52 lines
2.1 KiB
Markdown
52 lines
2.1 KiB
Markdown
---
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model: openai/gpt-5.6-sol
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service: opencode
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timestamp: 2026-08-13T20:24:02Z
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git_ref: 12b0d66e
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diff_cmd: git diff HEAD~1..HEAD
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---
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The user asked to continue the paired piker broadcast-consumer work after
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Tractor PR 490 stabilization. The next item was to stop cached feed callers
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from mutating or consuming shared `Feed`/`Flume` quote-stream roots, then
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review, verify and prepare a commit boundary.
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> `git diff HEAD~1..HEAD -- piker/data/feed.py`
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Changed `maybe_open_feed()` so the cached `Feed` exclusively owns provider
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root streams and every caller, including the first cache owner, receives a
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caller-local `Feed`/`Flume` view backed by one child subscription per provider.
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The cache identity now includes normalized full symbol shape and stream policy.
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Changed `Feed.open_multi_stream()` so every provider relay subscribes instead
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of directly consuming a shared stream, and synchronizes relay startup before
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yielding the merged channel. Each relay owns a cloned send channel so one
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provider EOC cannot terminate its siblings. The module-level relay returns its
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live child receiver through `TaskStatus` for typed retention and introspection.
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Documented `Feed.pause()`/`Feed.resume()` as provider-context-wide controls
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shared by local cache users.
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> `git diff HEAD~1..HEAD -- tests/test_feed_broadcast.py`
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Added real `Feed`, `Flume`, and Tractor broadcast regressions covering both
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cache-miss owner and cache-hit paths, one-provider-many-market mapping,
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multi-provider relay fan-out and startup, duplex controls, lexical child
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closure, sibling survival after provider EOC, cached-root immutability, and
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full cache-key differentiation.
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Verification output:
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```text
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... [100%]
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3 passed in 0.02s
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. [100%]
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1 passed in 0.01s
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```
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The second result is the existing EMS broadcast ownership regression. Ruff,
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E501, compilation and whitespace checks passed. Repeated adversarial review
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found and resolved shared `Feed.streams`, incomplete cache-key, fake-lifecycle,
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relay-startup and first-owner asymmetry issues; final review reported no
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findings.
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