sfdx-telemetry

This package serves an interface for Microsoft's Application Insights npm module and supports O11y (Observability) telemetry.

Install

yarn add @salesforce/telemetry --save

Usage

$3

``javascript
import TelemetryReporter from '@salesforce/telemetry';

const reporter = await TelemetryReporter.create({ project: 'my-project-name', key: 'my-instrumentation-key' });
reporter.start();

// Now you can send events and the reporter will batch and send.
reporter.sendTelemetryEvent('event-name', { foo: 'bar', executionTime: 0.5912 });
`

By default, some common properties are hidden for GDPR. This is to protect client side tools that send telemetry. If the owner of the long running process controls the machines too, you can redefine the GDPR sensitive fields.

`javascript
const reporter = await TelemetryReporter.create({
project: 'my-project-name',
key: 'my-instrumentation-key',
gdprSensitiveKeys: [],
});
`

$3

`javascript
import TelemetryReporter from '@salesforce/telemetry';

const reporter = await TelemetryReporter.create({ project: 'my-project-name', key: 'my-instrumentation-key' });

// Send events.
reporter.sendTelemetryEvent('event-name', { foo: 'bar', executionTime: 0.5912 });

// When all finished sending events, stop the reporter or the process may hang.
reporter.stop();
`

Note: For short lived processes, the telemetry can take 0-3 seconds to send all events to the server on stop, and even longer if there is a timeout. It is recommended to send telemetry in a detached spawned process. i.e. spawn(..., { stdio: 'ignore'}).unref();

$3

The telemetry reporter also supports O11y telemetry alongside Application Insights. To enable O11y telemetry, provide the enableO11y and o11yUploadEndpoint options:

`javascript
const reporter = await TelemetryReporter.create({
project: 'my-project-name',
key: 'my-instrumentation-key', // Required for Application Insights
enableO11y: true,
o11yUploadEndpoint: 'https://your-o11y-endpoint.com/upload',
extensionName: 'my-extension', // Optional, defaults to project name
});
`

#### O11y-Only Mode

For O11y-only telemetry (without Application Insights), you can disable AppInsights explicitly:

`javascript
const reporter = await TelemetryReporter.create({
project: 'my-project-name',
enableO11y: true,
enableAppInsights: false, // Disable AppInsights
o11yUploadEndpoint: 'https://your-o11y-endpoint.com/upload',
extensionName: 'my-extension', // Optional, defaults to project name
});
`

Note: O11y telemetry respects the same telemetry enablement settings as Application Insights. If telemetry is disabled via SF_DISABLE_TELEMETRY or other configuration, O11y events will not be sent.

#### Custom Schema Support (sendTelemetryEventWithSchema)

To send events that conform to a specific O11y schema (e.g. PFT/pdpEventSchema), use sendTelemetryEventWithSchema instead of passing a schema in config. This keeps default events on the default schema and restricts schema-specific events (e.g. PFT) to the method that accepts a schema per call.

Step 1: Add o11y_schema to your package.json:

`json
{
"dependencies": {
"o11y_schema": "^256.154.0"
}
}
`

Step 2: Send events with a schema only when needed:

`javascript
import TelemetryReporter from '@salesforce/telemetry';
// Import the schema object from o11y_schema (e.g. for PFT events)
import { pdpEventSchema } from 'o11y_schema/sf_pdpEvent';

const reporter = await TelemetryReporter.create({
project: 'my-project-name',
enableO11y: true,
o11yUploadEndpoint: 'https://your-o11y-endpoint.com/upload',
extensionName: 'my-extension',
});

reporter.start();
// Default events use the default schema
reporter.sendTelemetryEvent('event-name', { foo: 'bar' });
// PFT or other schema-specific events: pass schema per call
reporter.sendTelemetryEventWithSchema('pftEventName', { userId: 'user-1', action: 'view' }, pdpEventSchema);
`

Note: sendTelemetryEventWithSchema sends only to O11y (not AppInsights). Use it for events that must conform to a given schema; use sendTelemetryEvent for all other events.

Note: The o11y_schema package may not provide TypeScript declarations. If your TypeScript configuration doesn't include skipLibCheck: true, you may need type declarations or @ts-expect-error for schema imports.

#### O11y Telemetry Batching

O11y telemetry supports automatic batching of events to improve performance and reduce network overhead. By default, batching is enabled with a 30-second flush interval. Events are automatically uploaded when:

- The buffer reaches 50KB in size, or
- The flush interval (default: 30 seconds) elapses, or
- The process exits (via shutdown hooks)

You can configure batching options during initialization:

`javascript
const reporter = await TelemetryReporter.create({
project: 'my-project-name',
enableO11y: true,
o11yUploadEndpoint: 'https://your-o11y-endpoint.com/upload',
o11yBatching: {
enableAutoBatching: true, // Default: true
flushInterval: 60_000, // 60 seconds (default: 30_000)
enableShutdownHook: true, // Default: true
enableBeforeExitHook: true, // Default: true (may not fire for STDIO servers)
},
});
`

To disable batching and upload events immediately after each event:

`javascript
const reporter = await TelemetryReporter.create({
project: 'my-project-name',
enableO11y: true,
o11yUploadEndpoint: 'https://your-o11y-endpoint.com/upload',
o11yBatching: {
enableAutoBatching: false, // Events will be uploaded immediately
},
});
`

You can also manually flush buffered events when needed (e.g., before critical operations or shutdown):

`javascript
// Manually flush buffered events
await reporter.flush();
`

Note: When batching is disabled, events are uploaded immediately after each sendTelemetryEvent(), sendTelemetryException(), sendTelemetryTrace(), or sendTelemetryMetric() call for backward compatibility.

Env Variables

SF_DISABLE_TELEMETRY: Set to true` if you want to disable telemetry.