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fix(embed): preserve worker control reasons and additive permissions - #7347
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Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Merge Risk | ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 60.64% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 94 functions across 39 files. (1 skipped:… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
✅ Passed checks (4 passed)
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly identifies the main embed fixes: preserving worker control reasons and supporting additive permission callbacks. It is concise and related to the primary changes. 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.
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Explanation
Docstring coverage is 60.64% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 94 functions across 39 files. (1 skipped: 1 unsupported.)
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Storage e2e on MongoDBwill not run on this change (.github/workflows/storage-mongodb.yml): e2e-not-triggeredStorage e2e on MongoDBin.github/workflows/storage-mongodb.ymlwill not run for this pull request: its workflow'spaths:filter matches nothing this pull request changed. The change is merged without its end-to-end suite having seen it.
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Actionable comments posted: 4
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Inline comments:
Review comments at @crates/openhuman-embed/src/agent/lifecycle.rs:
- Line 42: Update approval registration in the removal flow around before_notify
and deny_all_for_agent so registrations cannot slip past the denial snapshot:
reject new approvals once removal starts, or synchronize registration with
denial and settle any accepted late approvals as agent_removed rather than
cancelled by WaiterGuard.
Review comments at @docs/gitbooks/en/developing/embed/cookbook.md:
- Line 85: Update the `linux_fleet` Cargo command in both cookbook copies to
include the release profile, so the fleet measurement runs with `--release`
rather than Cargo’s default dev profile.
Review comments at @docs/gitbooks/en/developing/performance.md:
- Around line 157-158: Separate the reproduction command for the main table from
the no-swap measurement. Update the command invoking linux_fleet_cgroup.py so it
does not set MemorySwapMax=0, and document that setting only in a distinct
command for the no-swap run.
Review comments at @gitbooks/developing/performance.md:
- Line 22: Update the macOS memory comparison in the performance documentation
to convert the table’s 1,770 KiB measurement to approximately 1.73 MiB and
adjust the derived threshold to approximately 3.46 MiB; keep the prose
consistent with the table’s binary units.
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📒 Files selected for processing (33)
README.mdcrates/openhuman-core/src/hooks/bridge.rscrates/openhuman-core/src/hooks/bridge_tests.rscrates/openhuman-embed/examples/README.mdcrates/openhuman-embed/src/agent/lifecycle.rscrates/openhuman-embed/src/agent/spec.rscrates/openhuman-embed/src/permission.rscrates/openhuman-embed/src/runtime/lifecycle.rscrates/openhuman-embed/src/turn.rscrates/openhuman-embed/src/turn_cancellation.rscrates/openhuman-embed/src/turn_control.rscrates/openhuman-embed/tests/inline_permissions.rscrates/openhuman-embed/tests/turn_cancellation.rsdocs/README.ar.mddocs/README.de.mddocs/README.ja-JP.mddocs/README.ko.mddocs/README.tr.mddocs/README.ur-pk.mddocs/README.zh-CN.mddocs/TEST-COVERAGE-MATRIX.mddocs/benchmarks/medulla-embed-linux.jsondocs/gitbooks/en/developing/embed/api-index.jsondocs/gitbooks/en/developing/embed/api-index.mddocs/gitbooks/en/developing/embed/capability-matrix.mddocs/gitbooks/en/developing/embed/cookbook.mddocs/gitbooks/en/developing/performance.mdgitbooks/developing/embed/api-index.jsongitbooks/developing/embed/api-index.mdgitbooks/developing/embed/capability-matrix.mdgitbooks/developing/embed/cookbook.mdgitbooks/developing/performance.mdllms-full.txt
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Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Requesting changes: 2 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
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Storage e2e on MongoDBwill not run on this change (.github/workflows/storage-mongodb.yml): e2e-not-triggeredStorage e2e on MongoDBin.github/workflows/storage-mongodb.ymlwill not run for this pull request: its workflow'spaths:filter matches nothing this pull request changed. The change is merged without its end-to-end suite having seen it.
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Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
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Requesting changes: 1 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
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…gement Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
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… atomically Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
Co-authored-by: Medulla <medulla@tinyhumans.ai>
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| Some(scope) => scope | ||
| .with_open(|| self.decide_open(request_id, decision)) | ||
| .unwrap_or(Ok(None)), |
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When an approval TTL expires after remove_agent closes this scope but before deny_all_for_agent settles the row, this guard is bypassed because resolve_park_timeout in gate_intercept_decision.rs writes its denial directly through store::decide. That timeout can win the conditional update, consume the route, and emit resolution: "expired"; removal then finds no pending row, contrary to the API guarantee that approvals parked when removal is claimed are settled as agent_removed. Route internal timeout terminal transitions through the same instance/removal barrier.
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| } | ||
| // Process entries can disappear or become unreadable between | ||
| // enumeration and reading. | ||
| if let Ok(stat) = std::fs::read_to_string(entry.path().join("stat")) { |
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On Linux, a process name may legally contain arbitrary non-UTF-8 bytes (for example via prctl(PR_SET_NAME)), causing this read_to_string to fail even though /proc/<pid>/stat and the process still exist. Silently skipping every read/decode failure lets active_members return false once the leader is a zombie, so cancellation can acknowledge cleanup without waiting for an invalidly named descendant, particularly a kill-pending task stuck in I/O. Parse the stat fields from bytes and distinguish a verified disappearance from other read failures.
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| if !active { | ||
| return Ok(()); | ||
| } | ||
| tokio::time::sleep(std::time::Duration::from_millis(1)).await; |
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On Linux, if a descendant remains in uninterruptible D state after SIGKILL (for example on hung NFS or device I/O), it remains an active member until that I/O returns. This loop then schedules a full /proc scan through spawn_blocking every millisecond for an unbounded period; a single stuck tool can consume substantial CPU, and several cancellations can saturate the blocking pool while TurnCancellation::cancel() waits. Use a bounded or exponential polling interval while retaining the detached cleanup wait.
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Summary
Follow up merged #7305 with regression fixes found during Medulla issue #12 integration:
agent_removedbefore notifying in-flight turns. Resolve flow workspace context before registration, then publish generic, flow and notification approval surfaces under the same instance barrier.Refresh generated embed API/cookbook references, fix the broken embedding-guide links, and publish the fresh Linux fleet reruns and raw data. The user authorized this single OpenHuman follow-up because #7305 merged before these commits arrived. Medulla #13 has also merged; its final dependency-pin update is being validated separately. Workflow integration continues in the existing #31.
Problem
Medulla workers require reliable cancellation errors, removal reasons, additive permission policies and resolved cwd in configured hooks. Integration found these contracts could fail after #7305 merged.
Solution
Classify native cancellation errors by their triggering control while preserving other completed results. Close each instance’s approval-registration barrier before taking the denial snapshot and publishing removal. Polling and callback decisions share a barrier with the removal claim, preventing approvals while the denial snapshot is being settled. Give each permission registration a distinct ordered key and derive hook cwd from the resolved context. Capture the owning instance’s removal scope when registering an approval so context-free gate, RPC and chat decisions cannot bypass removal. Keep the tracked command leader unreaped while waiting for its process-group descendants to stop, then reap it and acknowledge cleanup. Existing loopback provider/tool regressions cover the behavior.
Impact
Changes cover embed worker control, its core approval-registration barrier and hook identity. Public APIs remain compatible. Host tools retain responsibility for their own spawned processes; built-in tracked commands still finish cleanup before cancellation returns.
Validation
Regression tests reproduced the cancellation, removal, permission, cwd, direct-gate approval and closed-output descendant failures before their fixes. The final instrumented embed suite passes 230 tests: 196 unit tests and 34 integration tests across 21 targets. Seven tests against the production registration-scope/flow coordinator modules and one production process-state parser test also pass. Changed Rust production coverage is 88.85% of 296 lines against the latest base, with tests excluded and core plus embed included.
Strict embed Clippy passes for the library and lifecycle/turn/process cancellation targets. Minimal-feature core library Clippy passes with all Clippy warnings denied and allowances only for existing unused imports/variables. Formatting, Rust layout, coverage matrix (302 rows, 130 IDs), and generated-doc checks pass. All 24 focused docs-generator/runner/consumer-contract tests pass. Strict default-feature Rustdoc passes with warnings denied, and the real 100-agent fleet example passes through the corrected release/no-default-feature runner. Capabilities were regenerated from a freshly compiled default-feature report, correcting the stale SQLite capability flag. The new core approval paths match the existing MongoDB storage workflow filter.
Linux mock-only measurements at source
b783b39e78ce7ff1a04e0ab8c764746fc970aa00: marginal RSS medians are 4.702 / 4.028 / 3.355 MiB at N=50 / 100 / 500 in a 2-GiB, two-CPU cgroup. Only the N=500 median meets the correctly converted 3.457-MiB target (twice 1,770 KiB); the no-swap N=500 result exceeds it at 3.541 MiB and also narrowly exceeds the ticket’s nominal 3.54-MiB target. Every run completed with zero OOM events. Boot 259–263 ms and first turn 49.9–87.4 ms meet the 2× latency targets. These results do not establish real-provider/tool/MCP capacity or performance of commits after the recorded revision.Submission Checklist
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AI Authored PR Metadata
Linear Issue
Commit & Branch
Validation Run
Validation Blocked
ConvertMarkdown, but the host client on upstream/main does not call it. The core suite reported 9,861 passes and that single failure (8 skipped). The client requires a compatible signed registry artifact before adding that call; this unrelated conversion integration is outside these embed changes.Behavior Changes
Parity Contract
Duplicate / Superseded PR Handling
Summary by CodeRabbit
Bug Fixes
Documentation