* fix: use correct MCP SDK API for server capabilities in test
getServerVersion() returns Implementation (name/version only), not the
full init result. Use client.getServerCapabilities() instead to access
server capabilities, fixing the CI typecheck failure.
Concieved by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: resolve multiple n8n_update_partial_workflow bugs (#592, #599, #610, #623, #624, #625, #629, #630, #633)
Phase 1 - Data loss prevention:
- Add missing unary operators (empty, notEmpty, exists, notExists) to sanitizer (#592)
- Preserve positional empty arrays in connections during removeNode/cleanStale (#610)
- Scope sanitization to modified nodes only, preventing unrelated node corruption
- Add empty body {} to activate/deactivate POST calls to fix 415 errors (#633)
Phase 2 - Error handling & response clarity:
- Serialize Zod errors to readable "path: message" strings (#630)
- Add saved:true/false field to all response paths (#625)
- Improve updateNode error hint with correct structure example (#623)
- Track removed node names for better removeConnection errors (#624)
Phase 3 - Connection & type fixes:
- Coerce sourceOutput/targetInput to String() consistently (#629)
- Accept numeric sourceOutput/targetInput at Zod schema level via transform
Phase 4 - Tag operations via dedicated API (#599):
- Track tags as tagsToAdd/tagsToRemove instead of mutating workflow.tags
- Orchestrate tag creation and association via listTags/createTag/updateWorkflowTags
- Reconcile conflicting add/remove for same tag (last operation wins)
- Tag failures produce warnings, not hard errors
Conceived by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs: add v2.37.0 changelog entry
Conceived by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: resolve pre-existing integration test failures in CI
- Create new MCP Server instance per connection in test helpers (SDK 1.27+
requires separate Protocol instance per connection)
- Normalize database paths with path.resolve() in shared-database singleton
to prevent path mismatch errors across test files
- Add no-op catch handler to deferred initialization promise in server.ts
to prevent unhandled rejection warnings
- Properly call mcpServer.shutdown() in test helper close() to release
shared database references
Conceived by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: critical memory leak from per-session database connections (#542)
Each MCP session was creating its own database connection (~900MB),
causing OOM kills every ~20 minutes with 3-4 concurrent sessions.
Changes:
- Add SharedDatabase singleton pattern - all sessions share ONE connection
- Reduce session timeout from 30 min to 5 min (configurable)
- Add eager cleanup for reconnecting instances
- Fix telemetry event listener leak
Memory impact: ~900MB/session → ~68MB shared + ~5MB/session overhead
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
* fix: resolve test failures from shared database race conditions
- Fix `shutdown()` to respect shared database pattern (was directly closing)
- Add `await this.initialized` in both `close()` and `shutdown()` to prevent
race condition where cleanup runs while initialization is in progress
- Add double-shutdown protection with `isShutdown` flag
- Export `SharedDatabaseState` type for proper typing
- Include error details in debug logs
- Add MCP server close to `shutdown()` for consistency with `close()`
- Null out `earlyLogger` in `shutdown()` for consistency
The CI test failure "The database connection is not open" was caused by:
1. `shutdown()` directly calling `this.db.close()` which closed the SHARED
database connection, breaking subsequent tests
2. Race condition where `shutdown()` ran before initialization completed
Conceived by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* test: add unit tests for shared-database module
Add comprehensive unit tests covering:
- getSharedDatabase: initialization, reuse, different path error, concurrent requests
- releaseSharedDatabase: refCount decrement, double-release guard
- closeSharedDatabase: state clearing, error handling, re-initialization
- Helper functions: isSharedDatabaseInitialized, getSharedDatabaseRefCount
21 tests covering the singleton database connection pattern used to prevent
~900MB memory leaks per session.
Conceived by Romuald Członkowski - www.aiadvisors.pl/en
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
