruningPointHashKey, candidateBytes)
+		if err != nil {
+			return err
+		}
+		ps.pruningPointCandidateCache = ps.pruningPointCandidateStaging
+	}
+
+	if ps.startUpdatingPruningPointUTXOSetStaging {
+		err := dbTx.Put(updatingPruningPointUTXOSetKey, []byte{0})
+		if err != nil {
+			return err
+		}
+	}
+
+	ps.Discard()
+	return nil
 }
 
 func (ps *pruningStore) UpdatePruningPointUTXOSet(dbContext model.DBWriter,
@@ -124,11 +161,9 @@ func (ps *pruningStore) UpdatePruningPointUTXOSet(dbContext model.DBWriter,
 }
 
 // PruningPoint gets the current pruning point
-func (ps *pruningStore) PruningPoint(dbContext model.DBReader, stagingArea *model.StagingArea) (*externalapi.DomainHash, error) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	if stagingShard.newPruningPoint != nil {
-		return stagingShard.newPruningPoint, nil
+func (ps *pruningStore) PruningPoint(dbContext model.DBReader) (*externalapi.DomainHash, error) {
+	if ps.pruningPointStaging != nil {
+		return ps.pruningPointStaging, nil
 	}
 
 	if ps.pruningPointCache != nil {
@@ -162,10 +197,8 @@ func (ps *pruningStore) deserializePruningPoint(pruningPointBytes []byte) (*exte
 	return serialization.DbHashToDomainHash(dbHash)
 }
 
-func (ps *pruningStore) HasPruningPoint(dbContext model.DBReader, stagingArea *model.StagingArea) (bool, error) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	if stagingShard.newPruningPoint != nil {
+func (ps *pruningStore) HasPruningPoint(dbContext model.DBReader) (bool, error) {
+	if ps.pruningPointStaging != nil {
 		return true, nil
 	}
 
@@ -214,10 +247,8 @@ func (ps *pruningStore) PruningPointUTXOs(dbContext model.DBReader,
 	return outpointAndUTXOEntryPairs, nil
 }
 
-func (ps *pruningStore) StageStartUpdatingPruningPointUTXOSet(stagingArea *model.StagingArea) {
-	stagingShard := ps.stagingShard(stagingArea)
-
-	stagingShard.startUpdatingPruningPointUTXOSet = true
+func (ps *pruningStore) StageStartUpdatingPruningPointUTXOSet() {
+	ps.startUpdatingPruningPointUTXOSetStaging = true
 }
 
 func (ps *pruningStore) HadStartedUpdatingPruningPointUTXOSet(dbContext model.DBWriter) (bool, error) {

domain/consensus/datastructures/reachabilitydatastore/reachability_data_staging_shard.go

@@ -1,53 +0,0 @@
-package reachabilitydatastore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type reachabilityDataStagingShard struct {
-	store                   *reachabilityDataStore
-	reachabilityData        map[externalapi.DomainHash]model.ReachabilityData
-	reachabilityReindexRoot *externalapi.DomainHash
-}
-
-func (rds *reachabilityDataStore) stagingShard(stagingArea *model.StagingArea) *reachabilityDataStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDReachabilityData, func() model.StagingShard {
-		return &reachabilityDataStagingShard{
-			store:                   rds,
-			reachabilityData:        make(map[externalapi.DomainHash]model.ReachabilityData),
-			reachabilityReindexRoot: nil,
-		}
-	}).(*reachabilityDataStagingShard)
-}
-
-func (rdss *reachabilityDataStagingShard) Commit(dbTx model.DBTransaction) error {
-	if rdss.reachabilityReindexRoot != nil {
-		reachabilityReindexRootBytes, err := rdss.store.serializeReachabilityReindexRoot(rdss.reachabilityReindexRoot)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(reachabilityReindexRootKey, reachabilityReindexRootBytes)
-		if err != nil {
-			return err
-		}
-		rdss.store.reachabilityReindexRootCache = rdss.reachabilityReindexRoot
-	}
-	for hash, reachabilityData := range rdss.reachabilityData {
-		reachabilityDataBytes, err := rdss.store.serializeReachabilityData(reachabilityData)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(rdss.store.reachabilityDataBlockHashAsKey(&hash), reachabilityDataBytes)
-		if err != nil {
-			return err
-		}
-		rdss.store.reachabilityDataCache.Add(&hash, reachabilityData)
-	}
-
-	return nil
-}
-
-func (rdss *reachabilityDataStagingShard) isStaged() bool {
-	return len(rdss.reachabilityData) != 0 || rdss.reachabilityReindexRoot != nil
-}

domain/consensus/datastructures/reachabilitydatastore/reachabilitydatastore.go

@@ -14,40 +14,74 @@ var reachabilityReindexRootKey = database.MakeBucket(nil).Key([]byte("reachabili
 
 // reachabilityDataStore represents a store of ReachabilityData
 type reachabilityDataStore struct {
-	reachabilityDataCache        *lrucache.LRUCache
-	reachabilityReindexRootCache *externalapi.DomainHash
+	reachabilityDataStaging        map[externalapi.DomainHash]model.ReachabilityData
+	reachabilityReindexRootStaging *externalapi.DomainHash
+	reachabilityDataCache          *lrucache.LRUCache
+	reachabilityReindexRootCache   *externalapi.DomainHash
 }
 
 // New instantiates a new ReachabilityDataStore
 func New(cacheSize int, preallocate bool) model.ReachabilityDataStore {
 	return &reachabilityDataStore{
-		reachabilityDataCache: lrucache.New(cacheSize, preallocate),
+		reachabilityDataStaging: make(map[externalapi.DomainHash]model.ReachabilityData),
+		reachabilityDataCache:   lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // StageReachabilityData stages the given reachabilityData for the given blockHash
-func (rds *reachabilityDataStore) StageReachabilityData(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, reachabilityData model.ReachabilityData) {
-	stagingShard := rds.stagingShard(stagingArea)
+func (rds *reachabilityDataStore) StageReachabilityData(blockHash *externalapi.DomainHash,
+	reachabilityData model.ReachabilityData) {
 
-	stagingShard.reachabilityData[*blockHash] = reachabilityData
+	rds.reachabilityDataStaging[*blockHash] = reachabilityData
 }
 
 // StageReachabilityReindexRoot stages the given reachabilityReindexRoot
-func (rds *reachabilityDataStore) StageReachabilityReindexRoot(stagingArea *model.StagingArea, reachabilityReindexRoot *externalapi.DomainHash) {
-	stagingShard := rds.stagingShard(stagingArea)
-
-	stagingShard.reachabilityReindexRoot = reachabilityReindexRoot
+func (rds *reachabilityDataStore) StageReachabilityReindexRoot(reachabilityReindexRoot *externalapi.DomainHash) {
+	rds.reachabilityReindexRootStaging = reachabilityReindexRoot
 }
 
-func (rds *reachabilityDataStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return rds.stagingShard(stagingArea).isStaged()
+func (rds *reachabilityDataStore) IsAnythingStaged() bool {
+	return len(rds.reachabilityDataStaging) != 0 || rds.reachabilityReindexRootStaging != nil
+}
+
+func (rds *reachabilityDataStore) Discard() {
+	rds.reachabilityDataStaging = make(map[externalapi.DomainHash]model.ReachabilityData)
+	rds.reachabilityReindexRootStaging = nil
+}
+
+func (rds *reachabilityDataStore) Commit(dbTx model.DBTransaction) error {
+	if rds.reachabilityReindexRootStaging != nil {
+		reachabilityReindexRootBytes, err := rds.serializeReachabilityReindexRoot(rds.reachabilityReindexRootStaging)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(reachabilityReindexRootKey, reachabilityReindexRootBytes)
+		if err != nil {
+			return err
+		}
+		rds.reachabilityReindexRootCache = rds.reachabilityReindexRootStaging
+	}
+	for hash, reachabilityData := range rds.reachabilityDataStaging {
+		reachabilityDataBytes, err := rds.serializeReachabilityData(reachabilityData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(rds.reachabilityDataBlockHashAsKey(&hash), reachabilityDataBytes)
+		if err != nil {
+			return err
+		}
+		rds.reachabilityDataCache.Add(&hash, reachabilityData)
+	}
+
+	rds.Discard()
+	return nil
 }
 
 // ReachabilityData returns the reachabilityData associated with the given blockHash
-func (rds *reachabilityDataStore) ReachabilityData(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (model.ReachabilityData, error) {
-	stagingShard := rds.stagingShard(stagingArea)
+func (rds *reachabilityDataStore) ReachabilityData(dbContext model.DBReader,
+	blockHash *externalapi.DomainHash) (model.ReachabilityData, error) {
 
-	if reachabilityData, ok := stagingShard.reachabilityData[*blockHash]; ok {
+	if reachabilityData, ok := rds.reachabilityDataStaging[*blockHash]; ok {
 		return reachabilityData, nil
 	}
 
@@ -68,10 +102,8 @@ func (rds *reachabilityDataStore) ReachabilityData(dbContext model.DBReader, sta
 	return reachabilityData, nil
 }
 
-func (rds *reachabilityDataStore) HasReachabilityData(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := rds.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.reachabilityData[*blockHash]; ok {
+func (rds *reachabilityDataStore) HasReachabilityData(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := rds.reachabilityDataStaging[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -83,11 +115,9 @@ func (rds *reachabilityDataStore) HasReachabilityData(dbContext model.DBReader,
 }
 
 // ReachabilityReindexRoot returns the current reachability reindex root
-func (rds *reachabilityDataStore) ReachabilityReindexRoot(dbContext model.DBReader, stagingArea *model.StagingArea) (*externalapi.DomainHash, error) {
-	stagingShard := rds.stagingShard(stagingArea)
-
-	if stagingShard.reachabilityReindexRoot != nil {
-		return stagingShard.reachabilityReindexRoot, nil
+func (rds *reachabilityDataStore) ReachabilityReindexRoot(dbContext model.DBReader) (*externalapi.DomainHash, error) {
+	if rds.reachabilityReindexRootStaging != nil {
+		return rds.reachabilityReindexRootStaging, nil
 	}
 
 	if rds.reachabilityReindexRootCache != nil {

domain/consensus/datastructures/utxodiffstore/utxo_diff_staging_shard.go

@@ -1,74 +0,0 @@
-package utxodiffstore
-
-import (
-	"github.com/kaspanet/kaspad/domain/consensus/model"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-)
-
-type utxoDiffStagingShard struct {
-	store              *utxoDiffStore
-	utxoDiffToAdd      map[externalapi.DomainHash]externalapi.UTXODiff
-	utxoDiffChildToAdd map[externalapi.DomainHash]*externalapi.DomainHash
-	toDelete           map[externalapi.DomainHash]struct{}
-}
-
-func (uds *utxoDiffStore) stagingShard(stagingArea *model.StagingArea) *utxoDiffStagingShard {
-	return stagingArea.GetOrCreateShard(model.StagingShardIDUTXODiff, func() model.StagingShard {
-		return &utxoDiffStagingShard{
-			store:              uds,
-			utxoDiffToAdd:      make(map[externalapi.DomainHash]externalapi.UTXODiff),
-			utxoDiffChildToAdd: make(map[externalapi.DomainHash]*externalapi.DomainHash),
-			toDelete:           make(map[externalapi.DomainHash]struct{}),
-		}
-	}).(*utxoDiffStagingShard)
-}
-
-func (udss *utxoDiffStagingShard) Commit(dbTx model.DBTransaction) error {
-	for hash, utxoDiff := range udss.utxoDiffToAdd {
-		utxoDiffBytes, err := udss.store.serializeUTXODiff(utxoDiff)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(udss.store.utxoDiffHashAsKey(&hash), utxoDiffBytes)
-		if err != nil {
-			return err
-		}
-		udss.store.utxoDiffCache.Add(&hash, utxoDiff)
-	}
-
-	for hash, utxoDiffChild := range udss.utxoDiffChildToAdd {
-		if utxoDiffChild == nil {
-			continue
-		}
-
-		utxoDiffChildBytes, err := udss.store.serializeUTXODiffChild(utxoDiffChild)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(udss.store.utxoDiffChildHashAsKey(&hash), utxoDiffChildBytes)
-		if err != nil {
-			return err
-		}
-		udss.store.utxoDiffChildCache.Add(&hash, utxoDiffChild)
-	}
-
-	for hash := range udss.toDelete {
-		err := dbTx.Delete(udss.store.utxoDiffHashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		udss.store.utxoDiffCache.Remove(&hash)
-
-		err = dbTx.Delete(udss.store.utxoDiffChildHashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		udss.store.utxoDiffChildCache.Remove(&hash)
-	}
-
-	return nil
-}
-
-func (udss *utxoDiffStagingShard) isStaged() bool {
-	return len(udss.utxoDiffToAdd) != 0 || len(udss.utxoDiffChildToAdd) != 0 || len(udss.toDelete) != 0
-}

domain/consensus/datastructures/utxodiffstore/utxodiffstore.go

@@ -15,46 +15,100 @@ var utxoDiffChildBucket = database.MakeBucket([]byte("utxo-diff-children"))
 
 // utxoDiffStore represents a store of UTXODiffs
 type utxoDiffStore struct {
-	utxoDiffCache      *lrucache.LRUCache
-	utxoDiffChildCache *lrucache.LRUCache
+	utxoDiffStaging      map[externalapi.DomainHash]externalapi.UTXODiff
+	utxoDiffChildStaging map[externalapi.DomainHash]*externalapi.DomainHash
+	toDelete             map[externalapi.DomainHash]struct{}
+	utxoDiffCache        *lrucache.LRUCache
+	utxoDiffChildCache   *lrucache.LRUCache
 }
 
 // New instantiates a new UTXODiffStore
 func New(cacheSize int, preallocate bool) model.UTXODiffStore {
 	return &utxoDiffStore{
-		utxoDiffCache:      lrucache.New(cacheSize, preallocate),
-		utxoDiffChildCache: lrucache.New(cacheSize, preallocate),
+		utxoDiffStaging:      make(map[externalapi.DomainHash]externalapi.UTXODiff),
+		utxoDiffChildStaging: make(map[externalapi.DomainHash]*externalapi.DomainHash),
+		toDelete:             make(map[externalapi.DomainHash]struct{}),
+		utxoDiffCache:        lrucache.New(cacheSize, preallocate),
+		utxoDiffChildCache:   lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given utxoDiff for the given blockHash
-func (uds *utxoDiffStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, utxoDiff externalapi.UTXODiff, utxoDiffChild *externalapi.DomainHash) {
-	stagingShard := uds.stagingShard(stagingArea)
-
-	stagingShard.utxoDiffToAdd[*blockHash] = utxoDiff
+func (uds *utxoDiffStore) Stage(blockHash *externalapi.DomainHash, utxoDiff externalapi.UTXODiff, utxoDiffChild *externalapi.DomainHash) {
+	uds.utxoDiffStaging[*blockHash] = utxoDiff
 
 	if utxoDiffChild != nil {
-		stagingShard.utxoDiffChildToAdd[*blockHash] = utxoDiffChild
+		uds.utxoDiffChildStaging[*blockHash] = utxoDiffChild
 	}
 }
 
-func (uds *utxoDiffStore) IsStaged(stagingArea *model.StagingArea) bool {
-	return uds.stagingShard(stagingArea).isStaged()
+func (uds *utxoDiffStore) IsStaged() bool {
+	return len(uds.utxoDiffStaging) != 0 || len(uds.utxoDiffChildStaging) != 0 || len(uds.toDelete) != 0
 }
 
-func (uds *utxoDiffStore) isBlockHashStaged(stagingShard *utxoDiffStagingShard, blockHash *externalapi.DomainHash) bool {
-	if _, ok := stagingShard.utxoDiffToAdd[*blockHash]; ok {
+func (uds *utxoDiffStore) IsBlockHashStaged(blockHash *externalapi.DomainHash) bool {
+	if _, ok := uds.utxoDiffStaging[*blockHash]; ok {
 		return true
 	}
-	_, ok := stagingShard.utxoDiffChildToAdd[*blockHash]
+	_, ok := uds.utxoDiffChildStaging[*blockHash]
 	return ok
 }
 
-// UTXODiff gets the utxoDiff associated with the given blockHash
-func (uds *utxoDiffStore) UTXODiff(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (externalapi.UTXODiff, error) {
-	stagingShard := uds.stagingShard(stagingArea)
+func (uds *utxoDiffStore) Discard() {
+	uds.utxoDiffStaging = make(map[externalapi.DomainHash]externalapi.UTXODiff)
+	uds.utxoDiffChildStaging = make(map[externalapi.DomainHash]*externalapi.DomainHash)
+	uds.toDelete = make(map[externalapi.DomainHash]struct{})
+}
 
-	if utxoDiff, ok := stagingShard.utxoDiffToAdd[*blockHash]; ok {
+func (uds *utxoDiffStore) Commit(dbTx model.DBTransaction) error {
+	for hash, utxoDiff := range uds.utxoDiffStaging {
+		utxoDiffBytes, err := uds.serializeUTXODiff(utxoDiff)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(uds.utxoDiffHashAsKey(&hash), utxoDiffBytes)
+		if err != nil {
+			return err
+		}
+		uds.utxoDiffCache.Add(&hash, utxoDiff)
+	}
+	for hash, utxoDiffChild := range uds.utxoDiffChildStaging {
+		if utxoDiffChild == nil {
+			continue
+		}
+
+		utxoDiffChildBytes, err := uds.serializeUTXODiffChild(utxoDiffChild)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(uds.utxoDiffChildHashAsKey(&hash), utxoDiffChildBytes)
+		if err != nil {
+			return err
+		}
+		uds.utxoDiffChildCache.Add(&hash, utxoDiffChild)
+	}
+
+	for hash := range uds.toDelete {
+		err := dbTx.Delete(uds.utxoDiffHashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		uds.utxoDiffCache.Remove(&hash)
+
+		err = dbTx.Delete(uds.utxoDiffChildHashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		uds.utxoDiffChildCache.Remove(&hash)
+	}
+
+	uds.Discard()
+	return nil
+}
+
+// UTXODiff gets the utxoDiff associated with the given blockHash
+func (uds *utxoDiffStore) UTXODiff(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.UTXODiff, error) {
+	if utxoDiff, ok := uds.utxoDiffStaging[*blockHash]; ok {
 		return utxoDiff, nil
 	}
 
@@ -76,10 +130,8 @@ func (uds *utxoDiffStore) UTXODiff(dbContext model.DBReader, stagingArea *model.
 }
 
 // UTXODiffChild gets the utxoDiff child associated with the given blockHash
-func (uds *utxoDiffStore) UTXODiffChild(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
-	stagingShard := uds.stagingShard(stagingArea)
-
-	if utxoDiffChild, ok := stagingShard.utxoDiffChildToAdd[*blockHash]; ok {
+func (uds *utxoDiffStore) UTXODiffChild(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
+	if utxoDiffChild, ok := uds.utxoDiffChildStaging[*blockHash]; ok {
 		return utxoDiffChild, nil
 	}
 
@@ -101,10 +153,8 @@ func (uds *utxoDiffStore) UTXODiffChild(dbContext model.DBReader, stagingArea *m
 }
 
 // HasUTXODiffChild returns true if the given blockHash has a UTXODiffChild
-func (uds *utxoDiffStore) HasUTXODiffChild(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
-	stagingShard := uds.stagingShard(stagingArea)
-
-	if _, ok := stagingShard.utxoDiffChildToAdd[*blockHash]; ok {
+func (uds *utxoDiffStore) HasUTXODiffChild(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
+	if _, ok := uds.utxoDiffChildStaging[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -116,19 +166,17 @@ func (uds *utxoDiffStore) HasUTXODiffChild(dbContext model.DBReader, stagingArea
 }
 
 // Delete deletes the utxoDiff associated with the given blockHash
-func (uds *utxoDiffStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
-	stagingShard := uds.stagingShard(stagingArea)
-
-	if uds.isBlockHashStaged(stagingShard, blockHash) {
-		if _, ok := stagingShard.utxoDiffToAdd[*blockHash]; ok {
-			delete(stagingShard.utxoDiffToAdd, *blockHash)
+func (uds *utxoDiffStore) Delete(blockHash *externalapi.DomainHash) {
+	if uds.IsBlockHashStaged(blockHash) {
+		if _, ok := uds.utxoDiffStaging[*blockHash]; ok {
+			delete(uds.utxoDiffStaging, *blockHash)
 		}
-		if _, ok := stagingShard.utxoDiffChildToAdd[*blockHash]; ok {
-			delete(stagingShard.utxoDiffChildToAdd, *blockHash)
+		if _, ok := uds.utxoDiffChildStaging[*blockHash]; ok {
+			delete(uds.utxoDiffChildStaging, *blockHash)
 		}
 		return
 	}
-	stagingShard.toDelete[*blockHash] = struct{}{}
+	uds.toDelete[*blockHash] = struct{}{}
 }
 
 func (uds *utxoDiffStore) utxoDiffHashAsKey(hash *externalapi.DomainHash) model.DBKey {

domain/consensus/factory.go

@@ -5,8 +5,6 @@ import (
 	"os"
 	"sync"
 
-	daablocksstore "github.com/kaspanet/kaspad/domain/consensus/datastructures/daablocksstore"
-
 	"github.com/kaspanet/kaspad/domain/consensus/datastructures/headersselectedchainstore"
 
 	"github.com/kaspanet/kaspad/domain/consensus/processes/dagtraversalmanager"
@@ -124,20 +122,10 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 	reachabilityDataStore := reachabilitydatastore.New(pruningWindowSizePlusFinalityDepthForCache, preallocateCaches)
 	utxoDiffStore := utxodiffstore.New(200, preallocateCaches)
 	consensusStateStore := consensusstatestore.New(10_000, preallocateCaches)
-
-	// Some tests artificially decrease the pruningWindowSize, thus making the GhostDagStore cache too small for a
-	// a single DifficultyAdjustmentWindow. To alleviate this problem we make sure that the cache size is at least
-	// dagParams.DifficultyAdjustmentWindowSize
-	ghostdagDataCacheSize := pruningWindowSizeForCaches
-	if ghostdagDataCacheSize < dagParams.DifficultyAdjustmentWindowSize {
-		ghostdagDataCacheSize = dagParams.DifficultyAdjustmentWindowSize
-	}
-	ghostdagDataStore := ghostdagdatastore.New(ghostdagDataCacheSize, preallocateCaches)
-
+	ghostdagDataStore := ghostdagdatastore.New(pruningWindowSizeForCaches, preallocateCaches)
 	headersSelectedTipStore := headersselectedtipstore.New()
 	finalityStore := finalitystore.New(200, preallocateCaches)
 	headersSelectedChainStore := headersselectedchainstore.New(pruningWindowSizeForCaches, preallocateCaches)
-	daaBlocksStore := daablocksstore.New(pruningWindowSizeForCaches, int(dagParams.FinalityDepth()), preallocateCaches)
 
 	// Processes
 	reachabilityManager := reachabilitymanager.New(
@@ -161,15 +149,13 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		ghostdagDataStore,
 		reachabilityDataStore,
 		ghostdagManager,
-		consensusStateStore,
-		dagParams.GenesisHash)
+		consensusStateStore)
 	pastMedianTimeManager := f.pastMedianTimeConsructor(
 		dagParams.TimestampDeviationTolerance,
 		dbManager,
 		dagTraversalManager,
 		blockHeaderStore,
-		ghostdagDataStore,
-		dagParams.GenesisHash)
+		ghostdagDataStore)
 	transactionValidator := transactionvalidator.New(dagParams.BlockCoinbaseMaturity,
 		dagParams.EnableNonNativeSubnetworks,
 		dagParams.MassPerTxByte,
@@ -178,14 +164,12 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		dagParams.MaxCoinbasePayloadLength,
 		dbManager,
 		pastMedianTimeManager,
-		ghostdagDataStore,
-		daaBlocksStore)
+		ghostdagDataStore)
 	difficultyManager := f.difficultyConstructor(
 		dbManager,
 		ghostdagManager,
 		ghostdagDataStore,
 		blockHeaderStore,
-		daaBlocksStore,
 		dagTopologyManager,
 		dagTraversalManager,
 		dagParams.PowMax,
@@ -199,8 +183,7 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		dagParams.BaseSubsidy,
 		dagParams.CoinbasePayloadScriptPublicKeyMaxLength,
 		ghostdagDataStore,
-		acceptanceDataStore,
-		daaBlocksStore)
+		acceptanceDataStore)
 	headerTipsManager := headersselectedtipmanager.New(dbManager, dagTopologyManager, dagTraversalManager,
 		ghostdagManager, headersSelectedTipStore, headersSelectedChainStore)
 	genesisHash := dagParams.GenesisHash
@@ -265,7 +248,6 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		coinbaseManager,
 		mergeDepthManager,
 		finalityManager,
-		difficultyManager,
 
 		blockStatusStore,
 		ghostdagDataStore,
@@ -277,8 +259,7 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		acceptanceDataStore,
 		blockHeaderStore,
 		headersSelectedTipStore,
-		pruningStore,
-		daaBlocksStore)
+		pruningStore)
 	if err != nil {
 		return nil, err
 	}
@@ -298,7 +279,6 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		blockStore,
 		blockHeaderStore,
 		utxoDiffStore,
-		daaBlocksStore,
 		isArchivalNode,
 		genesisHash,
 		dagParams.FinalityDepth(),
@@ -363,8 +343,7 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		blockHeaderStore,
 		headersSelectedTipStore,
 		finalityStore,
-		headersSelectedChainStore,
-		daaBlocksStore)
+		headersSelectedChainStore)
 
 	c := &consensus{
 		lock:            &sync.Mutex{},
@@ -402,7 +381,6 @@ func (f *factory) NewConsensus(dagParams *dagconfig.Params, db infrastructuredat
 		utxoDiffStore:             utxoDiffStore,
 		finalityStore:             finalityStore,
 		headersSelectedChainStore: headersSelectedChainStore,
-		daaBlocksStore:            daaBlocksStore,
 	}
 
 	genesisInfo, err := c.GetBlockInfo(genesisHash)

domain/consensus/finality_test.go

@@ -83,8 +83,6 @@ func TestFinality(t *testing.T) {
 			}
 		}
 
-		stagingArea := model.NewStagingArea()
-
 		// Add two more blocks in the side-chain until it becomes the selected chain
 		for i := uint64(0); i < 2; i++ {
 			sideChainTip, err = buildAndInsertBlock([]*externalapi.DomainHash{sideChainTipHash})
@@ -122,7 +120,7 @@ func TestFinality(t *testing.T) {
 			mainChainTipHash = consensushashing.BlockHash(mainChainTip)
 		}
 
-		virtualFinality, err := consensus.FinalityManager().VirtualFinalityPoint(stagingArea)
+		virtualFinality, err := consensus.FinalityManager().VirtualFinalityPoint()
 		if err != nil {
 			t.Fatalf("TestFinality: Failed getting the virtual's finality point: %v", err)
 		}
@@ -147,14 +145,12 @@ func TestFinality(t *testing.T) {
 		if err != nil {
 			t.Fatalf("TestFinality: Failed getting virtual selectedParent: %v", err)
 		}
-		selectedTipGhostDagData, err :=
-			consensus.GHOSTDAGDataStore().Get(consensus.DatabaseContext(), stagingArea, selectedTip)
+		selectedTipGhostDagData, err := consensus.GHOSTDAGDataStore().Get(consensus.DatabaseContext(), selectedTip)
 		if err != nil {
 			t.Fatalf("TestFinality: Failed getting the ghost dag data of the selected tip: %v", err)
 		}
 
-		sideChainTipGhostDagData, err :=
-			consensus.GHOSTDAGDataStore().Get(consensus.DatabaseContext(), stagingArea, sideChainTipHash)
+		sideChainTipGhostDagData, err := consensus.GHOSTDAGDataStore().Get(consensus.DatabaseContext(), sideChainTipHash)
 		if err != nil {
 			t.Fatalf("TestFinality: Failed getting the ghost dag data of the sidechain tip: %v", err)
 		}
@@ -306,9 +302,7 @@ func TestBoundedMergeDepth(t *testing.T) {
 			t.Fatalf("TestBoundedMergeDepth: Expected blueKosherizingBlock to not violate merge depth")
 		}
 
-		stagingArea := model.NewStagingArea()
-		virtualGhotDagData, err := consensusReal.GHOSTDAGDataStore().Get(consensusReal.DatabaseContext(),
-			stagingArea, model.VirtualBlockHash)
+		virtualGhotDagData, err := consensusReal.GHOSTDAGDataStore().Get(consensusReal.DatabaseContext(), model.VirtualBlockHash)
 		if err != nil {
 			t.Fatalf("TestBoundedMergeDepth: Failed getting the ghostdag data of the virtual: %v", err)
 		}
@@ -356,8 +350,7 @@ func TestBoundedMergeDepth(t *testing.T) {
 			t.Fatalf("TestBoundedMergeDepth: Expected %s to be the selectedTip but found %s instead", tip, virtualSelectedParent)
 		}
 
-		virtualGhotDagData, err = consensusReal.GHOSTDAGDataStore().Get(
-			consensusReal.DatabaseContext(), stagingArea, model.VirtualBlockHash)
+		virtualGhotDagData, err = consensusReal.GHOSTDAGDataStore().Get(consensusReal.DatabaseContext(), model.VirtualBlockHash)
 		if err != nil {
 			t.Fatalf("TestBoundedMergeDepth: Failed getting the ghostdag data of the virtual: %v", err)
 		}
@@ -379,8 +372,7 @@ func TestBoundedMergeDepth(t *testing.T) {
 		}
 
 		// Now `pointAtBlueKosherizing` itself is actually still blue, so we can still point at that even though we can't point at kosherizing directly anymore
-		transitiveBlueKosherizing, isViolatingMergeDepth :=
-			checkViolatingMergeDepth(consensusReal, []*externalapi.DomainHash{consensushashing.BlockHash(pointAtBlueKosherizing), tip})
+		transitiveBlueKosherizing, isViolatingMergeDepth := checkViolatingMergeDepth(consensusReal, []*externalapi.DomainHash{consensushashing.BlockHash(pointAtBlueKosherizing), tip})
 		if isViolatingMergeDepth {
 			t.Fatalf("TestBoundedMergeDepth: Expected transitiveBlueKosherizing to not violate merge depth")
 		}

domain/consensus/model/acceptancedata_equal_clone_test.go

@@ -26,9 +26,14 @@ func initTestTransactionAcceptanceDataForClone() []*externalapi.TransactionAccep
 				LockTime:     1,
 				SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 				Gas:          1,
-				Payload:      []byte{0x01},
-				Fee:          0,
-				Mass:         1,
+				PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+				Payload: []byte{0x01},
+				Fee:     0,
+				Mass:    1,
 				ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -70,9 +75,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -99,9 +109,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -127,9 +142,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -155,9 +175,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -184,9 +209,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -214,9 +244,14 @@ func initTransactionAcceptanceDataForEqual() []testTransactionAcceptanceDataStru
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -319,6 +354,11 @@ func initTestBlockAcceptanceDataForClone() []*externalapi.BlockAcceptanceData {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,
@@ -366,6 +406,11 @@ func iniBlockAcceptanceDataForEqual() []testBlockAcceptanceDataStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -398,6 +443,11 @@ func iniBlockAcceptanceDataForEqual() []testBlockAcceptanceDataStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -430,6 +480,11 @@ func iniBlockAcceptanceDataForEqual() []testBlockAcceptanceDataStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -462,6 +517,11 @@ func iniBlockAcceptanceDataForEqual() []testBlockAcceptanceDataStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -495,6 +555,11 @@ func iniBlockAcceptanceDataForEqual() []testBlockAcceptanceDataStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -598,6 +663,11 @@ func initTestAcceptanceDataForClone() []externalapi.AcceptanceData {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,
@@ -647,6 +717,11 @@ func initAcceptanceDataForEqual() []testAcceptanceDataStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,
@@ -679,6 +754,11 @@ func initAcceptanceDataForEqual() []testAcceptanceDataStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,
@@ -711,6 +791,11 @@ func initAcceptanceDataForEqual() []testAcceptanceDataStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,
@@ -743,6 +828,11 @@ func initAcceptanceDataForEqual() []testAcceptanceDataStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					0,
 					1,

domain/consensus/model/externalapi/block_equal_clone_test.go

@@ -26,9 +26,14 @@ func initTestBaseTransactions() []*externalapi.DomainTransaction {
 		LockTime:     1,
 		SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 		Gas:          1,
-		Payload:      []byte{0x01},
-		Fee:          0,
-		Mass:         1,
+		PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+		Payload: []byte{0x01},
+		Fee:     0,
+		Mass:    1,
 		ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -47,9 +52,14 @@ func initTestAnotherTransactions() []*externalapi.DomainTransaction {
 		LockTime:     1,
 		SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 		Gas:          1,
-		Payload:      []byte{0x02},
-		Fee:          0,
-		Mass:         1,
+		PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}),
+		Payload: []byte{0x01},
+		Fee:     0,
+		Mass:    1,
 		ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -68,9 +78,14 @@ func initTestTwoTransactions() []*externalapi.DomainTransaction {
 		LockTime:     1,
 		SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 		Gas:          1,
-		Payload:      []byte{0x01},
-		Fee:          0,
-		Mass:         1,
+		PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}),
+		Payload: []byte{0x01},
+		Fee:     0,
+		Mass:    1,
 		ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -83,9 +98,14 @@ func initTestTwoTransactions() []*externalapi.DomainTransaction {
 		LockTime:     1,
 		SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 		Gas:          1,
-		Payload:      []byte{0x01},
-		Fee:          0,
-		Mass:         1,
+		PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}),
+		Payload: []byte{0x01},
+		Fee:     0,
+		Mass:    1,
 		ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

domain/consensus/model/externalapi/consensus.go

@@ -12,7 +12,7 @@ type Consensus interface {
 	GetBlockChildren(blockHash *DomainHash) ([]*DomainHash, error)
 	GetBlockAcceptanceData(blockHash *DomainHash) (AcceptanceData, error)
 
-	GetHashesBetween(lowHash, highHash *DomainHash, maxBlueScoreDifference uint64) (hashes []*DomainHash, actualHighHash *DomainHash, err error)
+	GetHashesBetween(lowHash, highHash *DomainHash, maxBlueScoreDifference uint64) ([]*DomainHash, error)
 	GetMissingBlockBodyHashes(highHash *DomainHash) ([]*DomainHash, error)
 	GetPruningPointUTXOs(expectedPruningPointHash *DomainHash, fromOutpoint *DomainOutpoint, limit int) ([]*OutpointAndUTXOEntryPair, error)
 	GetVirtualUTXOs(expectedVirtualParents []*DomainHash, fromOutpoint *DomainOutpoint, limit int) ([]*OutpointAndUTXOEntryPair, error)

domain/consensus/model/externalapi/hash.go

@@ -15,11 +15,6 @@ type DomainHash struct {
 	hashArray [DomainHashSize]byte
 }
 
-// NewZeroHash returns a DomainHash that represents the zero value (0x000000...000)
-func NewZeroHash() *DomainHash {
-	return &DomainHash{hashArray: [32]byte{}}
-}
-
 // NewDomainHashFromByteArray constructs a new DomainHash out of a byte array
 func NewDomainHashFromByteArray(hashBytes *[DomainHashSize]byte) *DomainHash {
 	return &DomainHash{

domain/consensus/model/externalapi/transaction.go

@@ -15,6 +15,7 @@ type DomainTransaction struct {
 	LockTime     uint64
 	SubnetworkID DomainSubnetworkID
 	Gas          uint64
+	PayloadHash  DomainHash
 	Payload      []byte
 
 	Fee  uint64
@@ -52,6 +53,7 @@ func (tx *DomainTransaction) Clone() *DomainTransaction {
 		LockTime:     tx.LockTime,
 		SubnetworkID: *tx.SubnetworkID.Clone(),
 		Gas:          tx.Gas,
+		PayloadHash:  tx.PayloadHash,
 		Payload:      payloadClone,
 		Fee:          tx.Fee,
 		Mass:         tx.Mass,
@@ -62,7 +64,7 @@ func (tx *DomainTransaction) Clone() *DomainTransaction {
 // If this doesn't compile, it means the type definition has been changed, so it's
 // an indication to update Equal and Clone accordingly.
 var _ = DomainTransaction{0, []*DomainTransactionInput{}, []*DomainTransactionOutput{}, 0,
-	DomainSubnetworkID{}, 0, []byte{}, 0, 0,
+	DomainSubnetworkID{}, 0, DomainHash{}, []byte{}, 0, 0,
 	&DomainTransactionID{}}
 
 // Equal returns whether tx equals to other
@@ -107,6 +109,10 @@ func (tx *DomainTransaction) Equal(other *DomainTransaction) bool {
 		return false
 	}
 
+	if !tx.PayloadHash.Equal(&other.PayloadHash) {
+		return false
+	}
+
 	if !bytes.Equal(tx.Payload, other.Payload) {
 		return false
 	}

domain/consensus/model/externalapi/transaction_equal_clone_test.go

@@ -79,6 +79,10 @@ func initTestBaseTransaction() *externalapi.DomainTransaction {
 		1,
 		externalapi.DomainSubnetworkID{0x01},
 		1,
+		*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 		[]byte{0x01},
 		0,
 		1,
@@ -93,6 +97,34 @@ func initTestBaseTransaction() *externalapi.DomainTransaction {
 func initTestTransactionToCompare() []*transactionToCompare {
 
 	testTx := []*transactionToCompare{{
+		tx: &externalapi.DomainTransaction{
+			1,
+			[]*externalapi.DomainTransactionInput{{externalapi.DomainOutpoint{
+				*externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x01}), 0xFFFF},
+				[]byte{1, 2, 3},
+				uint64(0xFFFFFFFF),
+				utxo.NewUTXOEntry(1, &externalapi.ScriptPublicKey{Script: []byte{0, 1, 2, 3}, Version: 0}, true, 2)}},
+			[]*externalapi.DomainTransactionOutput{{uint64(0xFFFF),
+				&externalapi.ScriptPublicKey{Script: []byte{1, 2}, Version: 0}},
+				{uint64(0xFFFF),
+					&externalapi.ScriptPublicKey{Script: []byte{1, 3}, Version: 0}}},
+			1,
+			externalapi.DomainSubnetworkID{0x01},
+			1,
+			*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}), //Changed
+			[]byte{0x01},
+			0,
+			1,
+			externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}),
+		},
+		expectedResult: false,
+	}, {
 		tx: &externalapi.DomainTransaction{
 			1,
 			[]*externalapi.DomainTransactionInput{{externalapi.DomainOutpoint{
@@ -107,6 +139,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 			1,
 			externalapi.DomainSubnetworkID{0x01},
 			1,
+			*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 			[]byte{0x01},
 			0,
 			1,
@@ -131,6 +167,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 			1,
 			externalapi.DomainSubnetworkID{0x01, 0x02}, //Changed
 			1,
+			*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 			[]byte{0x01},
 			0,
 			1,
@@ -155,6 +195,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 			1,
 			externalapi.DomainSubnetworkID{0x01},
 			1,
+			*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 			[]byte{0x01, 0x02}, //Changed
 			0,
 			1,
@@ -178,6 +222,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 			1,
 			externalapi.DomainSubnetworkID{0x01},
 			1,
+			*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 			[]byte{0x01},
 			0,
 			1,
@@ -204,6 +252,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -229,6 +281,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				1000000000, //Changed
 				1,
@@ -252,6 +308,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -275,6 +335,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				2, //Changed
@@ -298,6 +362,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				2, //Changed
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -326,6 +394,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -350,6 +422,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -373,6 +449,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -393,6 +473,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -418,6 +502,10 @@ func initTestTransactionToCompare() []*transactionToCompare {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				2, // Changed
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				0,
 				1,
@@ -449,9 +537,13 @@ func initTestDomainTransactionForClone() []*externalapi.DomainTransaction {
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          5555555555,
-			Mass:         1,
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}),
+			Payload: []byte{0x01},
+			Fee:     5555555555,
+			Mass:    1,
 			ID: externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -463,10 +555,14 @@ func initTestDomainTransactionForClone() []*externalapi.DomainTransaction {
 			LockTime:     1,
 			SubnetworkID: externalapi.DomainSubnetworkID{0x01},
 			Gas:          1,
-			Payload:      []byte{0x01},
-			Fee:          0,
-			Mass:         1,
-			ID:           externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{}),
+			PayloadHash: *externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}),
+			Payload: []byte{0x01},
+			Fee:     0,
+			Mass:    1,
+			ID:      externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{}),
 		},
 	}
 	return tests
@@ -482,6 +578,27 @@ func initTestDomainTransactionForEqual() []testDomainTransactionStruct {
 		{
 			baseTx: nil,
 			transactionToCompareTo: []*transactionToCompare{{
+				tx: &externalapi.DomainTransaction{
+					1,
+					[]*externalapi.DomainTransactionInput{},
+					[]*externalapi.DomainTransactionOutput{},
+					1,
+					externalapi.DomainSubnetworkID{0x01},
+					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
+					[]byte{0x01},
+					0,
+					1,
+					externalapi.NewDomainTransactionIDFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}),
+				},
+				expectedResult: false,
+			}, {
 				tx:             nil,
 				expectedResult: true}},
 		}, {
@@ -492,6 +609,10 @@ func initTestDomainTransactionForEqual() []testDomainTransactionStruct {
 				1,
 				externalapi.DomainSubnetworkID{0x01},
 				1,
+				*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 				[]byte{0x01},
 				1,
 				1,
@@ -511,6 +632,10 @@ func initTestDomainTransactionForEqual() []testDomainTransactionStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					0,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					1,
 					1,
@@ -525,6 +650,10 @@ func initTestDomainTransactionForEqual() []testDomainTransactionStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					1,
 					1,
@@ -539,6 +668,10 @@ func initTestDomainTransactionForEqual() []testDomainTransactionStruct {
 					1,
 					externalapi.DomainSubnetworkID{0x01},
 					1,
+					*externalapi.NewDomainHashFromByteArray(&[externalapi.DomainHashSize]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+						0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}),
 					[]byte{0x01},
 					2, // Changed fee
 					1,

domain/consensus/model/externalapi/utxodiff.go

@@ -27,5 +27,5 @@ type MutableUTXODiff interface {
 	ToRemove() UTXOCollection
 
 	WithDiffInPlace(other UTXODiff) error
-	AddTransaction(transaction *DomainTransaction, blockDAAScore uint64) error
+	AddTransaction(transaction *DomainTransaction, blockBlueScore uint64) error
 }

domain/consensus/model/externalapi/utxoentry.go

@@ -7,7 +7,7 @@ package externalapi
 type UTXOEntry interface {
 	Amount() uint64
 	ScriptPublicKey() *ScriptPublicKey // The public key script for the output.
-	BlockDAAScore() uint64             // Blue score of the block accepting the tx.
+	BlockBlueScore() uint64            // Blue score of the block accepting the tx.
 	IsCoinbase() bool
 	Equal(other UTXOEntry) bool
 }

domain/consensus/model/interface_datastructures_acceptancedatastore.go

@@ -5,8 +5,8 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // AcceptanceDataStore represents a store of AcceptanceData
 type AcceptanceDataStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData)
-	IsStaged(stagingArea *StagingArea) bool
-	Get(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
+	Stage(blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData)
+	IsStaged() bool
+	Get(dbContext DBReader, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error)
+	Delete(blockHash *externalapi.DomainHash)
 }

domain/consensus/model/interface_datastructures_blockheaderstore.go

@@ -5,11 +5,11 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // BlockHeaderStore represents a store of block headers
 type BlockHeaderStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader)
-	IsStaged(stagingArea *StagingArea) bool
-	BlockHeader(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error)
-	HasBlockHeader(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
-	BlockHeaders(dbContext DBReader, stagingArea *StagingArea, blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
-	Count(stagingArea *StagingArea) uint64
+	Stage(blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader)
+	IsStaged() bool
+	BlockHeader(dbContext DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error)
+	HasBlockHeader(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
+	BlockHeaders(dbContext DBReader, blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error)
+	Delete(blockHash *externalapi.DomainHash)
+	Count() uint64
 }

domain/consensus/model/interface_datastructures_blockrelationstore.go

@@ -5,8 +5,8 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // BlockRelationStore represents a store of BlockRelations
 type BlockRelationStore interface {
 	Store
-	StageBlockRelation(stagingArea *StagingArea, blockHash *externalapi.DomainHash, blockRelations *BlockRelations)
-	IsStaged(stagingArea *StagingArea) bool
-	BlockRelation(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (*BlockRelations, error)
-	Has(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
+	StageBlockRelation(blockHash *externalapi.DomainHash, blockRelations *BlockRelations)
+	IsStaged() bool
+	BlockRelation(dbContext DBReader, blockHash *externalapi.DomainHash) (*BlockRelations, error)
+	Has(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
 }

domain/consensus/model/interface_datastructures_blockstatusstore.go

@@ -5,8 +5,8 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // BlockStatusStore represents a store of BlockStatuses
 type BlockStatusStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus)
-	IsStaged(stagingArea *StagingArea) bool
-	Get(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error)
-	Exists(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
+	Stage(blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus)
+	IsStaged() bool
+	Get(dbContext DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error)
+	Exists(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
 }

domain/consensus/model/interface_datastructures_blockstore.go

@@ -5,12 +5,12 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // BlockStore represents a store of blocks
 type BlockStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, block *externalapi.DomainBlock)
-	IsStaged(stagingArea *StagingArea) bool
-	Block(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error)
-	HasBlock(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
-	Blocks(dbContext DBReader, stagingArea *StagingArea, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
-	Count(stagingArea *StagingArea) uint64
+	Stage(blockHash *externalapi.DomainHash, block *externalapi.DomainBlock)
+	IsStaged() bool
+	Block(dbContext DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error)
+	HasBlock(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
+	Blocks(dbContext DBReader, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error)
+	Delete(blockHash *externalapi.DomainHash)
+	Count() uint64
 	AllBlockHashesIterator(dbContext DBReader) (BlockIterator, error)
 }

domain/consensus/model/interface_datastructures_consensusstatestore.go

@@ -5,16 +5,17 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // ConsensusStateStore represents a store for the current consensus state
 type ConsensusStateStore interface {
 	Store
-	IsStaged(stagingArea *StagingArea) bool
+	IsStaged() bool
 
-	StageVirtualUTXODiff(stagingArea *StagingArea, virtualUTXODiff externalapi.UTXODiff)
-	UTXOByOutpoint(dbContext DBReader, stagingArea *StagingArea, outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error)
-	HasUTXOByOutpoint(dbContext DBReader, stagingArea *StagingArea, outpoint *externalapi.DomainOutpoint) (bool, error)
-	VirtualUTXOSetIterator(dbContext DBReader, stagingArea *StagingArea) (externalapi.ReadOnlyUTXOSetIterator, error)
-	VirtualUTXOs(dbContext DBReader, fromOutpoint *externalapi.DomainOutpoint, limit int) ([]*externalapi.OutpointAndUTXOEntryPair, error)
+	StageVirtualUTXODiff(virtualUTXODiff externalapi.UTXODiff)
+	UTXOByOutpoint(dbContext DBReader, outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error)
+	HasUTXOByOutpoint(dbContext DBReader, outpoint *externalapi.DomainOutpoint) (bool, error)
+	VirtualUTXOSetIterator(dbContext DBReader) (externalapi.ReadOnlyUTXOSetIterator, error)
+	VirtualUTXOs(dbContext DBReader,
+		fromOutpoint *externalapi.DomainOutpoint, limit int) ([]*externalapi.OutpointAndUTXOEntryPair, error)
 
-	StageTips(stagingArea *StagingArea, tipHashes []*externalapi.DomainHash)
-	Tips(stagingArea *StagingArea, dbContext DBReader) ([]*externalapi.DomainHash, error)
+	StageTips(tipHashes []*externalapi.DomainHash)
+	Tips(dbContext DBReader) ([]*externalapi.DomainHash, error)
 
 	StartImportingPruningPointUTXOSet(dbContext DBWriter) error
 	HadStartedImportingPruningPointUTXOSet(dbContext DBWriter) (bool, error)

domain/consensus/model/interface_datastructures_daablocksstore.go

@@ -1,14 +0,0 @@
-package model
-
-import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-
-// DAABlocksStore represents a store of ???
-type DAABlocksStore interface {
-	Store
-	StageDAAScore(stagingArea *StagingArea, blockHash *externalapi.DomainHash, daaScore uint64)
-	StageBlockDAAAddedBlocks(stagingArea *StagingArea, blockHash *externalapi.DomainHash, addedBlocks []*externalapi.DomainHash)
-	IsStaged(stagingArea *StagingArea) bool
-	DAAAddedBlocks(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error)
-	DAAScore(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (uint64, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
-}

domain/consensus/model/interface_datastructures_finalitystore.go

@@ -7,7 +7,7 @@ import (
 // FinalityStore represents a store for finality data
 type FinalityStore interface {
 	Store
-	IsStaged(stagingArea *StagingArea) bool
-	StageFinalityPoint(stagingArea *StagingArea, blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash)
-	FinalityPoint(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error)
+	IsStaged() bool
+	StageFinalityPoint(blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash)
+	FinalityPoint(dbContext DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error)
 }

domain/consensus/model/interface_datastructures_ghostdagdatastore.go

@@ -5,7 +5,7 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // GHOSTDAGDataStore represents a store of BlockGHOSTDAGData
 type GHOSTDAGDataStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, blockGHOSTDAGData *BlockGHOSTDAGData)
-	IsStaged(stagingArea *StagingArea) bool
-	Get(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (*BlockGHOSTDAGData, error)
+	Stage(blockHash *externalapi.DomainHash, blockGHOSTDAGData *BlockGHOSTDAGData)
+	IsStaged() bool
+	Get(dbContext DBReader, blockHash *externalapi.DomainHash) (*BlockGHOSTDAGData, error)
 }

domain/consensus/model/interface_datastructures_headersselectedchainstore.go

@@ -5,8 +5,9 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // HeadersSelectedChainStore represents a store of the headers selected chain
 type HeadersSelectedChainStore interface {
 	Store
-	Stage(dbContext DBReader, stagingArea *StagingArea, chainChanges *externalapi.SelectedChainPath) error
-	IsStaged(stagingArea *StagingArea) bool
-	GetIndexByHash(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (uint64, error)
-	GetHashByIndex(dbContext DBReader, stagingArea *StagingArea, index uint64) (*externalapi.DomainHash, error)
+	Stage(dbContext DBReader,
+		chainChanges *externalapi.SelectedChainPath) error
+	IsStaged() bool
+	GetIndexByHash(dbContext DBReader, blockHash *externalapi.DomainHash) (uint64, error)
+	GetHashByIndex(dbContext DBReader, index uint64) (*externalapi.DomainHash, error)
 }

domain/consensus/model/interface_datastructures_headertipsstore.go

@@ -5,8 +5,8 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // HeaderSelectedTipStore represents a store of the headers selected tip
 type HeaderSelectedTipStore interface {
 	Store
-	Stage(stagingArea *StagingArea, selectedTip *externalapi.DomainHash)
-	IsStaged(stagingArea *StagingArea) bool
-	HeadersSelectedTip(dbContext DBReader, stagingArea *StagingArea) (*externalapi.DomainHash, error)
-	Has(dbContext DBReader, stagingArea *StagingArea) (bool, error)
+	Stage(selectedTip *externalapi.DomainHash)
+	IsStaged() bool
+	HeadersSelectedTip(dbContext DBReader) (*externalapi.DomainHash, error)
+	Has(dbContext DBReader) (bool, error)
 }

domain/consensus/model/interface_datastructures_multisetstore.go

@@ -5,8 +5,8 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // MultisetStore represents a store of Multisets
 type MultisetStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, multiset Multiset)
-	IsStaged(stagingArea *StagingArea) bool
-	Get(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (Multiset, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
+	Stage(blockHash *externalapi.DomainHash, multiset Multiset)
+	IsStaged() bool
+	Get(dbContext DBReader, blockHash *externalapi.DomainHash) (Multiset, error)
+	Delete(blockHash *externalapi.DomainHash)
 }

domain/consensus/model/interface_datastructures_pruningstore.go

@@ -5,15 +5,15 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // PruningStore represents a store for the current pruning state
 type PruningStore interface {
 	Store
-	StagePruningPoint(stagingArea *StagingArea, pruningPointBlockHash *externalapi.DomainHash)
-	StagePruningPointCandidate(stagingArea *StagingArea, candidate *externalapi.DomainHash)
-	IsStaged(stagingArea *StagingArea) bool
-	PruningPointCandidate(dbContext DBReader, stagingArea *StagingArea) (*externalapi.DomainHash, error)
-	HasPruningPointCandidate(dbContext DBReader, stagingArea *StagingArea) (bool, error)
-	PruningPoint(dbContext DBReader, stagingArea *StagingArea) (*externalapi.DomainHash, error)
-	HasPruningPoint(dbContext DBReader, stagingArea *StagingArea) (bool, error)
+	StagePruningPoint(pruningPointBlockHash *externalapi.DomainHash)
+	StagePruningPointCandidate(candidate *externalapi.DomainHash)
+	IsStaged() bool
+	PruningPointCandidate(dbContext DBReader) (*externalapi.DomainHash, error)
+	HasPruningPointCandidate(dbContext DBReader) (bool, error)
+	PruningPoint(dbContext DBReader) (*externalapi.DomainHash, error)
+	HasPruningPoint(dbContext DBReader) (bool, error)
 
-	StageStartUpdatingPruningPointUTXOSet(stagingArea *StagingArea)
+	StageStartUpdatingPruningPointUTXOSet()
 	HadStartedUpdatingPruningPointUTXOSet(dbContext DBWriter) (bool, error)
 	FinishUpdatingPruningPointUTXOSet(dbContext DBWriter) error
 	UpdatePruningPointUTXOSet(dbContext DBWriter, utxoSetIterator externalapi.ReadOnlyUTXOSetIterator) error

domain/consensus/model/interface_datastructures_reachabilitydatastore.go

@@ -5,10 +5,10 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // ReachabilityDataStore represents a store of ReachabilityData
 type ReachabilityDataStore interface {
 	Store
-	StageReachabilityData(stagingArea *StagingArea, blockHash *externalapi.DomainHash, reachabilityData ReachabilityData)
-	StageReachabilityReindexRoot(stagingArea *StagingArea, reachabilityReindexRoot *externalapi.DomainHash)
-	IsStaged(stagingArea *StagingArea) bool
-	ReachabilityData(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (ReachabilityData, error)
-	HasReachabilityData(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
-	ReachabilityReindexRoot(dbContext DBReader, stagingArea *StagingArea) (*externalapi.DomainHash, error)
+	StageReachabilityData(blockHash *externalapi.DomainHash, reachabilityData ReachabilityData)
+	StageReachabilityReindexRoot(reachabilityReindexRoot *externalapi.DomainHash)
+	IsAnythingStaged() bool
+	ReachabilityData(dbContext DBReader, blockHash *externalapi.DomainHash) (ReachabilityData, error)
+	HasReachabilityData(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
+	ReachabilityReindexRoot(dbContext DBReader) (*externalapi.DomainHash, error)
 }

domain/consensus/model/interface_datastructures_utxodiffstore.go

@@ -5,10 +5,10 @@ import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 // UTXODiffStore represents a store of UTXODiffs
 type UTXODiffStore interface {
 	Store
-	Stage(stagingArea *StagingArea, blockHash *externalapi.DomainHash, utxoDiff externalapi.UTXODiff, utxoDiffChild *externalapi.DomainHash)
-	IsStaged(stagingArea *StagingArea) bool
-	UTXODiff(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (externalapi.UTXODiff, error)
-	UTXODiffChild(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error)
-	HasUTXODiffChild(dbContext DBReader, stagingArea *StagingArea, blockHash *externalapi.DomainHash) (bool, error)
-	Delete(stagingArea *StagingArea, blockHash *externalapi.DomainHash)
+	Stage(blockHash *externalapi.DomainHash, utxoDiff externalapi.UTXODiff, utxoDiffChild *externalapi.DomainHash)
+	IsStaged() bool
+	UTXODiff(dbContext DBReader, blockHash *externalapi.DomainHash) (externalapi.UTXODiff, error)
+	UTXODiffChild(dbContext DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error)
+	HasUTXODiffChild(dbContext DBReader, blockHash *externalapi.DomainHash) (bool, error)
+	Delete(blockHash *externalapi.DomainHash)
 }