GeminiEmbeddingProvider.ts•2.7 kB
// Gemini Embedding Provider
// Users should implement this provider to use Google Gemini embeddings
import { BaseEmbeddingProvider } from '../BaseEmbeddingProvider.js';
import { PROVIDER_CONFIG } from '../../../core/config.js';
/**
* Gemini Embedding Provider Implementation
* Uses Google's Gemini AI for embeddings
*
* To implement:
* 1. Get API key from https://makersuite.google.com/app/apikey
* 2. Set GEMINI_API_KEY in environment
* 3. Implement generateEmbeddingsInternal method
*/
export class GeminiEmbeddingProvider extends BaseEmbeddingProvider {
protected getProviderType(): string {
return 'gemini';
}
protected getDefaultModel(): string {
return PROVIDER_CONFIG.GEMINI_MODEL || 'text-embedding-004';
}
protected getDefaultMaxBatchSize(): number {
return 100;
}
protected isLocalProvider(): boolean {
return false;
}
async isAvailable(): Promise<boolean> {
// Check if Gemini API key is configured
if (!PROVIDER_CONFIG.GEMINI_API_KEY) {
console.warn('Gemini API key not configured');
return false;
}
// TODO: Implement actual availability check
return true;
}
protected async generateEmbeddingsInternal(texts: string[]): Promise<number[][]> {
// TODO: Implement Gemini embedding generation
// Example implementation:
/*
const baseUrl = PROVIDER_CONFIG.GEMINI_BASE_URL || 'https://generativelanguage.googleapis.com';
const apiKey = PROVIDER_CONFIG.GEMINI_API_KEY;
const embeddings: number[][] = [];
// Process texts in parallel (Gemini supports batch requests)
const promises = texts.map(async (text) => {
const response = await fetch(
`${baseUrl}/v1beta/models/${this.getModel()}:embedContent?key=${apiKey}`,
{
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
content: {
parts: [{ text }]
}
})
}
);
if (!response.ok) {
const error = await response.text();
throw new Error(`Gemini error: ${response.status} - ${error}`);
}
const data = await response.json();
return data.embedding.values;
});
const results = await Promise.all(promises);
return results;
*/
throw new Error('Gemini provider not implemented. Please implement generateEmbeddingsInternal method.');
}
estimateCost(tokenCount: number): number {
// Gemini pricing (if applicable - currently free tier available)
return 0; // Update with actual pricing when available
}
}
console.log('✅ Gemini embedding provider template loaded');