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@opentelemetry/core

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@opentelemetry/core

OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.

  • 1.29.0
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18M
increased by11.75%
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3
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What is @opentelemetry/core?

The @opentelemetry/core package is part of the OpenTelemetry project, which provides a set of APIs, libraries, agents, and instrumentation to provide observability for applications. Specifically, the core package includes fundamental building blocks for creating and managing telemetry data (metrics, traces, logs) and is designed to be used by other OpenTelemetry packages to create a complete observability framework.

What are @opentelemetry/core's main functionalities?

Context Management

This feature allows for the propagation of context information across asynchronous operations in your application. The context is used to store and access current execution-specific data, such as active span in tracing.

const { context, ROOT_CONTEXT } = require('@opentelemetry/core');
const ctx = context.active();
const newContext = context.with(ROOT_CONTEXT, () => {});

Propagation

Propagation is used to transmit context (e.g., traces and correlations) across process boundaries. It includes utilities to inject and extract context information from carriers in various formats.

const { propagation, defaultTextMapGetter } = require('@opentelemetry/core');
const carrier = {};
const context = propagation.extract(ROOT_CONTEXT, carrier, defaultTextMapGetter);

Instrumentation

Instrumentation is a core part of OpenTelemetry, allowing developers to collect telemetry data (metrics, logs, and traces) from their applications. This feature provides diagnostic logging capabilities.

const { diag } = require('@opentelemetry/core');
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.INFO);

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Package last updated on 04 Dec 2024

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