feat: decoupled training telemetry microservice

vibn-frontend/lib/ai/gemini-chat.ts

@@ -1,5 +1,6 @@
 import { GoogleGenAI } from "@google/genai";
 import fs from "fs";
+import { logTrainingTelemetryDb } from "./telemetry-db";
 
 const GEMINI_API_KEY = process.env.GOOGLE_API_KEY || "";
 const GEMINI_MODEL = process.env.VIBN_CHAT_MODEL || "gemini-3.1-pro-preview";
@@ -140,11 +141,13 @@ export async function callGeminiChat(opts: {
     );
     console.log("========================================================\n");
 
+    const startTime = Date.now();
     const response = await ai.models.generateContent({
       model: GEMINI_MODEL,
       contents: toGeminiContents(opts.messages),
       config,
     });
+    const durationMs = Date.now() - startTime;
 
     console.log("\n========================================================");
     console.log("⬅️ [GEMINI API RESPONSE]");
@@ -204,6 +207,19 @@ export async function callGeminiChat(opts: {
       text = thoughts.trim();
     }
 
+    logTrainingTelemetryDb({
+      model: GEMINI_MODEL,
+      systemPrompt: opts.systemPrompt,
+      messages: opts.messages,
+      response: { text, thoughts, toolCalls },
+      metrics: {
+        promptTokens: response.usageMetadata?.promptTokenCount,
+        completionTokens: response.usageMetadata?.candidatesTokenCount,
+        totalTokens: response.usageMetadata?.totalTokenCount,
+        durationMs,
+      },
+    });
+
     return {
       text,
       thoughts,
@@ -251,6 +267,7 @@ export async function* streamGeminiChat(opts: {
     );
     console.log("========================================================\n");
 
+    const startTime = Date.now();
     const streamResult = await ai.models.generateContentStream({
       model: GEMINI_MODEL,
       contents: toGeminiContents(opts.messages),
@@ -261,16 +278,38 @@ export async function* streamGeminiChat(opts: {
     const isPartThought = (p: Record<string, unknown>) =>
       Boolean(p.thought || p.thoughtSignature);
 
+    let text = "";
+    let thoughts = "";
+    const toolCalls: any[] = [];
+
     for await (const chunk of streamResult) {
       const parts = chunk.candidates?.[0]?.content?.parts ?? [];
       for (const part of parts) {
         if (part.text) {
-          yield isPartThought(part as Record<string, unknown>)
-            ? { type: "thinking", text: part.text }
-            : { type: "text", text: part.text };
+          if (isPartThought(part as Record<string, unknown>)) {
+            thoughts += part.text;
+            yield { type: "thinking", text: part.text };
+          } else {
+            text += part.text;
+            yield { type: "text", text: part.text };
+          }
+        }
+        if (part.functionCall) {
+          toolCalls.push(part.functionCall);
         }
       }
     }
+    const durationMs = Date.now() - startTime;
+
+    logTrainingTelemetryDb({
+      model: GEMINI_MODEL,
+      systemPrompt: opts.systemPrompt,
+      messages: opts.messages,
+      response: { text, thoughts, toolCalls },
+      metrics: {
+        durationMs,
+      },
+    });
 
     yield { type: "done" };
   } catch (error) {

vibn-frontend/lib/ai/telemetry-db.ts

@@ -0,0 +1,46 @@
+export interface TelemetryPayload {
+  projectId?: string;
+  model: string;
+  systemPrompt: string;
+  messages: any[];
+  response: {
+    text: string;
+    thoughts: string;
+    toolCalls: any[];
+  };
+  metrics: {
+    promptTokens?: number;
+    completionTokens?: number;
+    totalTokens?: number;
+    durationMs: number;
+  };
+}
+
+// Fire and forget function to send telemetry to our Coolify Microservice
+export function logTrainingTelemetryDb(data: TelemetryPayload) {
+  setTimeout(async () => {
+    try {
+      const telemetryUrl = process.env.TELEMETRY_SERVICE_URL;
+
+      if (!telemetryUrl) {
+        console.warn(
+          "[Telemetry] TELEMETRY_SERVICE_URL is not set. Skipping log.",
+        );
+        return;
+      }
+
+      await fetch(`${telemetryUrl}/ingest`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify(data),
+      });
+    } catch (error) {
+      console.error(
+        "[Telemetry] Failed to send training data to microservice:",
+        error,
+      );
+    }
+  }, 0);
+}

vibn-frontend/lib/db/knowledge-chunks-schema.sql

@@ -1,117 +1,21 @@
--- =====================================================================
--- knowledge_chunks table: Stores chunked content with vector embeddings
--- =====================================================================
--- 
--- This table stores semantic chunks of knowledge_items for vector search.
--- Each chunk is embedded using an LLM embedding model (e.g., Gemini embeddings)
--- and stored with pgvector for efficient similarity search.
---
--- Prerequisites:
--- 1. Enable pgvector extension: CREATE EXTENSION IF NOT EXISTS vector;
--- 2. Enable uuid generation: CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
---
-
--- Enable required extensions
-CREATE EXTENSION IF NOT EXISTS vector;
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-
--- Create the knowledge_chunks table
-CREATE TABLE IF NOT EXISTS knowledge_chunks (
-  -- Primary key (UUID auto-generated)
+-- Add the telemetry table script alongside your existing db scripts
+CREATE TABLE IF NOT EXISTS agent_telemetry (
   id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-  
-  -- References to parent entities (Firestore IDs stored as TEXT)
-  project_id TEXT NOT NULL,
-  knowledge_item_id TEXT NOT NULL,
-  
-  -- Chunk metadata
-  chunk_index INT NOT NULL,
-  content TEXT NOT NULL,
-  
-  -- Vector embedding (768 dimensions for Gemini text-embedding-004)
-  -- NOTE: OpenAI embeddings use 1536 dims, but Gemini uses 768
-  embedding VECTOR(768) NOT NULL,
-  
-  -- Source and importance metadata (optional, from knowledge_items)
-  source_type TEXT,
-  importance TEXT CHECK (importance IN ('primary', 'supporting', 'irrelevant') OR importance IS NULL),
-  
-  -- Timestamps
-  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-  updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  project_id VARCHAR(255),
+  model_used VARCHAR(255) NOT NULL,
+  system_prompt TEXT NOT NULL,
+  chat_history JSONB NOT NULL,
+  response_text TEXT,
+  response_thoughts TEXT,
+  tool_calls JSONB,
+  prompt_tokens INTEGER,
+  completion_tokens INTEGER,
+  total_tokens INTEGER,
+  duration_ms INTEGER NOT NULL
 );
 
--- =====================================================================
--- Indexes for efficient querying
--- =====================================================================
-
--- Standard indexes for filtering by project and knowledge_item
-CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_project_id 
-  ON knowledge_chunks (project_id);
-
-CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_knowledge_item_id 
-  ON knowledge_chunks (knowledge_item_id);
-
--- Composite index for project + knowledge_item queries
-CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_project_knowledge 
-  ON knowledge_chunks (project_id, knowledge_item_id);
-
--- Index for chunk ordering within a knowledge_item
-CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_item_index 
-  ON knowledge_chunks (knowledge_item_id, chunk_index);
-
--- Vector similarity index using IVFFlat (pgvector)
--- This enables fast approximate nearest neighbor search
--- The 'lists' parameter controls the number of clusters (tune based on data size)
--- For < 100k rows, lists=100 is reasonable. Scale up for larger datasets.
--- Using cosine distance (vector_cosine_ops) for semantic similarity
-CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_embedding 
-  ON knowledge_chunks 
-  USING ivfflat (embedding vector_cosine_ops) 
-  WITH (lists = 100);
-
--- Alternative: Use HNSW index for better recall at higher cost
--- Uncomment if you prefer HNSW over IVFFlat:
--- CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_embedding_hnsw 
---   ON knowledge_chunks 
---   USING hnsw (embedding vector_cosine_ops) 
---   WITH (m = 16, ef_construction = 64);
-
--- =====================================================================
--- Optional: Trigger to auto-update updated_at timestamp
--- =====================================================================
-CREATE OR REPLACE FUNCTION update_updated_at_column()
-RETURNS TRIGGER AS $$
-BEGIN
-  NEW.updated_at = NOW();
-  RETURN NEW;
-END;
-$$ LANGUAGE plpgsql;
-
-CREATE TRIGGER update_knowledge_chunks_updated_at
-  BEFORE UPDATE ON knowledge_chunks
-  FOR EACH ROW
-  EXECUTE FUNCTION update_updated_at_column();
-
--- =====================================================================
--- Helpful queries for monitoring and debugging
--- =====================================================================
-
--- Count chunks per project
--- SELECT project_id, COUNT(*) as chunk_count FROM knowledge_chunks GROUP BY project_id;
-
--- Count chunks per knowledge_item
--- SELECT knowledge_item_id, COUNT(*) as chunk_count FROM knowledge_chunks GROUP BY knowledge_item_id;
-
--- Find chunks similar to a query vector (example)
--- SELECT id, content, 1 - (embedding <=> '[0.1, 0.2, ...]') AS similarity
--- FROM knowledge_chunks
--- WHERE project_id = 'your-project-id'
--- ORDER BY embedding <=> '[0.1, 0.2, ...]'
--- LIMIT 10;
-
--- Check index usage
--- SELECT schemaname, tablename, indexname, idx_scan, idx_tup_read, idx_tup_fetch
--- FROM pg_stat_user_indexes
--- WHERE tablename = 'knowledge_chunks';
-
+-- Index for fast querying by project
+CREATE INDEX IF NOT EXISTS idx_agent_telemetry_project ON agent_telemetry(project_id);
+-- Index for chronological sorting
+CREATE INDEX IF NOT EXISTS idx_agent_telemetry_created_at ON agent_telemetry(created_at DESC);