OpenTelemetry instrumentation for bunyan

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OpenTelemetry instrumentation for bunyan
!NPM Published Versionnpm-imgnpm-url !Apache Licenselicense-imagelicense-image
This module provides automatic instrumentation for the injection of trace context to bunyan, which may be loaded using the @opentelemetry/sdk-trace-node package and is included in the @opentelemetry/auto-instrumentations-node bundle.
If total installation size is not constrained, it is recommended to use the @opentelemetry/auto-instrumentations-node bundle with @opentelemetry/sdk-node for the most seamless instrumentation experience.
Compatible with OpenTelemetry JS API and SDK 1.0+.


npm install --save @opentelemetry/instrumentation-bunyan

Supported Versions

  • ^1.0.0


const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { BunyanInstrumentation } = require('@opentelemetry/instrumentation-bunyan');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');

const provider = new NodeTracerProvider();

  instrumentations: [
    new BunyanInstrumentation({
      // Optional hook to insert additional context to bunyan records.
      // Called after trace context is added to the record.
      logHook: (span, record) => {
        record['resource.service.name'] = provider.resource.attributes['service.name'];
    // other instrumentations

bunyan.createLogger({ name: 'example' }).info('foo');
// {"name":"example","msg":"foo","trace_id":"e21c7a95fff34e04f77c7bd518779621","span_id":"b7589a981fde09f4","trace_flags":"01", ...}

Fields added to bunyan records

For the current active span, the following will be added to the bunyan record:
  • trace_id
  • span_id
  • trace_flags

When no span context is active or the span context is invalid, injection is skipped.

Useful links

  • For more information on OpenTelemetry, visit:
  • For more about OpenTelemetry JavaScript:
  • For help or feedback on this project, join us in GitHub Discussionsdiscussions-url


Apache 2.0 - See LICENSElicense-url for more information.