fix(cli): report the engine's failure cause with DEPLOY.ENGINE_FAILED - #326
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When alchemy fails, the reason (the failed resource row and the final error with its cause chain) is only printed to the terminal or CI log. The generated stack file now calls captureEngineFailure(), which keeps a bounded tail of what the child logs through console and, on a non-zero exit, writes the cause beside the existing result file. It captures console rather than the output streams because alchemy logs a failed apply to stdout when it is not on a terminal, and under Bun console does not go through process.stdout.write. Output still reaches the terminal unchanged. Before the text is written, ANSI codes and stack frames are dropped, credentials are redacted (secret-named env values, the service token, preflight payloads, bearer tokens, JWTs, URL passwords, token=value pairs) and the cause is capped at 1000 characters. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Kristof Siket <siket@prisma.io>
DEPLOY.ENGINE_FAILED said only "alchemy deploy exited with status 1.", and that is the message the build report sends to Prisma Cloud. The executor now reads the cause the child recorded and appends it after the status sentence, so text searches for that sentence still match, and puts it in meta.engineCause. The build report's failingStep stays DEPLOY.ENGINE_FAILED and its errorMessage now carries the cause. Deploy and destroy share this path. Exit codes, terminal output and the reproduce diagnostics are unchanged; the cause file is removed with the result file. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Kristof Siket <siket@prisma.io>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Kristof Siket <siket@prisma.io>
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✅ Gizmo reviewed 9b44fbf — posted 0 inline comment(s) this pass. Open findings: none Change walkthroughThis PR captures the deploy engine's failure cause inside the alchemy child process and surfaces it to Prisma Cloud, so Child-side capture — deployment-summary.ts:124 mirrors the existing deployment-summary protocol: the parent already passes the result-file path via Parent-side reporting — execute-deploy-destroy.ts:549 reads the cause only on the non-zero-exit branch and appends it after the status sentence; the result file's pid/uuid name means no stale-cause reads across runs, and the Version skew — generate-stack.ts:78 switches the generated stack file to a namespace import with an optional Docs and tests — the deploying guide and core-concepts skill were updated to describe the enriched message. Tests cover extraction from real alchemy output, redaction, the cap, a real child process round-trip, and the parent's deploy/destroy/signal/build-report paths. |
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Summary by CodeRabbit
WalkthroughThe CLI captures deploy-engine output and extracts a failure cause when the child process exits unsuccessfully. It redacts recognized secrets, limits the cause to 1,000 characters, and stores it in a sidecar file. Deploy and destroy operations add an available cause to failure messages, and deploy failures include cause metadata. Tests and documentation cover these changes. Priority: ⬇️ Low Merge Risk: 🔵 Low · up to Failure reporting can expose a credential fragment when unusually large console output crosses the capture boundary. Redact captured output before truncation to close this bounded privacy gap. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
✨ Simplify code
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@packages/0-framework/3-tooling/cli/src/deployment-summary.ts:
- Around line 110-145: In captureEngineFailure, redact each formatted console
record using the current environment before appending it to tail and applying
OUTPUT_TAIL_LIMIT, so truncation cannot leave an unredacted secret suffix. Keep
passing the original arguments to console unchanged.
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docs/guides/deploying.mdpackages/0-framework/3-tooling/cli/src/__tests__/deployment-summary.test.tspackages/0-framework/3-tooling/cli/src/__tests__/generate-stack.test.tspackages/0-framework/3-tooling/cli/src/deployment-summary.tspackages/0-framework/3-tooling/cli/src/exports/render-deployment.tspackages/0-framework/3-tooling/cli/src/generate-stack.tspackages/0-framework/3-tooling/cli/src/operations/__tests__/operations.test.tspackages/0-framework/3-tooling/cli/src/operations/execute-deploy-destroy.tsskills/prisma-composer-core-concepts/SKILL.md
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… cause capture - Import the report module as a namespace and call captureEngineFailure optionally, so an app pinned to an older @prisma/composer still deploys. - Redact each console record before it enters the bounded tail, so the tail cut cannot keep the end of a secret. - Read the recorded cause only on a non-zero exit: a signal-killed child never runs its exit hook. - Use a plain fake value for the Stripe secret test fixture. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Kristof Siket <siket@prisma.io>
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New findings: 🟡 2 minor · trace
Findings outside the diff
- 🟡 Minor · security packages/0-framework/3-tooling/cli/src/deployment-summary.ts — Secret redaction misses camelCase keys like
authTokenandsessionToken
The key=value pattern requires the keyword to start at a word boundary, optionally preceded by a_/--separated prefix, so camelCase compounds are missed:apiKey,accessKeyandprivateKeyare covered via their[_-]?alternations, butauthToken: …,sessionToken=…or{"authToken": "…"}pass through unredacted (verified by running the pattern).authTokencontains two of the documented secret words, so this falls outside the PR's stated known gap ("a name with none of the secret words above"). Such text reaches Prisma Cloud viameta.engineCauseand the build'serrorMessage.
Recommended fix: Extend the keyword alternation the wayapi[_-]?keyalready handlesapiKey: allow a camelCase run before the keyword, e.g. change(?:token|secret|password|passwd|api[_-]?key|access[_-]?key|private[_-]?key)to(?:[a-z]*)?(?:token|secret|password|passwd|api[_-]?key|access[_-]?key|private[_-]?key). The leading\band the[:=]that must immediately follow the keyword keep false positives liketokenize:out. - 🟡 Minor · consistency packages/0-framework/3-tooling/cli/src/deployment-summary.ts — Extraction drops WARN lines, not just info logs, though the stated contract says only info logs
engineFailureCauseclassifies every recognized Effect log level that is not ERROR/FATAL asinfo(info: !failure && level !== undefined), so WARN lines after the first failure line are discarded. The function's docstring and the PR description say only "info logs" are dropped, so a warn (for example a retry/timeout notice explaining the failure) silently disappears from the cause. The last-five-lines fallback keeps warns, so the two paths are also inconsistent with each other.
Recommended fix: Either keep WARN lines after the first failure line (e.g.info: level === 'INFO' || level === 'DEBUG') or restate the docstring and PR description as dropping "non-error logs".
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Linked issue
n/a — no issue filed. The problem comes from production deploy failures on Prisma Cloud (numbers below).
Summary
When the deploy engine fails, Composer reports
DEPLOY.ENGINE_FAILEDwith onlyalchemy deploy exited with status 1.The real cause (which resource failed and the error alchemy printed, for example an HTTP 409 from the Prisma Cloud API, a lease conflict or a timeout) goes to the terminal or CI log. It never reaches Prisma Cloud. This is the largest deploy failure bucket in production: 49 of 155 customer deploy failures in 48 hours. In 19 of those 49, the new deployment had already been promoted, so the deploy worked but was reported as failed. We cannot fix these without the cause.This PR puts the cause into the
DEPLOY.ENGINE_FAILEDmessage and intometa.engineCause. The build report sends that message as the build'serrorMessage, so Prisma Cloud now stores it too.What changed
.prisma-composer/alchemy.run.tsnow callscaptureEngineFailure()from@prisma/composer/report. This follows how the deployment summary already works: the parent passes the result-file path inPRISMA_COMPOSER_DEPLOYMENT_RESULT_FILE, and the child writes the file.captureEngineFailure()keeps the last 64 KiB of what the child logs throughconsoleand passes every call through unchanged. On a non-zero exit, it writes the cause to<result file>.failure.txt.consoleand not stderr. I ran a failing stack through realalchemy deploy --yes(beta.78) under Node and under Bun. When stdout is not a terminal, alchemy logs everything to stdout, including the failed resource row and the final error. Only its "new version available" notice goes to stderr. Also, under Bun,console.logdoes not go throughprocess.stdout.write. Capturingconsolegave the same result on both runtimes.[web] fail — …), anERRORlog, or anerror:line. Drop blank lines, stack frames and info logs. If there is no failure line, take the last five lines. ANSI codes and other control characters are stripped.meta.engineCause. The cause file is removed together with the result file.failingStepstaysDEPLOY.ENGINE_FAILED.destroyuses the same path, so preview teardown gets the same behaviour.reproduceCommanddiagnostics are unchanged. The CLI still settles a failed converge with the child's exit status, so the message does not show up in the terminal. It goes to the build report, the run report and@prisma/composer/controlcallers.Example
This is from a real
alchemy deployrun, with a resource whose create threw an error that included an auth header.Before:
After:
Redaction
Redaction runs in the child, before the cause is written. The child's environment holds everything the parent passed plus the credential the CLI engine adds (
PRISMA_SERVICE_TOKEN). The following are replaced with[redacted]:TOKEN,SECRET,PASSWORD,PASSWD,PRIVATE,CREDENTIAL,AUTH,API_KEY,ACCESS_KEY,*_KEY,DATABASE_URL,*_DSN, plus everyPRISMA_COMPOSER_PREFLIGHT_*payload. Values shorter than 8 characters are skipped.Bearer …andBasic …tokens, and JWTs (eyJ….….…).postgres://user:[redacted]@host).token=…,secret: …,password=…,api_key=…,access_key=…andprivate_key=…pairs, including JSON.Redaction runs before the cap, so a secret cut off by the cap is never sent half-redacted.
Length cap
The cause is capped at 1000 characters (it ends with
…when it is cut). The Management API'sUpdateBuildInputSchema(services/management-api/models/v1/builds.ts) limitserrorMessageto 5000 andfailingStepto 500. The existingtruncate(message, 5000)in the reporter still applies.Testing performed
bun testfor@internal/cli(via turbo): 279 pass, 0 fail.src/__tests__/deployment-summary.test.tscovers:error:line caseoperations.test.tscovers:meta.engineCause, unchanged diagnostics, file cleanup)failingStepanderrorMessagegenerate-stack.test.tschecks that the capture runs beforelower().pnpm turbo run typecheckfor@internal/cli,@prisma/composerand@prisma/composer-cli: pass.pnpm lint(no new diagnostics),pnpm lint:casts(delta 0),pnpm lint:depsandscripts/check-family-static-graph.mjs: pass.alchemy deploy --yesunder Node and under Bun. Both wrote the cause shown above.How to verify
DEPLOY.ENGINE_FAILEDmessage in the run report (PRISMA_COMPOSER_REPORT_FILE), or the build's error message in Prisma Cloud. It should start withalchemy deploy exited with status 1.and then show the engine's error lines, with no credentials.Checklist
git commit -s) per the DCO.Notes for the reviewer
{ resource, message }from the child. Alchemy (beta.78) catches each resource failure inside its apply. It reports the failure only to its own CLI renderer and then logs the combined cause. It offers no hook that the stack module can observe, and the Prisma Cloud providers are upstreamalchemy/Prismaones. The child's log lines are the only in-process source, so the cause is text. The failed resource is still named in the[web] fail — …row.spawnChild, with inherited stdio. When Composer runs inside theprismabin, that code belongs to theprismaCLI, not this repo. Piping stdio would also change whether the child sees a terminal, which changes alchemy's output. The child-side capture works under every host and leaves stdio alone.SIGKILLrecords nothing, so the message is the same as before.consolelogs are captured, which still includes the final error.captureEngineFailureis a new named export on@prisma/composer/report, the entry that only the generated stack file imports.🤖 Generated with Claude Code