Sean Kane 0fbc386c55 Include transient and speculative WFT events in GetWorkflowExecutionHistoryResponse (#9325) ...

## What changed?

Re-does #9138 which was incidentally merged.

Include transient and speculative WFT events in
`GetWorkflowExecutionHistoryReponse` response, unless UI or CLI made
request.

* Adds `transient_or_speculative_events` back to
`GetMutableStateResponse`
* Reserve `transient_workflow_task` in `HisotryCOntinuation` token
* Add validation helpers
* Add query-compare-query for transient events at request start and end

Re-implements #7732

## Why?
Fix "premature end of stream" errors when workers request history after
cache eviction w/ transient/speculative workflow tasks present. This
adds transient & speculative WFT events in `GetWorkflowExecutionHistory`
(already in `PollWorkflowTask`). Worker cache eviction w/ speculative
workflow tasks causes the expected and actual event counts to be
different. #7732 passed transient events through continuation tokens,
which could become stale during pagination. This PR implements mutable
state querying at both start and end of pagination and compares
transient event IDs to detect if WFT state changed during pagination and
return a retryable error.

## How did you test it?
- [X] built
- [X] run locally and tested manually
- [X] covered by existing tests
- [ ] added new unit test(s)
- [ ] added new functional test(s)

## Potential risks
Same risks from #7732

2026-02-19 15:24:21 -07:00

..

message.go-helpers.pb.go

Remove license header from every file (#7689)

2025-05-01 18:50:21 -07:00

message.pb.go

Include transient and speculative WFT events in GetWorkflowExecutionHistoryResponse (#9325)

2026-02-19 15:24:21 -07:00