@opentelemetry/context-zone-peer-dep
Advanced tools
Package description
@opentelemetry/context-zone-peer-dep is a package that provides context management capabilities using Zone.js. It is part of the OpenTelemetry project, which is a set of APIs, libraries, agents, and instrumentation to provide observability for applications.
Context Management
This feature allows you to manage context using Zone.js. The code sample demonstrates how to set the global context manager to use ZoneContextManager, create a new context, and run a function within that context.
const { context, setGlobalContextManager } = require('@opentelemetry/api');
const { ZoneContextManager } = require('@opentelemetry/context-zone-peer-dep');
// Set the global context manager to use ZoneContextManager
setGlobalContextManager(new ZoneContextManager());
// Create a new context
const ctx = context.active().setValue('key', 'value');
// Run a function within the context
context.with(ctx, () => {
console.log(context.active().getValue('key')); // Outputs: 'value'
});@opentelemetry/context-async-hooks provides context management using Node.js async_hooks. It is similar to @opentelemetry/context-zone-peer-dep but is designed for use in Node.js environments, leveraging the async_hooks API for context propagation.
zone.js is a library that provides execution context tracking for JavaScript. It is the underlying library used by @opentelemetry/context-zone-peer-dep for context management. While zone.js is more general-purpose, @opentelemetry/context-zone-peer-dep integrates it specifically for OpenTelemetry context management.
Changelog
1.21.0
MeterProvider.addMetricReader() please use the constructor option readers instead.Readme
This module provides Zone Context Manager with a peer dependency for zone-js for Web applications. If you use Angular you already have the zone-js and you should use this package. If you don't have your own zone-js please use @opentelemetry/context-zone
Please note that due to an issue with zone.js, the ZoneContextManager does not work with JS code targeting ES2017+.
In order to use the ZoneContextManager, please transpile back to ES2015.
npm install --save @opentelemetry/context-zone-peer-dep
import { context, trace } from '@opentelemetry/api';
import {
ConsoleSpanExporter,
SimpleSpanProcessor,
WebTracerProvider,
} from '@opentelemetry/sdk-trace-web';
import { ZoneContextManager } from '@opentelemetry/context-zone-peer-dep';
const providerWithZone = new WebTracerProvider();
providerWithZone.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
providerWithZone.register({
contextManager: new ZoneContextManager()
});
// Example how the ZoneContextManager keeps the reference to the correct context during async operations
const webTracerWithZone = providerWithZone.getTracer('default');
const span1 = webTracerWithZone.startSpan('foo1');
context.with(trace.setSpan(context.active(), span1, () => {
console.log('Current span is span1', trace.getSpan(context.active()) === span1);
setTimeout(() => {
const span2 = webTracerWithZone.startSpan('foo2');
console.log('Current span is span1', trace.getSpan(context.active()) === span1);
context.with(trace.setSpan(context.active(), span2, () => {
console.log('Current span is span2', trace.getSpan(context.active()) === span2);
setTimeout(() => {
console.log('Current span is span2', trace.getSpan(context.active()) === span2);
}, 500);
});
// there is a timeout which still keeps span2 active
console.log('Current span is span2', trace.getSpan(context.active()) === span2);
}, 500);
console.log('Current span is span1', trace.getSpan(context.active()) === span1);
});
Apache 2.0 - See LICENSE for more information.
FAQs
Unknown package
We found that @opentelemetry/context-zone-peer-dep demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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