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fix: checkpoint

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leookun
2026-08-07 02:19:29 +08:00
parent 225de8bb85
commit a7f9494828
6 changed files with 196 additions and 22 deletions
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internal/backend/forwarder/checkpoint_blobs.go
+40 -5
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@@ -94,6 +94,13 @@ func (service *Service) queueCheckpointProjection(stream *ActiveStream, projecti
if service.checkpointProjectionReady(stream) {
return service.publishReadyCheckpoint(stream)
}
// Keep the latest live UI state ahead of an immediate client abort. Blob writes are
// ordered before this snapshot; acknowledgements still gate terminal completion.
if completion == nil {
if err := service.publishPendingCheckpoint(stream); err != nil {
return service.finishAfterCheckpointSyncFailure(stream, fmt.Errorf("publish pending checkpoint: %w", err))
}
}
service.scheduleStreamTimer(
stream,
providerTimerKey(streamTimerCheckpointBlobs, ""),
@@ -106,6 +113,31 @@ func (service *Service) queueCheckpointProjection(stream *ActiveStream, projecti
return nil
}
func (service *Service) publishPendingCheckpoint(stream *ActiveStream) error {
if service == nil || stream == nil {
return nil
}
stream.mu.Lock()
pending := stream.PendingCheckpoint
if pending == nil || pending.Published {
stream.mu.Unlock()
return nil
}
pending.Published = true
state := pending.State
stream.UpdatedAt = time.Now().UTC()
stream.mu.Unlock()
if err := service.broker.Publish(stream.RequestID, StreamEvent{Message: buildCheckpointMessage(state)}); err != nil {
stream.mu.Lock()
if stream.PendingCheckpoint == pending {
pending.Published = false
}
stream.mu.Unlock()
return err
}
return nil
}
func (service *Service) checkpointProjectionReady(stream *ActiveStream) bool {
if stream == nil {
return false
@@ -176,15 +208,18 @@ func (service *Service) publishReadyCheckpoint(stream *ActiveStream) error {
stream.PendingCheckpoint = nil
state := pending.State
completion := clonePendingTurnCompletion(pending.Completion)
published := pending.Published
stream.UpdatedAt = time.Now().UTC()
stream.mu.Unlock()
clearStreamTimer(stream, providerTimerKey(streamTimerCheckpointBlobs, ""))
if err := service.broker.Publish(stream.RequestID, StreamEvent{Message: buildCheckpointMessage(state)}); err != nil {
if completion != nil {
log.Printf("forwarder checkpoint publish skipped before successful terminal request_id=%s err=%v", stream.RequestID, err)
return service.finishSuccessfulTurnAfterCheckpoint(stream, *completion)
if !published {
if err := service.broker.Publish(stream.RequestID, StreamEvent{Message: buildCheckpointMessage(state)}); err != nil {
if completion != nil {
log.Printf("forwarder checkpoint publish skipped before successful terminal request_id=%s err=%v", stream.RequestID, err)
return service.finishSuccessfulTurnAfterCheckpoint(stream, *completion)
}
return err
}
return err
}
if completion != nil {
return service.finishSuccessfulTurnAfterCheckpoint(stream, *completion)