fix(code-index): initialize external task managers before search

[WebMad]

Summary

Fixes #1722.

Fresh managers created for external task directories have not loaded configuration, so their feature-enabled getter defaults to false. Search previously interpreted that as indexing being explicitly disabled.

• Await manager initialization before checking feature settings.
• Preserve errors for genuinely disabled or unconfigured indexing.
• Report a separate not-initialized error if services remain unavailable after initialization.
• Propagate initialization failures without starting a search.
• Do not wait for background indexing completion or reinitialize ready managers.

This follows up on #1629, now included in the upstream base. Includes the test assertions from #1723 (addressing #1721), cherry-picked as a separate commit: successful searches must resolve the task workspace manager and forward the expected query.

Coverage

• Fresh external task manager with initially unloaded configuration.
• Delayed initialization prevents premature search.
• Initialization failure prevents search.
• Search proceeds while background indexing is still running.
• Disabled/unconfigured settings with initialized and uninitialized managers.
• Services still unavailable after initialization.

Validation

• 58 tests passed across the search unit, workspace routing, and tool-readiness suites.
• Focused ESLint passed; suppression counts unchanged.
• Repository lint passed in the commit hook.
• TypeScript checks passed, including repository check-types in the push hook.
• Diff whitespace checks passed.

No real extension-host reproduction was performed.

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• src/services/code-index/__tests__/manager.spec.ts
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🔇 Additional comments (2)

src/services/code-index/manager.ts (1)

29-29: LGTM!

Also applies to: 121-121, 128-135

src/services/code-index/__tests__/manager.spec.ts (1)

201-202: LGTM!

Also applies to: 205-206, 221-239

---

📝 Summary

Summary by CodeRabbit

• Bug Fixes
  • Codebase search now initializes the code index when needed before searching.
  • Searches wait for initialization to complete without unnecessarily waiting for background indexing.
  • Clear errors are reported when initialization fails or the index cannot be used.
  • Concurrent initialization requests are handled consistently, reducing duplicate setup work.
  • Failed initialization can be retried, allowing searches to recover from temporary setup issues.

Walkthrough

Codebase search now validates the provider and initializes an uninitialized code-index manager before checking settings or searching. Manager initialization coalesces concurrent calls and supports retries after failure. Tests cover external task directories and initialization outcomes.

Changes

Code search initialization

Layer / File(s)	Summary
Coalesced manager initialization src/services/code-index/manager.ts, src/services/code-index/__tests__/manager.spec.ts	CodeIndexManager.initialize reuses an in-flight promise, clears it after settlement, and permits retry after a failed configuration load. Tests cover both behaviors.
Provider validation and manager initialization src/core/tools/CodebaseSearchTool.ts	execute validates the provider and its context. It initializes uninitialized managers through provider.contextProxy before settings checks and reports an explicit readiness error when needed.
Initialization and search behavior tests src/core/tools/__tests__/CodebaseSearchTool.spec.ts, src/core/tools/__tests__/CodebaseSearchTool.workspace.spec.ts	Tests cover initialized and uninitialized managers, external task searches, delayed initialization, initialization failures, disabled settings, missing configuration, registry lookups, and search forwarding.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant CodebaseSearchTool
  participant SearchRegistry
  participant CodeIndexManager
  participant ConfigurationManager
  participant Task
  CodebaseSearchTool->>SearchRegistry: obtain manager for context and task directory
  CodebaseSearchTool->>CodeIndexManager: initialize with provider.contextProxy
  CodeIndexManager->>ConfigurationManager: loadConfiguration()
  ConfigurationManager-->>CodeIndexManager: initialization result
  CodebaseSearchTool->>CodeIndexManager: searchIndex
  CodebaseSearchTool->>Task: push search result

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🚥 Pre-merge checks | ✅ 6 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Regression Evidence	⚠️ Warning	The PR adds the CodebaseSearchTool path that awaits manager.initialize and claims that search must not wait for background indexing. The focused workspace test does not cover that behavior. Its `p…	Add a focused test with two independent promises: resolve manager initialization while a background-indexing promise remains pending, then assert CodebaseSearchTool.execute calls searchIndex and completes before the background promise r…
Lifecycle Resource Cleanup	⚠️ Warning	The changed search path can create resources after disposal. CodebaseSearchTool.execute now awaits manager.initialize(provider.contextProxy) for a fresh external manager. initializeInternal can …	Add disposal-aware initialization. Track a disposed state, invalidate or cancel the pending initialization in dispose(), and check that state after each awaited initialization phase before creating services or starting indexing. Dispose a…

✅ Passed checks (6 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The PR satisfies #1722. CodebaseSearchTool.execute calls manager.initialize(provider.contextProxy) before feature checks when manager.isInitialized is false. It preserves distinct disabled and u…
Out of Scope Changes check	✅ Passed	The production changes support #1722 by adding task-manager initialization, readiness checks, and concurrent initialization handling. The test changes verify the required search, error, and lifecycle …
Security Boundaries	✅ Passed	No changed path meets the security failure conditions. In CodebaseSearchTool.execute, askApproval("tool", ...) still runs before manager lookup and the new `manager.initialize(provider.contextProx…
Persistence Integrity	✅ Passed	No changed persistence path meets the failure condition. The PR adds await manager.initialize(...) in CodebaseSearchTool and awaits configuration and cache initialization inside `initializeInterna…
Title check	✅ Passed	The title clearly identifies the main change: initializing external task managers before codebase search.
Description check	✅ Passed	The description identifies issue #1722, explains the implementation and expected behavior, and documents test coverage and validation results. It does not use all template headings or include the pre-…

Full details: Regression Evidence

Explanation

The PR adds the CodebaseSearchTool path that awaits manager.initialize and claims that search must not wait for background indexing. The focused workspace test does not cover that behavior. Its pendingInitialization promise represents initialization itself, not a separate background-indexing operation. After it resolves, the mocked state getter always returns "Indexing"; no pending background promise exists. Therefore the test would also pass if search waited for background indexing. The initialization failure, disabled, unconfigured, and not-initialized branches have focused coverage.

Resolution

Add a focused test with two independent promises: resolve manager initialization while a background-indexing promise remains pending, then assert CodebaseSearchTool.execute calls searchIndex and completes before the background promise resolves. Keep the existing assertion that search does not start before initialization resolves.

Full details: Lifecycle Resource Cleanup

Explanation

The changed search path can create resources after disposal. CodebaseSearchTool.execute now awaits manager.initialize(provider.contextProxy) for a fresh external manager. initializeInternal can remain pending during configuration or cache setup, then create an orchestrator and start background indexing, which initializes a file watcher. CodeIndexManager.dispose() only stops resources that exist when disposal runs; it does not cancel or invalidate _initializationPromise. If extension deactivation calls CodeIndexManagerRegistry.disposeAll() while this search initialization is pending, disposal sees no orchestrator, then initialization resumes and starts an unmanaged watcher and indexing task after the registry is cleared.

Resolution

Add disposal-aware initialization. Track a disposed state, invalidate or cancel the pending initialization in dispose(), and check that state after each awaited initialization phase before creating services or starting indexing. Dispose any partially created cache, provider, orchestrator, and watcher resources when initialization observes disposal. Ensure a disposed manager rejects later initialization and cannot start background indexing after disposeAll().

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

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Actionable comments posted: 1

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Inline comments:
In `@src/core/tools/CodebaseSearchTool.ts`:
- Around line 69-70: Update CodeIndexManager initialization around initialize()
to coalesce concurrent calls through one shared in-flight promise. Have later
callers await the existing promise instead of invoking
CodeIndexConfigManager.loadConfiguration() or service recreation again, and
clear the stored promise after completion so failed initialization remains
retryable.

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[edelauna]

Could recovery or disposal invalidate this in-flight initialization before another caller joins it? As written, an initialization paused in loadConfiguration() can continue after recoverFromError() clears the services, then publish stale services and defeat the clean-slate recovery contract.