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README.md

AWS OpenTelemetry X-Ray IdGenerator

NPM Published Version Apache License

The OpenTelemetry IdGenerator for AWS X-Ray generates trace IDs with its first four bytes set to the start time of the trace followed by a unique identifier consisting of 12 bytes of randomly generated numbers. OpenTelemetry offers an extension point which allows the usage of this custom IdGenerator as opposed to the out-of-the-box random IdGenerator, enabling compatibility with AWS X-Ray.

Status

Maturity Component Owner Compatibility
Stable @jj22ee API 1.0+
SDK 1.0+

Installation

npm install --save @opentelemetry/id-generator-aws-xray

Usage

In the global tracer configuration file, configure the following:

const { NodeSDK } = require('@opentelemetry/sdk-node');
const { AWSXRayIdGenerator } = require('@opentelemetry/id-generator-aws-xray');

const sdk = new NodeSDK({
  idGenerator: new AWSXRayIdGenerator(),
  // ...
});
sdk.start();
process.once('beforeExit', async () => { await sdk.shutdown(); });

Trace ID Details

Example trace ID format: 58406520a006649127e371903a2de979

A trace ID consists of two parts:

  1. Timestamp: The first 8 hexadecimal digits represent the time of the original request in Unix epoch time. For example, 10:00 AM December 1st, 2016 PST in epoch time is 1480615200 seconds, or 58406520 in hexadecimal digits.
  2. Unique Identifier: The last 24 hexadecimal digits is an random identifier for the trace.

Useful links

License

Apache 2.0 - See LICENSE for more information.