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Enhance checkpoint handling and error management in forwarder

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- Added flushing of assistant text during provider completion to ensure no output is lost on transport failure.
- Updated checkpoint blob synchronization tests to validate behavior under various conditions, including terminal and non-terminal states.
- Introduced new functions for managing checkpoint terminal actions, improving clarity and maintainability of the code.
- Implemented additional tests for imported blob handling and conversation state restoration, ensuring robustness in data integrity across operations.
This commit is contained in:
leookun
2026-08-10 22:25:37 +08:00
parent f1992b0cfe
commit 9373e57ebf
15 changed files with 884 additions and 190 deletions
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internal/backend/forwarder/projector.go
+20 -16
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@@ -326,20 +326,24 @@ func compactedPromptProjectionEntries(entries []HistoryEntry) []HistoryEntry {
latestToolCallID := latestCompletedToolCallIDForTurn(entries, compactionPayload.CurrentTurnSeq, compactionPayload.CurrentRequestID)
preservedIndexes = autoCompactionPreservedEntryIndexes(entries, compactionPayload.CurrentTurnSeq, compactionPayload.CurrentRequestID, latestToolCallID)
}
filtered := make([]HistoryEntry, 0, len(entries)-compactionIndex)
for index, entry := range entries {
if index < compactionIndex && isPromptReplayEntryKind(entry.Kind) {
if _, ok := preservedIndexes[index]; !ok {
continue
}
filtered := make([]HistoryEntry, 0, len(entries)-compactionIndex+len(preservedIndexes))
for index := 0; index < compactionIndex; index++ {
if !isPromptReplayEntryKind(entries[index].Kind) {
filtered = append(filtered, entries[index])
}
if index < compactionIndex {
if rewritten, ok := compactedProjectionPreservedEntry(entry); ok {
entry = rewritten
}
}
filtered = append(filtered, entries[compactionIndex])
for index := 0; index < compactionIndex; index++ {
if _, ok := preservedIndexes[index]; !ok || isCompactionSummaryKind(entries[index].Kind) {
continue
}
entry := entries[index]
if rewritten, ok := compactedProjectionPreservedEntry(entry); ok {
entry = rewritten
}
filtered = append(filtered, entry)
}
filtered = append(filtered, entries[compactionIndex+1:]...)
return filtered
}
@@ -575,7 +579,7 @@ func (projector *HistoryProjector) ProjectCheckpointProjection(conversation *Con
if err != nil {
return nil, err
}
state.Turns = turnIDs
state.Turns = append(cloneByteSlices(conversation.ImportedTurnIDs), turnIDs...)
replayMessages, err := projector.ProjectPromptReplay(conversation)
if err != nil {
return nil, err
@@ -1292,7 +1296,7 @@ func filterCheckpointPersistentToolReplay(messages []promptengine.Message) []pro
return filtered
}
func restoreImportedReplayUserMessages(messages []promptengine.Message, importedTurns [][]byte) []promptengine.Message {
func restoreImportedReplayUserMessages(messages []promptengine.Message, importedTurns [][]byte, blobs importedBlobStore) []promptengine.Message {
if len(messages) == 0 || len(importedTurns) == 0 {
return messages
}
@@ -1301,16 +1305,16 @@ func restoreImportedReplayUserMessages(messages []promptengine.Message, imported
if len(rawTurn) == 0 {
continue
}
turn := &agentv1.ConversationTurnStructure{}
if err := proto.Unmarshal(rawTurn, turn); err != nil {
turn, _, err := decodeImportedTurn(rawTurn, blobs)
if err != nil || turn == nil {
continue
}
agentTurn := turn.GetAgentConversationTurn()
if agentTurn == nil || len(agentTurn.GetUserMessage()) == 0 {
continue
}
userMessage := &agentv1.UserMessage{}
if err := proto.Unmarshal(agentTurn.GetUserMessage(), userMessage); err != nil {
userMessage, err := decodeImportedUserMessage(agentTurn.GetUserMessage(), blobs)
if err != nil {
continue
}
replay, ok := promptengine.BuildUserMessageReplayMessage(userMessage)