fix(branch): survive a transient control-plane 502 while polling (v0.2.8) - #267
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`insforge branch create` polls GET /projects/v1/branches/:id every 3s for up to 15 minutes, and a SINGLE 502 anywhere in that window ended the command on the spot — while the backend went on to mark the branch ready seconds later. The branch exists and bills; the CLI exited non-zero with no id in the output. Seen twice in agent-e2e (runs 31832239687 and 32055449431: CLI out at ~90s / ~97s, branch ready at ~108s / ~113s; a successful run took ~113s, so the duration itself is normal). A failed READ is not a failed branch: - add `isTransientApiError` (lib/errors.ts) — gateway 5xx, 408/429 and tagged network failures are transient; every other 4xx and any locally raised CLIError (a terminal branch state) stays terminal. deployments already carried an inline copy of this rule; it now shares the helper. - `platformFetch` attaches the HTTP status to the CLIError it throws, so a poller can tell a 502 from a 404 at all. CLIError.statusCode already existed and was already read by command telemetry — only ossFetch had been populating it. - both branch pollers (create, reset) wrap only the fetch: a transient failure costs one poll interval and nothing more. The post-timeout re-check falls back to the last observed state instead of turning a timeout into an API error about a branch that exists. Also close the same hole on the create POST, where it is worse — a 502 there orphans a billing branch with no id anywhere in the output. A gateway 5xx is the proxy reporting that IT could not complete the round trip, so it joins transport resets as an ambiguous failure eligible for the existing adopt path. The guards are unchanged (name + mode + created_at >= request time) and an unmatched search still rethrows the original error, so this cannot mask a request the backend never acted on. Bump 0.2.7 -> 0.2.8. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
WalkthroughThe change adds shared transient API error classification, preserves HTTP statuses in ChangesTransient API recovery
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The PR broadens transient-error handling, but malformed responses and other unexpected processing failures may now be retried until timeout instead of failing promptly, delaying commands and obscuring actionable errors. The classifier should restrict retries to explicitly identified transport failures before merge. Possibly related PRs
Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Greptile SummaryThe PR makes branch lifecycle polling resilient to transient control-plane failures and propagates HTTP status information needed to classify retryable responses.
Confidence Score: 5/5The PR appears safe to merge. No blocking failure remains.
|
| Filename | Overview |
|---|---|
| src/commands/branch/create.ts | Adds transient polling tolerance, bounded verdict retries, and narrowly expands ambiguous create-response adoption; the previously reported residual adoption collision is explicitly documented and deferred. |
| src/commands/branch/reset.ts | Retries transient status reads and throws when the final state cannot be confirmed, eliminating the previously reported stale-state success concern. |
| src/commands/branch/poll.ts | Introduces a bounded shared helper that retries only classified transient branch-read failures. |
| src/lib/errors.ts | Centralizes classification of network, gateway, timeout, and rate-limit failures as transient. |
| src/lib/api/platform.ts | Attaches HTTP status codes to platform API errors, including errors after authentication refresh. |
| src/lib/api/oss.ts | Wraps transport failures in tagged CLI errors so polling callers can distinguish them from parsing or application failures. |
| src/commands/deployments/deploy.ts | Replaces the deployment poller's inline retry classification with the shared transient-error predicate. |
Sequence Diagram
sequenceDiagram
participant CLI
participant Platform
participant Branch
CLI->>Platform: Create or reset branch
loop Until polling deadline
CLI->>Platform: GET branch status
alt Transient control-plane failure
Platform-->>CLI: 5xx / 408 / 429 / network error
CLI->>CLI: Wait and retry
else Terminal rejection or state
Platform-->>CLI: 4xx or deleted/conflicted
CLI-->>CLI: Fail command
else Ready
Platform-->>CLI: Branch ready
CLI-->>CLI: Complete command
end
end
CLI->>Platform: Bounded final status read
Platform-->>CLI: Final branch state
Reviews (3): Last reviewed commit: "fix(api): tag ossFetch transport failure..." | Re-trigger Greptile
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Review: fix(branch): survive a transient control-plane 502 while polling (v0.2.8)
Summary: A tightly-scoped, well-tested resilience fix — a failed read during branch-poll no longer aborts a branch that is still provisioning — with a clean helper extraction that de-duplicates the pre-existing deploy tolerance and, importantly, preserves deploy's behavior exactly.
Requirements context
No matching spec/plan found. The repo has docs/specs/ (covering only diagnose and db-migrations command designs) and no docs/superpowers/; nothing there addresses branch polling. Assessed against the PR description, the linked incident (agent-e2e runs 31832239687 / 32055449431), and InsForge/InsForge#1790.
Findings
Critical
(none)
Suggestion
- [software-eng / UX] The two branch pollers diverge in how they re-announce after recovery —
create.ts:297-322parks anUNREACHABLE_STATEsentinel inlastStateso the next successful read re-announces the true state even if unchanged, whereasreset.ts:99-121uses a separateannouncedUnreachableboolean and leaveslastStateuntouched, so it does not re-announce the state on recovery. Both are correct; the spinner/outputInfocopy is just slightly inconsistent between the two commands. Purely cosmetic — worth aligning if you touch this again, not worth blocking.
Information
- [functionality] Non-
CLIErrorthrows are transient — a slight widening of the silent-retry window in the branch pollers.isTransientApiError(src/lib/errors.ts:66-71) returnstruefor any non-CLIError. The branch pollers previously had zero tolerance (getBranchApiwas called bare), so a genuine client-side bug that throws a raw error (e.g. ares.json()SyntaxErroron a truncated proxy body, or a real programming error) would previously surface immediately and now gets retried silently for up to the full 15-minute budget. In practice this is the intended trade-off — a broken-gateway body should be retried, andplatformFetchwraps all HTTP/network failures intoCLIError— so the only thing masked is a true bug. Documented in the function's own comment; noting it only so the widened surface is a conscious choice. - [functionality]
>= 500treats permanent server errors (501/505) as transient, burning the whole poll budget before "still in state …". These statuses don't occur for these control-plane endpoints, and the prior deploy logic did the same, so this is a non-issue — flagged only for completeness.
Verification performed
- Deploy refactor is behavior-preserving. Confirmed
ossFetch(src/lib/api/oss.ts:301) always throwsCLIError(msg, 1, err.error, res.status)withstatusCodedefined andcodeset to the backend error string (neverNETWORK_ERROR_CODE), and that raw fetch failures propagate un-wrapped as non-CLIError. Mapping the old inlineisTerminalpredicate onto!isTransientApiErroryields identical outcomes for every case deploy can produce (defined-statusCode CLIErrors, locally-raised undefined-statusCode CLIErrors, and raw throws).TRANSIENT_4XX_STATUSES = {408, 429}carried over unchanged. platformFetchnow attaches status on both throw paths (src/lib/api/platform.ts:124-129retry-leg,:144main-leg), so pollers can distinguish 502 from 404.CLIError's 4th ctor arg (statusCode,src/lib/errors.ts:19) already existed and was already read by telemetry — no ripple.- Adopt path stays safe.
isAmbiguousCreateFailure(create.ts:224-228) is correctly narrower than the poll predicate — network reset or 5xx only, not 408/429 (a rate-limit on the POST means the branch was not created, so adopting would be wrong). The three guards (name + mode +created_at >= requestedAt) are unchanged, thelistBranchesApi(...).catch(() => undefined)swallows a failed lookup into a rethrow of the original error, and an unmatched search rethrows — so 5xx widening cannot mask a request the backend never acted on (create.ts:238-252). - Auth stays terminal. A 401 triggers
platformFetch's refresh-and-retry; a persistent 401 throws withstatusCode=401→isTransientApiErrorfalse → loop ends. No auth weakening. - Timeout fallback. Final re-check falls back to
lastBranchonly on a transient failure and only when a prior read succeeded (create.ts:329-332,reset.ts:135-140); a from-the-start outage withlastBranch === nullstill rethrows — matching the documented "Not covered" sustained-outage case.
Test coverage
Excellent. Regression test reproducing the incident (one 502 mid-poll → exit 0 with the ready branch), the mirror terminal case (404 → terminal after exactly one call), 5xx create-adoption, both repeated for branch reset, plus a predicate unit sweep across 500/502/503/504 / 408 / 429 / 4xx / no-status / non-CLIError. CLIError import present in create.test.ts:4. PR reports npm run lint green (792 passed, 13 skipped, eslint clean).
Security & Performance
- Security: no new user input reaching SQL/shell/HTTP; no secrets newly logged (debug path still redacts the bearer,
platform.ts:88-95); no auth/authorization check removed or weakened; no new dependencies (only the 0.2.7 → 0.2.8 version bump). - Performance: retries are bounded by the existing 15-min (branch) / 5-min (deploy) budgets and spaced by
setTimeout(POLL_INTERVAL_MS); no busy-loop, no N+1, no new per-request allocation in a hot path.
Verdict
approved (informational — human approval via the separate approve flow). Zero Critical findings; the two notes above are non-blocking. Scope is disciplined — the diff does exactly what the ticket asks and nothing more. Nice work, particularly the care to keep the deploy path bit-for-bit equivalent while extracting the shared predicate.
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Actionable comments posted: 1
🤖 Prompt for all review comments with AI agents
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Inline comments:
In `@src/lib/errors.ts`:
- Around line 66-70: Update isTransientApiError in src/lib/errors.ts:66-70 to
return false for non-CLIError values, while retaining explicit network, server,
and transient-status handling. Wrap only rejected fetch calls in ossFetch with
NETWORK_ERROR_CODE; platformFetch requires no change. Update the classifier
expectation in src/lib/errors.test.ts:118-120 and add ossFetch
transport-wrapping coverage. The call sites in
src/commands/branch/create.ts:303-306 and :329-331,
src/commands/branch/reset.ts:107-110 and :138-140, and
src/commands/deployments/deploy.ts:316-321 require no direct changes; they are
affected by the classifier and fetch-wrapper behavior.
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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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📒 Files selected for processing (9)
package.jsonsrc/commands/branch/create.test.tssrc/commands/branch/create.tssrc/commands/branch/reset.test.tssrc/commands/branch/reset.tssrc/commands/deployments/deploy.tssrc/lib/api/platform.tssrc/lib/errors.test.tssrc/lib/errors.ts
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2 issues found across 10 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/commands/branch/create.test.ts">
<violation number="1" location="src/commands/branch/create.test.ts:397">
P2: The timeout fallback — a headline behavior of this change — has no test coverage. `pollUntilReady` now has an untested branch where the budget is exhausted, the final `getBranchApi` read fails transiently, and it returns the last observed `lastBranch` instead of surfacing the API error; likewise the `UNREACHABLE_STATE` re-announce path is untested. The added tests only cover a single 502 that is immediately followed by a successful read (mid-poll skip), a terminal 404, and 5xx create adoption. None of them exhaust the poll budget while reads keep failing, so a regression that turns a timed-out branch back into an API error would pass CI. Add a test where `getBranchApi` stays transient for the full budget and assert the last observed branch state is reported (non-zero exit for a non-'ready' state) rather than an error.</violation>
</file>
<file name="src/commands/branch/reset.ts">
<violation number="1" location="src/commands/branch/reset.ts:102">
P2: When every status read is transient for the five-minute budget, `lastBranch` remains null and the timeout catch rethrows the final 502 instead of returning the valid reset snapshot. Seed the fallback from the `initial` `Branch` returned by `resetBranchApi` (or otherwise preserve that snapshot) so a reset that is still running is not reported as an API failure.</violation>
</file>
Reply with feedback, questions, or to request a fix.
Re-trigger cubic
| expect(exitCode).toBe(1); | ||
| }); | ||
|
|
||
| it('survives a transient 502 mid-poll instead of abandoning a branch that is still provisioning', async () => { |
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P2: The timeout fallback — a headline behavior of this change — has no test coverage. pollUntilReady now has an untested branch where the budget is exhausted, the final getBranchApi read fails transiently, and it returns the last observed lastBranch instead of surfacing the API error; likewise the UNREACHABLE_STATE re-announce path is untested. The added tests only cover a single 502 that is immediately followed by a successful read (mid-poll skip), a terminal 404, and 5xx create adoption. None of them exhaust the poll budget while reads keep failing, so a regression that turns a timed-out branch back into an API error would pass CI. Add a test where getBranchApi stays transient for the full budget and assert the last observed branch state is reported (non-zero exit for a non-'ready' state) rather than an error.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At src/commands/branch/create.test.ts, line 397:
<comment>The timeout fallback — a headline behavior of this change — has no test coverage. `pollUntilReady` now has an untested branch where the budget is exhausted, the final `getBranchApi` read fails transiently, and it returns the last observed `lastBranch` instead of surfacing the API error; likewise the `UNREACHABLE_STATE` re-announce path is untested. The added tests only cover a single 502 that is immediately followed by a successful read (mid-poll skip), a terminal 404, and 5xx create adoption. None of them exhaust the poll budget while reads keep failing, so a regression that turns a timed-out branch back into an API error would pass CI. Add a test where `getBranchApi` stays transient for the full budget and assert the last observed branch state is reported (non-zero exit for a non-'ready' state) rather than an error.</comment>
<file context>
@@ -394,6 +394,118 @@ describe('branch create', () => {
expect(exitCode).toBe(1);
});
+ it('survives a transient 502 mid-poll instead of abandoning a branch that is still provisioning', async () => {
+ // The reported incident: the control plane 502s once at ~90s, the CLI exits
+ // non-zero, and the backend marks the branch ready ~15s later — leaving a
</file context>
| ): Promise<Branch> { | ||
| const start = Date.now(); | ||
| let lastState = startingState; | ||
| let lastBranch: Branch | null = null; |
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P2: When every status read is transient for the five-minute budget, lastBranch remains null and the timeout catch rethrows the final 502 instead of returning the valid reset snapshot. Seed the fallback from the initial Branch returned by resetBranchApi (or otherwise preserve that snapshot) so a reset that is still running is not reported as an API failure.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At src/commands/branch/reset.ts, line 102:
<comment>When every status read is transient for the five-minute budget, `lastBranch` remains null and the timeout catch rethrows the final 502 instead of returning the valid reset snapshot. Seed the fallback from the `initial` `Branch` returned by `resetBranchApi` (or otherwise preserve that snapshot) so a reset that is still running is not reported as an API failure.</comment>
<file context>
@@ -91,9 +99,24 @@ async function pollUntilReady(
): Promise<Branch> {
const start = Date.now();
let lastState = startingState;
+ let lastBranch: Branch | null = null;
+ let announcedUnreachable = false;
if (showProgress) outputInfo(` state: ${startingState}…`);
</file context>
Three review findings, two addressed in code: 1. Greptile P1 — uncorrelated branch adoption. Accepting ANY 5xx on the create POST widened the window in which a collaborator's same-name, same-mode branch inside the skew window could be adopted, and with the default --switch that writes their identity into local config. Narrow adoption to the PROXY statuses (502/503/504) plus transport resets. A plain 500 is the application's own answer — more likely authoritative than lost — and 408/429 mean the POST was refused, so nothing was created to adopt. Re-reading a status after a 500 is free; adopting after one is not, so the poll predicate stays wider than this one. 2. Greptile P1 — stale reset state returns success. `branch reset` exits 0 on any non-ready state, so substituting the last polled state after an unreadable final check could report a branch that went deleted/conflicted as "still resetting" and exit successfully. It now raises a "could not confirm" error naming the last observed state. create keeps its fallback: it must still print the branch id/appkey so an orphan can be found, and every non-'ready' state there exits non-zero, so a stale label cannot manufacture success. 3. CodeRabbit — unclassified throws were transient. Valid in the branch pollers, which had zero tolerance before: a res.json() parse failure or a plain bug would now be retried for the full 15-minute budget. `isTransientApiError` no longer classifies non-CLIError throws as transient. Their proposed remedy (wrap ossFetch rejections) is not taken — it would flip deployment polling's raw fetch rejections to terminal, reintroducing this very bug class there — so deploy keeps its own explicit tolerance for unwrapped throws at the call site. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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All reported issues were addressed across 7 files (changes from recent commits).
Reply with feedback, questions, or to request a fix.
Re-trigger cubic
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Review: fix(branch): survive a transient control-plane 502 while polling (v0.2.8)
Summary: A well-scoped, well-tested resilience fix that makes the branch create/branch reset pollers (and the create POST) tolerate transient control-plane failures instead of orphaning a real, billing branch behind a non-zero exit — no blocking issues found.
Requirements context
No /docs/superpowers/ directory exists in this repo, and the only specs under docs/specs/ cover the diagnose and db-migrations commands — no matching spec/plan found, so this was assessed against the PR description, the linked agent-e2e incident runs, and the surrounding code.
Findings
Critical
(none)
Suggestion
- Functionality —
src/commands/branch/create.ts:337-353(timeout fallback can mislabel a just-ready branch). When the 15-minute budget is exhausted and the final re-check itself 502s, the poll returns the stalelastBranch. If the branch flipped toreadyright at the deadline, the command reports it as "still<non-ready>" and exits non-zero. This is an extreme double-edge (budget exhaustion + final read transiently failing), it still prints the id/appkey so the caller can recover, and the code comment calls it out honestly ("the worst case is a stale label on a failure"). Not blocking — noting it because the one case it can invert is a genuine success, not only "a failure that was already going to fail." A follow-up could re-attempt the final read a few times before falling back.
Information
- Software engineering — test coverage is strong. The regression test reproduces the reported incident (one 502 mid-poll → still exits 0 with the ready branch), the mirror case (404 stays terminal after exactly one call), 5xx adoption vs. plain-500 non-adoption on create, the predicate unit tests span 5xx/408/429/4xx/no-status/non-
CLIError, andresetgets both the survive-502 and the fail-loudly-when-unconfirmable cases. This is exactly the coverage that would have caught the original bug. - Software engineering —
src/lib/errors.ts:72-77vssrc/commands/branch/create.ts:235-239. Two nearby predicates handle 5xx differently on purpose:isTransientApiErrorretries all 5xx (including 500) for reads, whileisAmbiguousCreateFailuredeliberately narrows adoption to proxy statuses{502,503,504}and excludes 500/408/429. The asymmetry is intentional and thoroughly documented at both sites (a plain 500 is the app's own answer; adopting on it would widen the same-name collision window) — flagging only so a future reader doesn't "unify" them. - Performance / behavior change — sustained-outage cost. Previously a single 5xx aborted the poll immediately; now a sustained control-plane 5xx keeps the create poller reading every 3s for the full 15-minute budget (~300 GETs) before timing out. This is the intended tradeoff and the PR documents it under "Not covered." Bounded by
POLL_TIMEOUT_MS, no unbounded loop. - Functionality — verified the "nothing else changes behavior" claim.
platformFetchnow attachesstatusCodeto theCLIErrorit throws. I checked everyerr.statusCode === …branch in the repo (config/apply|export|plan,diagnose/advisorisOssAdvisorRouteMissing,domains/index,functions/deploy,apify-token) — all of them branch onossFetcherrors, and the advisor'splatformFetchcalls usepassThroughStatuses/res.statusrather than a thrown-errorstatusCode. The only new readers of a platform-errorstatusCodeare command telemetry (benign, arguably more accurate) and the new poll logic. Claim holds. - Security. No security-relevant changes: no new user input reaching SQL/shell/HTTP, no secrets or PII newly logged (error messages carry only the already-known
branchIdand an HTTP status), no auth/authz change, and no new dependencies (version-only bump 0.2.7 → 0.2.8). - Software engineering — clean refactors.
NETWORK_ERROR_CODEmoved tolib/errors.tsand re-exported fromlib/api/platform.tsto avoid a circular import;deployments/deploy.tsdrops its inlineTRANSIENT_4XX_STATUSEScopy and shares the helper, with a precise comment explaining why theossFetchcall site keeps raw fetch rejections retryable (err instanceof CLIError && !isTransientApiError(err)), preserving prior behavior for non-CLIErrorthrows.
Verdict
approved (informational — the human still gives the explicit GitHub approval via the approve flow). Zero Critical findings; the Suggestion and Information items are non-blocking. Posted as a COMMENT per the verdict rule.
Second review round — cubic P2/P2/P3 plus jwfing's suggestion. 1. cubic P2 (deploy.ts) — unclassified throws were retried for the whole poll window. The real cause is that `ossFetch` was the only client that let Node's bare "fetch failed" through, so its callers had to treat EVERY unclassified throw as possibly-the-network. It now tags transport failures as CLIError(NETWORK_ERROR_CODE) with a formatted message, exactly like `platformFetch` and `submitFeedback` already do. The deployment poller drops its special case as a result: a malformed status body now fails on the first read instead of being re-read for five minutes and then throwing a contextless TypeError at the timeout. Users also stop seeing "fetch failed" for DNS/TLS/proxy problems on every self-hosted command. 2. cubic P2 (reset.test.ts) — correct: the stale-state test rejected every read, so `lastBranch` stayed null and the substitution path it was named for was never entered; it passed under both the correct and the buggy implementation. It now polls 'resetting' successfully three times before the reads start failing, so there IS a stale state to substitute and the test fails if one is. 3. jwfing suggestion (create.ts) — the post-timeout read decides the verdict, and a branch that reached 'ready' right at the deadline was reported as stuck if that single read 502'd, inverting a genuine success. Both pollers now retry it (3 attempts, one poll interval apart) via a shared `readBranchWithRetry`, and the create comment no longer claims a stale label can only mislabel an already-failing run. 4. cubic P3 (reset.ts) — the "could not confirm" diagnostic printed the internal branch id; it now names the branch the user asked for. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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1 issue found across 8 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/commands/branch/reset.test.ts">
<violation number="1" location="src/commands/branch/reset.test.ts:237">
P3: The new verdict-read test is coupled to exact magic numbers (100 poll iterations / call #101 = the verdict read) that only line up because reset.ts happens to use POLL_TIMEOUT_MS 300000 and POLL_INTERVAL_MS 3000. If either constant changes, the 502 silently stops landing on the verdict read and instead lands mid-poll, where it is tolerated by the loop anyway — so the test keeps passing without guarding the retry path it is supposed to protect. Name the threshold with a comment tying it to the poll budget (or export/reference the constants) so the coupling is explicit and breaks loudly instead of silently.</violation>
</file>
Tip: Review your code locally with the cubic CLI to iterate faster.
Re-trigger cubic
| // Non-terminal for the whole poll window, then one 502 on the verdict | ||
| // read, then 'ready' — the state flipped just as the budget ran out. | ||
| const call = getBranchApi.mock.calls.length; | ||
| if (call <= 100) return { ...ready, branch_state: 'resetting' }; |
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P3: The new verdict-read test is coupled to exact magic numbers (100 poll iterations / call #101 = the verdict read) that only line up because reset.ts happens to use POLL_TIMEOUT_MS 300000 and POLL_INTERVAL_MS 3000. If either constant changes, the 502 silently stops landing on the verdict read and instead lands mid-poll, where it is tolerated by the loop anyway — so the test keeps passing without guarding the retry path it is supposed to protect. Name the threshold with a comment tying it to the poll budget (or export/reference the constants) so the coupling is explicit and breaks loudly instead of silently.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At src/commands/branch/reset.test.ts, line 237:
<comment>The new verdict-read test is coupled to exact magic numbers (100 poll iterations / call #101 = the verdict read) that only line up because reset.ts happens to use POLL_TIMEOUT_MS 300000 and POLL_INTERVAL_MS 3000. If either constant changes, the 502 silently stops landing on the verdict read and instead lands mid-poll, where it is tolerated by the loop anyway — so the test keeps passing without guarding the retry path it is supposed to protect. Name the threshold with a comment tying it to the poll budget (or export/reference the constants) so the coupling is explicit and breaks loudly instead of silently.</comment>
<file context>
@@ -200,10 +214,49 @@ describe('branch reset', () => {
+ // Non-terminal for the whole poll window, then one 502 on the verdict
+ // read, then 'ready' — the state flipped just as the budget ran out.
+ const call = getBranchApi.mock.calls.length;
+ if (call <= 100) return { ...ready, branch_state: 'resetting' };
+ if (call === 101) throw new CLIError('Request failed: 502', 1, undefined, 502);
+ return ready;
</file context>
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The bug
insforge branch createpollsGET /projects/v1/branches/:idevery 3s for up to 15 minutes. A single 502 anywhere in that window ended the command on the spot — while the backend went on to mark the branch ready seconds later. The branch exists and bills; the CLI exited non-zero with no id in the output.Reported from agent-e2e, and confirmed in the code —
pollUntilReadycalledgetBranchApibare, andplatformFetchthrows on any non-ok response with no retry.318322396873205544943132005660955(green)The duration itself is normal — the third row is a successful run taking the same ~113s. This is a CLI resilience bug, not an agent-e2e retry problem.
Same bug existed in
branch reset(identical poll, same endpoint).waitUntilServingwas already tolerant, anddeployments deployalready had exactly this tolerance — the branch pollers were the odd ones out.The fix
A failed read is not a failed branch.
isTransientApiError(lib/errors.ts) — gateway 5xx, 408/429, and tagged network failures are transient; every other 4xx and any locally raisedCLIError(e.g. a terminaldeleted/conflictedstate) stays terminal, so a real answer still ends the loop on the first call.deployments/deploy.tscarried an inline copy of this rule and now shares the helper.platformFetchattaches the HTTP status to theCLIErrorit throws, so a poller can tell a 502 from a 404 at all.CLIError.statusCodealready existed and was already read by command telemetry — onlyossFetchhad been populating it. No existingstatusCodecheck reads platform errors, so nothing else changes behavior.Also: the same hole on the create
POSTA 502 there is worse — it orphans a billing branch with no id anywhere in the output, which is the exact harm the existing adopt path was built to prevent. A gateway 5xx is the proxy reporting that it could not complete the round trip, so it now joins transport resets as an ambiguous failure eligible for adoption. Guards are unchanged (name + mode +
created_at >= requestedAt), and an unmatched search still rethrows the original error — so this cannot mask a request the backend never acted on.Tests
branch resetCLIErrornpm run lint(vitest + eslint): 792 passed, 13 skipped, eslint clean.Not covered
A sustained control-plane outage across the whole 15-minute budget still ends in "creation failed" without echoing the branch id. Narrowing that would mean distinguishing it from a genuine
deleted/conflictedfailure, whose message is accurate today — left for a follow-up.No
insforge-cliskill update needed: no flags, commands, or output shapes changed.Bump 0.2.7 → 0.2.8.
🤖 Generated with Claude Code
Summary by cubic
Tolerates transient failures while polling branches and aligns deployment polling with the same rules. Previously, a single 502 on
GET /projects/v1/branches/:idabortedinsforge branch create/branch reset, and deployment polls retried unclassified errors for the whole window; now pollers retry only classified-transient reads and fail on real rejections.isTransientApiError: all 5xx, 408/429, and tagged network failures are transient; other 4xx, locally raisedCLIErrors, and non-CLIErrorthrows are terminal.platformFetchnow setsCLIError.statusCode;ossFetchnow tags transport failures asCLIError(NETWORK_ERROR_CODE)with an actionable message.branch create/resetpollers wrap only the read; transient failures cost one interval and continue. The final verdict read is retried; on timeout, create falls back to the last observed state to emit id/appkey, while reset fails loudly if the final state cannot be confirmed.POST: adoption is limited to ambiguous failures (transport resets and proxy 502/503/504). Plain 500 and 408/429 rethrow unchanged. Guards remain name, mode, andcreated_at >= request time.deployments deploypoller switches toisTransientApiError; malformed status bodies and other non-transient errors now fail fast instead of being retried for the full window.Review and rollout
ossFetchtransport tagging, final-read retry helper, and the narrower create‑adoption predicate.Written for commit fbffb74. Summary will update on new commits.