Sentry-javascript: Is it possible now? @sentry/node integration to wrap bunyan log calls as breadcrumbs SO link: https://stackoverflow.com/questions/53310580/sentry-node-integration-to-wrap-bunyan-log-calls-as-breadcrumbs

[zishon89us]

How can I make @sentry/node integration to wrap bunyan log calls as breadcrumbs ?

Package

@sentry/node 4.3.0

Description

Sentry by defaults has integration for console.log to make it part of breadcrumbs:

Link: Import name: Sentry.Integrations.Console

How can we make it to work for bunyan logger as well, like:

const koa = require('koa');
const app = new koa();
const bunyan = require('bunyan');
const log = bunyan.createLogger({
    name: 'app',
    ..... other settings go here ....
});
const Sentry = require('@sentry/node');
Sentry.init({
    dsn: MY_DSN_HERE,
    integrations: integrations => {
        // should anything be handled here & how?
        return [...integrations];
    },
    release: 'xxxx-xx-xx'
});

app.on('error', (err) => {
    Sentry.captureException(err);
});

// I am trying all to be part of sentry breadcrumbs 
// but only console.log('foo'); is working
console.log('foo');
log.info('bar');
log.warn('baz');
log.debug('any');
log.error('many');  

throw new Error('help!');

P.S. I have already tried bunyan-sentry-stream but no success with @sentry/node, it just pushes entries instead of treating them as breadcrumbs.

SO link: https://stackoverflow.com/questions/53310580/sentry-node-integration-to-wrap-bunyan-log-calls-as-breadcrumbs

[kamilogorek]

https://docs.sentry.io/enriching-error-data/breadcrumbs/?platform=browser + as someone already answered on the SO:

var log = bunyan.createLogger({
  name: 'myapp',
  streams: [{
  level: 'debug',
  stream: {
    write: function(record) {
      Sentry.addBreadcrumb({
        message: record.msg,
        level: record.level
      });
    }
  }]
});

[kamilogorek]

Original question was answered. Feel free to reopen if you still have more questions.

[bhishp]

If you are using typescript you might get some compiler issues for not providing a WriteableStream with the example above, therefore you can use the Writeable constructor as below.

Additionally:

• the level emitted from Bunyan is a number, not a Senty severity, therefore you have to convert the value using level: Sentry.Severity.fromString(nameFromLevel[chunk.level])
• I don't want to override the existing bunyan stream so use the addStream function instead of passing in BunyanOptions

// if you want some stronger typing around the bunyan log entry
interface BunyanChunk {
  pid?: number;
  level: number;
  msg: string
  // ...   hostname?: string;
  [custom: string]: unknown;
}

const appLogger = Bunyan.createLogger();

appLogger.addStream({
  level: 'debug',
  // use the Writable constructor and pass a write function
  stream: new Writable({
    write(c: string, encoding, next) {
      const chunk: BunyanChunk = JSON.parse(c);
      Sentry.addBreadcrumb({
        message: chunk.msg,
        // convert from a Bunyan level to a Sentry Severity
        level: Sentry.Severity.fromString(Bunyan.nameFromLevel[chunk.level]),
      });
      next();
    },
  }),
});