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group_processors.go
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/
group_processors.go
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package ingest
import (
"context"
"time"
"github.com/stellar/go/ingest"
"github.com/stellar/go/services/horizon/internal/db2/history"
"github.com/stellar/go/services/horizon/internal/ingest/processors"
"github.com/stellar/go/support/db"
"github.com/stellar/go/support/errors"
"github.com/stellar/go/xdr"
)
type runDurations map[string]time.Duration
func (d runDurations) AddRunDuration(name string, startTime time.Time) {
d[name] += time.Since(startTime)
}
type groupChangeProcessors struct {
processors []horizonChangeProcessor
processorsRunDurations runDurations
}
func newGroupChangeProcessors(processors []horizonChangeProcessor) *groupChangeProcessors {
return &groupChangeProcessors{
processors: processors,
processorsRunDurations: make(map[string]time.Duration),
}
}
func (g groupChangeProcessors) Name() string {
return "groupChangeProcessors"
}
func (g groupChangeProcessors) ProcessChange(ctx context.Context, change ingest.Change) error {
for _, p := range g.processors {
startTime := time.Now()
if err := p.ProcessChange(ctx, change); err != nil {
return errors.Wrapf(err, "error in %T.ProcessChange", p)
}
g.processorsRunDurations.AddRunDuration(p.Name(), startTime)
}
return nil
}
func (g groupChangeProcessors) Commit(ctx context.Context) error {
for _, p := range g.processors {
startTime := time.Now()
if err := p.Commit(ctx); err != nil {
return errors.Wrapf(err, "error in %T.Commit", p)
}
g.processorsRunDurations.AddRunDuration(p.Name(), startTime)
}
return nil
}
type groupLoaders struct {
lazyLoaders []horizonLazyLoader
runDurations runDurations
stats map[string]history.LoaderStats
}
func newGroupLoaders(lazyLoaders []horizonLazyLoader) groupLoaders {
return groupLoaders{
lazyLoaders: lazyLoaders,
runDurations: make(map[string]time.Duration),
stats: make(map[string]history.LoaderStats),
}
}
func (g groupLoaders) Flush(ctx context.Context, session db.SessionInterface, execInTx bool) error {
if execInTx {
if err := session.Begin(ctx); err != nil {
return err
}
defer session.Rollback()
}
for _, loader := range g.lazyLoaders {
startTime := time.Now()
if err := loader.Exec(ctx, session); err != nil {
return errors.Wrapf(err, "error during lazy loader resolution, %T.Exec", loader)
}
name := loader.Name()
g.runDurations.AddRunDuration(name, startTime)
g.stats[name] = loader.Stats()
}
if execInTx {
if err := session.Commit(); err != nil {
return err
}
}
return nil
}
type groupTransactionProcessors struct {
processors []horizonTransactionProcessor
processorsRunDurations runDurations
transactionStatsProcessor *processors.StatsLedgerTransactionProcessor
tradeProcessor *processors.TradeProcessor
}
// build the group processor for all tx processors
// processors - list of processors this should include StatsLedgerTransactionProcessor and TradeProcessor
// transactionStatsProcessor - provide a direct reference to the stats processor that is in processors or nil,
//
// group processing will reset stats as needed
//
// tradeProcessor - provide a direct reference to the trades processor in processors or nil,
//
// so group processing will reset stats as needed
func newGroupTransactionProcessors(processors []horizonTransactionProcessor,
transactionStatsProcessor *processors.StatsLedgerTransactionProcessor,
tradeProcessor *processors.TradeProcessor,
) *groupTransactionProcessors {
return &groupTransactionProcessors{
processors: processors,
processorsRunDurations: make(map[string]time.Duration),
transactionStatsProcessor: transactionStatsProcessor,
tradeProcessor: tradeProcessor,
}
}
func (g groupTransactionProcessors) IsEmpty() bool {
return len(g.processors) == 0
}
func (g groupTransactionProcessors) ProcessTransaction(lcm xdr.LedgerCloseMeta, tx ingest.LedgerTransaction) error {
for _, p := range g.processors {
startTime := time.Now()
if err := p.ProcessTransaction(lcm, tx); err != nil {
return errors.Wrapf(err, "error in %T.ProcessTransaction", p)
}
g.processorsRunDurations.AddRunDuration(p.Name(), startTime)
}
return nil
}
func (g groupTransactionProcessors) Flush(ctx context.Context, session db.SessionInterface) error {
for _, p := range g.processors {
startTime := time.Now()
if err := p.Flush(ctx, session); err != nil {
return errors.Wrapf(err, "error in %T.Flush", p)
}
g.processorsRunDurations.AddRunDuration(p.Name(), startTime)
}
return nil
}
func (g *groupTransactionProcessors) ResetStats() {
g.processorsRunDurations = make(map[string]time.Duration)
if g.tradeProcessor != nil {
g.tradeProcessor.ResetStats()
}
if g.transactionStatsProcessor != nil {
g.transactionStatsProcessor.ResetStats()
}
}
type groupTransactionFilterers struct {
filterers []processors.LedgerTransactionFilterer
runDurations
droppedTransactions int64
}
func newGroupTransactionFilterers(filterers []processors.LedgerTransactionFilterer) *groupTransactionFilterers {
return &groupTransactionFilterers{
filterers: filterers,
runDurations: make(map[string]time.Duration),
}
}
func (g *groupTransactionFilterers) Name() string {
return "groupTransactionFilterers"
}
func (g *groupTransactionFilterers) FilterTransaction(ctx context.Context, tx ingest.LedgerTransaction) (bool, bool, error) {
filtersEnabled := false
for _, f := range g.filterers {
startTime := time.Now()
filterEnabled, include, err := f.FilterTransaction(ctx, tx)
if !filterEnabled {
continue
}
filtersEnabled = true
if err != nil {
return true, false, errors.Wrapf(err, "error in %T.FilterTransaction", f)
}
g.AddRunDuration(f.Name(), startTime)
if include {
return true, true, nil
}
}
if filtersEnabled {
g.droppedTransactions++
return true, false, nil
}
return false, true, nil
}
func (g *groupTransactionFilterers) ResetStats() {
g.droppedTransactions = 0
g.runDurations = make(map[string]time.Duration)
}