start work on listening logic

app/rpc/manager.go

@@ -223,12 +223,12 @@ func (m *Manager) notifyTXsChanged(virtualChangeSet *externalapi.VirtualChangeSe
 	onEnd := logger.LogAndMeasureExecutionTime(log, "RPCManager.NotifyTXsChanged")
 	defer onEnd()
 
-	_, err := m.context.TXIndex.Update(virtualChangeSet)
+	txIndexChanges, err := m.context.TXIndex.Update(virtualChangeSet)
 	if err != nil {
 		return err
 	}
 
-	return nil
+	return m.context.NotifyTXAcceptanceChange(txIndexChanges)
 }
 
 func (m *Manager) notifyPruningPointUTXOSetOverride() error {

app/rpc/rpccontext/notificationmanager.go

@@ -4,6 +4,7 @@ import (
 	"sync"
 
 	"github.com/kaspanet/kaspad/domain/dagconfig"
+	"github.com/kaspanet/kaspad/domain/txindex"
 
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
@@ -43,6 +44,8 @@ type NotificationListener struct {
 	propagateNewBlockTemplateNotifications                      bool
 
 	propagateUTXOsChangedNotificationAddresses                  map[utxoindex.ScriptPublicKeyString]*UTXOsChangedNotificationAddress
+	propagateAddressesTxsNotifications           		    TXsConfirmationChangedNotificationHolder
+	propagateTxsConfirmationChhangedNotifications               TXsConfirmationChangedNotificationHolder
 	includeAcceptedTransactionIDsInVirtualSelectedParentChainChangedNotifications bool
 }
 
@@ -199,6 +202,29 @@ func (nm *NotificationManager) NotifyFinalityConflictResolved(notification *appm
 	return nil
 }
 
+// NotifyUTXOsChanged notifies the notification manager that UTXOs have been changed
+func (nm *NotificationManager) NotifyTXAcceptanceChange(txChanges *txindex.TXAcceptanceChange) error {
+	nm.RLock()
+	defer nm.RUnlock()
+
+	for router, listener := range nm.listeners {
+		if listener.propagateTXsConfirmationChangedNotifications {
+			// Filter utxoChanges and create a notification
+			notification, err := listener.convertUTXOChangesToUTXOsChangedNotification(utxoChanges)
+			if err != nil {
+				return err
+			}
+
+			// Enqueue the notification
+			err = router.OutgoingRoute().MaybeEnqueue(notification)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
 // NotifyUTXOsChanged notifies the notification manager that UTXOs have been changed
 func (nm *NotificationManager) NotifyUTXOsChanged(utxoChanges *utxoindex.UTXOChanges) error {
 	nm.RLock()
@@ -367,6 +393,26 @@ func (nm *NotificationManager) PropagateUTXOsChangedNotifications(nl *Notificati
 	}
 }
 
+// PropagateUTXOsChangedNotifications instructs the listener to send UTXOs changed notifications
+// to the remote listener for the given addresses. Subsequent calls instruct the listener to
+// send UTXOs changed notifications for those addresses along with the old ones. Duplicate addresses
+// are ignored.
+func (nm *NotificationManager) PropagateTXsConfirmationChangedNotifications(nl *NotificationListener, addresses []*UTXOsChangedNotificationAddress) {
+	// Apply a write-lock since the internal listener address map is modified
+	nm.Lock()
+	defer nm.Unlock()
+
+	if !nl.propagateUTXOsChangedNotifications {
+		nl.propagateUTXOsChangedNotifications = true
+		nl.propagateUTXOsChangedNotificationAddresses =
+			make(map[utxoindex.ScriptPublicKeyString]*UTXOsChangedNotificationAddress, len(addresses))
+	}
+
+	for _, address := range addresses {
+		nl.propagateUTXOsChangedNotificationAddresses[address.ScriptPublicKeyString] = address
+	}
+}
+
 // StopPropagatingUTXOsChangedNotifications instructs the listener to stop sending UTXOs
 // changed notifications to the remote listener for the given addresses. Addresses for which
 // notifications are not currently sent are ignored.

app/rpc/rpccontext/tx_changed.go

@@ -0,0 +1,85 @@
+package rpccontext
+
+import (
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/txindex"
+)
+
+// TXsConfirmationChanged represents information for the  TXsConfirmationChanged listener.
+// This type is meant to be used in TXsChanged notifications
+type TXsConfirmationChangedNotificationState struct {
+	RequiredConfirmations uint32
+	IncludePending bool
+	RegisteredTxsToBlueScore txindex.TxIDsToBlueScores
+	UnregesiteredTxsBlueScore map[externalapi.DomainTransactionID]uint64 //this is bluescore when txid was either a) inserted into listener, or b) removed from listener
+}
+
+func (ctx *Context) NewTXsConfirmationChangedNotificationState(txIds []*externalapi.DomainTransactionID, requiredConfirmations uint32, 
+	includePending bool) (*TXsConfirmationChangedNotificationState, error) {
+	registeredTxsToBlueScore, NotFound, err := ctx.TXIndex.GetTXsBlueScores(txIds)
+	if err != nil {
+		return nil, err
+	}
+	virtualInfo, err := ctx.Domain.Consensus().GetVirtualInfo()
+	if err != nil {
+		return nil, err
+	}
+
+	unregesiteredTxsBlueScore := make(txindex.TxIDsToBlueScores, len(NotFound))
+	for _, txID := range NotFound {
+		unregesiteredTxsBlueScore[*txID] = virtualInfo.BlueScore
+	}
+	return &TXsConfirmationChangedNotificationState{
+		RequiredConfirmations: requiredConfirmations,
+		IncludePending: includePending,
+		RegisteredTxsToBlueScore: registeredTxsToBlueScore,
+		UnregesiteredTxsBlueScore: unregesiteredTxsBlueScore,
+	}, nil
+}
+
+func (tcc *TXsConfirmationChangedNotificationState) updateStateAndExtractConfirmations(txAcceptanceChange *txindex.TXAcceptanceChange) (
+	pending []*appmessage.TxIDConfirmationsPair, confirmed []*appmessage.TxIDConfirmationsPair, unconfirmed []*appmessage.TxIDConfirmationsPair) {
+
+	pending = make([]*appmessage.TxIDConfirmationsPair, 0)
+	confirmed = make([]*appmessage.TxIDConfirmationsPair, 0)
+	unconfirmed = make([]*appmessage.TxIDConfirmationsPair, 0)
+
+	for txID := range txAcceptanceChange.Removed {
+		_, found := tcc.RegisteredTxsToBlueScore[txID]
+		if found  {
+			delete(tcc.RegisteredTxsToBlueScore, txID)
+			tcc.UnregesiteredTxsBlueScore[txID] = txAcceptanceChange.BlueScore
+		}
+	}
+	for txID := range txAcceptanceChange.Added {
+		_, found := tcc.UnregesiteredTxsBlueScore[txID]
+		if !found  {
+			delete(tcc.UnregesiteredTxsBlueScore, txID)
+			tcc.RegisteredTxsToBlueScore[txID] = txAcceptanceChange.BlueScore
+		} 
+	}
+
+	for txID, txBluescore := range tcc.RegisteredTxsToBlueScore {
+		confirmations := txAcceptanceChange.BlueScore - txBluescore 
+		if confirmations >= tcc.RequiredConfirmations {
+			confirmed = append(confirmed, &appmessage.TxIDConfirmationsPair{TxID: txID, Confirmations: confirmations})
+		} else if tcc.IncludePending {
+			pending = append(pending, &appmessage.TxIDConfirmationsPair{TxID: txID, Confirmations: confirmations})
+		}
+	}
+
+	for txID, txBluescore := range tcc.UnregesiteredTxsBlueScore {
+		unconfirmations := txAcceptanceChange.BlueScore - txBluescore 
+		if unconfirmations >= tcc.RequiredConfirmations {
+			unconfirmed = append(unconfirmed, &appmessage.TxIDConfirmationsPair{TxID: txID, Confirmations: unconfirmations})
+			delete(tcc.UnregesiteredTxsBlueScore, txID)
+		}
+	}
+
+	if tcc.IncludePending {
+		return pending, confirmed, unconfirmed
+	}
+
+	return nil, confirmed, unconfirmed
+}

app/rpc/rpchandlers/modify_notifying_addresses_txs.go

@@ -0,0 +1,49 @@
+package appmessage
+
+// ModifyNotifyingAddressesTxsRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type ModifyNotifyingAddressesTxsRequestMessage struct {
+	baseMessage
+	AddAddresses          []string
+	RemoveAddresses       []string
+	RequiredConfirmations uint32
+	IncludePending        bool
+	IncludeSending        bool
+	IncludeReceiving      bool
+}
+
+// Command returns the protocol command string for the message
+func (msg *ModifyNotifyingAddressesTxsRequestMessage) Command() MessageCommand {
+	return CmdModifyNotifyingAddressesTxsRequestMessage
+}
+
+// NewModifyNotifyingAddressesTxsRequestMessage returns a instance of the message
+func NewModifyNotifyingAddressesTxsRequestMessage(addAddresses []string, removeAddresses []string,
+	requiredConfirmations uint32, includePending bool, includeSending bool,
+	includeReceiving bool) *ModifyNotifyingAddressesTxsRequestMessage {
+	return &ModifyNotifyingAddressesTxsRequestMessage{
+		AddAddresses:          addAddresses,
+		RemoveAddresses:       removeAddresses,
+		RequiredConfirmations: requiredConfirmations,
+		IncludePending:        includePending,
+		IncludeSending:        includeSending,
+		IncludeReceiving:      includeReceiving,
+	}
+}
+
+// ModifyNotifyingAddressesTxsResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type ModifyNotifyingAddressesTxsResponseMessage struct {
+	baseMessage
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *ModifyNotifyingAddressesTxsResponseMessage) Command() MessageCommand {
+	return CmdModifyNotifyingAddressesTxsResponseMessage
+}
+
+// NewModifyNotifyingAddressesTxsResponseMessage returns a instance of the message
+func NewModifyNotifyingAddressesTxsResponseMessage() *NotifyAddressesTxsResponseMessage {
+	return &NotifyAddressesTxsResponseMessage{}
+}

app/rpc/rpchandlers/modify_notifying_txs_confirmation_changed.go

@@ -0,0 +1,44 @@
+package appmessage
+
+// ModifyNotifyingTxsConfirmationChangedRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type ModifyNotifyingTxsConfirmationChangedRequestMessage struct {
+	baseMessage
+	AddTxIDs              []string
+	RemoveTxIDs           []string
+	RequiredConfirmations uint32
+	IncludePending        bool
+}
+
+// Command returns the protocol command string for the message
+func (msg *ModifyNotifyingTxsConfirmationChangedRequestMessage) Command() MessageCommand {
+	return CmdModifyNotifyingTxsConfirmationChangedRequestMessage
+}
+
+// NewModifyNotifyingTxsConfirmationChangedRequestMessage returns a instance of the message
+func NewModifyNotifyingTxsConfirmationChangedRequestMessage(addTxIDs []string, removeTxIDs []string,
+	requiredConfirmations uint32, includePending bool) *ModifyNotifyingTxsConfirmationChangedRequestMessage {
+	return &ModifyNotifyingTxsConfirmationChangedRequestMessage{
+		AddTxIDs:              addTxIDs,
+		RemoveTxIDs:           removeTxIDs,
+		RequiredConfirmations: requiredConfirmations,
+		IncludePending:        includePending,
+	}
+}
+
+// ModifyNotifyingTxsConfirmationChangedResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type ModifyNotifyingTxsConfirmationChangedResponseMessage struct {
+	baseMessage
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *ModifyNotifyingTxsConfirmationChangedResponseMessage) Command() MessageCommand {
+	return CmdModifyNotifyingTxsConfirmationChangedResponseMessage
+}
+
+// NewModifyNotifyingTxsChangedResponseMessage returns a instance of the message
+func NewModifyNotifyingTxsChangedResponseMessage() *NotifyTxsConfirmationChangedResponseMessage {
+	return &NotifyTxsConfirmationChangedResponseMessage{}
+}

app/rpc/rpchandlers/notify_addresses_txs.go

@@ -0,0 +1,87 @@
+package appmessage
+
+// NotifyAddressesTxsRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyAddressesTxsRequestMessage struct {
+	baseMessage
+	Addresses             []string
+	RequiredConfirmations uint32
+	IncludePending        bool
+	IncludeSending        bool
+	IncludeReceiving      bool
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyAddressesTxsRequestMessage) Command() MessageCommand {
+	return CmdNotifyAddressesTxsRequestMessage
+}
+
+// NewNotifyAddressesTxsRequestMessage returns a instance of the message
+func NewNotifyAddressesTxsRequestMessage(addresses []string, requiredConfirmations uint32,
+	includePending bool, includeSending bool, includeReceiving bool) *NotifyAddressesTxsRequestMessage {
+	return &NotifyAddressesTxsRequestMessage{
+		Addresses:             addresses,
+		RequiredConfirmations: requiredConfirmations,
+		IncludePending:        includePending,
+		IncludeSending:        includeSending,
+		IncludeReceiving:      includeReceiving,
+	}
+}
+
+// NotifyAddressesTxsResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyAddressesTxsResponseMessage struct {
+	baseMessage
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyAddressesTxsResponseMessage) Command() MessageCommand {
+	return CmdNotifyAddressesTxsResponseMessage
+}
+
+// NewNotifyAddressesTxsResponseMessage returns a instance of the message
+func NewNotifyAddressesTxsResponseMessage() *NotifyAddressesTxsResponseMessage {
+	return &NotifyAddressesTxsResponseMessage{}
+}
+
+// AddressesTxsNotificationMessage is an appmessage corresponding to
+// its respective RPC message
+type AddressesTxsNotificationMessage struct {
+	baseMessage
+	RequiredConfirmations uint32
+	Pending               *TxEntriesByAddresses
+	Confirmed             *TxEntriesByAddresses
+	Unconfirmed           *TxEntriesByAddresses
+}
+
+// Command returns the protocol command string for the message
+func (msg *AddressesTxsNotificationMessage) Command() MessageCommand {
+	return CmdAddressesTxsNotificationMessage
+}
+
+// NewAddressesTxsNotificationMessage returns a instance of the message
+func NewAddressesTxsNotificationMessage(requiredConfirmations uint32, pending *TxEntriesByAddresses,
+	confirmed *TxEntriesByAddresses, unconfirmed *TxEntriesByAddresses) *AddressesTxsNotificationMessage {
+	return &AddressesTxsNotificationMessage{
+		RequiredConfirmations: requiredConfirmations,
+		Pending:               pending,
+		Confirmed:             confirmed,
+		Unconfirmed:           unconfirmed,
+	}
+}
+
+// TxEntriesByAddresses is an appmessage corresponding to
+// its respective RPC message
+type TxEntriesByAddresses struct {
+	Sent     []*TxEntryByAddress
+	Received []*TxEntryByAddress
+}
+
+// TxEntryByAddress is an appmessage corresponding to
+// its respective RPC message
+type TxEntryByAddress struct {
+	Address       string
+	TxID          string
+	Confirmations uint32
+}

app/rpc/rpchandlers/notify_txs_confirmation_changed.go

@@ -0,0 +1,68 @@
+package appmessage
+
+// NotifyTxsConfirmationChangedRequestMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyTxsConfirmationChangedRequestMessage struct {
+	baseMessage
+	TxIDs                 []string
+	RequiredConfirmations uint32
+	IncludePending        bool
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyTxsConfirmationChangedRequestMessage) Command() MessageCommand {
+	return CmdNotifyTxsConfirmationChangedRequestMessage
+}
+
+// NewNotifyTxsConfirmationChangedRequestMessage returns a instance of the message
+func NewNotifyTxsConfirmationChangedRequestMessage(TxIDs []string, requiredConfirmations uint32,
+	includePending bool) *NotifyTxsConfirmationChangedRequestMessage {
+	return &NotifyTxsConfirmationChangedRequestMessage{
+		TxIDs:                 TxIDs,
+		RequiredConfirmations: requiredConfirmations,
+		IncludePending:        includePending,
+	}
+}
+
+// NotifyTxsConfirmationChangedResponseMessage is an appmessage corresponding to
+// its respective RPC message
+type NotifyTxsConfirmationChangedResponseMessage struct {
+	baseMessage
+	Error *RPCError
+}
+
+// Command returns the protocol command string for the message
+func (msg *NotifyTxsConfirmationChangedResponseMessage) Command() MessageCommand {
+	return CmdNotifyTxsConfirmationChangedResponseMessage
+}
+
+// NewNotifyTxsChangedResponseMessage returns a instance of the message
+func NewNotifyTxsChangedResponseMessage() *NotifyTxsConfirmationChangedResponseMessage {
+	return &NotifyTxsConfirmationChangedResponseMessage{}
+}
+
+// TxsConfirmationChangedNotificationMessage is an appmessage corresponding to
+// its respective RPC message
+type TxsConfirmationChangedNotificationMessage struct {
+	baseMessage
+	RequiredConfirmations uint32
+	Pending               []*TxIDConfirmationsPair
+	Confirmed             []*TxIDConfirmationsPair
+	UnconfirmedTxIds      []string
+}
+
+// Command returns the protocol command string for the message
+func (msg *TxsConfirmationChangedNotificationMessage) Command() MessageCommand {
+	return CmdTxsConfirmationChangedNotificationMessage
+}
+
+// NewTxsChangedNotificationMessage returns a instance of the message
+func NewTxsChangedNotificationMessage(requiredConfirmations uint32, pending []*TxIDConfirmationsPair,
+	confirmed []*TxIDConfirmationsPair, unconfirmedTxIds []string) *TxsConfirmationChangedNotificationMessage {
+	return &TxsConfirmationChangedNotificationMessage{
+		RequiredConfirmations: requiredConfirmations,
+		Pending:               pending,
+		Confirmed:             confirmed,
+		UnconfirmedTxIds:      unconfirmedTxIds,
+	}
+}

domain/txindex/txindex.go

@@ -187,7 +187,12 @@ func (ti *TXIndex) addTXIDs(selectedParentChainChanges *externalapi.SelectedChai
 		if err != nil {
 			return err
 		}
-		for i, acceptingBlock := range chainBlocksChunk {
+		for i, acceptingBlockHash := range chainBlocksChunk {
+			acceptingBlockHeader, err := ti.domain.Consensus().GetBlockHeader(acceptingBlockHash)
+			if err != nil {
+				return err
+			}
+			acceptingBlueScore := acceptingBlockHeader.BlueScore()
 			chainBlockAcceptanceData := chainBlocksAcceptanceData[i]
 			for _, blockAcceptanceData := range chainBlockAcceptanceData {
 				for j, transactionAcceptanceData := range blockAcceptanceData.TransactionAcceptanceData {
@@ -199,9 +204,9 @@ func (ti *TXIndex) addTXIDs(selectedParentChainChanges *externalapi.SelectedChai
 						transactionID := consensushashing.TransactionID(transactionAcceptanceData.Transaction)
 						ti.store.add(
 							*transactionID,
-							uint32(j),                     //index of including block where transaction is found
+							uint32(j),                     // index of including block where transaction is found
-							blockAcceptanceData.BlockHash, //this is the including block
+							blockAcceptanceData.BlockHash, // this is the including block
-							acceptingBlock,                //this is the accepting block
+							acceptingBlockHash,	       // this is the accepting block
 						)
 					}
 				}