VSCode Telemetry Extension

A Visual Studio Code extension demonstrating telemetry tracking using Azure Application Insights with an event-driven architecture.

Features

• Event-driven telemetry using TelemetryEventEmitter
• Clean, reusable API for tracking events
• Component-based organization
• Azure Application Insights integration

Setup

1. Clone and install dependencies:

   npm install

2. Add your Application Insights connection string in src/extension.ts:

   const connectionString = 'your-connection-string-here';

3. Run the extension:

   npm run compile
   # Press F5 to debug

Usage

Sending Telemetry Events

Use the TelemetryEventEmitter to fire events from anywhere in your extension:

import { TelemetryEventEmitter } from './event-emitter';

TelemetryEventEmitter.instance.fire({
    eventName: 'myEvent',
    componentName: 'myComponent',
    customDimensions: {
        action: 'buttonClick',
        feature: 'newFeature'
    },
    measurements: {
        executionTime: 123,
        memoryUsed: 456789
    }
});

API Reference

TelemetryEventEmitter

Singleton event emitter for telemetry events.

Methods:

• fire(payload) - Fire a telemetry event
• onDidFire(listener) - Listen for telemetry events

createTelemetryReporter(context)

Creates and initializes a telemetry reporter.

sendTelemetryEvent(reporter, eventName, componentName, customDimensions?, measurements?)

Sends a telemetry event to Application Insights.

Architecture

The extension uses an event-driven architecture:

1. Components fire telemetry events using TelemetryEventEmitter
2. The extension listens for these events during activation
3. Events are forwarded to Azure Application Insights via the reporter

This pattern decouples telemetry logic from business logic, making code cleaner and more maintainable.

Development

npm run compile  # Compile TypeScript
npm run watch    # Watch mode
npm run lint     # Lint code

License

MIT