feat(usage): add durable stream timeline and failure attribution to request history - #2366
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📝 WalkthroughWalkthroughThe change adds stream timing and failure-attribution metadata to relay handling, request logs, and persisted usage records. Normalization validates timeline values and enum fields. Tests cover persistence, invalid-value removal, retry timing, and upstream stream failures. ChangesStream observability persistence
Estimated code review effort: 3 (Moderate) | ~25 minutes Sequence Diagram(s)sequenceDiagram
participant Upstream
participant Relay
participant RequestLog
participant UsageLog
Upstream->>Relay: send stream bytes and terminal events
Relay->>RequestLog: record timeline and failure attribution
RequestLog->>RequestLog: copy diagnostics to active attempt
RequestLog->>UsageLog: persist normalized usage metadata
Suggested reviewers: Merge Risk: 🟡 Moderate · up to This PR adds persisted streaming timelines and failure attribution, but the current head can still lose request-history fields, misattribute local failures, and corrupt retry-attempt timing data. Merge should wait for these bounded diagnostics correctness issues to be fixed or explicitly accepted by the owner. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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리뷰 · 우선순위 46 / 80설명: 이 PR은 이슈 #1217 이 말한, 요청 기록에 스트림 단계 시간과 실패가 어디서 났는지를 남기라는 일의 저장 모양만 만든다. 지금 CURRENT src/usage/log.ts StreamTimeline / FailureSide / FailureStage - 저장 모양만 추가한다. 서버가 값을 안 넣는다 메인테이너의 판단이 필요한 지점
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Actionable comments posted: 2
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Inline comments:
In `@src/usage/log.ts`:
- Around line 92-95: Update the shared request and attempt logging flow to
collect and populate streamTimeline, failureSide, and failureStage from actual
streaming timing and failure events before appendUsageEntry persists the row.
Preserve normalization and manually supplied values, and add an integration test
covering a real streaming failure that verifies these fields are present in the
persisted usage entry.
- Around line 155-156: Update normalizeUsageEntry and the
transportPhase/terminalSource metadata types to use closed TransportPhase and
TerminalSource unions with explicit allowlists, matching the existing
FailureSide and FailureStage pattern. Normalize raw inputs to allowed labels and
omit unknown or credential-like values before persistence or response
serialization; add coverage for rejected unknown and credential-shaped values.
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Blocker: nothing persists, and the commit claims to close #1217The serializer work is good — closed unions for But the fields never reach disk. Verified on this head:
There is also no runtime producer: On
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Four candidates reviewed at their current heads, all four held back, and a final count that is honest about a backlog which never stopped moving. lidge-jun#2083 was the strongest remaining candidate - approved, mergeable, and with security work that revert-testing confirmed is load-bearing. Its own test file cannot parse: the mock exports only callXaiImages while fulfill.ts now also imports resolveXaiAspectRatioLiteral, so the runner dies before any assertion and the new aspect_ratio regression never executes. lidge-jun#2366 persists nothing. addRequestLog wrote all five new fields as null and the function request-history projects through returned them null, while the first commit says closes lidge-jun#1217. lidge-jun#2368 is confirmed complementary to the merged lidge-jun#2310 rather than redundant, but sits 35 commits behind with an unrelated pacing test still bundled. lidge-jun#2033 is 615 behind with its file changed underneath it. The open count went 45 to 45. That is the useful number: ten PRs merged and eight closed while roughly as many arrived, three of them after this phase's own inventory was taken. A backlog with active contributors is a flow, not a queue that drains, so the measure is whether each item carries a recorded disposition rather than whether the count fell. Records the recurring defect class across six held PRs: the code does something the description denies, and the tests pass either way. None was visible from the diff; each needed the same move, which is to revert the hunk and watch what does not go red.
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Inline comments:
In `@src/server/relay.ts`:
- Around line 1150-1154: Update the synthetic clean EOF handling in
consumeForInspection to set logCtx.transportPhase to "mid_stream" alongside
terminalSource, failureSide, and failureStage before invoking
onTerminal("incomplete").
In `@src/server/request-log.ts`:
- Line 962: Remove the overwrite of activeAttempt.streamTimeline in the request
logging flow so noteStreamTimelineEvent’s attempt-relative values remain intact
across retries. Add a retry test verifying request-relative and final-attempt
timelines retain separate origins.
In `@tests/usage-log.test.ts`:
- Around line 950-983: Update the invalid-attribution test data and assertions
so failureSide and failureStage remain cleared as invalid closed-enum values,
while transportPhase and terminalSource preserve the safe bounded values
"invalid_phase" and "invalid_source" on both the row and its first attempt.
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Inline comments:
In `@src/server/relay.ts`:
- Around line 803-805: Initialize handlers.logCtx.requestStartedAt from the
request start value start before creating the inspector and recording relay
timeline events, so noteStreamTimelineEvent and addFinalRequestLog use the
request origin consistently across retries. Apply this to both the first-output
event and the additional timing call around the referenced symbols, and add a
live consumeForInspection retry test without a pre-populated request origin.
In `@src/server/request-log.ts`:
- Around line 425-429: Normalize diagnostic fields, including transportPhase and
terminalSource, inside addRequestLog before calling retainRequestLogEntry, and
use that same normalized entry for both in-memory retention and JSONL
serialization. Preserve the existing credential-redaction behavior used by
appendUsageEntry, and add a direct addRequestLog regression test confirming
tokens and OAuth material are absent from the ring and serialized/API output.
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Holding rather than closing. The capability is absent from |
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Four candidates reviewed at their current heads, all four held back, and a final count that is honest about a backlog which never stopped moving. lidge-jun#2083 was the strongest remaining candidate - approved, mergeable, and with security work that revert-testing confirmed is load-bearing. Its own test file cannot parse: the mock exports only callXaiImages while fulfill.ts now also imports resolveXaiAspectRatioLiteral, so the runner dies before any assertion and the new aspect_ratio regression never executes. lidge-jun#2366 persists nothing. addRequestLog wrote all five new fields as null and the function request-history projects through returned them null, while the first commit says closes lidge-jun#1217. lidge-jun#2368 is confirmed complementary to the merged lidge-jun#2310 rather than redundant, but sits 35 commits behind with an unrelated pacing test still bundled. lidge-jun#2033 is 615 behind with its file changed underneath it. The open count went 45 to 45. That is the useful number: ten PRs merged and eight closed while roughly as many arrived, three of them after this phase's own inventory was taken. A backlog with active contributors is a flow, not a queue that drains, so the measure is whether each item carries a recorded disposition rather than whether the count fell. Records the recurring defect class across six held PRs: the code does something the description denies, and the tests pass either way. None was visible from the diff; each needed the same move, which is to revert the hunk and watch what does not go red.
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…equest history (closes lidge-jun#1217)
…portPhase on synthetic EOF (lidge-jun#1217)
…meline on payload (lidge-jun#1217)
…sistence contract (lidge-jun#1217)
Manually ported origins to split HTTP, WebSocket, combo and passthrough owners; preserve spend, affinity and Codex WS stage normalization. Add source regression coverage without running tests on the connected host. Co-authored-by: chilung <b0423031@gmail.com>
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Add an opt-in, management-authenticated /api/metrics scrape endpoint exporting process-local aggregates (logical requests, physical sends, distinct recovery kinds per attempt, duration and TTFT histograms) in Prometheus text format v0.0.4 with closed bounded label sets. A dependency-injected recorder feeds from the existing final-request and physical-send seams (no log rescan on scrape); the owner is created once in createServeOptions and shared by all listeners. Disabled mode (the default) wires nothing and answers 404 after management authentication. Malformed config degrades to disabled at load but is rejected on management writes via a pre-schema boundary check. Documented in English and all seven locales; distinct from the durable per-request timeline work in #2366. Part of #5117
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* feat(server): opt-in bounded metrics export endpoint Add an opt-in, management-authenticated /api/metrics scrape endpoint exporting process-local aggregates (logical requests, physical sends, distinct recovery kinds per attempt, duration and TTFT histograms) in Prometheus text format v0.0.4 with closed bounded label sets. A dependency-injected recorder feeds from the existing final-request and physical-send seams (no log rescan on scrape); the owner is created once in createServeOptions and shared by all listeners. Disabled mode (the default) wires nothing and answers 404 after management authentication. Malformed config degrades to disabled at load but is rejected on management writes via a pre-schema boundary check. Documented in English and all seven locales; distinct from the durable per-request timeline work in #2366. Part of #5117 * fix(server): count buffered terminal failures and test real flows Review fold: a buffered HTTP 200 with response.failed/incomplete was parsed for the log but never reached metrics, counting as completed. The bounded terminal enum now propagates from buffered inspection through EOF finalization into the metric fact, while cancel (499) and read-error (502) retain priority. New server-harness coverage drives real HTTP retry, real WebSocket response.create, buffered failed/incomplete, read-error priority, SSE EOF, cancellation, and missing-vs-zero TTFT through authenticated scrapes. Part of #5117 * test(server): fix the real-flow fixtures and the WebSocket wiring oracle Hosted CI fold (run 35450374594): the buffered read-error stream errored in start() before a downstream body existed, and its failure leaked the spend-ledger owner into the next three cases. Streams now emit bytes first and error on pull, the client consumes/cancels bodies explicitly, every started server is tracked and fully stopped before the fixture home changes, and afterEach awaits remaining servers. The WS source oracle now expects the metrics-injected handler wiring while keeping its idle-timeout and activation guards. Production lease policy unchanged. Part of #5117 * fix(server): finalize failed pre-response reads before rethrow Coordinator RCA fold: a bounded upstream JSON read that rejects before handleResponses returns previously escaped addFinalRequestLog entirely. The serve-options catch now records exactly one 502 non_stream failure through the existing guarded finalizer and rethrows unchanged, so failed missing-TTFT metrics are real. The cancel race test now awaits the bounded promise resolved by the upstream stream's cancel callback (the relay records the 499 before that callback), replacing any timing assumption. Production lease behavior unchanged. Part of #5117 * fix(server): classify pre-response client aborts as client_cancel Review fold: a client abort during a buffered upstream read hits the new catch before streaming cancel callbacks exist, and was misclassified as 502/non_stream. The catch now finalizes 499/client_cancel when the request signal is aborted and 502/non_stream otherwise, with the once-only guard and unchanged rethrow. A deterministic abort regression (aborted 1, failed 0, sends 1, missing TTFT) awaits the upstream cancel signal and the fetch rejection before scraping. Part of #5117 * test(server): make the abort fixture observe the real outgoing signal Review fold: the mocked body never observed the outgoing request's signal, so a client abort did not propagate deterministically. The fixture now follows the established signal-aware pattern: the mocked outgoing request's signal errors the stream with signal.reason, every wait is event-driven with a bounded deadline (read start, abort observed, client outcome, finalized 499 row), and the metrics contract assertions are unchanged. The SSE cancel case aborts the explicit request signal after one real chunk and synchronizes on its finalized row; no upstream cancel-callback assumption remains. Part of #5117 * feat(server): add the test-only finalized-row observer seam Mill's deterministic fixtures synchronize on retained request-history rows; this is the observer they subscribe to. Empty by default, notified synchronously after a row enters retained history, and observer errors can never affect request logging. Required by the already-pushed real-flow tests. Part of #5117 * test(server): deterministic error-boundary and rejection-safe waits Review fold: the read-error case now installs a narrow Bun.serve options spy (the existing real-server pattern) with an explicit test-only error handler that returns 500, asserts the exact expected fixture error, and fails on any unexpected error — the real fetch/routing/finalization pipeline stays active and production error behavior is unchanged. The finalized-row subscription promise is now non-rejecting; deadlines apply only at actual await sites, so an unattended subscription can never unhandled-reject between tests. Abort and SSE cancellation stay signal-aware and event-driven. Part of #5117 * test(server): make the SSE cancellation mock observe the abort signal Final harness fold: the second SSE responder now captures the outgoing request signal and errors its stream with signal.reason on abort, so a client abort rejects the pending inspection read and the relay finalizes 499 immediately — inside the existing 5s bound, with the production 15s post-cancel drain unchanged. Part of #5117 * fix(server): classify successful 101 upgrades as completed Review fold: a successful sideband/dictation upgrade finalizes with 101 and was counted as failed because classification only covered 200-399. 101 now classifies as completed strictly after cancellation and terminal-state precedence; a 101 with a failed or incomplete terminal still counts as failed or incomplete. Regressions cover a real upgrade flow and the precedence case. Part of #5117 * test(server): activate the live upgrade fixture through the real eligibility path Hosted CI fold: the fixture provider was ineligible for the real-time relay, which refuses before the injected factory runs. The fixture now declares a canonical openai-apikey provider with a fake key, the factory call count proves the genuine 101 path was taken, and a bounded HTTP upgrade probe captures refusal status/body on failure. Production eligibility unchanged. Part of #5117 * fix(server): finalize live-sideband exits and harden the upgrade fixture Review fold: six post-context exits in the live-sideband path skipped metrics finalization. A request-local idempotent finalizer now records exactly one row for each (503 refusal, resolver exception, acquisition cancel 499 / timeout 504 / internal 503, pre-upgrade cancel 499, upgrade throw 502, upgrade refused 426), preserving statuses, client_cancel semantics, and rethrow behavior; existing resolved/101 paths are unchanged. The upgrade fixture's upstream is now always stopped via an outer try/finally with nested socket/metrics cleanup. Part of #5117 * test(server): cover acquisition cancellation, deadline, and refusal paths Review fold: real-route regressions for acquisition cancellation (one 499 client_cancel row, one aborted metric), the production 120s acquisition deadline (one 504 row, timer captured via the established audio-transcriptions precedent), capacity refusal (one 503 row), and the resolver exception (one 500 row through the real error handler). Each proves once-only finalization and exactly one logical metric. Part of #5117 * test(providers): add fixed-phase timing diagnostics to the CodeBuddy timeout case Diagnostic-only patch from campaign coordination, adjusted so the assertion measures raw elapsed time (the clamp stays only in the diagnostic string). Phase marks, classification, the 250ms comparison, and the 10/10/35 budgets are unchanged. This labels the stall phase as an observation; no root cause is claimed. Part of #5117 * test(server): isolate acquisition fixtures with immediate try/finally Review fold: the resolver and timer spies now enter their own try/finally immediately after creation, with server cleanup nested inside, so a startup throw can no longer leak a spy across the suite. All activation and metric assertions unchanged. Part of #5117
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Disposition from the retry and event-model consolidation that landed on This pull request is not superseded and is not being closed. Recording why it did not land in that branch, so the next step is explicit:
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Carries the rehydration half of #2366 — the half that brings the durable terminal facts out to where an operator reads them. Its separate attribution vocabulary is deliberately left behind, because the landed stage and cause model already owns that question and two vocabularies for one thing is the class of defect this batch exists to remove. The page classified every request by its numeric HTTP status alone and showed no send count at all, so it disagreed with both other surfaces about the same request. A turn cut short by max_output_tokens is durably incomplete and is reported incomplete by the exporter; the page rendered a green 200. The data was never missing — /api/logs spreads the whole durable entry — the page simply did not declare terminalStatus, closeReason or spend. It now declares them and calls the shared classifier rather than reimplementing the precedence, so agreement is structural instead of a rule someone maintains. It also shows the upstream send count, and names the unresolved remainder when there is one, because a send total without it is how a duplicate-send incident stays invisible. The recovery-kind union is now the durable roster instead of a copy. The copy had drifted to nine of thirteen members, so key-401, oauth-account-429, opaque-blob-rejection and reasoning-effort-downgrade each reached the operator as "Unknown recovery reason" — four real causes rendered as an absence of one. The satisfies clause makes the next added kind a typecheck failure here rather than a silent fallback, and the four missing labels are added across all ten catalogs. Co-authored-by: chilung <b0423031@gmail.com>
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* refactor(usage): one terminal classification for a finished request Three surfaces answered "how did this request end" three different ways. The durable row carries terminalStatus and closeReason, the Prometheus exporter had its own private classifyResult, and the dashboard read the numeric HTTP status and nothing else. That is not cosmetic. A turn cut short by max_output_tokens is durably status 200 with terminalStatus "incomplete", which the exporter reports as incomplete and the dashboard rendered as a green 200: the metric and the operator disagreed about whether the user got an answer. Move the classifier into src/usage/request-outcome.ts and have the exporter import it, including its result label set, so the four strings are stated once. Semantic terminal facts are read before the numeric status, which is the whole point; the status is consulted only when no terminal event was recorded. The module also names the send totals a surface should show, because reporting sends without the unresolved remainder is how a duplicate-send incident stays invisible. It is a leaf: its only import is a type. * fix(gui): make the logs page agree with the ledger and the exporter Carries the rehydration half of #2366 — the half that brings the durable terminal facts out to where an operator reads them. Its separate attribution vocabulary is deliberately left behind, because the landed stage and cause model already owns that question and two vocabularies for one thing is the class of defect this batch exists to remove. The page classified every request by its numeric HTTP status alone and showed no send count at all, so it disagreed with both other surfaces about the same request. A turn cut short by max_output_tokens is durably incomplete and is reported incomplete by the exporter; the page rendered a green 200. The data was never missing — /api/logs spreads the whole durable entry — the page simply did not declare terminalStatus, closeReason or spend. It now declares them and calls the shared classifier rather than reimplementing the precedence, so agreement is structural instead of a rule someone maintains. It also shows the upstream send count, and names the unresolved remainder when there is one, because a send total without it is how a duplicate-send incident stays invisible. The recovery-kind union is now the durable roster instead of a copy. The copy had drifted to nine of thirteen members, so key-401, oauth-account-429, opaque-blob-rejection and reasoning-effort-downgrade each reached the operator as "Unknown recovery reason" — four real causes rendered as an absence of one. The satisfies clause makes the next added kind a typecheck failure here rather than a silent fallback, and the four missing labels are added across all ten catalogs. Co-authored-by: chilung <b0423031@gmail.com> * test(usage): hold the three surfaces to one answer The exporter is driven over the full cross product of status, terminal status and close reason and its emitted result label is compared against the shared classifier, so the two cannot drift apart without a case objecting. The cases that actually broke are asserted by name as well: an incomplete 200 is not a success, and a cancelled 200 is aborted. A source oracle holds the dashboard to the same contract. It has to call the shared classifier rather than read the status, it has to show the send total and the unresolved remainder, and its recovery-label map has to cover every member of the durable roster. That last one is a source oracle rather than a type check because the page is compiled by a separate project, which is how the copy drifted to nine of thirteen members unnoticed in the first place. Every label key the page names is required to exist in all ten catalogs, so a new recovery kind cannot ship with an English label and nine blanks. One case asserts the exporter's whole label set is still protocol, result, recovery and le after thirty-two requests carrying recoveries, which is the bounded-cardinality promise stated as an assertion rather than a convention. * docs(devlog): record lane C2 and refresh the deferred dispositions Each item that did not land carries the reason that is true against current dev, not the one written a day ago. #3748's blocker is now narrower and more useful than "parallel store": the recorder does not yet record why a request finally failed, so there is nothing closed to group by. #3983's emission path turns out not to be ephemeral, because stderr is redirected to the service log under both launchd and systemd. #5063 has a concurrent-append data-loss window that the rename cannot see. Retention and masking are stated in one table rather than reimplemented, with the policy that projections inherit both instead of getting their own. --------- Co-authored-by: chilung <b0423031@gmail.com>
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#2366 asked for durable failure attribution and shipped its own FailureSide and seven-member FailureStage to carry it. Lane C2 took the rehydration half and left that vocabulary behind, because defining a second one beside the stage and cause model that had just landed is the class of defect that blocked 2.60.0. This is the same answer expressed in the landed vocabulary. PersistedUsageAttempt and PersistedUsageEntry now carry failureStage and failureCause, both closed roster members. The resend verdict they imply is NOT stored: it is derived at read time, so a row written by an older build can never carry a verdict the current table would no longer reach. The derivation reads only closed values -- an HTTP status, a terminal status, a close reason, a transport phase, a recovery kind. errorCode and upstreamError are deliberately excluded: both are assembled partly from upstream text, so a classification keyed on them is a different answer per provider and per locale, and a grouping key built from them cannot promise it carries no content. That exclusion is what lets the pair be a Prometheus label and a fingerprint component without a masking pass. It runs at addFinalRequestLog, the one seam every request passes exactly once whatever transport served it, and before the attempt snapshot, so the row that reaches disk and the live attempt object carry the same pair. addRequestLog rebuilds the persisted row field by field rather than spreading it, so the pair is written there explicitly -- a field omitted at that line reaches /api/logs and never reaches usage.jsonl, which is the surface the derived projection reads. The stage and cause rosters move to src/usage/telemetry-contract.ts and src/lib/request-failure-model.ts re-exports them, the same relocation lane C2 made for the recovery roster and for the same reason: the dashboard renders a label per member, and a type-only import of the table module would drag its import graph into the browser project. The decision tables stay where they were. The test runs over a cross product built from the rosters themselves rather than a written-out list, so a member added later widens the space instead of leaving a case nobody wrote. Co-authored-by: chilung <b0423031@gmail.com>
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#2366 asked for durable failure attribution and shipped its own FailureSide and seven-member FailureStage to carry it. Lane C2 took the rehydration half and left that vocabulary behind, because defining a second one beside the stage and cause model that had just landed is the class of defect that blocked 2.60.0. This is the same answer expressed in the landed vocabulary. PersistedUsageAttempt and PersistedUsageEntry now carry failureStage and failureCause, both closed roster members. The resend verdict they imply is NOT stored: it is derived at read time, so a row written by an older build can never carry a verdict the current table would no longer reach. The derivation reads only closed values -- an HTTP status, a terminal status, a close reason, a transport phase, a recovery kind. errorCode and upstreamError are deliberately excluded: both are assembled partly from upstream text, so a classification keyed on them is a different answer per provider and per locale, and a grouping key built from them cannot promise it carries no content. That exclusion is what lets the pair be a Prometheus label and a fingerprint component without a masking pass. It runs at addFinalRequestLog, the one seam every request passes exactly once whatever transport served it, and before the attempt snapshot, so the row that reaches disk and the live attempt object carry the same pair. addRequestLog rebuilds the persisted row field by field rather than spreading it, so the pair is written there explicitly -- a field omitted at that line reaches /api/logs and never reaches usage.jsonl, which is the surface the derived projection reads. The stage and cause rosters move to src/usage/telemetry-contract.ts and src/lib/request-failure-model.ts re-exports them, the same relocation lane C2 made for the recovery roster and for the same reason: the dashboard renders a label per member, and a type-only import of the table module would drag its import graph into the browser project. The decision tables stay where they were. The test runs over a cross product built from the rosters themselves rather than a written-out list, so a member added later widens the space instead of leaving a case nobody wrote. Co-authored-by: chilung <b0423031@gmail.com>
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* feat(usage): record why a request failed, in the landed vocabulary #2366 asked for durable failure attribution and shipped its own FailureSide and seven-member FailureStage to carry it. Lane C2 took the rehydration half and left that vocabulary behind, because defining a second one beside the stage and cause model that had just landed is the class of defect that blocked 2.60.0. This is the same answer expressed in the landed vocabulary. PersistedUsageAttempt and PersistedUsageEntry now carry failureStage and failureCause, both closed roster members. The resend verdict they imply is NOT stored: it is derived at read time, so a row written by an older build can never carry a verdict the current table would no longer reach. The derivation reads only closed values -- an HTTP status, a terminal status, a close reason, a transport phase, a recovery kind. errorCode and upstreamError are deliberately excluded: both are assembled partly from upstream text, so a classification keyed on them is a different answer per provider and per locale, and a grouping key built from them cannot promise it carries no content. That exclusion is what lets the pair be a Prometheus label and a fingerprint component without a masking pass. It runs at addFinalRequestLog, the one seam every request passes exactly once whatever transport served it, and before the attempt snapshot, so the row that reaches disk and the live attempt object carry the same pair. addRequestLog rebuilds the persisted row field by field rather than spreading it, so the pair is written there explicitly -- a field omitted at that line reaches /api/logs and never reaches usage.jsonl, which is the surface the derived projection reads. The stage and cause rosters move to src/usage/telemetry-contract.ts and src/lib/request-failure-model.ts re-exports them, the same relocation lane C2 made for the recovery roster and for the same reason: the dashboard renders a label per member, and a type-only import of the table module would drag its import graph into the browser project. The decision tables stay where they were. The test runs over a cross product built from the rosters themselves rather than a written-out list, so a member added later widens the space instead of leaving a case nobody wrote. Co-authored-by: chilung <b0423031@gmail.com> * feat(metrics,gui): report the failure cause on every surface Completes the agreement condition for the attribution the previous commit records. The durable row carried a cause and nothing showed it, which is the same shape as the defect lane C2 fixed: a real cause reaching the operator as an absence of one. The exporter gains opencodex_request_failures_total{protocol,cause}. It counts the value the recorder derived rather than deriving one of its own, because the recorder is the only place that sees the transport facts a cause needs, and two derivations of one answer is exactly the disagreement this batch exists to remove. The label set IS the shared dictionary rather than a copy of it. Cardinality is fifteen causes across four protocols -- sixty series, fixed for the lifetime of the roster, every value from a frozen list -- and it labels a counter, never a histogram; a case asserts both. /api/logs computes resendPermission at read time for the row and for each attempt. It is never stored: the tables that decide it live in this build, and a row written by an older one must not assert a permission the current tables would refuse. A case asserts the pair is in the ledger module and the verdict is not. The Logs detail dialog shows the cause, the stage it reached and the resend verdict, and the attempt table leads its reason column with the cause, keeping the exact wire errorCode behind it because that is what a bug report needs. Three satisfies clauses make a missing label a typecheck failure rather than a silent fallback, and the existing catalog oracle now covers the new key groups. This trips the missing_ui_screenshot gate. This lane may not build or run the GUI, so it cannot produce the screenshot; the gate fires on changed paths under gui/, not on words in the description. The visible change is three rows added to the detail dialog for a failed request and a named cause where the attempt table previously showed a bare wire code. Co-authored-by: chilung <b0423031@gmail.com> * feat(usage): group recurring failures as a projection, not a second store #3748 proposed a privacy-safe failure ledger and built it as a second SQLite store beside usage.jsonl, keyed by a free-text signature that regular expressions tried to mask. Both halves are replaced. The store becomes a projection rebuilt from the canonical ledger. It holds a count and two timestamps per group and nothing else, so deleting a row from usage.jsonl removes it from this grouping on the next rebuild -- which is what it means for retention to have one owner instead of four. It reads through the existing scanUsageLedgerCooperatively and therefore inherits every bound that scanner already enforces: the 1 MiB row ceiling, the 1 MiB chunk, the cooperative yield, the opened-EOF snapshot boundary, and the path/device/inode/birthtime identity with its 64 KiB boundary digest. A same-size file whose revision metadata moved forces a rebuild rather than an append, so a replaced ledger can never extend stale groups. The masked signature becomes a fixed-arity tuple of closed roster members. A regular expression can only assert that it removed what it matched; a tuple whose every slot is a member of a frozen list has nothing to remove. The input type cannot express a model, an account, an error message, a prompt, a request id or a timestamp, so no amount of upstream text can reach a fingerprint. Absent facts are explicit nulls in fixed positions, because omitting them would let [a, null, b] and [a, b] collide. The configured provider name is the one input that starts as free text -- users name their own provider entries -- so it is resolved against the provider registry and becomes null when it is not a registry member. A provider named after its owner groups under null, which is the honest answer. This exposed a real hole the fingerprint would otherwise have inherited: terminalStatus was persisted as a plain string and copied through the normalizer on truthiness alone, unlike the inbound protocol, transport phase and terminal source beside it. Harmless while it was only rendered; not harmless as a grouping-key slot, because the value is assembled from an upstream terminal frame. It is now the closed type, derived from the outcome roster rather than restated, and validated on read back. Two parts of the original are deliberately absent. The occurrence list is a second copy of history with its own retention policy. The mutable monitoring/dispatched/fixed/ignored status and its notes are operator state, which cannot be reconstructed from immutable request rows; presenting them as a derived ledger would be presenting a claim this projection cannot make. They need their own owner, keyed by the fingerprint, if they are wanted. The reader is GET /api/usage?failures=1 rather than a new route: it answers a different question from the usage summary and costs a scan, so it is opt-in and a dashboard asking for spend does not pay for it. Co-authored-by: SB Yoon <44089734+yansigit@users.noreply.github.com> * feat(responses): count what an attempt delivered, on the attempt #3983 wanted the signals a stream diagnostic gives -- a missing terminal, adapter-to-client loss, empty output, partial output size -- and emitted one debug line per event to get them. Two things make that the wrong shape. It is a second durable record. emitDebugLine writes the in-process ring AND stderr, and stderr is redirected to the service log under both launchd and systemd, so an installed service accumulates a per-event history beside the ledger with its own retention, sequencing, request identity and masking. And per-event lines needed a per-payload fingerprint to correlate; under a process-global random key that makes every repeated prompt fragment, tool name and error message correlatable for the lifetime of the process. Five bounded counts on PersistedUsageAttempt answer the same questions and cannot carry content at all. They ride the attempt, so they inherit the ledger's normalization, masking and retention instead of acquiring their own, and the debug ring now FORMATS one line per finalized attempt from what the recorder already counted -- appendDebugLogLine directly, never emitDebugLine, so the ring is a live view of the durable record rather than a parallel source for it. The counting point matters. Adapter events are counted at the one seam every adapter parse already passes; relayed frames are counted after a SUCCESSFUL controller enqueue in the SSE bridge. Counting both at the reader would make the two numbers equal by construction and erase the one discrepancy they exist to expose. The recorder is bound to the request's translator budget -- an object every bridge on the delivery path already receives -- and reaches the current attempt through a callback rather than holding one, so a mid-request attempt rotation credits the attempt that is live rather than one already finalized. sideEffectEvents feeds the failure stage, which makes side-effect reachable for the first time: a relayed tool call is an externally visible effect, so the resend verdict refuses. Counting it at the transport rather than the adapter is what makes that correct -- an emitted tool call the client never received has committed nothing. Two things from the original are deliberately absent: run-turn-execution.ts is untouched, because its accounting distinguishes adapters that report their own physical sends and carrying the PR's unconditional pre-count would double-charge them; and no content HMAC exists anywhere here. Also narrows the 400 refinement added earlier in this branch, after review: it now consults only the LAST recovery recorded on the attempt, and a finalizer that can prove a cause passes it directly instead. The key-account rotation now attributes the attempt it seals, which previously reached the ledger with no attribution at all because the finalization seam only ever sees the last attempt of a request. Co-authored-by: yansigit <yansigit@users.noreply.github.com> * feat(usage): opt-in size limit for the usage ledger, with a revision contract #5063 proposed retention on the canonical ledger, which is the right architecture: the alternative is a projection that hides rows the ledger still has, and that is a second retention policy. What its implementation could not promise is that a row appended between its size snapshot and its rename survived -- it captured a size, copied a suffix, and renamed over whatever was there. Its own concurrency test performed two sequential calls and said so. Two things close that here. The append is synchronous and the compaction runs inside the same call stack, with no await between the append and the publication, so no in-process append can interleave; a second server on the same home cannot append at all, because it is refused by the existing ledger-owner lease at startup, which is why the hook is installed after ownership rather than before. And validateBeforeRename re-opens the target immediately before the rename and refuses unless identity, size and revision metadata are byte-for-byte what was copied -- so an append from anywhere else aborts the replacement rather than losing the row. Both the original file and that append survive, and the next append retries from a fresh revision. A test drives exactly that window through an injected hook, because a contract nothing can drive is a contract nobody has checked. Publication goes through the shared atomic writer rather than a hand-rolled temp lifecycle, which is where the exclusive private temp, the identity assertions, the platform-aware replace and the residual cleanup already live. The writer gains a streaming form so the retained span is copied in bounded chunks instead of held in memory as one string, and that form fsyncs the temp before the rename and does not swallow the failure: a replacement whose replacement is not on disk can lose the rows it was meant to keep. Rows are copied byte for byte and never parsed or re-serialized. A retention pass that understood the row shape would silently drop every field it was written before, which for this branch would mean the failure stage and cause it just added. The invalidation half was missing entirely from the original. Deleting rows invalidates three readers that do not watch the file: the 2,000-entry Logs ring, which otherwise keeps serving rows the ledger no longer has until eviction or a restart; the retained usage aggregate and failure projection, whose checkpoints now point past a boundary that moved; and the request-history index, whose source identity changed. All three are discarded after a replacement. This does NOT close #5063. The Usage-page control it also asks for is not here: this branch may not build or run the GUI, so it cannot produce the screenshot that gate requires, and shipping an unverifiable control is worse than shipping the policy the control would set. The limit is settable in config.json today and the docs say so. Co-authored-by: Vocllum <149675937+Vocllum@users.noreply.github.com> * fix(usage): read transport evidence before the status, and map 402 Adversarial review of this branch found three cases where the derived cause was wrong against real request paths rather than against the fabricated facts the first test used. A stream that dies mid-flight is reported as a SYNTHETIC 502 -- a tail this proxy wrote, with transportPhase mid_stream and the attempt marked aborted. Read in status order that 502 became upstream-fault, which claims the origin answered when it did not. Transport evidence now outranks the numeric status. Both causes refuse an automatic resend, so this is an accuracy fix rather than a safety one, but a label an operator cannot trust is a label they stop reading. 402 had no branch and fell through to payload-rejected, which made quota-exhausted unreachable and pointed an operator at the payload when the account is what has to change. transport-unsent was reachable only through a fabricated status 0: a real connect failure is formatted as 502 by the dispatch path. Worse, it was the FALL-THROUGH, and it is the one transport cause that permits an automatic resend. It is now reachable only through causeHint, from a site that classified a pre-connect failure and can prove it; everything else answers transport-ambiguous, which is the honest classification for an unknown execution state and the safe direction for a permission decision. Review also found the streamed atomic replacement fsynced the temp's contents and not the directory entry recording the rename, so a host losing power after a successful call could leave the old ledger or an indeterminate directory. The streaming form now syncs the parent directory. Only that form does: it is the one making a durability claim, and charging every config write for a promise its callers were never given is a different change. The regression cases now use the production shapes -- a synthetic 502 after mid_stream, an aborted stream, an upstream 502 that stays an upstream fault -- rather than a status no transport produces. * fix(usage): count buffered delivery, and read rosters instead of restating them Three findings from the second adversarial review round. A non-streaming turn delivers its whole answer as one body and calls no per-frame recorder, so every buffered response persisted adapter events with zero relayed ones. That is the adapter-to-client loss signal, raised on every buffered request, which makes the signal worthless. The buffered seam now records its delivery from the body it built: everything the adapter produced did reach the client, in one piece, and the semantic bytes and side effects are read from the assembled output. The body is read by field name rather than by the adapter event union, so a member added later is not a merge-time exhaustiveness failure in a counter that does not need one. Two tests claimed their cross products came from the declared vocabularies and then wrote the members out by hand, which is how an added member leaves an exhaustive test green without being exercised. They now read REQUEST_TERMINAL_STATUSES, REQUEST_CLOSE_REASONS and a transport-phase roster that is declared once in the contract leaf and consumed by the ledger validator instead of being stated twice. INV-RESEND-01 named two enforcing tests while the structure checker binds only the first, so the second was prose-only assurance. The attribution rule is now its own INV-ATTRIBUTION-01 with one binding, and the test names it so the binding is readable from both sides. Adds the lane record, including the two limits this branch does not close: the six intermediate attempt finalizers that still reach the ledger unattributed, and the successful-recovery case that can still misattribute a 400. It also records a pre-existing defect found while reviewing the atomic writer -- its scrub fallback opens with "wx" and so always fails on an existing temp -- which is left alone because it predates this branch and sits on a security-adjacent path. * refactor(server): move failure attribution out of request-log.ts The file-size ratchet reported NEW_OVERSIZED on the first exact-head run. src/server/request-log.ts carries the whole request-logging surface and was 1,962 lines against the repository's 2,000-line seed threshold; the attribution wiring pushed it to 2,015. The remedy is a move, never a number: the cap only ever goes down, and a threshold is not something to negotiate with. The two places a stage and cause are decided and written -- the finalization seam, and the attempt sealed by a key-account rotation -- now live in src/server/request-log-failure-attribution.ts. Behaviour is unchanged: the same facts go in, the same attempt is stamped before the snapshot, and the same pair reaches the row. request-log.ts is 1,979 lines after the move. That is 21 lines of headroom, which the lane record notes for whoever touches this file next. * fix(metrics): derive the exposition counts instead of restating them Three exact-head failures, all from the new failure-cause counter and all in assertions that counted by hand. management-metrics-export.test.ts already derives its sample total from the closed vocabularies -- its own comment says the literal "went stale the moment a bounded label value was added, which is the failure mode this repository keeps hitting in merges". The new counter's contribution is added to that arithmetic the same way. Its HELP/TYPE assertion was the literal 7 the comment warns about, so it now reads the metric names out of the exposition and asserts the two groups name the same set exactly once each, which is what deterministic grouping means and what no added metric can make stale. The dashboard-union assertion matched the literal string "import type { AttemptRecoveryKind", which broke when the import wrapped across lines to take the three new names. It now matches the property it was testing -- the name arrives from the contract leaf and the page declares no union of its own -- without depending on how the import is formatted. The public metrics table in the management-API reference gains the new series. * fix(config): assert every temp writer keeps exclusive creation, not two of them The streamed writer added a third openSync(path, "wx", 0o600) and the portability test counted exactly two. The count was the weaker form of what it meant: the property is that no temp writer in atomic-write.ts drops the O_CREAT bit, and that holds for however many writers exist. It is now a set comparison over every openSync on the temp path, which a fourth writer cannot make stale and an unsafe spelling cannot pass. The edit is line-neutral because that file sits exactly at its ratchet cap. --------- Co-authored-by: chilung <b0423031@gmail.com> Co-authored-by: SB Yoon <44089734+yansigit@users.noreply.github.com> Co-authored-by: yansigit <yansigit@users.noreply.github.com> Co-authored-by: Vocllum <149675937+Vocllum@users.noreply.github.com>
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Refs #1217
Summary
streamTimeline:upstreamDispatchMs,upstreamHeadersMs,upstreamFirstByteMs,upstreamFirstSemanticOutputMs,downstreamFirstWriteMs,upstreamEndMs,downstreamEndMs) and closed-enum failure attribution (failureSide:"upstream"|"relay"|"downstream"|"client"|"local",failureStage:"pre_dispatch"|"upstream_wait_headers"|"upstream_read"|"relay_transform"|"downstream_write"|"client_cancel"|"terminal_delivery") to persistedusage.jsonlentries and attempts.transportPhaseandterminalSourceacross process restarts.relay/relay_transform.upstreamFirstSemanticOutputMsstrictly on arrival of actual semantic text/reasoning deltas.structure/05_gui-and-management-api.md.Verification
bun test tests/request-log.test.ts tests/usage-log.test.ts tests/usage-summary.test.ts(152 pass, 0 fail, covering relay isolation, payload-gated semantic timeline, timeline serialization, failure side/stage normalization, and tail recovery)bun test tests/core-lab-boundary.test.ts tests/repo-hygiene.test.ts(29 pass, 0 fail)bun run typecheck(clean)bun run privacy:scan(passed)git diff --check(clean)Checklist
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Summary by CodeRabbit
New Features
Bug Fixes