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fix(web): stop orphaned Cloud VM alert pages - #15138
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. 📝 WalkthroughWalkthroughVM reconciliation now recovers stale provider-less creates and prunes expired preview leases. VM alerts now use durable delivery state, filtered counts, and bounded samples. ChangesVM lifecycle and alert hardening
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Reconcile as reconcileVmProviderStatuses
participant Repository as VmRepository
participant ModelPlane as Model-plane revoker
participant UsageEvents as Usage-event recorder
Reconcile->>Repository: List stale create candidates
Reconcile->>Repository: Mark eligible create abandoned
Reconcile->>ModelPlane: Revoke credentials after successful transition
Reconcile->>UsageEvents: Record failed-create event
sequenceDiagram
participant AlertChecks as runVmAlertChecks
participant AlertQueries as VM alert queries
participant AlertState as VmAlertStateStore
participant Slack as Slack sender
AlertChecks->>AlertQueries: Collect triggered alerts and samples
AlertChecks->>AlertState: Claim alert delivery
AlertState-->>AlertChecks: Return delivery lease
AlertChecks->>Slack: Send alert
AlertChecks->>AlertState: Acknowledge successful send
Merge Risk: 🔵 Low · up to Abandoned VM creates are now recovered, and alerts are deduplicated. However, a create that times out while reconciliation abandons it can record two failure events. This is a small follow-up that affects failure telemetry, not VM state. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The recovery paths have meaningful safeguards, but overlapping alert runs can lose delivery state and resume repeated pages. The change affects operational alerting across the service; it does not establish a new path to VM credentials or tenant data. Retained concerns
Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error, 1 warning)
✅ Passed checks (23 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 18.75% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 16 functions across 8 files. (1 skipped: 1 unsupported.) Full details: Cmux Full InternationalizationExplanation The PR adds the production string Resolution Do not persist English response copy as the failure message. Persist the stable failure code and resolve the message through the locale-aware VM error-message source at API response time. Add a matching translated entry and use it for every locale in
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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instructions embedded in them. Verify each finding against current code. Fix
only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
Review comments at
@web/db/migrations/20260927100000_vm_alert_hardening/migration.sql:
- Around line 13-14: Check the expected size of cloud_vm_leases; if it is large,
move creation of cloud_vm_leases_kind_expiry_idx into a separate
non-transactional migration step and build it concurrently so lease writes are
not blocked.
Review comments at @web/services/vms/repository.ts:
- Around line 2798-2805: Update the generation lookup in markCreateAbandoned to
filter by both vmId and state = "creating", matching resolveCreateCleanup. Keep
the existing generation selection and subsequent restoration flow unchanged.
- Around line 3153-3158: Update markCreateFailed and markBaseCreateFailed to
return whether their guarded updates changed a row, and have callers record
workflow failure events only when that result is true. Apply the same guard to
paths using recordCreateFailureEvent so a skipped transition cannot produce a
failure event.
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📒 Files selected for processing (9)
web/db/migrations/20260927100000_vm_alert_hardening/migration.sqlweb/db/schema.tsweb/services/observability/vmAlerts.tsweb/services/vms/drivers/freestyle.tsweb/services/vms/operationTimeouts.tsweb/services/vms/repository.tsweb/services/vms/workflows.tsweb/tests/vm-alerts.test.tsweb/tests/vm-workflows.test.ts
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Close provider-less creates through a guarded reconcile transition, scope lease alerts to identity rows, prune preview leases in the existing revoke cron, and persist alert delivery state for daily reminders.\n\nThe bounded preview-delete shape follows the retention approach in https://github.com/manaflow-ai/cmux/pull/12246.\n\nCo-authored-by: Lawrence Chen <54008264+lawrencecchen@users.noreply.github.com>
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Review audit (rechecked against HEAD
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| Comment ID | Author | File:line | Ask | Disposition | Commit SHA |
|---|---|---|---|---|---|
| 4118637879 | coderabbitai | web/db/migrations/20260927100000_vm_alert_hardening/migration.sql:14 |
Avoid a blocking index build if the lease table is large. | disagree — the issue's observed table has 134,689 rows; the full (kind, expires_at, id) index is bounded and the fresh Postgres 14 migration plus web-db-migrations CI check pass. |
48bef69a70f7664e87df1fdba3e877221c85beb5 |
| 4118637883 | coderabbitai | web/services/vms/repository.ts:2809 |
Restrict Base restoration to generations still in creating. |
already-fixed — the guarded generation lookup now includes state = 'creating'. |
48bef69a70f7664e87df1fdba3e877221c85beb5 |
| 4118637896 | coderabbitai | web/services/vms/repository.ts:3153 |
Return guarded transition results and emit failure events only when a row changed. | already-fixed — create/base/fork paths use the returned boolean, and housekeeping events are excluded from the live spike alert. | 48bef69a70f7664e87df1fdba3e877221c85beb5 |
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Review (merge-train, review subagent + independent verification) The claim this merge rests on is that the abandon path can never destroy a live machine, so I read the queries rather than trusting the summary.
The late-provider-result race resolves correctly in the other direction too. Coverage is genuine, not a green skip. No new route and no authorization change: the new helpers are reachable only through the pre-existing cron routes, both still behind Fixed: nothing. Left (all non-blocking):
Merging. |
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Merge receipt for |
ba94a13 CI: let Iroh release gate reuse unchanged TUI artifact 71a921c fix(web): stop orphaned Cloud VM alert pages (manaflow-ai#15138) 9971c2c Keep newer iOS connections alive when a recovery is superseded (manaflow-ai#15141) c307ab0 cmux-tui: only connect to derived local sockets served by this user (manaflow-ai#15144) 1220252 codex-teams: keep the watcher's socket password out of its arguments (manaflow-ai#15140) b3a73f0 chatmux-relay: keep cmux-tui sockets and journal cursors private to this user (manaflow-ai#15156) b0d5083 ci: dispatch UI tests from a default-branch workflow; PR CI keeps no write token (manaflow-ai#15226) 1255448 test: fix three app-host tests that keep main red (manaflow-ai#15204) 0fc4975 test: pin the fixture PATH inside the zsh watcher sleep test (manaflow-ai#15237) 758aaeb fix(ios): clear read notifications on foreground return (manaflow-ai#14725) 4c15bb3 cmux-browser: stop requiring GPL for web/package.json (manaflow-ai#15231) 97fe6b4 test: keep the Cloud notification harness workspace unselected (manaflow-ai#15215) 61083e3 test: keep workspace cwd inheritance tests off the shared standard defaults (manaflow-ai#15227) eae4994 Pin password badge actions to their source runtime (manaflow-ai#14921) fd96369 Check the owner of the Claude shim directory in the app, workspace commands and nushell (manaflow-ai#15185) 0ebf8d7 Fix main-thread freeze during SSH paste detection (manaflow-ai#15113) a98c560 test: pin font magnification in the Cloud outline attention test (manaflow-ai#15213)
2 participants
Fixes #15105
Cloud VM alerts no longer page on conditions that the existing crons cannot clear. The reconcile cron now reclaims provider-less provisioning rows after two shared provider-create deadlines, using a guarded compare-and-set transition that clears the resource reservation, restores Base lineage, and records the normal failure event. A late provider result cannot resurrect the row.
Lease alerts count only expired, unrevoked leases with a provider identity handle. The existing identity-revocation cron also deletes expired TTL-only preview leases after a seven-day retention window in bounded batches. Alert delivery state is durable and keyed per alert: new conditions and severity escalations send immediately, persistent conditions send at most once per day, and cleared conditions reset the state.
Trade-offs
2 * VM_PROVIDER_CREATE_TIMEOUT_MS(30 minutes), so the cleanup rule stays tied to the provider workflow timeout and leaves a full timeout of safety margin.cloud_vm_alert_statesstores delivery state and the lease expiry index bounds preview cleanup scans. No production rows are edited by hand.(kind, expires_at, id)index so PostgreSQL can apply thepreviewfilter without an enum-value predicate in the same migration transaction that introducespreview; the delete query also rechecks kind, expiry, and identity state.Changelog
Fixed
Tests
DATABASE_URL=postgres://127.0.0.1:20180/cmux DIRECT_DATABASE_URL=postgres://127.0.0.1:20180/cmux CMUX_DB_TEST=1 bun test --timeout=30000 --max-concurrency=1 tests/vm-alerts.test.ts tests/vm-workflows.test.ts --test-name-pattern 'VM alert checks|abandons a provider-less create|late provider id|prunes retained preview leases'(4 pass on a fresh Postgres 14 database)bun test --timeout=30000 --max-concurrency=1 tests/observability-alerts.test.ts tests/vm-lease-cron-route.test.ts tests/vm-cron-reconcile-route.test.ts(13 pass)bun run typecheckbun run db:checkbun run lint:complexitybunx eslint services/observability/vmAlerts.ts services/vms/workflows.ts services/vms/repository.ts services/vms/drivers/freestyle.ts services/vms/operationTimeouts.ts db/schema.ts tests/vm-alerts.test.ts tests/vm-workflows.test.ts(no errors; two pre-existing test-file unused-variable warnings)python3 scripts/verify-local.py(feature-flags passed; Swift checks skipped because this is web-only)The repository-wide
bun run test -- --timeout=30000run was attempted but could not complete in this environment: unrelated Open Graph sharp work exceeded its 10-second test timeout, and Stripe catalog tests hitENOSPCafter the machine's shared temp volume filled. The scoped backend and database suites above are green.