@google-cloud/logging

What is @google-cloud/logging?

The @google-cloud/logging package is a client library for Google Cloud Logging, part of Google Cloud's suite of services for storing, searching, analyzing, monitoring, and alerting on log data from Google Cloud and Amazon Web Services. It allows developers to integrate their applications with the Google Cloud Logging service easily, enabling them to send logs directly from their applications to the cloud.

What are @google-cloud/logging's main functionalities?

Writing Log Entries

This feature allows users to write log entries to Google Cloud Logging. The code sample demonstrates how to create a log entry and write it to a specified log in Google Cloud.

const {Logging} = require('@google-cloud/logging');
const logging = new Logging();
const log = logging.log('my-log');
const metadata = {resource: {type: 'global'}};
const entry = log.entry(metadata, {message: 'Hello, world!'});
async function writeLog() {
  await log.write(entry);
  console.log('Logged: Hello, world!');
}
writeLog();

Listing Logs

This feature enables the listing of all logs in the Google Cloud Logging account. The code sample shows how to retrieve and print the names of all logs.

const {Logging} = require('@google-cloud/logging');
const logging = new Logging();
async function listLogs() {
  const [logs] = await logging.getLogs();
  console.log('Logs:');
  logs.forEach(log => {
    console.log(log.name);
  });
}
listLogs();

Deleting Logs

This feature allows users to delete logs from Google Cloud Logging. The code sample illustrates how to delete a specific log by its name.

const {Logging} = require('@google-cloud/logging');
const logging = new Logging();
const log = logging.log('my-log');
async function deleteLog() {
  await log.delete();
  console.log('Log deleted.');
}
deleteLog();

Other packages similar to @google-cloud/logging

winston

Winston is a versatile logging library for Node.js. Unlike @google-cloud/logging, which is specifically designed for integration with Google Cloud Logging, Winston supports multiple transports (a way to store logs) such as files, console, and more. It is more flexible for various logging needs and environments but doesn't provide direct integration with Google Cloud Logging without additional plugins.

bunyan

Bunyan is another Node.js logging library that focuses on JSON logging. Like Winston, it is highly configurable and supports various outputs but does not have built-in support for Google Cloud Logging. It is comparable to @google-cloud/logging in terms of providing structured logging but is more general-purpose.

README

Stackdriver Logging: Node.js Client

Node.js idiomatic client for Logging.

Stackdriver Logging allows you to store, search, analyze, monitor, and alert on log data and events from Google Cloud Platform and Amazon Web Services.

• Logging Node.js Client API Reference
• github.com/googleapis/nodejs-logging
• Logging Documentation

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

Before you begin

1. Select or create a Cloud Platform project.

   Go to the projects page

2. Enable billing for your project.

   Enable billing

3. Enable the Stackdriver Logging API.

   Enable the API

4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install --save @google-cloud/logging

Using the client library

// Imports the Google Cloud client library
const Logging = require('@google-cloud/logging');

// Your Google Cloud Platform project ID
const projectId = 'YOUR_PROJECT_ID';

// Creates a client
const logging = new Logging({
  projectId: projectId,
});

// The name of the log to write to
const logName = 'my-log';
// Selects the log to write to
const log = logging.log(logName);

// The data to write to the log
const text = 'Hello, world!';
// The metadata associated with the entry
const metadata = {resource: {type: 'global'}};
// Prepares a log entry
const entry = log.entry(metadata, text);

// Writes the log entry
log
  .write(entry)
  .then(() => {
    console.log(`Logged: ${text}`);
  })
  .catch(err => {
    console.error('ERROR:', err);
  });

Samples

Samples are in the samples/ directory. The samples' README.md has instructions for running the samples.

Sample	Source Code	Try it
Logs	source code
Sinks	source code

The Logging Node.js Client API Reference documentation also contains samples.

Versioning

This library follows Semantic Versioning.

This library is considered to be General Availability (GA). This means it is stable; the code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against GA libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

License

Apache Version 2.0

See LICENSE