Improve-observability

[Joao-vi]

fixes #

PR checklist:

• Update READ.me ?
• Update API documentation ?

QA checklist:

• Smoke test the functionality described in the issue
• Test for side effects
• UI responsiveness
• Cross browser testing
• Code review

[Copilot]

Pull request overview

This PR adds observability infrastructure to improve request tracing and performance monitoring. It introduces a telemetry collection system with middleware and decorators to track request durations and method execution times, along with Babel decorator support.

Changes:

• Added Babel decorators plugin support to enable TypeScript decorator syntax
• Implemented telemetry collection infrastructure with TelemetryCollector class and TimedMethod decorator
• Integrated observability middleware into the request pipeline to track HTTP requests and method execution times
• Enabled v2CreateEntity feature flag

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
yarn.lock	Added dependencies for @babel/plugin-proposal-decorators and related Babel packages
package.json	Added @babel/plugin-proposal-decorators dependency
babel.config.json	Configured decorators plugin with legacy mode
app/server.js	Added observabilityMiddleware to middleware chain
app/api/utils/requestIdMiddleware.ts	Refactored to store requestId in a variable before setting in context
app/api/utils/observabilityMiddleware.ts	New middleware to initialize telemetry collector and log request metrics
app/api/utils/languageMiddleware.ts	Added timing instrumentation for language detection
app/api/utils/AppContext.ts	Added methods to get/set TelemetryCollector in context
app/api/entities.v2/database/MongoMultiLanguageEntityDataSource.ts	Added @TimedMethod decorator to create method
app/api/core/libs/logger/TimedMethodDecorator.ts	New decorator to automatically track method execution time
app/api/core/libs/logger/TelemetryCollector.ts	New class to collect and aggregate telemetry data
app/api/core/infrastructure/mongodb/thesauri/MongoThesauriDataSourceV2.ts	Added @TimedMethod decorators to create and exists methods
app/api/core/infrastructure/express/thesaurus/UpdateThesaurusController.ts	Added @TimedMethod decorator to handle method
app/api/core/infrastructure/express/thesaurus/CreateThesaurusController.ts	Added @TimedMethod decorator to handle method
app/api/core/infrastructure/express/template/GetTemplatesController.ts	Added @TimedMethod decorator to handle method
app/api/core/infrastructure/express/template/CountTemplatesByThesaurusController.ts	Added @TimedMethod decorator to handle method
app/api/core/infrastructure/express/entity/BulkDeleteEntityController.ts	Added @TimedMethod decorator to handle method
app/api/core/application/thesaurusTranslationService/ThesaurusTranslationService.ts	Added @TimedMethod decorator to create method
app/api/config.ts	Enabled v2CreateEntity feature flag

Comments suppressed due to low confidence (1)

app/api/utils/languageMiddleware.ts:37

• If an exception occurs in the try block before timeEnd is called, the timer will remain in an incomplete state. Consider wrapping the telemetryCollector.timeEnd call in a finally block or adding it to the catch block as well to ensure timers are always ended even when errors occur.

    telemetryCollector.timeEnd('language_middleware');
    next();
  } catch (e) {
    next(e);
  }

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 13 changed files in this pull request and generated 6 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 20 out of 21 changed files in this pull request and generated 9 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.