Firebase plugin for Genkit

See the official documentation for more:

• Deploying Genkit with Firebase
• Genkit monitoring with Firebase

Installing the plugin

npm i --save @genkit-ai/firebase

Using the plugin

import { genkit } from 'genkit';
import { enableFirebaseTelemetry } from '@genkit-ai/firebase';

enableFirebaseTelemetry();

const ai = genkit({
  plugins: [
    // ...
  ],
});

Durable Streaming (Beta)

This plugin provides two StreamManager implementations for durable streaming:

• FirestoreStreamManager: Persists stream state in Google Firestore.
• RtdbStreamManager: Persists stream state in the Firebase Realtime Database.

You can use these with expressHandler or appRoute to make your flow streams durable.

Usage

To use a stream manager, import it from @genkit-ai/firebase/beta and provide it to your flow handler:

import { expressHandler } from '@genkit-ai/express';
import { FirestoreStreamManager } from '@genkit-ai/firebase/beta';
import express from 'express';
import { initializeApp } from 'firebase-admin/app';
import { getFirestore } from 'firebase-admin/firestore';

// ... define your flow: myFlow

const fApp = initializeApp();
const firestore = new FirestoreStreamManager({
  firebaseApp: fApp,
  db: getFirestore(fApp),
  collection: 'streams',
});

const app = express();
app.use(express.json());

app.post('/myDurableFlow', expressHandler(myFlow, { streamManager: firestore }));

app.listen(8080);

Similarly, for the Realtime Database:

import { RtdbStreamManager } from '@genkit-ai/firebase/beta';

const rtdb = new RtdbStreamManager({
  firebaseApp: fApp,
  refPrefix: 'streams',
});

app.post('/myDurableRtdbFlow', expressHandler(myFlow, { streamManager: rtdb }));

Limitations

• Firestore: The entire stream history (chunks and final result) is stored in a single document. Firestore has a strict 1MB limitation on document size. If your stream output exceeds this limit, the flow will fail.
• Realtime Database: While RTDB does not have the same 1MB limit, storing very large streams may impact performance or hit other quotas.

The sources for this package are in the main Genkit repo. Please file issues and pull requests against that repo.

Usage information and reference details can be found in Genkit documentation.

License: Apache 2.0