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processors.go
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/
processors.go
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package io
import (
"io"
"github.com/stellar/go/support/errors"
)
type ChangeProcessor interface {
ProcessChange(change Change) error
}
type LedgerTransactionProcessor interface {
ProcessTransaction(transaction LedgerTransaction) error
}
func StreamLedgerTransactions(
txProcessor LedgerTransactionProcessor,
reader LedgerReader,
) error {
for {
tx, err := reader.Read()
if err == io.EOF {
return nil
}
if err != nil {
return errors.Wrap(err, "could not read transaction")
}
if err = txProcessor.ProcessTransaction(tx); err != nil {
return errors.Wrapf(
err,
"could not process transaction %v",
tx.Index,
)
}
}
}
func StreamChanges(
changeProcessor ChangeProcessor,
reader ChangeReader,
) error {
for {
change, err := reader.Read()
if err == io.EOF {
return nil
}
if err != nil {
return errors.Wrap(err, "could not read transaction")
}
if err = changeProcessor.ProcessChange(change); err != nil {
return errors.Wrap(
err,
"could not process change",
)
}
}
}