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feat(automate): resolve observability build id to hashed build id for listSessions - #401

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feat/resolve-hashed-build-id-from-observability
Sep 9, 2026
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feat(automate): resolve observability build id to hashed build id for listSessions#401
gaurav-singh-9227 merged 4 commits into
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feat/resolve-hashed-build-id-from-observability

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@gaurav-singh-9227 gaurav-singh-9227 commented Sep 8, 2026

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Why

listSessions needs the Automate / App Automate hashed build id, but the observability build API never returns it. Users starting from getBuildId / listBuildId (observability ids) had no way to reach listSessions. The original PR (#390) bridged this by scanning the 100 most recent REST builds and matching on name/time, which breaks for older builds and repeated CI build names.

What

Resolve an observability build id to the hashed build id in two deterministic REST calls:

  1. Take any session_id from the build's test runs (/ext/v1/builds/{id}/testRuns).
  2. Read build_hashed_id from that session's detail endpoint (/automate/sessions/{id}.json or the App Automate equivalent).

No scanning, no name/time matching, no new backend endpoints required.

  • listSessions accepts either the hashed build id or the observability build id. Observability ids are usually UUIDs but can also be 40-char hex (same shape as hashed ids), so the tool tries the REST list first and falls back to resolution on an unknown-build 404. UUID-shaped ids skip straight to resolution. The response leads with the resolved hashed id.
  • fetchBuildInsights falls back to the same resolver and now reports hashed_id and session_type. Resolution failures never block the insights payload.
  • resolveAppAutomateBuildId (used by getFailureLogs) delegates to the shared resolver — one implementation of the session → build lookup.
  • Builds with no BrowserStack sessions (e.g. JUnit uploads) get a clear message instead of an opaque 404.
  • New typed UnknownBuildError so the fallback only fires on a real 404, never on auth/server errors.

Verified

  • npm run build passes: lint, prettier, 409 tests (36 files), tsc.
  • Live, against a real Automate build:
    • resolver output matched the REST builds.json hashed id exactly
    • listSessions with the observability id resolved and returned real sessions
    • fetchBuildInsights returned hashed_id + session_type
  • The live run caught that observability ids can be 40-char hex (not UUID); the 404 fallback in the second commit fixes that.
  • Not covered live: App Automate path (no observability-linked App Automate build available to test against). Code path is identical apart from host; the Rails serializer sets build_hashed_id for both products.

Notes

  • Tool prompt / .describe() strings stay within the context-window budget.
  • No process-global state; safe for the multi-tenant remote wrapper.
  • build_hashed_id is present in the Automate session REST response but not in the public docs — worth a heads-up to the Automate API owners that we depend on it.

🤖 Generated with Claude Code

Summary by CodeRabbit

  • New Features

    • Build-related tools now accept observability build IDs and automatically resolve them to the corresponding build.
    • Build insights now include the resolved hashed build ID and session type when available.
    • Improved support for both Automate and App Automate session types.
  • Bug Fixes

    • Clearer errors are returned when no matching build can be found.
    • Build lookup now handles alternative ID formats and resolution fallbacks more reliably.
  • Documentation

    • Updated guidance for supported build IDs and returned build insight fields.

gaurav-singh-9227 and others added 2 commits September 8, 2026 23:31
listSessions and fetchBuildInsights previously required the Automate /
App Automate hashed build id, but the observability build API never
returns it, so users starting from getBuildId / listBuildId had no way
to reach listSessions.

Resolve it deterministically in two REST calls: take any session id from
the build's test runs, then read `build_hashed_id` from that session's
detail endpoint. No scanning of recent builds, no name/time matching.

- listSessions accepts the observability build UUID and resolves it
  (with the given sessionType) before listing; the response notes the
  resolved hashed id.
- fetchBuildInsights falls back to the same resolver and now reports
  `hashed_id` and `session_type`; resolution failures never block the
  insights payload.
- resolveAppAutomateBuildId delegates to the shared resolver.
- Clear error when a build has no BrowserStack sessions (e.g. JUnit
  uploads), instead of an opaque 404.

Refs PMAA-313

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Live testing showed observability build ids are not always UUIDs; some
are 40-char hex, indistinguishable by shape from Automate hashed ids.
listSessions now tries the REST session list first and, on a 404, falls
back to resolving the id as an observability build before retrying. If
resolution also fails, the original 404 is surfaced. UUID-shaped ids
still skip straight to resolution.

Adds a typed UnknownBuildError so the fallback only triggers on a real
unknown-build 404, never on auth or server errors.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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📝 Walkthrough

Walkthrough

The change adds observability build ID resolution for session listing and build insights. It supports Automate and App Automate sessions, paginated lookup, hashed ID extraction, fallback handling, updated errors, documentation, and test coverage.

Changes

Observability build resolution

Layer / File(s) Summary
Build ID resolver
src/tools/automate-utils/resolve-hashed-build-id.ts, tests/tools/resolve-hashed-build-id.test.ts
The resolver validates ID formats, finds sessions through paginated test runs, retrieves build_hashed_id, supports session types, and handles lookup failures.
Session listing integration
src/tools/automate-utils/list-session-ids.ts, src/tools/automate.ts, tests/tools/list-session-ids.test.ts
listSessionIdsTool accepts observability IDs, retries with resolved hashed IDs after unknown-build responses, and reports resolution results.
Insights and App Automate integration
src/tools/build-insights.ts, src/tools/failurelogs-utils/resolve-app-build-id.ts, tests/tools/buildInsights.test.ts, README.md
Build insights resolve missing hashed IDs and return session_type. App Automate build handling uses the shared resolver. Documentation describes both fields and supported ID formats.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: 🔵 Low · up to 7298e

Builds with sessions beyond the scan cap can be reported as having none, and build-insights calls may take longer than necessary. The risks are bounded but merit correction.

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant listSessionIdsTool
  participant resolveHashedBuildId
  participant ObservabilityTestRuns
  participant SessionDetails
  Client->>listSessionIdsTool: provide observability build ID
  listSessionIdsTool->>resolveHashedBuildId: resolve build ID
  resolveHashedBuildId->>ObservabilityTestRuns: find session
  ObservabilityTestRuns-->>resolveHashedBuildId: return session ID
  resolveHashedBuildId->>SessionDetails: fetch session details
  SessionDetails-->>resolveHashedBuildId: return build_hashed_id and session type
  resolveHashedBuildId-->>listSessionIdsTool: return resolved build data
  listSessionIdsTool-->>Client: list sessions with resolution note
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🚥 Pre-merge checks | ✅ 4
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly and concisely describes the primary change: resolving observability build IDs to hashed build IDs for listSessions.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
✨ Finishing Touches
📝 Generate docstrings
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  • Commit on current branch
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch feat/resolve-hashed-build-id-from-observability

A rabbit finds a build in flight
Through session paths from left to right
Hashes bloom from IDs unknown
App and Automate share one stone
Insights carry the session type
And tests guard every hop and swipe

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents
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Inline comments:
In `@src/tools/automate-utils/resolve-hashed-build-id.ts`:
- Around line 129-132: Update findSessionIdForObservabilityBuild and
resolveHashedBuildId so exhausting MAX_TEST_RUN_PAGES is distinguishable from
completing the API scan without finding sessions. Use the API’s
has_next/next_page state to preserve a page-cap result, and have
listSessionIdsTool report that the scan limit was reached instead of treating a
later-page session as absent.

In `@src/tools/build-insights.ts`:
- Around line 97-102: Update fetchBuildInsightsTool so resolveHashedBuildId
starts concurrently within the existing Promise.all alongside the insights
requests, using a caught promise to preserve resolver-error handling. In
resolveInsightsHashedId, prefer a valid value from
extractHashedBuildId(buildData); otherwise retain the current resolver fallback
and warning behavior.

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📥 Commits

Reviewing files that changed from the base of the PR and between 5ac2f96 and 7298e49.

📒 Files selected for processing (9)
  • README.md
  • src/tools/automate-utils/list-session-ids.ts
  • src/tools/automate-utils/resolve-hashed-build-id.ts
  • src/tools/automate.ts
  • src/tools/build-insights.ts
  • src/tools/failurelogs-utils/resolve-app-build-id.ts
  • tests/tools/buildInsights.test.ts
  • tests/tools/list-session-ids.test.ts
  • tests/tools/resolve-hashed-build-id.test.ts

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📜 Review details
🧰 Additional context used
🪛 ast-grep (0.45.2)
src/tools/automate-utils/resolve-hashed-build-id.ts

[warning] 69-71: Avoid logging sensitive data
Context: logger.warn(
Could not resolve build id for ${sessionType} session ${sessionId}: ${response.status},
)
Note: [CWE-532] Insertion of Sensitive Information into Log File.

(log-sensitive-data-typescript)

🪛 markdownlint-cli2 (0.23.2)
README.md

[warning] 429-429: Ordered list item prefix
Expected: 1; Actual: 18; Style: 1/1/1

(MD029, ol-prefix)


[warning] 447-447: Ordered list item prefix
Expected: 1; Actual: 20; Style: 1/1/1

(MD029, ol-prefix)

🔇 Additional comments (12)
src/tools/automate-utils/resolve-hashed-build-id.ts (2)

30-45: LGTM!

Also applies to: 52-81, 148-155, 164-183


116-118: 🎯 Functional Correctness

No change needed: extractTestIds already filters "null" session IDs.

extractSessionId returns undefined for empty strings and "null". extractTestIds omits session_id when normalization fails, so .find((test) => test.session_id) cannot select "null".

tests/tools/resolve-hashed-build-id.test.ts (1)

70-248: LGTM!

src/tools/build-insights.ts (1)

8-8: LGTM!

Also applies to: 28-32, 53-53, 134-134

src/tools/failurelogs-utils/resolve-app-build-id.ts (1)

1-1: LGTM!

Also applies to: 3-3, 9-9

tests/tools/buildInsights.test.ts (1)

11-11: LGTM!

Also applies to: 14-16, 28-31, 81-102, 104-104

src/tools/automate-utils/list-session-ids.ts (2)

133-137: LGTM!


9-13: 🩺 Stability & Availability

No change required for UnknownBuildError

tsconfig.json targets ES2022, so instanceof UnknownBuildError remains reliable. The Object.setPrototypeOf workaround is not required.

src/tools/automate.ts (1)

89-140: LGTM!

Also applies to: 213-213

tests/tools/list-session-ids.test.ts (2)

22-33: LGTM!

Also applies to: 193-193, 234-298


231-231: 📐 Maintainability & Code Quality

No change needed. Both relevant describe blocks call beforeEach(() => vi.clearAllMocks()), so mock calls and queued values reset between tests.

README.md (1)

429-429: LGTM!

Also applies to: 447-447

Comment thread src/tools/automate-utils/resolve-hashed-build-id.ts
Comment thread src/tools/build-insights.ts
@FourFifthsCode

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This looks great and is improvement on #390! Thanks!

When listSessions resolved an observability id, the resolution note was
emitted first and the JSON session list moved to content[1], so callers
that parse the first text part as JSON broke on that path. Emit the list
first and the note after it; the hashed-id path is unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
@gaurav-singh-9227
gaurav-singh-9227 merged commit fe02f66 into main Sep 9, 2026
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4 participants