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@opentelemetry/context-zone

0.9.0 • Public • Published

OpenTelemetry Context Zone

Gitter chat NPM Published Version dependencies devDependencies Apache License

This module provides Zone Context Manager with bundled zone-js for Web applications. If you have your own zone-js please use @opentelemetry/context-zone-peer-dep If you use Angular it means you already have the zone-js and you should use @opentelemetry/context-zone-peer-dep

Installation

npm install --save @opentelemetry/context-zone

Usage

import { ConsoleSpanExporter, SimpleSpanProcessor } from '@opentelemetry/tracing';
import { WebTracer } from '@opentelemetry/web';
import { ZoneContextManager } from '@opentelemetry/context-zone';
 
const webTracerWithZone = new WebTracer({
  contextManager: new ZoneContextManager()
});
webTracerWithZone.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
 
// Example how the ZoneContextManager keeps the reference to the correct context during async operations
const span1 = webTracerWithZone.startSpan('foo1');
webTracerWithZone.withSpan(span1, () => {
  console.log('Current span is span1', webTracerWithZone.getCurrentSpan() === span1);
  setTimeout(() => {
    const span2 = webTracerWithZone.startSpan('foo2');
    console.log('Current span is span1', webTracerWithZone.getCurrentSpan() === span1);
    webTracerWithZone.withSpan(span2, () => {
      console.log('Current span is span2', webTracerWithZone.getCurrentSpan() === span2);
      setTimeout(() => {
        console.log('Current span is span2', webTracerWithZone.getCurrentSpan() === span2);
      }, 500);
    });
    // there is a timeout which still keeps span2 active
    console.log('Current span is span2', webTracerWithZone.getCurrentSpan() === span2);
  }, 500);
  console.log('Current span is span1', webTracerWithZone.getCurrentSpan() === span1);
});
 

Useful links

License

Apache 2.0 - See LICENSE for more information.

Install

npm i @opentelemetry/context-zone

DownloadsWeekly Downloads

195

Version

0.9.0

License

Apache-2.0

Unpacked Size

18.9 kB

Total Files

7

Last publish

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