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https://github.com/kaspanet/kaspad.git
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5566aaf95a
* [NOD-1512] Implement UTXO set deserialization * [NOD-1512] Remove redundant file * [NOD-1512] Don't use big endian for serialization * [NOD-1512] Use Read/Write element * [NOD-1512] Unexport ReadElement * [NOD-1512] Fix StageVirtualUTXOSet * [NOD-1512] Get rid of dagParams in consensusStateManager * [NOD-1512] Get rid of dagParams in consensusStateManager
85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
package utxoalgebra
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import (
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"reflect"
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"github.com/kaspanet/kaspad/domain/consensus/utils/consensusserialization"
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"github.com/kaspanet/kaspad/domain/consensus/utils/transactionhelper"
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"github.com/kaspanet/kaspad/domain/consensus/model"
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"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
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"github.com/pkg/errors"
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)
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// DiffClone returns a new UTXODiff which is identical to the given diff
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func DiffClone(diff *model.UTXODiff) *model.UTXODiff {
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clone := &model.UTXODiff{
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ToAdd: collectionClone(diff.ToAdd),
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ToRemove: collectionClone(diff.ToRemove),
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}
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return clone
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}
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// DiffAddTransaction modifies the provided utxoDiff with provided transaction.
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func DiffAddTransaction(utxoDiff *model.UTXODiff, transaction *externalapi.DomainTransaction, blockBlueScore uint64) error {
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for _, input := range transaction.Inputs {
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err := diffRemoveEntry(utxoDiff, &input.PreviousOutpoint, input.UTXOEntry)
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if err != nil {
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return err
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}
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}
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isCoinbase := transactionhelper.IsCoinBase(transaction)
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for i, output := range transaction.Outputs {
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outpoint := &externalapi.DomainOutpoint{
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TransactionID: *consensusserialization.TransactionID(transaction),
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Index: uint32(i),
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}
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entry := &externalapi.UTXOEntry{
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Amount: output.Value,
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ScriptPublicKey: output.ScriptPublicKey,
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BlockBlueScore: blockBlueScore,
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IsCoinbase: isCoinbase,
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}
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err := diffAddEntry(utxoDiff, outpoint, entry)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func diffAddEntry(diff *model.UTXODiff, outpoint *externalapi.DomainOutpoint, entry *externalapi.UTXOEntry) error {
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if collectionContainsWithBlueScore(diff.ToRemove, outpoint, entry.BlockBlueScore) {
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collectionRemove(diff.ToRemove, outpoint)
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} else if _, exists := diff.ToAdd[*outpoint]; exists {
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return errors.Errorf("AddEntry: Cannot add outpoint %s twice", outpoint)
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} else {
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collectionAdd(diff.ToAdd, outpoint, entry)
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}
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return nil
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}
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func diffRemoveEntry(diff *model.UTXODiff, outpoint *externalapi.DomainOutpoint, entry *externalapi.UTXOEntry) error {
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if collectionContainsWithBlueScore(diff.ToAdd, outpoint, entry.BlockBlueScore) {
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collectionRemove(diff.ToAdd, outpoint)
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} else if _, exists := diff.ToRemove[*outpoint]; exists {
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return errors.Errorf("removeEntry: Cannot remove outpoint %s twice", outpoint)
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} else {
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collectionAdd(diff.ToRemove, outpoint, entry)
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}
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return nil
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}
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func diffEqual(this *model.UTXODiff, other *model.UTXODiff) bool {
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if this == nil || other == nil {
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return this == other
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}
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return reflect.DeepEqual(this.ToAdd, other.ToAdd) &&
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reflect.DeepEqual(this.ToRemove, other.ToRemove)
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}
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