@opentelemetry/resources

What is @opentelemetry/resources?

The @opentelemetry/resources package is part of the OpenTelemetry project, which provides a set of APIs, libraries, agents, and instrumentation to create and manage telemetry data (metrics, logs, and traces) for cloud-native software. This package specifically offers a way to describe the entity producing telemetry, such as service, environment, and versioning information. It allows users to define and attach these details to their telemetry data.

What are @opentelemetry/resources's main functionalities?

Creating a Resource

This feature allows the creation of a Resource object that describes the service generating telemetry data. It includes attributes like service name, version, and deployment environment.

{"const { Resource } = require('@opentelemetry/resources');
const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');

const resource = new Resource({
  [SemanticResourceAttributes.SERVICE_NAME]: 'my-service',
  [SemanticResourceAttributes.SERVICE_VERSION]: '1.0.0',
  [SemanticResourceAttributes.DEPLOYMENT_ENVIRONMENT]: 'production'
});
"}

Merging Resources

This feature demonstrates how to merge two Resource objects into one, combining their attributes. This is useful when you have resource information coming from different sources and want to create a unified view.

{"const { Resource } = require('@opentelemetry/resources');

const resource1 = new Resource({
  'service.name': 'my-service'
});
const resource2 = new Resource({
  'service.version': '1.0.0'
});

const mergedResource = resource1.merge(resource2);
"}

Other packages similar to @opentelemetry/resources

winston

Winston is a popular logging library for Node.js. While it does not directly offer the same functionality as @opentelemetry/resources, it allows users to add custom metadata to logs, which can include similar resource attributes. However, it is not part of the OpenTelemetry ecosystem and does not provide a standardized way to describe resources.

bunyan

Bunyan is another Node.js logging library that supports the addition of arbitrary metadata to log records, which can be used to include resource information. Like winston, it is not designed to work with the OpenTelemetry ecosystem and lacks the standardization that @opentelemetry/resources provides.

pino

Pino is a very low overhead Node.js logger. It supports the addition of custom metadata to log messages, which could include resource-like data. Pino focuses on performance and is not part of the OpenTelemetry project, so it does not offer the same standardized resource description capabilities.

README

OpenTelemetry Resources Util

The OpenTelemetry Resource is an immutable representation of the entity producing telemetry. For example, a process producing telemetry that is running in a container on Kubernetes has a Pod name, it is in a namespace and possibly is part of a Deployment which also has a name. All three of these attributes can be included in the Resource.

This document defines standard attributes for resources which are accessible via @opentelemetry/semantic-conventions.

Installation

npm install --save @opentelemetry/resources

Usage

import { SEMRESATTRS_SERVICE_NAME } from '@opentelemetry/semantic-conventions';
import { Resource } from '@opentelemetry/resources';

const resource = new Resource({
    [SEMRESATTRS_SERVICE_NAME]: 'api-service',
});

const anotherResource = new Resource({
    'service.version': '2.0.0',
    'service.group': 'instrumentation-group'
});
const mergedResource = resource.merge(anotherResource);

Useful links

• For more information on OpenTelemetry, visit: https://opentelemetry.io/
• For more about OpenTelemetry JavaScript: https://github.com/open-telemetry/opentelemetry-js
• For help or feedback on this project, join us in GitHub Discussions

License

Apache 2.0 - See LICENSE for more information.