@sentry/angular

Official Sentry SDK for Angular

Links

• Official SDK Docs
• TypeDoc

General

This package is a wrapper around @sentry/browser, with added functionality related to Angular. All methods available in @sentry/browser can be imported from @sentry/angular.

To use this SDK, call Sentry.init(options) before you bootstrap your Angular application.

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { init } from '@sentry/angular';

import { AppModule } from './app/app.module';

init({
  dsn: '__DSN__',
  // ...
});

// ...

enableProdMode();
platformBrowserDynamic()
  .bootstrapModule(AppModule)
  .then(success => console.log(`Bootstrap success`))
  .catch(err => console.error(err));

ErrorHandler

@sentry/angular exports a function to instantiate ErrorHandler provider that will automatically send Javascript errors captured by the Angular's error handler.

import { NgModule, ErrorHandler } from '@angular/core';
import { createErrorHandler } from '@sentry/angular';

@NgModule({
  // ...
  providers: [
    {
      provide: ErrorHandler,
      useValue: createErrorHandler({
        showDialog: true,
      }),
    },
  ],
  // ...
})
export class AppModule {}

Additionally, createErrorHandler accepts a set of options that allows you to configure its behavior. For more details see ErrorHandlerOptions interface in src/errorhandler.ts.

Tracing

@sentry/angular exports a Trace Service, Directive and Decorators that leverage the @sentry/tracing Tracing integration to add Angular related spans to transactions. If the Tracing integration is not enabled, this functionality will not work. The service itself tracks route changes and durations, where directive and decorators are tracking components initializations.

Install

Registering a Trace Service is a 3-step process.

• Register and configure the BrowserTracing integration from @sentry/tracing, including custom Angular routing instrumentation:

import { init, instrumentAngularRouting } from '@sentry/angular';
import { Integrations as TracingIntegrations } from '@sentry/tracing';

init({
  dsn: '__DSN__',
  integrations: [
    new TracingIntegrations.BrowserTracing({
      tracingOrigins: ['localhost', 'https://yourserver.io/api'],
      routingInstrumentation: instrumentAngularRouting,
    }),
  ],
  tracesSampleRate: 1,
});

• Register SentryTrace as a provider in Angular's DI system, with a Router as its dependency:

import { NgModule } from '@angular/core';
import { Router } from '@angular/router';
import { TraceService } from '@sentry/angular';

@NgModule({
  // ...
  providers: [
    {
      provide: TraceService,
      deps: [Router],
    },
  ],
  // ...
})
export class AppModule {}

• Either require the TraceService from inside AppModule or use APP_INITIALIZER to force-instantiate Tracing.

@NgModule({
  // ...
})
export class AppModule {
  constructor(trace: TraceService) {}
}

or

import { APP_INITIALIZER } from '@angular/core';

@NgModule({
  // ...
  providers: [
    {
      provide: APP_INITIALIZER,
      useFactory: () => () => {},
      deps: [TraceService],
      multi: true,
    },
  ],
  // ...
})
export class AppModule {}

Use

To track Angular components as part of your transactions, you have 3 options.

TraceDirective: used to track a duration between OnInit and AfterViewInit lifecycle hooks in template:

import { TraceModule } from '@sentry/angular';

@NgModule({
  // ...
  imports: [TraceModule],
  // ...
})
export class AppModule {}

Then inside your components template (keep in mind that directive name attribute is required):

<app-header trace="header"></app-header>
<articles-list trace="articles-list"></articles-list>
<app-footer trace="footer"></app-footer>

TraceClassDecorator: used to track a duration between OnInit and AfterViewInit lifecycle hooks in components:

import { Component } from '@angular/core';
import { TraceClassDecorator } from '@sentry/angular';

@Component({
  selector: 'layout-header',
  templateUrl: './header.component.html',
})
@TraceClassDecorator()
export class HeaderComponent {
  // ...
}

TraceMethodDecorator: used to track a specific lifecycle hooks as point-in-time spans in components:

import { Component, OnInit } from '@angular/core';
import { TraceMethodDecorator } from '@sentry/angular';

@Component({
  selector: 'app-footer',
  templateUrl: './footer.component.html',
})
export class FooterComponent implements OnInit {
  @TraceMethodDecorator()
  ngOnInit() {}
}

You can also add your own custom spans by attaching them to the current active transaction using getActiveTransaction helper. For example, if you'd like to track the duration of Angular boostraping process, you can do it as follows:

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { init, getActiveTransaction } from '@sentry/angular';

import { AppModule } from './app/app.module';

// ...

const activeTransaction = getActiveTransaction();
const boostrapSpan =
  activeTransaction &&
  activeTransaction.startChild({
    description: 'platform-browser-dynamic',
    op: 'angular.bootstrap',
  });

platformBrowserDynamic()
  .bootstrapModule(AppModule)
  .then(() => console.log(`Bootstrap success`))
  .catch(err => console.error(err));
  .finally(() => {
    if (bootstrapSpan) {
      boostrapSpan.finish();
    }
  })

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