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fix: release init waiters on replacement and same-thread re-entry - #348
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- Replacing a provider whose init is still running marks that attempt failed and wakes anyone waiting on it, the same as shutdown does. - set_provider_and_wait called from inside the provider's own init (e.g. a handler of an event it emits) raises instead of waiting on itself forever. Signed-off-by: Jose Colella <jose.colella@gusto.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Merge Risk: 🟡 Moderate · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 12.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 8 functions across 2 files. (1 skipped: 1… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description check The description directly explains both fixes: releasing waiters during provider replacement and preventing same-thread re-entry deadlocks. Title check The title clearly and concisely summarizes the two primary changes: releasing initialization waiters on provider replacement and handling same-thread re-entry. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 12.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 8 functions across 2 files. (1 skipped: 1 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #348 +/- ##
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Coverage 99.54% 99.54%
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Files 32 32
Lines 879 887 +8
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+ Hits 875 883 +8
Misses 4 4 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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🟢 Approval recommended
Static review identified no blocking issues, and both reported hangs have targeted regression coverage; tests were not executed.
No open issues 🎉
What changed in this PR
Fixes two initialization hangs in the Ruby SDK’s provider lifecycle tracking introduced by #345.
Changes:
- Releases waiters with an initialization error when an unfinished provider is replaced or the API resets.
- Rejects same-thread initialization re-entry instead of waiting indefinitely.
- Adds regression tests and updates type signatures for the new helpers.
| File | Description |
|---|---|
spec/specification/flag_evaluation_api_spec.rb |
Adds regression tests for replacement and same-thread re-entry. |
sig/open_feature/sdk/configuration.rbs |
Declares the new initialization helper methods. |
lib/open_feature/sdk/configuration.rb |
Tracks initialization threads, releases abandoned waiters, and guards against self-waiting. |
Review effort: Balanced
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Actionable comments posted: 1
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Inline comments:
Review comments at @lib/open_feature/sdk/configuration.rb:
- Line 242: Update init_provider to verify that its initialization attempt
completed successfully before dispatching PROVIDER_READY or returning to a
synchronous caller; raise ProviderInitializationError if the attempt was
abandoned, while preserving the existing behavior for successful attempts.
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lib/open_feature/sdk/configuration.rbsig/open_feature/sdk/configuration.rbsspec/specification/flag_evaluation_api_spec.rb
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If another thread replaces or shuts down the provider while set_provider_and_wait is running its init, the call now raises ProviderInitializationError, matching what waiters on the same attempt get. The abandoned attempt also no longer dispatches READY. Signed-off-by: Jose Colella <jose.colella@gusto.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Summary
initis still running used to leave anyone inset_provider_and_waiton it blocked, even aftershutdown. They now getProviderInitializationError.set_provider_and_waitcalled from inside the provider's owninit(for example, from a handler of an event it emits there) used to wait on itself forever. It now raisesProviderInitializationErrorinstead of deadlocking, and never reports the unfinished init as successful.🤖 Generated with Claude Code