fix(dispatch): terminalize a non-retryable PR publication instead of spending the retry budget (#430) - #453
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…spending the retry budget (#430) A 422 Validation Failed (or any 4xx writeback rejection, or an adapter route refusal) is rejected for its payload, not for a transient control-plane condition, so it never changes on retry. Previously every publish failure - transient or not - spent the same DISPATCH_PUBLISH_MAX_ATTEMPTS budget (#440) before releasing the batch slot, holding it ~10s longer than necessary and reporting a generic "retries exhausted" instead of the provider's actual reason. - `isNonRetryablePublishError` classifies a writeback failure by its message shape and short-circuits `#abandonExhaustedPublish` (and its two uncharged first-attempt callers, `#handleFirstPublishFailure` and `#tryPublishImplementerPr`) straight to abandonment with a distinct `publish-non-retryable` release reason, on the very first attempt. - `RelayfileGithubConnectionWrite.publishPullRequest` now confirms `refs/heads/<headRef>` actually exists before opening a PR on the remote-implementer path (no `headSha` supplied, so nothing here could have created the branch). A missing ref now fails with "implementer branch ... was never pushed to ..." instead of a bare 422 the provider answers on the PR create. Together these convert the measured production outage - a poisoned `publishing` row surviving container restarts and starving every other queued dispatch behind a `batchSize: 1` slot - into an immediate, named-reason release. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FwS4tX3fEMMwTbwCUHKvri Session-Id: 3be99500-f2e3-4163-8772-8fb6b587f9a7
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📝 WalkthroughWalkthroughThe change validates remote implementer refs before pull-request publication. The orchestrator now identifies non-retryable writeback failures, abandons them on the first attempt, and preserves retries for transient and rate-limit failures. ChangesPublish validation and retry handling
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to Some transient publication failures may be abandoned immediately, while some permanent failures still consume the full retry budget. These retry-classification defects should be corrected before merge. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant AgentExit
participant Factory
participant publishPullRequest
participant DispatchLifecycle
AgentExit->>Factory: handle publish failure
Factory->>publishPullRequest: publish implementer PR
publishPullRequest-->>Factory: success or publish error
Factory->>Factory: classify publish error
alt non-retryable error
Factory->>DispatchLifecycle: abandon with publish-non-retryable
else transient error
Factory->>DispatchLifecycle: schedule retry
end
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| await this.#mount.readFile(refPath) | ||
| } catch (error) { |
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When the Relayfile snapshot is temporarily unavailable or has not yet projected a branch that was just pushed, readFile rejects even though the GitHub ref exists. This catch converts every such read failure into the Refusing to publish GitHub PR shape, which the new classifier immediately treats as non-retryable and abandons the entire dispatch; the same failure also occurs in workspaces exposing only the canonical owner__repo projection already supported by getIssue, because this check probes only the nested writeback path. Distinguish a confirmed missing ref from an indeterminate read, and retry or probe the canonical projection before terminalizing.
Useful? React with 👍 / 👎.
| const NON_RETRYABLE_WRITEBACK_ERROR_PATTERN = | ||
| /GitHub writeback failed with status 4\d\d\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u |
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The blanket 4\d\d match includes transient responses such as HTTP 408 and GitHub rate-limit responses reported as 429 or 403. If publication hits one of these conditions, this change abandons the dispatch after the first attempt instead of allowing the existing retry budget to recover, losing otherwise publishable work. Restrict this pattern to statuses that actually prove the request payload is permanently invalid, such as the targeted 422 cases, while retaining retries for throttling and timeout statuses.
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1 issue found across 4 files
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="src/orchestrator/factory.ts">
<violation number="1" location="src/orchestrator/factory.ts:562">
P1: When the connected GitHub projection is temporarily unavailable during the new ref check, this pattern treats the resulting “never pushed” error as permanent and abandons the dispatch. Preserve retryability for ref-read failures by distinguishing confirmed absence from an unavailable/failed read before applying the non-retryable classification.</violation>
</file>
Reply with feedback, questions, or to request a fix.
Re-trigger cubic
| * was never pushed does not appear on a retry either. | ||
| */ | ||
| const NON_RETRYABLE_WRITEBACK_ERROR_PATTERN = | ||
| /GitHub writeback failed with status 4\d\d\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u |
There was a problem hiding this comment.
P1: When the connected GitHub projection is temporarily unavailable during the new ref check, this pattern treats the resulting “never pushed” error as permanent and abandons the dispatch. Preserve retryability for ref-read failures by distinguishing confirmed absence from an unavailable/failed read before applying the non-retryable classification.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At src/orchestrator/factory.ts, line 562:
<comment>When the connected GitHub projection is temporarily unavailable during the new ref check, this pattern treats the resulting “never pushed” error as permanent and abandons the dispatch. Preserve retryability for ref-read failures by distinguishing confirmed absence from an unavailable/failed read before applying the non-retryable classification.</comment>
<file context>
@@ -529,6 +529,39 @@ const DISPATCH_PUBLISH_MAX_ATTEMPTS = 10
+ * was never pushed does not appear on a retry either.
+ */
+const NON_RETRYABLE_WRITEBACK_ERROR_PATTERN =
+ /GitHub writeback failed with status 4\d\d\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u
+const isNonRetryablePublishError = (error: unknown): boolean =>
+ NON_RETRYABLE_WRITEBACK_ERROR_PATTERN.test(describeError(error).errorMessage)
</file context>
…453 review) Two independent P1 findings from PR #453's review (codex + cubic, both confidence 8-9), both real: - The non-retryable classifier blanket-matched every GitHub 4xx status. A 429 rate-limit or 403 secondary-rate-limit response would abandon the dispatch on its first attempt instead of letting the existing retry budget recover from what GitHub itself says to retry. Narrowed to the statuses that actually prove the payload is permanently invalid: 400, 404, 422. - The refs/heads existence check treated ANY read failure - a transport blip, an auth hiccup, the projection not yet having caught up with a branch that really was just pushed - as a confirmed-absent branch, feeding the classifier above a false "never pushed" for a genuinely publishable dispatch. Now only a CONFIRMED not-found read is reported as absent (mirroring `isMountFileNotFound` in src/cli/fleet.ts); every other failure propagates unclassified so the normal retry path gets its chance. The check also now probes both of `getIssue`'s canonical layouts (encoded owner__repo and nested owner/repo), since a workspace exposing only one must not read as "branch absent" either. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FwS4tX3fEMMwTbwCUHKvri Session-Id: 3be99500-f2e3-4163-8772-8fb6b587f9a7
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Actionable comments posted: 2
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Inline comments:
In `@src/mount/relayfile-github-connection-write.ts`:
- Line 429: Update isMountFileNotFound so a bare 404 in an unstructured error
message cannot classify a ref as absent; prefer validated structured status/code
fields and only match unambiguous not-found text. Preserve legitimate
file-not-found detection, and add a regression test covering a transport error
whose URI contains a token such as feature-404 so publishing remains retryable.
In `@src/orchestrator/factory.ts`:
- Around line 567-568: Update NON_RETRYABLE_WRITEBACK_ERROR_PATTERN so its
refusal alternative matches the general “Refusing to publish” prefix used by
`#publishImplementerPullRequest`, rather than requiring “publish GitHub PR”.
Preserve the existing status-code matching and ensure isNonRetryablePublishError
classifies both local guard failures as non-retryable.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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src/mount/relayfile-github-connection-write.test.tssrc/mount/relayfile-github-connection-write.tssrc/orchestrator/factory.test.tssrc/orchestrator/factory.ts
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1 existing issue remains and 1 new issue found across 4 files (changes from recent commits).
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="src/orchestrator/factory.ts">
<violation number="1" location="src/orchestrator/factory.ts:568">
P1: When GitHub returns 404 because the repository is temporarily unavailable through the connection or authentication view, this matcher abandons the dispatch on its first attempt. Keep 404 retryable or require a payload-specific confirmation before fast-pathing it.</violation>
</file>
Requires human review: Auto-approval blocked because this review re-detected 1 unresolved issue already reported by Cubic.
Re-trigger cubic
| * see `RelayfileGithubConnectionWrite#assertHeadRefPushed`). | ||
| */ | ||
| const NON_RETRYABLE_WRITEBACK_ERROR_PATTERN = | ||
| /GitHub writeback failed with status (?:400|404|422)\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u |
There was a problem hiding this comment.
P1: When GitHub returns 404 because the repository is temporarily unavailable through the connection or authentication view, this matcher abandons the dispatch on its first attempt. Keep 404 retryable or require a payload-specific confirmation before fast-pathing it.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At src/orchestrator/factory.ts, line 568:
<comment>When GitHub returns 404 because the repository is temporarily unavailable through the connection or authentication view, this matcher abandons the dispatch on its first attempt. Keep 404 retryable or require a payload-specific confirmation before fast-pathing it.</comment>
<file context>
@@ -546,20 +546,26 @@ const PUBLISH_NON_RETRYABLE_RELEASE_REASON = 'publish-non-retryable'
*/
const NON_RETRYABLE_WRITEBACK_ERROR_PATTERN =
- /GitHub writeback failed with status 4\d\d\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u
+ /GitHub writeback failed with status (?:400|404|422)\b|^Refusing to (?:author an unroutable GitHub writeback path|publish GitHub PR)\b/u
const isNonRetryablePublishError = (error: unknown): boolean =>
NON_RETRYABLE_WRITEBACK_ERROR_PATTERN.test(describeError(error).errorMessage)
</file context>
…eview)
Two more real findings from CodeRabbit's review of the prior commit:
- isMountFileNotFound's message fallback matched a bare \b404\b
anywhere in an error's text, so a transport error whose message
merely CONTAINS "404" (a branch name segment, an unrelated id) would
false-positive as a confirmed-absent ref and get abandoned as
non-retryable. Restricted the message fallback to unambiguous
"file not found" phrasing; structured status/code fields still match
exactly.
- NON_RETRYABLE_WRITEBACK_ERROR_PATTERN's guard alternative required
the literal "publish GitHub PR", which #publishImplementerPullRequest's
own pre-publish guards never produce (they throw
"Refusing to publish ${issueKey}: ...", interpolating the issue key
instead). Broadened to match any "Refusing to publish" prefix -
verified every production caller of that message shape is a
deterministic, permanent guard failure.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FwS4tX3fEMMwTbwCUHKvri
Session-Id: 3be99500-f2e3-4163-8772-8fb6b587f9a7
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All reported issues were addressed across 4 files (changes from recent commits).
Tip: Review your code locally with the cubic CLI to iterate faster.
Re-trigger cubic
review) Three more findings from cubic's review of the prior commit: - P2 (real regression from the prior fix): restricting the message fallback to only "file not found" missed the actual not-found phrasings a provider/transport can use for a genuinely absent ref ("ref not found", "branch not found", "404 Not Found") - a REAL unpushed branch would stop terminalizing and spend the full retry budget instead. Broadened to a ref/branch/resource-flavored "not found", or the unambiguous compound "404 not found", while keeping the #453/CodeRabbit fix for a bare wandering "404". - P3: `asRecord` duplicated this file's own `record` coercion helper for objects that are never arrays. Reuses `record` instead. - P3: the new 429 test duplicated ~55 lines of harness already in the adjacent transient-failure test. Extracted `expectTransientFailureRecovers(issue, message)` so both pin the same retry-budget semantics from one place. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FwS4tX3fEMMwTbwCUHKvri Session-Id: 3be99500-f2e3-4163-8772-8fb6b587f9a7
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1 participant
Summary
Scoped Factory-side fix from #430's suggested split (the full fix depends on
cloud#3220, which is still open and out of scope here):422 Validation Failed(or any 4xx writeback rejection, or an adapter route refusal) is rejected for its payload, not a transient control-plane condition — retrying doesn't change the outcome. Previously every publish failure, transient or not, spent the fullDISPATCH_PUBLISH_MAX_ATTEMPTSbudget (fix(dispatch): bound a PR publication that can never succeed, instead of pinning the only batch slot #440) before releasing the slot.isNonRetryablePublishErrornow classifies the failure and short-circuits straight to abandonment — releasing the slot and marking the dispatch failed with a distinctpublish-non-retryablereason — on the very first attempt, at every call site that can hit this (#abandonExhaustedPublish's charged retry drive, and its two previously-uncharged first-attempt callers).refs/heads/<headRef>existence is confirmed before opening a PR. On the remote-implementer path (headRefsupplied, noheadSha— nothing in this process could have created the branch),RelayfileGithubConnectionWrite.publishPullRequestnow reads the ref first. A missing branch now fails with "implementer branch<headRef>was never pushed to<repo>" instead of surfacing as a bare422 Validation Failedon the PR create.Together these convert the measured production outage — a poisoned
publishingrow surviving container restarts, starving every other queued dispatch behind abatchSize: 1slot — into an immediate, named-reason release.Out of scope (per #430): actually producing a branch for a remote/cloud dispatch depends on
cloud#3220(the sandbox has no push credential), which is still open.Test plan
src/mount/relayfile-github-connection-write.test.ts: added a fail-first test proving a remote-branch publish with no ref on GitHub is refused with a named reason before any PR draft is ever authored (mount.writesstays empty); updated the existing already-pushed-branch test to seed the ref so it keeps passing.src/orchestrator/factory.test.ts: addeda non-retryable writeback status abandons on the first attempt (#430)— a MUST-FIRE test proving the dispatch abandons on attempt 1 with thepublish-non-retryablerelease reason (fails onmain, which spends the full 12-attempt budget first), and a MUST-NOT-FIRE control proving a genuinely transient failure still spends the full retry budget and recovers.#440bounded-retry suite to use a genuinely transient (non-4xx) fixture, since the exact422 Validation Failedfixture it used is now fast-pathed by this change.npx tsc -p tsconfig.build.json --noEmitpasses.relayfile-github-connection-write.test.tsfull file, and the#430/#440describe blocks plus adjacent#tryPublishImplementerPrcoverage infactory.test.ts) pass locally.npm testin.github/workflows/ci.yml) green — confirming viagh run list --branch.🤖 Generated with Claude Code
https://claude.ai/code/session_01FwS4tX3fEMMwTbwCUHKvri
Summary by cubic
PR publication now abandons confirmed non-retryable failures on the first attempt instead of spending the retry budget, releasing the batch slot with a
publish-non-retryablereason (#430). Remote implementer publication also confirms the branch exists before creating a PR, replacing GitHub's generic 422 with a named missing-branch error.Bug Fixes
Written for commit f218c72. Summary will update on new commits.