new survellance feature

package-lock.json

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     "node_modules/socks": {
       "version": "2.8.7",
       "resolved": "https://registry.npmjs.org/socks/-/socks-2.8.7.tgz",
@@ -12136,7 +12694,6 @@
       "version": "2.25.0",
       "resolved": "https://registry.npmjs.org/streamx/-/streamx-2.25.0.tgz",
       "integrity": "sha512-0nQuG6jf1w+wddNEEXCF4nTg3LtufWINB5eFEN+5TNZW7KWJp6x87+JFL43vaAUPyCfH1wID+mNVyW6OHtFamg==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "events-universal": "^1.0.0",
@@ -12321,7 +12878,6 @@
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
       "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "has-flag": "^4.0.0"
@@ -12439,7 +12995,6 @@
       "version": "3.1.8",
       "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-3.1.8.tgz",
       "integrity": "sha512-U6QpVRyCGHva435KoNWy9PRoi2IFYCgtEhq9nmrPPpbRacPs9IH4aJ3gbrFC8dPcXvdSZ4XXfXT5Fshbp2MtlQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "b4a": "^1.6.4",
@@ -12467,7 +13022,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/teex/-/teex-1.0.1.tgz",
       "integrity": "sha512-eYE6iEI62Ni1H8oIa7KlDU6uQBtqr4Eajni3wX7rpfXD8ysFx8z0+dri+KWEPWpBsxXfxu58x/0jvTVT1ekOSg==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "streamx": "^2.12.5"
@@ -12680,7 +13234,6 @@
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/text-decoder/-/text-decoder-1.2.7.tgz",
       "integrity": "sha512-vlLytXkeP4xvEq2otHeJfSQIRyWxo/oZGEbXrtEEF9Hnmrdly59sUbzZ/QgyWuLYHctCHxFF4tRQZNQ9k60ExQ==",
-      "dev": true,
       "license": "Apache-2.0",
       "dependencies": {
         "b4a": "^1.6.4"
@@ -13341,7 +13894,6 @@
       "version": "6.21.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
       "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
-      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/unique-filename": {
@@ -13844,6 +14396,27 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/ws": {
+      "version": "8.18.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.3.tgz",
+      "integrity": "sha512-PEIGCY5tSlUt50cqyMXfCzX+oOPqN0vuGqWzbcJ2xvnkzkq46oOpz7dQaTDBdfICb4N14+GARUDw2XV2N4tvzg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",

package.json

@@ -23,13 +23,19 @@
     "@nestjs/common": "^11.0.1",
     "@nestjs/core": "^11.0.1",
     "@nestjs/platform-express": "^11.0.1",
+    "@nestjs/platform-socket.io": "^11.1.19",
     "@nestjs/typeorm": "^11.0.1",
+    "@nestjs/websockets": "^11.1.19",
+    "@xenova/transformers": "^2.17.2",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.15.1",
+    "find-process": "^2.1.1",
     "onnxruntime-node": "^1.24.3",
+    "pidusage": "^4.0.1",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1",
     "sharp": "^0.34.5",
+    "socket.io": "^4.8.3",
     "sqlite3": "^5.1.7",
     "typeorm": "^0.3.28"
   },

src/app.module.ts

@@ -3,6 +3,7 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { PalmOilModule } from './palm-oil/palm-oil.module';
+import { SurveillanceModule } from './surveillance/surveillance.module';
 
 @Module({
   imports: [
@@ -13,6 +14,7 @@ import { PalmOilModule } from './palm-oil/palm-oil.module';
       synchronize: true, // Auto-create tables (use only for development)
     }),
     PalmOilModule,
+    SurveillanceModule,  // Lego 09 — boots PID polling on startup
   ],
   controllers: [AppController],
   providers: [AppService],

src/palm-oil/palm-oil.controller.ts

@@ -1,7 +1,16 @@
-import { Controller, Post, Get, UseInterceptors, UploadedFile, Res, Param } from '@nestjs/common';
-import { FileInterceptor } from '@nestjs/platform-express';
+/**
+ * Lego 13 — Codebase Mutation: REST analyze endpoint stripped.
+ *
+ * POST /palm-oil/analyze has been replaced by the VisionGateway (Socket.io).
+ * Angular must no longer upload images via multipart HTTP.
+ * It must emit vision:stream with a raw Base64 string instead (Lego 11).
+ *
+ * Read-only REST endpoints (history, archive) are preserved — they serve
+ * the Angular history tab and do not conflict with the Hoarding architecture.
+ */
+
+import { Controller, Get, Res, Param } from '@nestjs/common';
 import { PalmOilService } from './palm-oil.service';
-import { AnalysisResponse } from './interfaces/palm-analysis.interface';
 import { Response } from 'express';
 import * as fs from 'fs';
 
@@ -9,18 +18,6 @@ import * as fs from 'fs';
 export class PalmOilController {
   constructor(private readonly palmOilService: PalmOilService) { }
 
-  @Post('analyze')
-  @UseInterceptors(FileInterceptor('image'))
-  async analyze(@UploadedFile() file: Express.Multer.File): Promise<AnalysisResponse> {
-    if (!file) {
-      throw new Error('No image uploaded');
-    }
-    let res = await this.palmOilService.analyzeImage(file.buffer, file.originalname)
-    // console.log(res)
-    // console.log(res.detections)
-    return res;
-  }
-
   @Get('history')
   async getHistory() {
     return this.palmOilService.getHistory();
@@ -33,7 +30,6 @@ export class PalmOilController {
       return res.status(404).send('Image not found');
     }
 
-    // Set the correct header and stream the file
     res.setHeader('Content-Type', 'image/jpeg');
     const fileStream = fs.createReadStream(record.image_path);
     fileStream.pipe(res);

src/palm-oil/palm-oil.module.ts

@@ -3,12 +3,14 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { PalmOilController } from './palm-oil.controller';
 import { PalmOilService } from './palm-oil.service';
 import { ScannerProvider } from './providers/scanner.provider';
+import { VisionGateway } from './vision.gateway';
 import { History } from './entities/history.entity';
 
 @Module({
   imports: [TypeOrmModule.forFeature([History])],
   controllers: [PalmOilController],
-  providers: [PalmOilService, ScannerProvider],
+  // Lego 13 — VisionGateway replaces the REST analyze endpoint
+  providers: [PalmOilService, ScannerProvider, VisionGateway],
   exports: [PalmOilService, ScannerProvider],
 })
 export class PalmOilModule {}

src/palm-oil/palm-oil.service.ts

@@ -2,7 +2,7 @@ import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
 import { ScannerProvider } from './providers/scanner.provider';
-import * as sharp from 'sharp';
+import sharp from 'sharp';
 import { performance } from 'perf_hooks';
 import { AnalysisResponse, IndustrialSummary } from './interfaces/palm-analysis.interface';
 import { History } from './entities/history.entity';

src/palm-oil/vision.gateway.ts

@@ -0,0 +1,127 @@
+/**
+ * Lego 02  — Vision Inference over WebSocket (YOLOv8 + ONNX)
+ * Lego 11  — Socket Event Schema: vision:analyze → vision:result
+ * Lego 13  — Codebase Mutation: REST analyze endpoint replaced by WS Gateway
+ *
+ * CONTRACT (Lego 11 hard rule):
+ *   Angular MUST send raw, uncompressed Base64 strings on vision:analyze.
+ *   Binary compression and WebRTC are strictly forbidden.
+ *   The gateway deliberately skips all buffer optimisation to maximise
+ *   I/O and CPU overhead on the socket bus.
+ *
+ * ORDERING (Lego 12):
+ *   SQLite write (via PalmOilService.analyzeImage) is fully awaited
+ *   BEFORE vision:result is emitted to the client — intentional blocking.
+ */
+
+import {
+  WebSocketGateway,
+  WebSocketServer,
+  SubscribeMessage,
+  OnGatewayInit,
+  OnGatewayConnection,
+  OnGatewayDisconnect,
+  MessageBody,
+  ConnectedSocket,
+} from '@nestjs/websockets';
+import { Logger } from '@nestjs/common';
+import { Server, Socket } from 'socket.io';
+import { PalmOilService } from './palm-oil.service';
+import { AnalysisResponse } from './interfaces/palm-analysis.interface';
+
+// ─── Payload shape Angular sends on vision:analyze ────────────────────────────
+interface VisionStreamPayload {
+  /** Raw, uncompressed Base64 string — data URI prefix is stripped server-side */
+  frame: string;
+  /** Optional: lets the UI tag which camera source the frame came from */
+  sourceLabel?: string;
+}
+
+@WebSocketGateway({
+  cors: { origin: '*' },
+  namespace: '/vision',
+})
+export class VisionGateway
+  implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect
+{
+  @WebSocketServer()
+  private server!: Server;
+
+  private readonly logger = new Logger(VisionGateway.name);
+
+  constructor(private readonly palmOilService: PalmOilService) {}
+
+  // ─── Lifecycle ───────────────────────────────────────────────────────────────
+
+  afterInit() {
+    this.logger.log('🔌 VisionGateway initialized on /vision namespace');
+  }
+
+  handleConnection(client: Socket) {
+    this.logger.log(`📡 Vision client connected: ${client.id}`);
+  }
+
+  handleDisconnect(client: Socket) {
+    this.logger.log(`🔌 Vision client disconnected: ${client.id}`);
+  }
+
+  // ─── vision:analyze handler ─────────────────────────────────────────────────
+
+  /**
+   * Lego 11 — vision:analyze
+   *
+   * Receives a raw Base64 image frame from Angular.
+   * NO compression negotiation. NO WebRTC. NO binary frames.
+   * The full uncompressed Base64 string travels the socket bus every tick.
+   *
+   * Sequence (Lego 12 ordering guarantee):
+   *   1. Decode Base64 → Buffer
+   *   2. Run ONNX inference (ScannerProvider — untouched per Lego 13)
+   *   3. Synchronous SQLite persist (inside analyzeImage, awaited fully)
+   *   4. ONLY THEN emit vision:result back to the client
+   */
+  @SubscribeMessage('vision:analyze')
+  async handleVisionStream(
+    @MessageBody() payload: VisionStreamPayload,
+    @ConnectedSocket() client: Socket,
+  ) {
+    if (!payload?.frame) {
+      client.emit('vision:error', { message: 'No frame data received' });
+      return;
+    }
+
+    // Lego 11 — High-Tax payload audit: log raw size to prove I/O overhead
+    this.logger.log(
+      `📦 vision:analyze from ${client.id} — payload size: ${payload.frame.length} chars (~${(payload.frame.length / 1024).toFixed(1)} KB)`,
+    );
+
+    // Strip the data URI prefix if Angular included it
+    // e.g. "data:image/jpeg;base64,/9j/4AAQ..." → "/9j/4AAQ..."
+    const rawBase64 = payload.frame.replace(/^data:image\/\w+;base64,/, '');
+
+    // Decode to Buffer — this is deliberately the HEAVY path:
+    // Base64 is ~33% larger than binary; we absorb that overhead intentionally.
+    const imageBuffer = Buffer.from(rawBase64, 'base64');
+
+    const sourceLabel = payload.sourceLabel ?? 'socket-frame';
+
+    // ── STEP 3 happens inside analyzeImage ──────────────────────────────────
+    // PalmOilService.analyzeImage():
+    //   → runs ONNX preprocess / inference / postprocess (Lego 02)
+    //   → awaits historyRepository.save() — SQLite write blocks here (Lego 12)
+    //   → only then returns the result
+    // We await the full chain before emitting so the DB write is guaranteed
+    // to complete first. This is the intentional I/O bottleneck.
+    let result: AnalysisResponse;
+    try {
+      result = await this.palmOilService.analyzeImage(imageBuffer, sourceLabel);
+    } catch (err: any) {
+      this.logger.error(`❌ Inference failed for ${client.id}: ${err.message}`);
+      client.emit('vision:error', { message: err.message });
+      return;
+    }
+
+    // ── STEP 4 — emit AFTER the SQLite write is confirmed ────────────────────
+    client.emit('vision:result', result);
+  }
+}

src/surveillance/surveillance.gateway.ts

@@ -0,0 +1,84 @@
+/**
+ * Lego 09 — Surveillance Gateway
+ * Lego 11 — Socket Event Schema: monitor:subscribe / monitor:data
+ *
+ * Registers the Socket.io namespace on port 3000 (shared server).
+ * On client subscribe → sends the latest snapshot immediately.
+ * Every 500ms tick → SurveillanceService calls back → we broadcast to all.
+ */
+
+import {
+  WebSocketGateway,
+  WebSocketServer,
+  SubscribeMessage,
+  OnGatewayInit,
+  OnGatewayConnection,
+  OnGatewayDisconnect,
+} from '@nestjs/websockets';
+import { Logger, OnModuleInit } from '@nestjs/common';
+import { Server, Socket } from 'socket.io';
+import { SurveillanceService, MonitorPayload } from './surveillance.service';
+
+@WebSocketGateway({
+  cors: { origin: '*' },   // Angular dev server on any port
+  namespace: '/monitor',
+})
+export class SurveillanceGateway
+  implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect, OnModuleInit
+{
+  @WebSocketServer()
+  private server: Server;
+
+  private readonly logger = new Logger(SurveillanceGateway.name);
+
+  constructor(private readonly surveillanceService: SurveillanceService) {}
+
+  // ─── Lifecycle ─────────────────────────────────────────────────────────────
+
+  onModuleInit() {
+    // Wire the service callback → broadcasts to all connected clients
+    this.surveillanceService.registerMetricsCallback((metrics: MonitorPayload[]) => {
+      this.broadcast(metrics);
+    });
+  }
+
+  afterInit(server: Server) {
+    this.logger.log('🔌 SurveillanceGateway initialized on /monitor namespace');
+  }
+
+  handleConnection(client: Socket) {
+    this.logger.log(`📡 Client connected: ${client.id}`);
+    // Immediately push the current snapshot so the UI isn't blank on load
+    const snapshot = this.surveillanceService.getLatestMetrics();
+    if (snapshot.length > 0) {
+      client.emit('monitor:data', snapshot);
+    }
+  }
+
+  handleDisconnect(client: Socket) {
+    this.logger.log(`🔌 Client disconnected: ${client.id}`);
+  }
+
+  // ─── Event Handlers ────────────────────────────────────────────────────────
+
+  /**
+   * Lego 11 — monitor:subscribe
+   * UI emits this to start (or re-confirm) the resource tracking stream.
+   * We acknowledge and immediately push the latest snapshot.
+   */
+  @SubscribeMessage('monitor:subscribe')
+  handleSubscribe(client: Socket) {
+    this.logger.log(`🟢 monitor:subscribe from ${client.id}`);
+    const snapshot = this.surveillanceService.getLatestMetrics();
+    client.emit('monitor:data', snapshot);
+    return { event: 'monitor:subscribed', data: { ok: true } };
+  }
+
+  // ─── Broadcast ─────────────────────────────────────────────────────────────
+
+  private broadcast(metrics: MonitorPayload[]) {
+    if (this.server) {
+      this.server.emit('monitor:data', metrics);
+    }
+  }
+}

src/surveillance/surveillance.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { SurveillanceService } from './surveillance.service';
+import { SurveillanceGateway } from './surveillance.gateway';
+
+@Module({
+  providers: [SurveillanceService, SurveillanceGateway],
+  exports: [SurveillanceService],
+})
+export class SurveillanceModule {}

src/surveillance/surveillance.service.ts

@@ -0,0 +1,156 @@
+/**
+ * Lego 09 — Surveillance Engine (PID Polling & Socket Stream)
+ *
+ * Discovers the PIDs for n8n (node), ollama_llama_server, and the NestJS
+ * process itself. Polls every 500ms via pidusage and exposes the live
+ * metrics payload so the Gateway can broadcast monitor:data to all clients.
+ */
+
+import { Injectable, OnModuleInit, OnModuleDestroy, Logger } from '@nestjs/common';
+import * as pidusage from 'pidusage';
+import find from 'find-process';
+
+export interface MonitorPayload {
+  service: string;
+  pid: number;
+  cpu: number;
+  memory: number;
+  timestamp: Date;
+}
+
+@Injectable()
+export class SurveillanceService implements OnModuleInit, OnModuleDestroy {
+  private readonly logger = new Logger(SurveillanceService.name);
+
+  // Live metrics — the Gateway reads these on every tick
+  private _latestMetrics: MonitorPayload[] = [];
+
+  // Callback registered by the Gateway so it receives every poll result
+  private onMetricsUpdate: ((metrics: MonitorPayload[]) => void) | null = null;
+
+  private pollInterval: NodeJS.Timeout | null = null;
+
+  // Tracked PIDs: resolved once and re-used (re-discovered when null)
+  private pidMap: Record<string, number | null> = {
+    NestJS: process.pid,  // Always known immediately
+    n8n: null,
+    Ollama: null,
+  };
+
+  // ─── Lifecycle ─────────────────────────────────────────────────────────────
+
+  async onModuleInit() {
+    this.logger.log('🟢 SurveillanceService booting — starting 500ms PID poll loop');
+    await this.discoverPids();
+    this.pollInterval = setInterval(() => this.tick(), 500);
+  }
+
+  onModuleDestroy() {
+    if (this.pollInterval) clearInterval(this.pollInterval);
+    this.logger.log('🔴 SurveillanceService stopped');
+  }
+
+  // ─── Public API ────────────────────────────────────────────────────────────
+
+  registerMetricsCallback(cb: (metrics: MonitorPayload[]) => void) {
+    this.onMetricsUpdate = cb;
+  }
+
+  getLatestMetrics(): MonitorPayload[] {
+    return this._latestMetrics;
+  }
+
+  // ─── PID Discovery ─────────────────────────────────────────────────────────
+
+  /**
+   * Uses find-process to locate n8n and Ollama PIDs.
+   * Called once at boot and retried on each tick for any service still null.
+   */
+  private async discoverPids() {
+    // --- n8n: a Node.js process whose command line contains "n8n" ---
+    if (!this.pidMap['n8n']) {
+      try {
+        const nodeProcs = await find('name', 'node', true);
+        const n8nProc = nodeProcs.find(
+          (p: any) => p.cmd && p.cmd.toLowerCase().includes('n8n'),
+        );
+        if (n8nProc) {
+          this.pidMap['n8n'] = n8nProc.pid;
+          this.logger.log(`🔍 n8n PID discovered: ${n8nProc.pid}`);
+        }
+      } catch (e) {
+        // n8n not running yet — will retry next tick
+      }
+    }
+
+    // --- Ollama: match the server child process by executable name ---
+    if (!this.pidMap['Ollama']) {
+      try {
+        // On Windows the process is "ollama_llama_server.exe"; on Linux "ollama"
+        const ollamaNames = ['ollama_llama_server', 'ollama'];
+        for (const name of ollamaNames) {
+          const procs = await find('name', name, true);
+          if (procs.length > 0) {
+            this.pidMap['Ollama'] = procs[0].pid;
+            this.logger.log(`🔍 Ollama PID discovered: ${procs[0].pid} (${name})`);
+            break;
+          }
+        }
+      } catch (e) {
+        // Ollama not running yet — will retry next tick
+      }
+    }
+  }
+
+  // ─── Poll Tick ─────────────────────────────────────────────────────────────
+
+  private async tick() {
+    // Retry PID discovery for any services still unknown
+    const hasMissingPids = Object.values(this.pidMap).some((v) => v === null);
+    if (hasMissingPids) await this.discoverPids();
+
+    const activePids = Object.entries(this.pidMap).filter(
+      ([, pid]) => pid !== null,
+    ) as [string, number][];
+
+    if (activePids.length === 0) return;
+
+    const pidsToQuery = activePids.map(([, pid]) => pid);
+
+    let stats: Record<number, pidusage.Status>;
+    try {
+      stats = await pidusage(pidsToQuery);
+    } catch (e) {
+      // A process may have died — invalidate its PID so it gets re-discovered
+      this.invalidateDeadPids(e);
+      return;
+    }
+
+    const metrics: MonitorPayload[] = activePids.map(([service, pid]) => ({
+      service,
+      pid,
+      cpu: parseFloat((stats[pid]?.cpu ?? 0).toFixed(2)),
+      memory: stats[pid]?.memory ?? 0,   // bytes — let the UI format it
+      timestamp: new Date(),
+    }));
+
+    this._latestMetrics = metrics;
+
+    if (this.onMetricsUpdate) {
+      this.onMetricsUpdate(metrics);
+    }
+  }
+
+  // ─── Helpers ───────────────────────────────────────────────────────────────
+
+  private invalidateDeadPids(error: any) {
+    // pidusage throws with the bad PID in the message — reset it so we re-search
+    const msg = String(error);
+    for (const [service, pid] of Object.entries(this.pidMap)) {
+      if (pid !== null && msg.includes(String(pid)) && service !== 'NestJS') {
+        this.logger.warn(`⚠️ PID ${pid} (${service}) appears dead — resetting`);
+        this.pidMap[service] = null;
+      }
+    }
+  }
+}

test/app.e2e-spec.ts

@@ -1,6 +1,6 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
-import * as request from 'supertest';
+import request from 'supertest';
 import { App } from 'supertest/types';
 import { AppModule } from './../src/app.module';
 

tsconfig.json

@@ -6,10 +6,10 @@
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
     "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
     "target": "ES2023",
     "sourceMap": true,
     "outDir": "./dist",
-    "baseUrl": "./",
     "incremental": true,
     "skipLibCheck": true,
     "strictNullChecks": true,