mirror of https://github.com/poanetwork/gecko.git
82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package avalanche
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import (
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"errors"
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"fmt"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/ava-labs/gecko/ids"
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"github.com/ava-labs/gecko/snow/choices"
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"github.com/ava-labs/gecko/snow/consensus/snowstorm"
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"github.com/ava-labs/gecko/snow/engine/common/queue"
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"github.com/ava-labs/gecko/utils/logging"
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)
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type txParser struct {
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log logging.Logger
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numAccepted, numDropped prometheus.Counter
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vm DAGVM
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}
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func (p *txParser) Parse(txBytes []byte) (queue.Job, error) {
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tx, err := p.vm.ParseTx(txBytes)
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if err != nil {
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return nil, err
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}
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return &txJob{
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log: p.log,
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numAccepted: p.numAccepted,
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numDropped: p.numDropped,
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tx: tx,
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}, nil
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}
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type txJob struct {
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log logging.Logger
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numAccepted, numDropped prometheus.Counter
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tx snowstorm.Tx
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}
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func (t *txJob) ID() ids.ID { return t.tx.ID() }
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func (t *txJob) MissingDependencies() ids.Set {
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missing := ids.Set{}
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for _, dep := range t.tx.Dependencies() {
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if dep.Status() != choices.Accepted {
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missing.Add(dep.ID())
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}
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}
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return missing
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}
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func (t *txJob) Execute() error {
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if t.MissingDependencies().Len() != 0 {
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t.numDropped.Inc()
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return errors.New("attempting to accept a transaction with missing dependencies")
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}
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status := t.tx.Status()
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switch status {
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case choices.Unknown, choices.Rejected:
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t.numDropped.Inc()
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return fmt.Errorf("attempting to execute transaction with status %s", status)
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case choices.Processing:
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if err := t.tx.Verify(); err != nil {
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t.log.Debug("transaction %s failed verification during bootstrapping due to %s",
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t.tx.ID(), err)
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}
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t.numAccepted.Inc()
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if err := t.tx.Accept(); err != nil {
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t.log.Error("transaction %s failed to accept during bootstrapping due to %s",
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t.tx.ID(), err)
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return fmt.Errorf("failed to accept transaction in bootstrapping: %w", err)
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}
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}
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return nil
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}
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func (t *txJob) Bytes() []byte { return t.tx.Bytes() }
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