nalaka/firestore

Firestore Module

A Ballerina module for accessing Google Cloud Firestore database with authentication support.

Overview

This module provides a simple interface to interact with Google Cloud Firestore, including:

• Document creation
• Document querying with filters
• Firebase/Google Cloud authentication
• Automatic data type conversion between Ballerina and Firestore formats

Features

• Document Operations: Create and query documents in Firestore collections
• Authentication: Integrated Google Cloud authentication using service account
• Type Safety: Automatic conversion between Ballerina types and Firestore field types
• Filtering: Support for single and multiple field filters with AND operations
• Error Handling: Comprehensive error handling for all operations

Usage

Configuration

import nalaka/firestore;

public function main() returns error? {
    firestore:AuthConfig authConfig = {
        serviceAccountPath: "./path/to/service-account.json",
        privateKeyPath: "./path/to/private-key.pem",
        jwtConfig: {
            scope: "https://www.googleapis.com/auth/datastore",
            expTime: 3600
        }
    };

    firestore:Client firestoreClient = check new(authConfig);
    
    // Your operations here
}

Creating Documents

string accessToken = check firestoreClient.generateToken();

map<json> documentData = {
    "name": "John Doe",
    "age": 30,
    "active": true,
    "metadata": {
        "created": "2024-01-01",
        "tags": ["user", "active"]
    }
};

check firestore:createFirestoreDocument(
    "your-project-id",
    accessToken,
    "users",
    documentData
);

Querying Documents

string accessToken = check firestoreClient.generateToken();

map<json> filter = {
    "active": true,
    "age": 30
};

map<json>[] results = check firestore:queryFirestoreDocuments(
    "your-project-id",
    accessToken,
    "users",
    filter
);

foreach var doc in results {
    io:println("Document: ", doc);
}

Supported Data Types

The module automatically converts between Ballerina and Firestore types:

API Reference

Types

• ServiceAccount: Service account configuration record
• FirebaseConfig: Firebase project configuration (optional)
• JWTConfig: JWT token configuration
• AuthConfig: Authentication configuration for the client

Functions

• createFirestoreDocument(): Create a new document in a collection
• queryFirestoreDocuments(): Query documents with filters
• processFirestoreValue(): Convert Ballerina values to Firestore format
• extractFirestoreValue(): Convert Firestore values to Ballerina format
• buildFirestoreFilter(): Build Firestore query filters

Client

• Client: Main client class for authentication and token management
• generateToken(): Generate OAuth2 access token for Firestore API calls

Requirements

• Ballerina Swan Lake 2201.8.0 or later
• Google Cloud Project with Firestore enabled
• Service Account with Firestore permissions
• Service Account JSON key file

License

This module is available under the Apache 2.0 license.