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eth/downloader: flush state sync data before exit (#16280)

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This commit is contained in:
gary rong 2018-04-09 20:46:27 +08:00 committed by Felix Lange
parent 0fac705ed0
commit 1100e8ba63
2 changed files with 14 additions and 6 deletions
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18
eth/downloader/statesync.go
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@ -274,15 +274,21 @@ func (s *stateSync) Cancel() error {
// receive data from peers, rather those are buffered up in the downloader and
// pushed here async. The reason is to decouple processing from data receipt
// and timeouts.
func (s *stateSync) loop() error {
func (s *stateSync) loop() (err error) {
// Listen for new peer events to assign tasks to them
newPeer := make(chan *peerConnection, 1024)
peerSub := s.d.peers.SubscribeNewPeers(newPeer)
defer peerSub.Unsubscribe()
defer func() {
cerr := s.commit(true)
if err == nil {
err = cerr
}
}()
// Keep assigning new tasks until the sync completes or aborts
for s.sched.Pending() > 0 {
if err := s.commit(false); err != nil {
if err = s.commit(false); err != nil {
return err
}
s.assignTasks()
@ -307,14 +313,14 @@ func (s *stateSync) loop() error {
s.d.dropPeer(req.peer.id)
}
// Process all the received blobs and check for stale delivery
if err := s.process(req); err != nil {
if err = s.process(req); err != nil {
log.Warn("Node data write error", "err", err)
return err
}
req.peer.SetNodeDataIdle(len(req.response))
}
}
return s.commit(true)
return nil
}
func (s *stateSync) commit(force bool) error {
@ -323,7 +329,9 @@ func (s *stateSync) commit(force bool) error {
}
start := time.Now()
b := s.d.stateDB.NewBatch()
s.sched.Commit(b)
if written, err := s.sched.Commit(b); written == 0 || err != nil {
return err
}
if err := b.Write(); err != nil {
return fmt.Errorf("DB write error: %v", err)
}