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core: avoid warning when loading the transaction journal

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Péter Szilágyi 2017-10-20 14:31:29 +03:00
parent 65738c1eb3
commit 0af1ab0c86
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1 changed files with 13 additions and 0 deletions
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13
core/tx_journal.go
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@ -31,6 +31,15 @@ import (
// into the journal, but no such file is currently open. // into the journal, but no such file is currently open.
var errNoActiveJournal = errors.New("no active journal") var errNoActiveJournal = errors.New("no active journal")
// devNull is a WriteCloser that just discards anything written into it. Its
// goal is to allow the transaction journal to write into a fake journal when
// loading transactions on startup without printing warnings due to no file
// being readt for write.
type devNull struct{}
func (*devNull) Write(p []byte) (n int, err error) { return len(p), nil }
func (*devNull) Close() error { return nil }
// txJournal is a rotating log of transactions with the aim of storing locally // txJournal is a rotating log of transactions with the aim of storing locally
// created transactions to allow non-executed ones to survive node restarts. // created transactions to allow non-executed ones to survive node restarts.
type txJournal struct { type txJournal struct {
@ -59,6 +68,10 @@ func (journal *txJournal) load(add func(*types.Transaction) error) error {
} }
defer input.Close() defer input.Close()
// Temporarilly discard any journal additions (don't double add on load)
journal.writer = new(devNull)
defer func() { journal.writer = nil }()
// Inject all transactions from the journal into the pool // Inject all transactions from the journal into the pool
stream := rlp.NewStream(input, 0) stream := rlp.NewStream(input, 0)
total, dropped := 0, 0 total, dropped := 0, 0