@google-cloud/firestore

What is @google-cloud/firestore?

The @google-cloud/firestore npm package is a client library for accessing Google Cloud Firestore, a NoSQL document database built for automatic scaling, high performance, and ease of application development. It provides functionality to perform various operations such as adding, updating, deleting documents, querying collections, and managing transactions.

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

Adding Documents

This code sample demonstrates how to add a document to a Firestore collection. It creates a new document with a specified ID ('alovelace') and sets the data for the document.

const { Firestore } = require('@google-cloud/firestore');
const firestore = new Firestore();
const document = firestore.collection('users').doc('alovelace');
document.set({
  first: 'Ada',
  last: 'Lovelace',
  born: 1815
});

Updating Documents

This code sample shows how to update an existing document in a Firestore collection. It updates the 'born' field of the document with the ID 'alovelace'.

const { Firestore } = require('@google-cloud/firestore');
const firestore = new Firestore();
const document = firestore.collection('users').doc('alovelace');
document.update({
  born: 1816
});

Deleting Documents

This code sample illustrates how to delete a document from a Firestore collection. It deletes the document with the ID 'alovelace'.

const { Firestore } = require('@google-cloud/firestore');
const firestore = new Firestore();
const document = firestore.collection('users').doc('alovelace');
document.delete();

Querying Collections

This code sample demonstrates how to query documents in a Firestore collection that meet certain criteria. It retrieves all documents where the 'born' field is greater than 1800.

const { Firestore } = require('@google-cloud/firestore');
const firestore = new Firestore();
firestore.collection('users').where('born', '>', 1800).get()
  .then(snapshot => {
    snapshot.forEach(doc => console.log(doc.id, '=>', doc.data()));
  });

Managing Transactions

This code sample shows how to use transactions to read and write data atomically. It reads a document and then updates it within a transaction, ensuring that the operation is atomic.

const { Firestore } = require('@google-cloud/firestore');
const firestore = new Firestore();
let documentRef = firestore.collection('users').doc('alovelace');
firestore.runTransaction(transaction => {
  return transaction.get(documentRef).then(doc => {
    if (!doc.exists) {
      throw 'Document does not exist!';
    }
    let newBorn = doc.data().born + 1;
    transaction.update(documentRef, { born: newBorn });
  });
}).then(() => console.log('Transaction successfully committed!'))
.catch(error => console.log('Transaction failed: ', error));

Other packages similar to @google-cloud/firestore

mongoose

Mongoose is an npm package that provides a straight-forward, schema-based solution to model application data. It includes built-in type casting, validation, query building, and business logic hooks. It is designed for MongoDB, a different NoSQL database, and therefore has a different API and set of features compared to @google-cloud/firestore.

couchbase

Couchbase is an npm package for interacting with Couchbase Server, which is a NoSQL document database. It allows for flexible data modeling, full-text search, analytics, and query capabilities. The API and capabilities are different from @google-cloud/firestore as Couchbase is a different database with its own set of features and design considerations.

README

Google Cloud Firestore: Node.js Server SDK

This is the Node.js Server SDK for Google Cloud Firestore. Google Cloud Firestore is a NoSQL document database built for automatic scaling, high performance, and ease of application development.

This Cloud Firestore Server SDK uses Google’s Cloud Identity and Access Management for authentication and should only be used in trusted environments. Your Cloud Identity credentials allow you bypass all access restrictions and provide read and write access to all data in your Cloud Firestore project.

The Cloud Firestore Server SDKs are designed to manage the full set of data in your Cloud Firestore project and work best with reliable network connectivity. Data operations performed via these SDKs directly access the Cloud Firestore backend and all document reads and writes are optimized for high throughput.

Applications that use Google's Server SDKs should not be used in end-user environments, such as on phones or on publicly hosted websites. If you are developing a Web or Node.js application that accesses Cloud Firestore on behalf of end users, use the firebase Client SDK.

Table of contents:

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

Quickstart

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

• Cloud Firestore Node.js Client API Reference
• github.com/googleapis/nodejs-firestore
• Cloud Firestore Documentation

Before you begin

1. Select or create a Cloud Platform project.

   Go to the projects page

2. Enable the Google Cloud Firestore API.

   Enable the API

3. 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/firestore

Using the client library

const Firestore = require('@google-cloud/firestore');

const firestore = new Firestore({
  projectId: 'YOUR_PROJECT_ID',
  keyFilename: '/path/to/keyfile.json',
});

const document = firestore.doc('posts/intro-to-firestore');

// Enter new data into the document.
document.set({
  title: 'Welcome to Firestore',
  body: 'Hello World',
}).then(() => {
  // Document created successfully.
});

// Update an existing document.
document.update({
  body: 'My first Firestore app',
}).then(() => {
  // Document updated successfully.
});

// Read the document.
document.get().then(doc => {
  // Document read successfully.
});

// Delete the document.
document.delete().then(() => {
  // Document deleted successfully.
});

The Cloud Firestore Node.js Client API Reference documentation also contains samples.

Versioning

This library follows Semantic Versioning.

This library is considered to be in beta. This means it is expected to be mostly stable while we work toward a general availability release; however, complete stability is not guaranteed. We will address issues and requests against beta libraries with a high priority.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

License

Apache Version 2.0

See LICENSE