80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
package pipeline
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import (
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"context"
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"github.com/wormhole-foundation/wormhole-explorer/pipeline/internal/metrics"
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"github.com/wormhole-foundation/wormhole-explorer/pipeline/topic"
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"github.com/wormhole-foundation/wormhole-explorer/pipeline/watcher"
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"github.com/wormhole-foundation/wormhole/sdk/vaa"
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"go.uber.org/zap"
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)
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// Publisher definition.
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type Publisher struct {
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logger *zap.Logger
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pushFunc topic.PushFunc
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repository *Repository
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p2pNetwork string
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txHashHandler *TxHashHandler
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metrics metrics.Metrics
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}
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// NewPublisher creates a new publisher for vaa with parse configuration.
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func NewPublisher(pushFunc topic.PushFunc, metrics metrics.Metrics, repository *Repository, p2pNetwork string, txHashHandler *TxHashHandler, logger *zap.Logger) *Publisher {
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return &Publisher{
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logger: logger,
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repository: repository,
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pushFunc: pushFunc,
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p2pNetwork: p2pNetwork,
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txHashHandler: txHashHandler,
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metrics: metrics,
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}
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}
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// Publish sends a Event for the vaa that has parse configuration defined.
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func (p *Publisher) Publish(ctx context.Context, e *watcher.Event) {
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// create a Event.
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event := topic.Event{
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ID: e.ID,
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ChainID: e.ChainID,
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EmitterAddress: e.EmitterAddress,
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Sequence: e.Sequence,
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GuardianSetIndex: e.GuardianSetIndex,
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Vaa: e.Vaa,
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IndexedAt: e.IndexedAt,
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Timestamp: e.Timestamp,
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UpdatedAt: e.UpdatedAt,
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TxHash: e.TxHash,
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Version: e.Version,
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Revision: e.Revision,
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Digest: e.Digest,
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Overwrite: e.DuplicatedFixed,
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}
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// In some scenarios the fly component that inserts the VAA documents does not have the txhash field available,
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// since this field does not arrive in the gossip network messages of type vaa, but arrives in the messages
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// of type observation and there may be a race condition between the processing of observations and the vaa.
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// For this reason, an attempt is made at this point to complete this vaa with the txhash.
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if event.TxHash == "" {
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// discard pyth messages
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isPyth := vaa.ChainIDPythNet == vaa.ChainID(e.ChainID)
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if !isPyth {
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// increment the metric for the number of vaas without txhash
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p.metrics.IncVaaWithoutTxHash(e.ChainID)
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// add the event to the txhash handler.
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// the handler will try to get the txhash for the vaa
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// and publish the event with the txhash.
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p.txHashHandler.AddVaaFixItem(event)
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return
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}
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}
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// push messages to topic.
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err := p.pushFunc(ctx, &event)
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if err != nil {
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p.logger.Error("can not push event to topic", zap.Error(err), zap.String("event", event.ID))
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}
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}
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