fix(runtime): use process-owned credential-home locks - #613
fix(runtime): use process-owned credential-home locks#613mldangelo-oai wants to merge 5 commits into
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@codex review Please re-review current head The PR now explicitly requires landing the corrected combined tree and stopping any heartbeat-only preview processes first. Please verify whether the mixed-version finding remains a blocker under that rollout, and check the corrected tree for any other issues. The reasoning and compatibility evidence are in the existing review thread. |
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Codex Review: Didn't find any major issues. Bravo. Reviewed commit: ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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@codex review Please review rebased head The runtime suite (129 passed, 11 platform skips), types, formatting, build, and the built Node 22.13 paused-owner/crash-recovery regression passed again. Please check integration with the current base and the documented requirement to stop heartbeat-only operations before upgrading. |
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Codex Review: Didn't find any major issues. Nice work! Reviewed commit: ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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Let the stalled holder exit if its controller dies. Shorten credential-lock documentation and remove the outdated release-failure explanation.
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@codex review Please review current head The runtime suite passed (129 tests, 11 platform-specific skips), as did types, formatting, and build. The normal paused-owner/crash-recovery fixture passed on Node 22.13 and Node 24.15. Parent-exit probes passed on Node 22, Node 24, and Bun; a before-change control still reproduced the orphaned holder. The broader seeded and random-order test suites and fresh CI are still running. |
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Codex Review: Didn't find any major issues. Keep it up! Reviewed commit: ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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Critical review
Reviewed 0557442c1d425b45229b506cc88cc3ba2d21ae4d. A process-owned lock addresses a real correctness defect in heartbeat-based ownership. No additional blocking code defect found, but the mixed-version rollout limitation must remain explicit.
Necessity and correctness
A paused process can still own and mutate the credential home. A stale heartbeat is therefore not proof that admitting another writer is safe. Holding an exclusive SQLite transaction in the process performing the protected work removes that expiry inference and releases ownership when the process exits.
The acquisition and release paths retain home identity checks, validate the persistent guard file, handle contention without a production expiry timeout, and close the database after acquisition errors and release failures. The protocol marker allows orphaned new-format owner records to be reclaimed only after acquiring the native lock. Conservative treatment of live legacy PID-only records is appropriate; a reused PID cannot safely be distinguished by age alone.
Simplification and compatibility
SQLite may look heavy for a mutex, but using the SQLite implementation already built into both supported runtimes avoids another dependency or helper process and provides the needed crash semantics. Keep the implementation limited to lock ownership; it should not become another state database or heartbeat service. The legacy directory remains justified only as a compatibility boundary, not a second independent source of ownership for new clients.
The old heartbeat-only client still cannot be made safe by this new client's lock: it does not participate in the SQLite protocol. A compatibility heartbeat would also fail when the new owner pauses. The PR's instruction to stop heartbeat-only operations before upgrading is therefore a real requirement, not an optional caution. Please put that upgrade requirement alongside the shipped README lock guidance as well; package users will not necessarily read the PR description. I verified that #611 is merged and the npm-v0.1.18/current-main snapshot contains the heartbeat implementation, so the older thread's characterization of it as only an unreleased preview is no longer current.
Verification
Ran the credential-lock subset with seed 12345: 9 passed, 0 failed, including the real stalled-owner/crash-with-reused-PID fixture, Bun 1.3.14/Linux with locally available dependencies and a normal 022 umask outside the sandbox. I did not rerun the built Node package smoke, native Windows locking, or a mixed-version live deployment. No credential lock files were manually removed outside synthetic fixtures.
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Blocking on the released-client compatibility issue in the existing credential-lock thread. The mixed-version probe reproduces concurrent ownership with an active new holder; the matched old/old control remains exclusive. The new-only lock tests and CI pass but do not cover this regression.
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Reviewed e51e9dbc9b177d3db0fca4aeea8f0602260cd725 against current main. The fixture concern is addressed: under the reproduced 1.1-second holder suspension, the updated fixture observes the heartbeat and preserves ownership; the previous fixture acquires incorrectly. The updated fixture still fails against the unmodified runtime without the compatibility heartbeat, so it retains regression coverage.
Production locking code is unchanged from the already-verified released-client fix. All 11 focused lock tests pass, and full current-head CI passes all 25 jobs, including the three required checks. No remaining blocking findings.
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Summary
A stale heartbeat does not prove that a credential-home owner has exited: a paused process may still hold credentials, and PID reuse can prevent safe crash recovery. Hold ownership in an exclusive SQLite transaction while preserving compatibility with released 0.1.18 clients that still use the directory heartbeat.
Changes
Testing
Validated final commit
e51e9dbc9b177d3db0fca4aeea8f0602260cd725:bun test --timeout 30000 tests-ts/runtime.test.ts --seed 12345: 129 passed, 11 platform-specific skips, 0 failed.pnpm run types,pnpm run format,pnpm run build, andgit diff --check: passed.pnpm pack --pack-destination ../../distfollowed bypnpm run check:package <packed tarball>: passed, including 255 archive entries, public imports, NodeNext types, the installed Node credential-lock regression, 111 bundled plugin files, the bundled Codex executable, and a nested worker.4c69e65db56b0034eddbd64c28071bfff7ec0dabwith seed12345: 1,593 passed, 30 skipped, 1 failed; the failed unrelated deep-scan reducer-deadline test exceeded its 30-second limit under concurrent local load. The identical reducer test passed in 11.28 seconds when rerun separately with the same 30-second limit; the final follow-up changes only the credential-lock test fixture.Risk and rollout
Released 0.1.18 clients do not participate in the native SQLite protocol. The compatibility heartbeat prevents those clients from taking over an active newer owner's lock, but a paused newer owner cannot refresh its heartbeat and an older client can still reclaim its directory. Finish operations using older versions before upgrading; do not rely on mixed-version protection when an owner may pause.
Legacy PID-only records cannot distinguish a live owner from a reused PID, so ambiguous records still require manual recovery after stopping all operations using the credential home. Never remove the persistent SQLite guard while an operation is running. Supported Node versions and the public CLI remain unchanged; Node may emit its existing built-in SQLite experimental warning. Cross-platform CI remains required before landing.
Public disclosure review