langgraph

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Author SHA1 Message Date

Author	SHA1	Message	Date
Nick Hollon	7505c73243	Revert "Terminate sync stream iterators on stream-end, not on root-terminal lifecycle" This reverts commit `bbc71c398b`.	2026-06-02 10:03:39 -04:00
Nick Hollon	bbc71c398b	Terminate sync stream iterators on stream-end, not on root-terminal lifecycle The sync stream controller pushed the terminal None sentinel into every subscription queue the instant it saw a root-namespace completed/failed lifecycle event. Any event the server emits after that (e.g. a direct-child subgraph lifecycle/tasks event that feeds thread.subgraphs) was then queued behind the None and never consumed, because iterators return on the first None. This surfaced as thread.subgraphs yielding no direct-child handles for a factory/deep-agent graph on the sync client while the async client worked. Align the sync controller with the async controller: terminate projection iterators when the shared stream ends (or on interrupt, signaled by the thread-stream), not on a mid-stream root-terminal event. Adds a regression test.	2026-06-01 22:42:33 -04:00

Nick Hollon

7505c73243

Revert "Terminate sync stream iterators on stream-end, not on root-terminal lifecycle"

This reverts commit bbc71c398b.

2026-06-02 10:03:39 -04:00

Nick Hollon

bbc71c398b

Terminate sync stream iterators on stream-end, not on root-terminal lifecycle

The sync stream controller pushed the terminal None sentinel into every subscription queue the instant it saw a root-namespace completed/failed lifecycle event. Any event the server emits after that (e.g. a direct-child subgraph lifecycle/tasks event that feeds thread.subgraphs) was then queued behind the None and never consumed, because iterators return on the first None. This surfaced as thread.subgraphs yielding no direct-child handles for a factory/deep-agent graph on the sync client while the async client worked.

Align the sync controller with the async controller: terminate projection iterators when the shared stream ends (or on interrupt, signaled by the thread-stream), not on a mid-stream root-terminal event. Adds a regression test.

2026-06-01 22:42:33 -04:00

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