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@google-cloud/logging-bunyan

Stackdriver Logging stream for Bunyan

  • 0.5.0
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@google-cloud/logging-bunyan

Stackdriver Logging stream for Bunyan

This module provides an easy to use, higher-level layer for working with Stackdriver Logging, compatible with Bunyan. Simply use this as a raw stream with your existing Bunyan loggers.

For lower-level access to the Stackdriver Logging API, see @google-cloud/logging.

Beta This is a Beta release of the Stackdriver Logging libraries for Node.js. These libraries might be changed in backward-incompatible ways and are not subject to any SLA or deprecation policy.

$ npm install --save @google-cloud/logging-bunyan
var bunyan = require('bunyan');
var loggingBunyan = require('@google-cloud/logging-bunyan')();

var logger = bunyan.createLogger({
  name: 'my-service',
  streams: [
    loggingBunyan.stream('info')
  ]
});

logger.error('warp nacelles offline');
logger.info('shields at 99%');

Authentication

It's incredibly easy to get authenticated and start using Google's APIs. You can set your credentials on a global basis as well as on a per-API basis. See each individual API section below to see how you can auth on a per-API-basis. This is useful if you want to use different accounts for different Google Cloud services.

On Google Cloud Platform

If you are running this client on Google Cloud Platform, we handle authentication for you with no configuration. You just need to make sure that when you set up the GCE instance, you add the correct scopes for the APIs you want to access.

var loggingBunyan = require('@google-cloud/logging-bunyan')();
// ...you're good to go!

Elsewhere

If you are not running this client on Google Cloud Platform, you need a Google Developers service account. To create a service account:

  1. Visit the Google Developers Console.
  2. Create a new project or click on an existing project.
  3. Navigate to APIs & auth > APIs section and turn on the following APIs (you may need to enable billing in order to use these services):
  • Stackdriver Logging API
  1. Navigate to APIs & auth > Credentials and then:
  • If you want to use a new service account key, click on Create credentials and select Service account key. After the account key is created, you will be prompted to download the JSON key file that the library uses to authenticate your requests.
  • If you want to generate a new service account key for an existing service account, click on Generate new JSON key and download the JSON key file.
var projectId = process.env.GCLOUD_PROJECT; // E.g. 'grape-spaceship-123'

var loggingBunyan = require('@google-cloud/logging-bunyan')({
  projectId: projectId,

  // The path to your key file:
  keyFilename: '/path/to/keyfile.json'

  // Or the contents of the key file:
  credentials: require('./path/to/keyfile.json')
});

// ...you're good to go!

Error Reporting

Any Error objects you log at severity error or higher can automatically be picked up by Stackdriver Error Reporting if your application is running on Google Cloud Platform. Make sure to add logs to your uncaught exception and unhandled rejection handlers if you want to see those errors too.

You may also want to see the @google-cloud/error-reporting module which provides direct access to the Error Reporting API.

Formatting Request Logs

To format your request logs you can provide a httpRequest property on the bunyan metadata you provide along with the log message. We will treat this as the HttpRequest message and Stackdriver logging will show this as a request log. Example:

Request Log Example

logger.info({ 
  httpRequest: {
    status: res.statusCode,
    requestUrl: req.url,
    requestMethod: req.method,
    remoteIp: req.connection.remoteAddress,
    // etc.
  }
}, req.path);

The httpRequest proprety must be a properly formatted HttpRequest message.

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Package last updated on 17 Jul 2017

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