Fixes

aiworker/.env

@@ -1,5 +1,5 @@
 # VideoDetect — Docker Compose environment variables
 # Copy this file to .env and fill in real values before running docker-compose up.
 
-API_HOST=https://10.0.1.7:3000
+API_HOST=https://10.0.1.34:3000
 

aiworker/docker-compose.yml

@@ -9,7 +9,7 @@ services:
     container_name: videodetect-aiworker
     restart: "no"
     environment:
-      - API_BASE_URL=${API_BASE_URL:-http://10.0.1.7:3000}
+      - API_BASE_URL=${API_BASE_URL:-http://10.0.1.34:3000}
       - OLLAMA_URL=${OLLAMA_URL:-http://10.0.1.7:11434}
       - SECONDS_PER_FRAME=${SECONDS_PER_FRAME:-30}
       - TASK_COUNT=${TASK_COUNT:-50}

api/app.pl

@@ -3,6 +3,7 @@ use strict;
 use Dancer2;
 use Dancer2::Plugin::Database;
 use Data::Dumper;
+use JSON ();
 use SQL::SplitStatement;
 use HTTP::Lite;
 
@@ -83,12 +84,42 @@ post '/api/v1/video' => sub {
 
 get '/api/v1/tasks' => sub {
     my $status = query_parameters->get("status") || 'PENDING';
-    my $sth = database->prepare("SELECT id, video_id, status FROM tasks WHERE status=? ORDER BY id");
+    my $type = query_parameters->get("type");
-    $sth->execute($status);
+
-    my $ref = $sth->fetchall_hashref('id');
+    unless ($type) {
+        send_error("Missing 'type' query parameter", 400);
+    }
+
+    # Optional pagination
+    my $page      = query_parameters->get("page")      || 1;
+    my $per_page  = query_parameters->get("per_page")  || 20;
+    my $offset    = ($page - 1) * $per_page;
+
+    my $sth = database->prepare(
+        "SELECT id, video_id, task_type AS type, status FROM tasks WHERE status=? AND task_type=? ORDER BY id LIMIT ? OFFSET ?"
+    );
+    $sth->execute($status, $type, $per_page, $offset);
+    my $ref = [];
+    while(my $row = $sth->fetchrow_hashref()) {
+        push @$ref, $row;
+    }
     $sth->finish();
 
-    return $ref;
+    # Total count for pagination metadata
+    my $count_sth = database->prepare(
+        "SELECT COUNT(*) AS cnt FROM tasks WHERE status=? AND task_type=?"
+    );
+    $count_sth->execute($status, $type);
+    my $cnt = ($count_sth->fetchrow_hashref() || { cnt => 0 })->{cnt};
+    $count_sth->finish();
+
+    return {
+        tasks       => $ref,
+        page        => $page,
+        per_page    => $per_page,
+        total       => $cnt,
+        total_pages => max(1, int(($cnt + $per_page - 1) / $per_page)),
+    };
 };
 
 get '/api/v1/task/:task' => sub {
@@ -129,13 +160,13 @@ get '/api/v1/nexttask/:type' => sub {
 };
 
 post '/api/v1/task/:task/complete' => sub {
-    my $task = route_parameters->get("task");
+    my $task_id = route_parameters->get("task");
 
     # Accept both JSON body and form-encoded data for assign_key/results.
     my ($assign_key, $results);
     my $ct = request_header('Content-Type') || '';
-    if ($ct eq 'application/json') {
+    if ($ct =~ m{application/json}i) {
-        my $body = decode_json(request->body());
+        my $body = JSON::decode_json(request->body());
         $assign_key = $body->{assign_key};
         $results    = $body->{results};
     } else {
@@ -143,24 +174,31 @@ post '/api/v1/task/:task/complete' => sub {
         $results    = body_parameters->get("results");
     }
 
-    unless ($assign_key) {
+    # Optional worker verification: if assign_key is provided, require IN_PROGRESS + matching key.
-        send_error("Missing assign_key", 400);
+    # When omitted (e.g., UI-driven workflows), skip worker checks and just complete the task.
-    }
+    if ($assign_key) {
+        my $sth = database->prepare("SELECT * FROM tasks WHERE id=? AND assign_key=? AND status='IN_PROGRESS'");
+        $sth->execute($task_id, $assign_key);
+        my $ref = $sth->fetchrow_hashref();
+        $sth->finish();
 
-    # Verify the task is assigned to the worker
+        unless(ref $ref) {
-    my $sth = database->prepare("SELECT * FROM tasks WHERE id=? AND assign_key=? AND status='IN_PROGRESS'");
+            send_error("Task not assigned to this worker or not in progress", 403);
-    $sth->execute($task, $assign_key);
+        }
-    my $ref = $sth->fetchrow_hashref();
+    } else {
-    $sth->finish();
+        # No assign_key provided — caller may be an unauthenticated UI, etc.
-
+        my $sth = database->prepare("SELECT id FROM tasks WHERE id=?");
-    unless(ref $ref) {
+        $sth->execute($task_id);
-        send_error("Task not assigned to this worker or not in progress", 403);
+        unless ($sth->fetchrow_hashref()) {
+            send_error("Task not found", 404);
+        }
+        $sth->finish();
     }
 
     # Update the task as completed (store results as JSON text for MariaDB)
-    my $results_json = defined $results ? encode_json($results) : 'null';
+    my $results_json = defined $results ? JSON::encode_json($results) : 'null';
     my $update_sth = database->prepare("UPDATE tasks SET status='COMPLETED', results=?, updated_at=NOW() WHERE id=?");
-    $update_sth->execute($results_json, $task);
+    $update_sth->execute($results_json, $task_id);
     if($update_sth->rows == 0) {
         send_error("Failed to complete task", 500);
     }
@@ -183,4 +221,29 @@ post '/api/v1/task' => sub {
     return { id => $task_id };
 };
 
-start();
+post '/api/v1/task/:task/unassign' => sub {
+    my $task_id = route_parameters->get("task");
+
+    my $update_sth = database->prepare(
+        "UPDATE tasks SET status='PENDING', assign_key=NULL, assigned_at=NULL, updated_at=NOW() WHERE id=?"
+    );
+    $update_sth->execute($task_id);
+
+    if ($update_sth->rows == 0) {
+        send_error("Task not found or already in PENDING state", 404);
+    }
+
+
+    return { message => 'Task unassigned' };
+};
+
+start();
+
+
+sub max {
+    return (sort { $b <=> $a } @_)[0];
+}
+
+sub min {
+    return (sort { $a <=> $b } @_)[0];
+}

api/config.yml

@@ -18,7 +18,7 @@ plugins:
         dbi_params:
             RaiseError: 1
             AutoCommit: 1
-        on_connect_do: ["SET NAMES 'utf8'", "SET CHARACTER SET 'utf8'" ]
+        on_connect_do: ["SET NAMES 'utf8mb4'", "SET CHARACTER SET 'utf8mb4'" ]
         log_queries: 1
 
 server:

docker-compose.yml

@@ -7,7 +7,7 @@ services:
       MYSQL_ROOT_PASSWORD: ${DB_ROOT_PASSWORD:-rootpass}
       MYSQL_DATABASE: ${DB_NAME:-videodetect}
       MYSQL_USER: ${DB_USER:-videodetect}
-      MYSQL_PASSWORD: ${DB_PASSWORD:-changeme_videodetect}
+      MYSQL_PASSWORD: ${DB_PASSWORD:-videodetect}
     ports:
       - "3306:3306"
     volumes:
@@ -29,20 +29,14 @@ services:
     build:
       context: ./ui
       dockerfile: Dockerfile
-    container_name: videodetect-ui
     restart: unless-stopped
     ports:
       - "5000:5000"
     environment:
-      - DB_HOST=${DB_HOST:-mariadb}
+      - API_BASE=http://10.0.1.34:3000/api/v1
-      - DB_PORT=${DB_PORT:-3306}
-      - DB_NAME=${DB_NAME:-videodetect}
-      - DB_USER=${DB_USER:-videodetect}
-      - DB_PASSWORD=${DB_PASSWORD:-changeme_videodetect}
     volumes:
       - ./ui:/app
-      - nas_input:/data/input:ro
+      - nas_input:/data:ro
-      - ${NAS_OUTPUT_PATH:-/mnt/nas/output}:/data/output
     networks:
       - videodetect-network
     depends_on:
@@ -66,7 +60,7 @@ services:
       - DB_PORT=${DB_PORT:-3306}
       - DB_NAME=${DB_NAME:-videodetect}
       - DB_USER=${DB_USER:-videodetect}
-      - DB_PASSWORD=${DB_PASSWORD:-changeme_videodetect}
+      - DB_PASSWORD=${DB_PASSWORD:-videodetect}
     volumes:
       - ./api:/app
     networks:

loadmodel.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+curl http://10.0.1.7:11434/api/generate -d '{
+  "model": "qwen3.6:35b-a3b",
+  "keep_alive": "60m"
+}'

scanner/.env

@@ -8,7 +8,7 @@ DB_ROOT_PASSWORD=videodetect
 DB_PASSWORD=videodetect
 DB_USER=videodetect
 DB_NAME=videodetect
-DB_HOST=10.0.1.7
+DB_HOST=10.0.1.34
 
-API_HOST=https://10.0.1.7:3000
+API_HOST=https://10.0.1.34:3000
 

scanner/scanner.pl

@@ -18,7 +18,7 @@ my $do_delete = (defined $ENV{'DO_DELETE'}) ? $ENV{'DO_DELETE'} : 1;
 $SIG{INT} = sub { die "Interrupted\n"; };
 
 my $dbh = DBI->connect(
-    "DBI:mysql:database=$db_name;host=$db_host;mysql_enable_utf8=1",
+    "DBI:mysql:database=$db_name;host=$db_host;mysql_enable_utf8mb4=1",
     $db_user,
     $db_pass,
     { mysql_auto_reconnect => 1 }

src/active_learning/__init__.py

@@ -1 +0,0 @@
-"""Active learning pipeline: label ingestion, training, validation, and deployment."""

src/active_learning/label_ingestor.py

@@ -1,217 +0,0 @@
-"""
-Label ingestion for active learning.
-
-Queries the review_queue for annotated labels, extracts face crops,
-and builds a versioned training dataset with stratified train/val split.
-"""
-
-import csv
-import json
-import logging
-import random
-import shutil
-from pathlib import Path
-from typing import Dict, List, Optional, Tuple
-
-logger = logging.getLogger(__name__)
-
-# Train split fraction (val = 1 - TRAIN_FRAC)
-_TRAIN_FRAC = 0.80
-
-
-class LabelIngestor:
-    """Ingest annotated review data and build a versioned dataset."""
-
-    def __init__(self, db_connector, config):
-        self._db = db_connector
-        self._cfg = config
-        self._training_path = Path(config.get("storage.training_path", "/data/training"))
-
-    # ------------------------------------------------------------------
-    # Public API
-    # ------------------------------------------------------------------
-
-    def count_annotated(self) -> int:
-        """Return number of annotated rows ready for training."""
-        rows = self._db.fetchall(
-            "SELECT COUNT(*) AS cnt FROM review_queue "
-            "WHERE annotated = TRUE AND ground_truth IS NOT NULL"
-        )
-        return int((rows or [{"cnt": 0}])[0]["cnt"])
-
-    def ingest(self, version: str, seed: int = 42) -> Optional[str]:
-        """
-        Build a versioned dataset directory from the review queue.
-
-        Returns the dataset path on success, or None if no data is available.
-        """
-        rows = self._fetch_annotated_rows()
-        if not rows:
-            logger.warning("No annotated samples found; skipping dataset build")
-            return None
-
-        dataset_path = self._training_path / version
-        crops_pos = dataset_path / "crops" / "class_1"
-        crops_neg = dataset_path / "crops" / "class_0"
-        for d in (crops_pos, crops_neg):
-            d.mkdir(parents=True, exist_ok=True)
-
-        records = self._extract_crops(rows, crops_pos, crops_neg)
-        if not records:
-            logger.error("No crops could be extracted from annotated rows")
-            return None
-
-        train_records, val_records = _stratified_split(records, _TRAIN_FRAC, seed)
-
-        self._write_labels_csv(dataset_path / "labels.csv", records)
-        self._write_metadata(dataset_path / "metadata.json", version, records, train_records, val_records)
-
-        logger.info(
-            "Dataset v%s built: %d total (%d train / %d val) at %s",
-            version, len(records), len(train_records), len(val_records), dataset_path,
-        )
-        return str(dataset_path)
-
-    # ------------------------------------------------------------------
-    # Internal helpers
-    # ------------------------------------------------------------------
-
-    def _fetch_annotated_rows(self) -> List[Dict]:
-        rows = self._db.fetchall(
-            """SELECT rq.video_id, rq.ground_truth,
-                      pl.confidence_scores,
-                      v.file_path
-               FROM review_queue rq
-               JOIN videos v ON v.id = rq.video_id
-               LEFT JOIN (
-                   SELECT video_id, confidence_scores,
-                          ROW_NUMBER() OVER (PARTITION BY video_id ORDER BY processed_at DESC) AS rn
-                   FROM processing_logs
-               ) pl ON pl.video_id = rq.video_id AND pl.rn = 1
-               WHERE rq.annotated = TRUE AND rq.ground_truth IS NOT NULL"""
-        )
-        return rows or []
-
-    def _extract_crops(
-        self,
-        rows: List[Dict],
-        crops_pos: Path,
-        crops_neg: Path,
-    ) -> List[Dict]:
-        """Copy or re-extract face crops into the dataset directory."""
-        records: List[Dict] = []
-        scratch_path = Path(self._cfg.get("storage.scratch_path", "/scratch"))
-
-        for row in rows:
-            video_id = row["video_id"]
-            label = int(bool(row["ground_truth"]))
-            dest_dir = crops_pos if label == 1 else crops_neg
-
-            try:
-                contributing = _parse_json_field(row.get("confidence_scores"))
-                crop_paths = self._resolve_crop_paths(video_id, contributing, scratch_path)
-
-                for crop_path in crop_paths:
-                    src = Path(crop_path)
-                    if not src.exists():
-                        logger.debug("Crop not found, skipping: %s", src)
-                        continue
-                    dest = dest_dir / f"video{video_id}_{src.name}"
-                    shutil.copy2(src, dest)
-                    records.append({"crop_path": str(dest), "label": label, "video_id": video_id})
-
-            except Exception as exc:
-                logger.warning("Failed to extract crops for video %s: %s", video_id, exc)
-
-        return records
-
-    def _resolve_crop_paths(
-        self,
-        video_id: int,
-        contributing_frames: List,
-        scratch_path: Path,
-    ) -> List[str]:
-        """Return paths of existing crop files for this video."""
-        paths: List[str] = []
-
-        # contributing_frames may be a list of frame scores or frame dicts
-        if contributing_frames:
-            for item in contributing_frames:
-                if isinstance(item, dict) and "crop_path" in item:
-                    paths.append(item["crop_path"])
-                elif isinstance(item, str):
-                    paths.append(item)
-
-        # Fall back: glob any crop files already written to scratch
-        if not paths:
-            pattern = f"*video{video_id}*.jpg"
-            paths = [str(p) for p in scratch_path.rglob(pattern)]
-
-        return paths
-
-    @staticmethod
-    def _write_labels_csv(csv_path: Path, records: List[Dict]):
-        with open(csv_path, "w", newline="", encoding="utf-8") as f:
-            writer = csv.DictWriter(f, fieldnames=["crop_path", "label", "video_id"])
-            writer.writeheader()
-            writer.writerows(records)
-
-    @staticmethod
-    def _write_metadata(
-        meta_path: Path,
-        version: str,
-        all_records: List[Dict],
-        train_records: List[Dict],
-        val_records: List[Dict],
-    ):
-        pos = sum(1 for r in all_records if r["label"] == 1)
-        neg = len(all_records) - pos
-        meta = {
-            "version": version,
-            "total_samples": len(all_records),
-            "train_samples": len(train_records),
-            "val_samples": len(val_records),
-            "class_counts": {"class_0": neg, "class_1": pos},
-        }
-        meta_path.write_text(json.dumps(meta, indent=2), encoding="utf-8")
-
-
-# ------------------------------------------------------------------
-# Module-level helpers
-# ------------------------------------------------------------------
-
-def _stratified_split(
-    records: List[Dict],
-    train_frac: float,
-    seed: int,
-) -> Tuple[List[Dict], List[Dict]]:
-    """Return (train, val) with stratification by label."""
-    rng = random.Random(seed)
-
-    by_label: Dict[int, List[Dict]] = {}
-    for r in records:
-        by_label.setdefault(r["label"], []).append(r)
-
-    train, val = [], []
-    for label_records in by_label.values():
-        shuffled = list(label_records)
-        rng.shuffle(shuffled)
-        split = max(1, int(len(shuffled) * train_frac))
-        train.extend(shuffled[:split])
-        val.extend(shuffled[split:])
-
-    rng.shuffle(train)
-    rng.shuffle(val)
-    return train, val
-
-
-def _parse_json_field(value) -> List:
-    if not value:
-        return []
-    if isinstance(value, list):
-        return value
-    try:
-        parsed = json.loads(value)
-        return parsed if isinstance(parsed, list) else []
-    except (json.JSONDecodeError, TypeError):
-        return []

src/active_learning/pipeline.py

@@ -1,82 +0,0 @@
-"""
-Active learning pipeline orchestrator.
-
-Entry point that coordinates:
-  1. Check annotated sample count against minimum threshold
-  2. Ingest labels and build versioned dataset
-  3. Fine-tune classification head
-  4. Validate candidate model against quality gates
-  5. Deploy if gates pass; skip otherwise
-"""
-
-import logging
-from typing import Optional
-
-from .label_ingestor import LabelIngestor
-from .registry import ModelRegistry
-from .trainer import Trainer
-from .validator import Validator
-
-logger = logging.getLogger(__name__)
-
-
-class ActiveLearningPipeline:
-    """Orchestrate the full active learning cycle."""
-
-    def __init__(self, db_connector, config):
-        self._db = db_connector
-        self._cfg = config
-        self._ingestor = LabelIngestor(db_connector, config)
-        self._registry = ModelRegistry(db_connector, config)
-
-    def run(self, version: str) -> bool:
-        """
-        Execute a full active learning cycle for the given model version.
-
-        Returns True if a new model was deployed, False otherwise.
-        """
-        al = self._cfg.get_section("active_learning")
-        min_samples: int = int(al.get("min_annotated_samples", 100))
-
-        # 1. Check threshold
-        n_annotated = self._ingestor.count_annotated()
-        logger.info("Annotated samples available: %d (minimum: %d)", n_annotated, min_samples)
-        if n_annotated < min_samples:
-            logger.info("Insufficient annotated samples; skipping active learning cycle")
-            return False
-
-        # 2. Ingest labels
-        seed = int(self._cfg.get("active_learning.seed", 42))
-        dataset_path = self._ingestor.ingest(version, seed=seed)
-        if not dataset_path:
-            logger.error("Label ingestion produced no dataset; aborting")
-            return False
-
-        # 3. Train
-        trainer = Trainer(self._cfg)
-        checkpoint_path = trainer.train(dataset_path, version)
-        if not checkpoint_path:
-            logger.error("Training failed; aborting active learning cycle")
-            return False
-
-        # 4. Validate
-        current_f1 = self._registry.get_active_f1()
-        validator = Validator(self._cfg, current_f1=current_f1)
-        metrics = validator.validate(checkpoint_path, dataset_path)
-
-        self._registry.register_candidate(
-            version, checkpoint_path,
-            f1=metrics.get("f1", 0.0),
-            ece=metrics.get("ece", 1.0),
-        )
-
-        if not metrics.get("gates_passed", False):
-            logger.warning(
-                "Quality gates failed for %s; skipping deployment. Details: %s",
-                version, metrics.get("gate_details"),
-            )
-            return False
-
-        # 5. Deploy
-        deployed = self._registry.deploy(version, checkpoint_path)
-        return deployed

src/active_learning/registry.py

@@ -1,223 +0,0 @@
-"""
-Model registry and deployment for active learning.
-
-Handles:
-- Promoting a candidate model to ACTIVE in the DB
-- Converting the PyTorch checkpoint to ONNX then TensorRT
-- Hot-reloading the classifier in worker processes via SIGUSER1
-- Rollback to the previous ACTIVE model on failure
-"""
-
-import logging
-import os
-import signal
-import subprocess
-from pathlib import Path
-from typing import Optional
-
-logger = logging.getLogger(__name__)
-
-# Signal used to notify the worker process to reload its model
-_RELOAD_SIGNAL = signal.SIGUSR1
-
-
-class ModelRegistry:
-    """Manage model lifecycle: promote, deploy, rollback."""
-
-    def __init__(self, db_connector, config):
-        self._db = db_connector
-        self._cfg = config
-        self._models_path = Path(config.get("storage.models_path", "/models"))
-        al = config.get_section("active_learning")
-        dep = al.get("deployment", {})
-        self._auto_deploy: bool = bool(dep.get("auto_deploy", True))
-        self._hot_reload: bool = bool(dep.get("hot_reload", True))
-        self._rollback_enabled: bool = bool(dep.get("rollback_enabled", True))
-
-    # ------------------------------------------------------------------
-    # Public API
-    # ------------------------------------------------------------------
-
-    def get_active_version(self) -> Optional[str]:
-        """Return the version string of the currently ACTIVE model."""
-        rows = self._db.fetchall(
-            "SELECT version FROM models WHERE status = 'ACTIVE' ORDER BY deployed_at DESC LIMIT 1"
-        )
-        if rows:
-            return rows[0]["version"]
-        return None
-
-    def get_active_f1(self) -> float:
-        """Return the F1 score of the currently ACTIVE model (0 if unknown)."""
-        rows = self._db.fetchall(
-            "SELECT f1_score FROM models WHERE status = 'ACTIVE' ORDER BY deployed_at DESC LIMIT 1"
-        )
-        if rows and rows[0]["f1_score"] is not None:
-            return float(rows[0]["f1_score"])
-        return 0.0
-
-    def register_candidate(self, version: str, checkpoint_path: str, f1: float, ece: float):
-        """Insert or update the candidate model record."""
-        self._db.execute(
-            """INSERT INTO models (version, status, path, f1_score, ece_score, created_at)
-               VALUES (%s, 'CANDIDATE', %s, %s, %s, NOW())
-               ON DUPLICATE KEY UPDATE
-                   status = 'CANDIDATE', path = VALUES(path),
-                   f1_score = VALUES(f1_score), ece_score = VALUES(ece_score)""",
-            (version, checkpoint_path, f1, ece),
-        )
-        logger.info("Registered candidate model %s (f1=%.4f, ece=%.4f)", version, f1, ece)
-
-    def deploy(self, version: str, checkpoint_path: str) -> bool:
-        """
-        Convert, promote and hot-reload the candidate model.
-
-        Returns True if deployment succeeded, False otherwise.
-        """
-        if not self._auto_deploy:
-            logger.info("Auto-deploy disabled; skipping deployment of %s", version)
-            return False
-
-        try:
-            engine_path = self._build_engine(version, checkpoint_path)
-            self._promote(version, engine_path)
-            if self._hot_reload:
-                self._reload_worker()
-            logger.info("Model %s deployed successfully", version)
-            return True
-        except Exception as exc:
-            logger.error("Deployment of %s failed: %s", version, exc, exc_info=True)
-            if self._rollback_enabled:
-                self.rollback(version)
-            return False
-
-    def rollback(self, failed_version: str):
-        """Restore the most recent ARCHIVED model to ACTIVE."""
-        rows = self._db.fetchall(
-            """SELECT version FROM models
-               WHERE status = 'ARCHIVED'
-               ORDER BY deployed_at DESC
-               LIMIT 1"""
-        )
-        if not rows:
-            logger.error("No archived model available for rollback")
-            return
-
-        prev_version = rows[0]["version"]
-        self._db.execute(
-            "UPDATE models SET status = 'ARCHIVED' WHERE version = %s",
-            (failed_version,),
-        )
-        self._db.execute(
-            "UPDATE models SET status = 'ACTIVE' WHERE version = %s",
-            (prev_version,),
-        )
-        logger.warning("Rolled back to model %s (failed: %s)", prev_version, failed_version)
-        if self._hot_reload:
-            self._reload_worker()
-
-    # ------------------------------------------------------------------
-    # Internal helpers
-    # ------------------------------------------------------------------
-
-    def _build_engine(self, version: str, checkpoint_path: str) -> str:
-        """Export checkpoint to ONNX then build a TensorRT FP32 engine."""
-        candidate_dir = self._models_path / "candidate"
-        onnx_path = candidate_dir / f"{version}.onnx"
-        engine_path = candidate_dir / f"{version}.trt"
-
-        self._export_onnx(checkpoint_path, onnx_path)
-        self._build_trt(onnx_path, engine_path)
-        return str(engine_path)
-
-    @staticmethod
-    def _export_onnx(checkpoint_path: str, onnx_path: Path):
-        """Convert PyTorch checkpoint to ONNX."""
-        try:
-            import torch
-            import torch.nn as nn
-            import torchvision.models as models
-
-            device = torch.device("cpu")
-            model = models.mobilenet_v3_small(weights=None)
-            model.classifier = nn.Sequential(
-                nn.Linear(576, 256),
-                nn.ReLU(),
-                nn.Dropout(0.3),
-                nn.Linear(256, 2),
-            )
-            state = torch.load(checkpoint_path, map_location=device)
-            model.load_state_dict(state)
-            model.eval()
-
-            dummy = torch.zeros(1, 3, 224, 224)
-            torch.onnx.export(
-                model,
-                dummy,
-                str(onnx_path),
-                input_names=["input"],
-                output_names=["output"],
-                dynamic_axes={"input": {0: "batch_size"}, "output": {0: "batch_size"}},
-                opset_version=11,
-            )
-            logger.info("Exported ONNX model to %s", onnx_path)
-        except ImportError as exc:
-            logger.error("PyTorch/torchvision not available for ONNX export: %s", exc)
-            raise
-
-    @staticmethod
-    def _build_trt(onnx_path: Path, engine_path: Path):
-        """Build TensorRT FP32 engine via trtexec CLI."""
-        cmd = [
-            "trtexec",
-            f"--onnx={onnx_path}",
-            f"--saveEngine={engine_path}",
-            "--fp32",
-            "--maxBatch=32",
-            "--workspace=2048",
-        ]
-        logger.info("Building TensorRT engine: %s", " ".join(cmd))
-        result = subprocess.run(cmd, capture_output=True, text=True, timeout=600)
-        if result.returncode != 0:
-            raise RuntimeError(
-                f"trtexec failed (rc={result.returncode}): {result.stderr[:500]}"
-            )
-        logger.info("TensorRT engine saved to %s", engine_path)
-
-    def _promote(self, version: str, engine_path: str):
-        """Atomically promote candidate to ACTIVE, archive current ACTIVE."""
-        self._db.execute(
-            """UPDATE models
-               SET status = 'ARCHIVED'
-               WHERE status = 'ACTIVE'""",
-        )
-        self._db.execute(
-            """UPDATE models
-               SET status = 'ACTIVE', path = %s, deployed_at = NOW()
-               WHERE version = %s""",
-            (engine_path, version),
-        )
-        logger.info("Promoted model %s to ACTIVE (engine=%s)", version, engine_path)
-
-    @staticmethod
-    def _reload_worker():
-        """Send SIGUSR1 to the worker process to trigger a model hot-reload."""
-        pid_file = Path("/tmp/videodetect_worker.pid")
-        if pid_file.exists():
-            try:
-                pid = int(pid_file.read_text().strip())
-                os.kill(pid, _RELOAD_SIGNAL)
-                logger.info("Sent SIGUSR1 to worker PID %d for hot-reload", pid)
-            except (ValueError, ProcessLookupError, PermissionError) as exc:
-                logger.warning("Could not signal worker process: %s", exc)
-        else:
-            # Fallback: restart via docker-compose
-            logger.warning("No PID file found; attempting docker-compose restart")
-            try:
-                subprocess.run(
-                    ["docker-compose", "restart", "worker"],
-                    capture_output=True,
-                    timeout=60,
-                )
-            except Exception as exc:
-                logger.error("docker-compose restart failed: %s", exc)

src/active_learning/trainer.py

@@ -1,344 +0,0 @@
-"""
-Training pipeline for active learning head-only fine-tuning.
-
-Loads a pre-trained MobileNetV3 backbone (frozen), replaces the classification
-head, and fine-tunes on versioned crop datasets using AdamW + early stopping.
-All training is FP32 for Tesla P40 compatibility (CC 5.2, no Tensor Cores).
-"""
-
-import logging
-import os
-import random
-from pathlib import Path
-from typing import Dict, Optional, Tuple
-
-import numpy as np
-
-logger = logging.getLogger(__name__)
-
-
-class Trainer:
-    """Head-only fine-tuning pipeline for MobileNetV3 classifier."""
-
-    def __init__(self, config):
-        self._cfg = config
-        self._models_path = Path(config.get("storage.models_path", "/models"))
-        self._candidate_path = self._models_path / "candidate"
-        self._candidate_path.mkdir(parents=True, exist_ok=True)
-
-        al = config.get_section("active_learning")
-        tr = al.get("training", {})
-        self._epochs: int = int(tr.get("epochs", 20))
-        self._batch_size: int = int(tr.get("batch_size", 32))
-        self._lr: float = float(tr.get("learning_rate", 1e-3))
-        self._weight_decay: float = float(tr.get("weight_decay", 1e-2))
-        self._patience: int = int(tr.get("early_stopping_patience", 5))
-        self._lr_factor: float = float(tr.get("lr_factor", 0.5))
-        self._lr_patience: int = int(tr.get("lr_patience", 3))
-
-        aug = al.get("augmentation", {})
-        self._aug_flip: bool = bool(aug.get("horizontal_flip", True))
-        self._aug_jitter: bool = bool(aug.get("color_jitter", True))
-        self._aug_affine: bool = bool(aug.get("affine", True))
-        self._aug_degrees: int = int(aug.get("affine_degrees", 10))
-        self._aug_scale: float = float(aug.get("affine_scale", 0.1))
-
-        seed = int(config.get("active_learning.seed", 42))
-        self._seed = seed
-
-    # ------------------------------------------------------------------
-    # Public API
-    # ------------------------------------------------------------------
-
-    def train(self, dataset_path: str, version: str) -> Optional[str]:
-        """
-        Fine-tune the classification head on the versioned dataset.
-
-        Returns the path to the best checkpoint or None on failure.
-        """
-        try:
-            import torch
-            import torch.nn as nn
-            from torch.utils.data import DataLoader
-
-            self._seed_everything(self._seed)
-            self._assert_cuda_compatibility(torch)
-
-            train_loader, val_loader = self._build_dataloaders(dataset_path, torch)
-            model = self._build_model(nn)
-            best_path = self._run_training(model, train_loader, val_loader, version, torch, nn)
-            return best_path
-        except ImportError as exc:
-            logger.error("PyTorch not available: %s", exc)
-            return None
-        except Exception as exc:
-            logger.error("Training failed: %s", exc, exc_info=True)
-            return None
-
-    # ------------------------------------------------------------------
-    # Model construction
-    # ------------------------------------------------------------------
-
-    def _build_model(self, nn):
-        """Load MobileNetV3-Small backbone, freeze it, attach trainable head."""
-        import torchvision.models as models
-
-        model = models.mobilenet_v3_small(weights=models.MobileNet_V3_Small_Weights.IMAGENET1K_V1)
-
-        # Freeze backbone
-        for param in model.features.parameters():
-            param.requires_grad = False
-
-        # Replace classification head
-        model.classifier = nn.Sequential(
-            nn.Linear(576, 256),
-            nn.ReLU(),
-            nn.Dropout(0.3),
-            nn.Linear(256, 2),
-        )
-        return model
-
-    # ------------------------------------------------------------------
-    # Data loading
-    # ------------------------------------------------------------------
-
-    def _build_dataloaders(self, dataset_path: str, torch) -> Tuple:
-        from torch.utils.data import DataLoader
-        import torchvision.transforms as T
-
-        train_transform = self._build_train_transform(T)
-        val_transform = self._build_val_transform(T)
-
-        train_dataset = _CropDataset(
-            Path(dataset_path) / "crops", split="train",
-            transform=train_transform, seed=self._seed,
-        )
-        val_dataset = _CropDataset(
-            Path(dataset_path) / "crops", split="val",
-            transform=val_transform, seed=self._seed,
-        )
-
-        g = torch.Generator()
-        g.manual_seed(self._seed)
-
-        train_loader = DataLoader(
-            train_dataset,
-            batch_size=self._batch_size,
-            shuffle=True,
-            num_workers=2,
-            pin_memory=True,
-            generator=g,
-        )
-        val_loader = DataLoader(
-            val_dataset,
-            batch_size=self._batch_size,
-            shuffle=False,
-            num_workers=2,
-            pin_memory=True,
-        )
-        logger.info(
-            "Dataset: %d train / %d val samples",
-            len(train_dataset), len(val_dataset),
-        )
-        return train_loader, val_loader
-
-    def _build_train_transform(self, T):
-        ops = [T.Resize((224, 224))]
-        if self._aug_flip:
-            ops.append(T.RandomHorizontalFlip())
-        if self._aug_jitter:
-            ops.append(T.ColorJitter(brightness=0.2, contrast=0.2, saturation=0.2, hue=0.1))
-        if self._aug_affine:
-            ops.append(T.RandomAffine(
-                degrees=self._aug_degrees,
-                scale=(1.0 - self._aug_scale, 1.0 + self._aug_scale),
-            ))
-        ops += [T.ToTensor(), T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])]
-        return T.Compose(ops)
-
-    def _build_val_transform(self, T):
-        return T.Compose([
-            T.Resize((224, 224)),
-            T.ToTensor(),
-            T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
-        ])
-
-    # ------------------------------------------------------------------
-    # Training loop
-    # ------------------------------------------------------------------
-
-    def _run_training(self, model, train_loader, val_loader, version: str, torch, nn) -> Optional[str]:
-        device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-        model = model.to(device)
-        logger.info("Training on device: %s", device)
-
-        class_weights = self._compute_class_weights(train_loader, torch, device)
-        criterion = nn.CrossEntropyLoss(weight=class_weights)
-
-        optimizer = torch.optim.AdamW(
-            filter(lambda p: p.requires_grad, model.parameters()),
-            lr=self._lr,
-            weight_decay=self._weight_decay,
-            betas=(0.9, 0.999),
-        )
-        scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(
-            optimizer, mode="max", factor=self._lr_factor, patience=self._lr_patience,
-        )
-
-        best_f1 = -1.0
-        best_path: Optional[str] = None
-        no_improve = 0
-
-        for epoch in range(1, self._epochs + 1):
-            train_loss = self._train_epoch(model, train_loader, criterion, optimizer, device, torch)
-            val_f1 = self._val_epoch(model, val_loader, device, torch)
-            scheduler.step(val_f1)
-
-            ckpt_path = self._candidate_path / f"{version}_epoch_{epoch:02d}.pt"
-            torch.save(model.state_dict(), ckpt_path)
-            logger.info(
-                "Epoch %d/%d  train_loss=%.4f  val_f1=%.4f",
-                epoch, self._epochs, train_loss, val_f1,
-            )
-
-            if val_f1 > best_f1:
-                best_f1 = val_f1
-                best_path = str(self._candidate_path / f"{version}_best.pt")
-                torch.save(model.state_dict(), best_path)
-                no_improve = 0
-            else:
-                no_improve += 1
-                if no_improve >= self._patience:
-                    logger.info("Early stopping at epoch %d (patience=%d)", epoch, self._patience)
-                    break
-
-        logger.info("Training complete. Best val_f1=%.4f  checkpoint=%s", best_f1, best_path)
-        return best_path
-
-    @staticmethod
-    def _train_epoch(model, loader, criterion, optimizer, device, torch) -> float:
-        model.train()
-        total_loss = 0.0
-        for images, labels in loader:
-            images, labels = images.to(device), labels.to(device)
-            optimizer.zero_grad()
-            outputs = model(images)
-            loss = criterion(outputs, labels)
-            loss.backward()
-            optimizer.step()
-            total_loss += loss.item() * len(images)
-        return total_loss / max(len(loader.dataset), 1)
-
-    @staticmethod
-    def _val_epoch(model, loader, device, torch) -> float:
-        from sklearn.metrics import f1_score
-
-        model.eval()
-        all_preds, all_labels = [], []
-        with torch.no_grad():
-            for images, labels in loader:
-                images = images.to(device)
-                outputs = model(images)
-                preds = outputs.argmax(dim=1).cpu().numpy()
-                all_preds.extend(preds)
-                all_labels.extend(labels.numpy())
-
-        return float(f1_score(all_labels, all_preds, average="macro", zero_division=0))
-
-    @staticmethod
-    def _compute_class_weights(train_loader, torch, device):
-        """Compute inverse-frequency class weights to handle imbalance."""
-        counts = np.zeros(2, dtype=np.int64)
-        for _, labels in train_loader:
-            for lbl in labels.numpy():
-                counts[int(lbl)] += 1
-        total = counts.sum()
-        if total == 0 or counts.min() == 0:
-            return None
-        weights = total / (2.0 * counts.astype(np.float32))
-        return torch.tensor(weights, dtype=torch.float32, device=device)
-
-    # ------------------------------------------------------------------
-    # Misc
-    # ------------------------------------------------------------------
-
-    @staticmethod
-    def _assert_cuda_compatibility(torch):
-        if torch.cuda.is_available():
-            cuda_ver = torch.version.cuda or ""
-            torch_ver = torch.__version__
-            logger.info("CUDA version: %s  PyTorch: %s", cuda_ver, torch_ver)
-            major = int(cuda_ver.split(".")[0]) if cuda_ver else 0
-            if major > 11:
-                logger.warning(
-                    "CUDA %s detected; system requires CUDA ≤ 11.8 for Tesla P40", cuda_ver
-                )
-
-    @staticmethod
-    def _seed_everything(seed: int):
-        random.seed(seed)
-        np.random.seed(seed)
-        try:
-            import torch
-            torch.manual_seed(seed)
-            if torch.cuda.is_available():
-                torch.cuda.manual_seed_all(seed)
-                torch.backends.cudnn.deterministic = True
-                torch.backends.cudnn.benchmark = False
-        except ImportError:
-            pass
-
-
-# ------------------------------------------------------------------
-# Dataset helper
-# ------------------------------------------------------------------
-
-class _CropDataset:
-    """Reads face crop images from class_0/ and class_1/ subdirectories."""
-
-    _EXTENSIONS = {".jpg", ".jpeg", ".png"}
-
-    def __init__(self, crops_root: Path, split: str, transform, seed: int):
-        all_samples = self._discover(crops_root)
-        train_samples, val_samples = _split_samples(all_samples, 0.80, seed)
-        self._samples = train_samples if split == "train" else val_samples
-        self._transform = transform
-
-    def __len__(self) -> int:
-        return len(self._samples)
-
-    def __getitem__(self, idx: int):
-        from PIL import Image
-        path, label = self._samples[idx]
-        image = Image.open(path).convert("RGB")
-        if self._transform:
-            image = self._transform(image)
-        return image, label
-
-    def _discover(self, crops_root: Path):
-        samples = []
-        for label, subdir in ((0, "class_0"), (1, "class_1")):
-            d = crops_root / subdir
-            if d.is_dir():
-                for p in sorted(d.iterdir()):
-                    if p.suffix.lower() in self._EXTENSIONS:
-                        samples.append((p, label))
-        return samples
-
-
-def _split_samples(samples, train_frac: float, seed: int):
-    """Stratified split mirroring LabelIngestor logic."""
-    rng = random.Random(seed)
-    by_label: Dict[int, list] = {}
-    for path, label in samples:
-        by_label.setdefault(label, []).append((path, label))
-
-    train, val = [], []
-    for group in by_label.values():
-        shuffled = list(group)
-        rng.shuffle(shuffled)
-        split = max(1, int(len(shuffled) * train_frac))
-        train.extend(shuffled[:split])
-        val.extend(shuffled[split:])
-
-    return train, val

src/active_learning/validator.py

@@ -1,204 +0,0 @@
-"""
-Candidate model validation for active learning.
-
-Evaluates a candidate checkpoint on the held-out validation set,
-computes F1, ECE, accuracy, precision, and recall, then checks
-quality gates before promotion.
-"""
-
-import logging
-from pathlib import Path
-from typing import Dict, Optional, Tuple
-
-import numpy as np
-
-logger = logging.getLogger(__name__)
-
-
-class Validator:
-    """Evaluate a candidate model and enforce quality gates."""
-
-    def __init__(self, config, current_f1: float = 0.0):
-        al = config.get_section("active_learning")
-        val_cfg = al.get("validation", {})
-        self._min_f1_delta: float = float(val_cfg.get("min_f1_improvement", 0.02))
-        self._max_ece: float = float(val_cfg.get("max_ece", 0.08))
-        self._current_f1 = current_f1
-
-    # ------------------------------------------------------------------
-    # Public API
-    # ------------------------------------------------------------------
-
-    def validate(self, checkpoint_path: str, dataset_path: str) -> Dict:
-        """
-        Run validation and return a results dict including gate pass/fail.
-
-        Keys: f1, ece, accuracy, precision, recall, gates_passed, gate_details
-        """
-        try:
-            import torch
-            probs, labels = self._run_inference(checkpoint_path, dataset_path, torch)
-            return self._compute_metrics(probs, labels)
-        except ImportError as exc:
-            logger.error("PyTorch not available: %s", exc)
-            return self._empty_result()
-        except Exception as exc:
-            logger.error("Validation failed: %s", exc, exc_info=True)
-            return self._empty_result()
-
-    # ------------------------------------------------------------------
-    # Inference
-    # ------------------------------------------------------------------
-
-    def _run_inference(self, checkpoint_path: str, dataset_path: str, torch) -> Tuple[np.ndarray, np.ndarray]:
-        import torch.nn as nn
-        import torchvision.models as models
-        import torchvision.transforms as T
-        from torch.utils.data import DataLoader
-
-        device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-
-        model = self._load_checkpoint(checkpoint_path, nn, models, torch, device)
-        model.eval()
-
-        transform = T.Compose([
-            T.Resize((224, 224)),
-            T.ToTensor(),
-            T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
-        ])
-
-        from .trainer import _CropDataset, _split_samples
-        crops_root = Path(dataset_path) / "crops"
-        all_samples = _CropDataset._discover(None, crops_root)  # type: ignore[arg-type]
-        _, val_samples = _split_samples(all_samples, 0.80, seed=42)
-
-        if not val_samples:
-            raise ValueError("Validation set is empty")
-
-        val_dataset = _ValDataset(val_samples, transform)
-        loader = DataLoader(val_dataset, batch_size=32, shuffle=False, num_workers=2, pin_memory=True)
-
-        all_probs, all_labels = [], []
-        with torch.no_grad():
-            for images, batch_labels in loader:
-                images = images.to(device)
-                outputs = model(images)
-                probs_batch = torch.softmax(outputs, dim=1)[:, 1].cpu().numpy()
-                all_probs.extend(probs_batch)
-                all_labels.extend(batch_labels.numpy())
-
-        return np.array(all_probs, dtype=np.float32), np.array(all_labels, dtype=np.int32)
-
-    @staticmethod
-    def _load_checkpoint(checkpoint_path: str, nn, models, torch, device):
-        model = models.mobilenet_v3_small(weights=None)
-        model.classifier = nn.Sequential(
-            nn.Linear(576, 256),
-            nn.ReLU(),
-            nn.Dropout(0.3),
-            nn.Linear(256, 2),
-        )
-        state = torch.load(checkpoint_path, map_location=device)
-        model.load_state_dict(state)
-        return model.to(device)
-
-    # ------------------------------------------------------------------
-    # Metrics
-    # ------------------------------------------------------------------
-
-    def _compute_metrics(self, probs: np.ndarray, labels: np.ndarray) -> Dict:
-        from sklearn.metrics import (
-            accuracy_score, f1_score, precision_score, recall_score,
-        )
-
-        preds = (probs >= 0.5).astype(np.int32)
-        f1 = float(f1_score(labels, preds, average="macro", zero_division=0))
-        accuracy = float(accuracy_score(labels, preds))
-        precision = float(precision_score(labels, preds, average="macro", zero_division=0))
-        recall = float(recall_score(labels, preds, average="macro", zero_division=0))
-        ece = compute_ece(probs, labels)
-
-        delta_f1 = f1 - self._current_f1
-        gate_f1 = delta_f1 > self._min_f1_delta
-        gate_ece = ece < self._max_ece
-        gates_passed = gate_f1 and gate_ece
-
-        gate_details = {
-            "delta_f1": round(delta_f1, 4),
-            "min_f1_improvement": self._min_f1_delta,
-            "gate_f1_passed": gate_f1,
-            "ece": round(ece, 4),
-            "max_ece": self._max_ece,
-            "gate_ece_passed": gate_ece,
-        }
-
-        logger.info(
-            "Validation results: f1=%.4f delta_f1=%.4f ece=%.4f gates_passed=%s",
-            f1, delta_f1, ece, gates_passed,
-        )
-
-        return {
-            "f1": round(f1, 4),
-            "ece": round(ece, 4),
-            "accuracy": round(accuracy, 4),
-            "precision": round(precision, 4),
-            "recall": round(recall, 4),
-            "gates_passed": gates_passed,
-            "gate_details": gate_details,
-        }
-
-    def _empty_result(self) -> Dict:
-        return {
-            "f1": 0.0, "ece": 1.0, "accuracy": 0.0,
-            "precision": 0.0, "recall": 0.0,
-            "gates_passed": False,
-            "gate_details": {},
-        }
-
-
-# ------------------------------------------------------------------
-# ECE calculation (module-level for reuse in tests)
-# ------------------------------------------------------------------
-
-def compute_ece(predictions: np.ndarray, labels: np.ndarray, n_bins: int = 15) -> float:
-    """
-    Expected Calibration Error.
-
-    Bins predictions by confidence and measures average |confidence - accuracy|
-    weighted by bin population.
-    """
-    bin_boundaries = np.linspace(0, 1, n_bins + 1)
-    ece = 0.0
-    n = len(predictions)
-    if n == 0:
-        return 0.0
-
-    for i in range(n_bins):
-        mask = (predictions >= bin_boundaries[i]) & (predictions < bin_boundaries[i + 1])
-        if mask.sum() > 0:
-            bin_confidence = float(predictions[mask].mean())
-            bin_accuracy = float(labels[mask].mean())
-            ece += (mask.sum() / n) * abs(bin_confidence - bin_accuracy)
-
-    return float(ece)
-
-
-# ------------------------------------------------------------------
-# Minimal dataset wrapper for validation
-# ------------------------------------------------------------------
-
-class _ValDataset:
-    def __init__(self, samples, transform):
-        self._samples = samples
-        self._transform = transform
-
-    def __len__(self) -> int:
-        return len(self._samples)
-
-    def __getitem__(self, idx: int):
-        from PIL import Image
-        path, label = self._samples[idx]
-        image = Image.open(path).convert("RGB")
-        if self._transform:
-            image = self._transform(image)
-        return image, label

src/aggregator.py

@@ -1,39 +0,0 @@
-"""Confidence aggregation strategies for video-level scoring."""
-
-import logging
-from typing import List
-
-import numpy as np
-
-logger = logging.getLogger(__name__)
-
-
-def aggregate(
-    confidences: List[float],
-    strategy: str = "max",
-    alpha: float = 1.0,
-    beta: float = 0.1,
-    top_k: int = 3,
-) -> float:
-    """Aggregate per-crop confidences into a single video-level score C ∈ [0,1]."""
-    if not confidences:
-        return 0.0
-
-    arr = np.array(confidences, dtype=np.float64)
-
-    if strategy == "max":
-        return float(arr.max())
-
-    if strategy == "weighted_mean":
-        mean = float(arr.mean())
-        var  = float(arr.var())
-        raw  = alpha * mean + beta * var
-        # Clamp to [0,1]; the formula is a linear combination, not a softmax
-        return float(np.clip(raw, 0.0, 1.0))
-
-    if strategy == "top_k_mean":
-        k = max(1, min(top_k, len(arr)))
-        return float(np.partition(arr, -k)[-k:].mean())
-
-    logger.warning("Unknown aggregation strategy '%s', falling back to max", strategy)
-    return float(arr.max())

src/api_client.py

@@ -1,136 +0,0 @@
-"""HTTP client for VideoDetect's Perl REST API (api/app.pl).
-
-Wraps the three worker-facing endpoints:
-    GET /api/v1/nexttask/:type      — claim next pending task
-    GET /api/v1/video/:id           — fetch video metadata
-    POST /api/v1/task/:task/complete — submit results
-
-Uses the ``requests`` library; raises :class:`ApiError` on unexpected HTTP status codes.
-"""
-
-from __future__ import annotations
-
-import json
-import logging
-from dataclasses import dataclass, field
-from typing import Any, Optional
-
-import requests
-
-logger = logging.getLogger(__name__)
-
-
-# ---------------------------------------------------------------------------
-# Exception
-# ---------------------------------------------------------------------------
-
-class ApiError(Exception):
-    """Raised when the API returns an unexpected error status."""
-
-    def __init__(self, status_code: int, message: str):
-        self.status_code = status_code
-        self.message = message
-        super().__init__(f"API error {status_code}: {message}")
-
-
-# ---------------------------------------------------------------------------
-# Client
-# ---------------------------------------------------------------------------
-
-class ApiClient:
-    """Thin HTTP client for the Dancer2 REST API."""
-
-    def __init__(self, base_url: str = "http://localhost:3000"):
-        self.base_url = base_url.rstrip("/")
-        self.session = requests.Session()
-        logger.info("API client configured: base_url=%s", self.base_url)
-
-    # -- helpers -------------------------------------------------------------
-
-    def _get(self, path: str, **kwargs: Any) -> dict:
-        url = f"{self.base_url}{path}"
-        resp = self.session.get(url, **kwargs)
-        if resp.status_code == 404:
-            logger.debug("GET %s → 404", url)
-            return {}  # caller distinguishes "not found" from real data
-        resp.raise_for_status()
-        return resp.json()
-
-    def _post(self, path: str, json_body: dict[str, Any]) -> dict:
-        """POST a JSON body (Content-Type: application/json)."""
-        url = f"{self.base_url}{path}"
-        logger.debug("POST %s → %s", url, json.dumps(json_body))
-        resp = self.session.post(url, json=json_body)
-        resp.raise_for_status()
-        return resp.json()
-
-    # -- public API ----------------------------------------------------------
-
-    def get_next_task(self, task_type: str) -> Optional[dict[str, Any]]:
-        """Claim the next pending task.
-
-        Returns ``{"task": {...}, "assign_key": "worker_NNN"}`` on success,
-        or ``None`` when no PENDING tasks remain (HTTP 404).
-        """
-        path = f"/api/v1/nexttask/{task_type}"
-        result = self._get(path)
-        if not result:
-            return None
-        assert "task" in result and "assign_key" in result, \
-            f"Unexpected response shape: {result}"
-        return result
-
-    def get_video(self, video_id: int) -> dict[str, Any]:
-        """Fetch full video metadata by integer ID.
-
-        Raises :class:`ApiError` if the video is not found (404).
-        """
-        path = f"/api/v1/video/{video_id}"
-        result = self._get(path)
-        if not result:
-            raise ApiError(404, f"Video {video_id} not found")
-        assert "id" in result, f"Unexpected video response shape: {result}"
-        return result
-
-    def submit_results(
-        self,
-        task_id: int,
-        assign_key: str,
-        results: dict[str, Any],
-    ) -> dict[str, Any]:
-        """Submit processing results for a claimed task.
-
-        Args:
-            task_id: The database ID returned by ``get_next_task``.
-            assign_key: The worker token returned by ``get_next_task``.
-            results: A JSON-serializable dict (status, confidence, routing_decision, etc.).
-
-        Returns the server response dict on success.
-        Raises :class:`ApiError` on 4xx/5xx.
-        """
-        path = f"/api/v1/task/{task_id}/complete"
-        return self._post(path, {
-            "assign_key": assign_key,
-            "results": results,
-        })
-
-    def create_task(self, task_type: str, video_id: int) -> dict[str, Any]:
-        """Create a new pending task.
-
-        Args:
-            task_type: Task type string (e.g. 'AISCAN', 'REVIEW').
-            video_id: The video to associate the task with.
-
-        Returns the server response dict on success.
-        Raises :class:`ApiError` on 4xx/5xx.
-        """
-        path = "/api/v1/tasks"
-        return self._post(path, {
-            "task_type": task_type,
-            "video_id": video_id,
-            "status": "PENDING",
-        })
-
-    def close(self) -> None:
-        """Close the underlying HTTP session."""
-        self.session.close()

src/classifier.py

@@ -1,138 +0,0 @@
-"""
-Face crop classifier.
-
-Loads a MobileNetV3 model via ONNX/TensorRT FP32, applies temperature-scaled
-softmax, and returns per-crop probabilities for the target class.
-"""
-
-import logging
-from pathlib import Path
-from typing import Any, List, Optional
-
-import numpy as np
-
-logger = logging.getLogger(__name__)
-
-# ImageNet normalisation constants
-_MEAN = np.array([0.485, 0.456, 0.406], dtype=np.float32)
-_STD  = np.array([0.229, 0.224, 0.225], dtype=np.float32)
-
-
-def calibrated_softmax(logits: np.ndarray, temperature: float = 1.0) -> np.ndarray:
-    """Softmax with temperature scaling; returns class probabilities."""
-    scaled = logits / max(temperature, 1e-8)
-    shifted = scaled - scaled.max(axis=-1, keepdims=True)   # numerical stability
-    exp = np.exp(shifted)
-    return exp / exp.sum(axis=-1, keepdims=True)
-
-
-class FaceClassifier:
-    """Classify face crops and return calibrated target-class probabilities."""
-
-    def __init__(
-        self,
-        engine_path: str,
-        temperature: float = 1.0,
-        input_size: int = 224,
-        device: str = "cuda",
-    ):
-        self.engine_path = engine_path
-        self.temperature = temperature
-        self.input_size = input_size
-        self.device = device
-        self._session: Optional[Any] = None
-        self._load_model()
-
-    def _load_model(self):
-        path = Path(self.engine_path)
-        if not path.exists():
-            logger.warning("Classifier engine not found at %s; using placeholder", self.engine_path)
-            return
-
-        suffix = path.suffix.lower()
-        if suffix == ".onnx":
-            try:
-                import onnxruntime as ort
-                providers = (["CUDAExecutionProvider"] if self.device.startswith("cuda")
-                             else ["CPUExecutionProvider"])
-                self._session = ort.InferenceSession(str(path), providers=providers)
-                logger.info("Loaded ONNX classifier from %s", self.engine_path)
-            except Exception as exc:
-                logger.warning("Failed to load ONNX classifier: %s", exc)
-        elif suffix in (".trt", ".engine", ".plan"):
-            try:
-                import tensorrt as trt
-                with trt.Logger() as trt_logger, open(path, "rb") as f:
-                    runtime = trt.Runtime(trt_logger)
-                    self._session = runtime.deserialize_cuda_engine(f.read())
-                logger.info("Loaded TensorRT classifier from %s", self.engine_path)
-            except Exception as exc:
-                logger.warning("Failed to load TensorRT classifier: %s", exc)
-        else:
-            logger.warning("Unsupported classifier format: %s", suffix)
-
-    def classify(self, crop_paths: List[str], batch_size: int = 16) -> List[float]:
-        """Return target-class probabilities (p ∈ [0,1]) for each crop path."""
-        results: List[float] = []
-        for i in range(0, len(crop_paths), batch_size):
-            batch = crop_paths[i : i + batch_size]
-            results.extend(self._classify_batch(batch))
-        return results
-
-    def _classify_batch(self, crop_paths: List[str]) -> List[float]:
-        preprocessed = []
-        for path in crop_paths:
-            try:
-                preprocessed.append(self._preprocess(path))
-            except Exception as exc:
-                logger.warning("Preprocessing failed for %s: %s", path, exc)
-                preprocessed.append(np.zeros((3, self.input_size, self.input_size), dtype=np.float32))
-
-        batch = np.stack(preprocessed, axis=0)  # (N, 3, H, W)
-        logits = self._infer(batch)             # (N, 2)
-        probs = calibrated_softmax(logits, self.temperature)
-        return probs[:, 1].tolist()             # target-class column
-
-    def _preprocess(self, crop_path: str) -> np.ndarray:
-        from PIL import Image
-        image = Image.open(crop_path).convert("RGB")
-        if image.size != (self.input_size, self.input_size):
-            image = image.resize((self.input_size, self.input_size), Image.Resampling.BILINEAR)
-        arr = np.array(image, dtype=np.float32) / 255.0
-        arr = (arr - _MEAN) / _STD
-        image.close()
-        return np.transpose(arr, (2, 0, 1))    # HWC → CHW
-
-    def _infer(self, batch: np.ndarray) -> np.ndarray:
-        if self._session is None:
-            return self._placeholder_logits(batch.shape[0])
-
-        try:
-            if hasattr(self._session, "run"):
-                input_name = self._session.get_inputs()[0].name
-                output = self._session.run(None, {input_name: batch})
-                return np.array(output[0])
-
-            # TensorRT path
-            import pycuda.autoinit  # noqa: F401
-            import pycuda.driver as cuda
-
-            context = self._session.create_execution_context()
-            out_shape = (batch.shape[0], 2)
-            d_in  = cuda.mem_alloc(batch.nbytes)
-            d_out = cuda.mem_alloc(np.prod(out_shape) * np.dtype(np.float32).itemsize)
-            stream = cuda.Stream()
-            cuda.memcpy_htod_async(d_in, batch, stream)
-            context.execute_async_v2(bindings=[int(d_in), int(d_out)], stream_handle=stream.handle)
-            output = np.empty(out_shape, dtype=np.float32)
-            cuda.memcpy_dtoh_async(output, d_out, stream)
-            stream.synchronize()
-            return output
-        except Exception as exc:
-            logger.warning("Classifier inference failed: %s", exc)
-            return self._placeholder_logits(batch.shape[0])
-
-    @staticmethod
-    def _placeholder_logits(n: int) -> np.ndarray:
-        """Return neutral logits when no model is loaded."""
-        return np.zeros((n, 2), dtype=np.float32)

src/codec_validator.py

@@ -1,107 +0,0 @@
-"""
-Codec Validator
-
-Validates video codecs against a whitelist/blacklist.
-Flags unsupported codecs as UNSCANNABLE.
-"""
-
-import logging
-from typing import Set
-
-logger = logging.getLogger(__name__)
-
-# Default supported codecs
-DEFAULT_WHITELIST: Set[str] = {
-    "avc1",       # H.264
-    "hevc",       # H.265
-    "vp8",        # VP8
-    "vp9",        # VP9
-    "av01",       # AV1
-    "mjpeg",      # MJPEG
-    "mp4v",       # MPEG-4
-    "h264",       # H.264 (alternative name)
-    "h265",       # H.265 (alternative name)
-}
-
-# Known unsupported codecs
-DEFAULT_BLACKLIST: Set[str] = {
-    "theora",     # Theora
-    "divx",       # DivX
-    "xvid",       # Xvid
-    "prores",     # ProRes (requires special handling)
-    "avc",        # Old AVC naming
-    "hev1",       # HEVC alternative
-}
-
-
-class CodecValidator:
-    """Validate video codecs against whitelist/blacklist."""
-
-    def __init__(
-        self,
-        whitelist: Set[str] = None,
-        blacklist: Set[str] = None,
-        default_status_on_error: str = "UNSCANNABLE",
-    ):
-        self.whitelist = whitelist or DEFAULT_WHITELIST
-        self.blacklist = blacklist or DEFAULT_BLACKLIST
-        self.default_status_on_error = default_status_on_error
-
-    def is_supported(self, codec: str) -> bool:
-        """Check if a codec is supported."""
-        codec_lower = codec.lower().strip()
-
-        # Check blacklist first
-        if codec_lower in self.blacklist:
-            logger.info("Codec '%s' is blacklisted", codec)
-            return False
-
-        # Check whitelist
-        if codec_lower in self.whitelist:
-            return True
-
-        # Not in either list - assume unsupported
-        logger.warning("Codec '%s' not in whitelist or blacklist", codec)
-        return False
-
-    def validate(self, codec: str) -> tuple:
-        """
-        Validate a codec and return (is_supported, reason).
-
-        Returns:
-            (True, "supported") if codec is in whitelist
-            (False, "blacklisted") if codec is in blacklist
-            (False, "not_in_whitelist") if codec is unknown
-        """
-        codec_lower = codec.lower().strip()
-
-        if codec_lower in self.blacklist:
-            return False, "blacklisted"
-
-        if codec_lower in self.whitelist:
-            return True, "supported"
-
-        return False, "not_in_whitelist"
-
-    def add_to_whitelist(self, codec: str):
-        """Add a codec to the whitelist."""
-        self.whitelist.add(codec.lower().strip())
-        logger.info("Added codec '%s' to whitelist", codec)
-
-    def add_to_blacklist(self, codec: str):
-        """Add a codec to the blacklist."""
-        self.blacklist.add(codec.lower().strip())
-        logger.info("Added codec '%s' to blacklist", codec)
-
-    def get_status(self, codec: str) -> str:
-        """Get the status for a codec (for DB update)."""
-        is_supported, reason = self.validate(codec)
-        if is_supported:
-            return "PENDING"
-        return self.default_status_on_error
-
-    def __repr__(self):
-        return (
-            f"CodecValidator(whitelist={len(self.whitelist)}, "
-            f"blacklist={len(self.blacklist)})"
-        )

src/config_loader.py

@@ -1,126 +0,0 @@
-"""
-Configuration loader for VideoDetect.
-
-Loads config.yaml with environment variable overrides.
-Provides typed accessors and validates all required fields.
-"""
-
-import logging
-import os
-from pathlib import Path
-from typing import Any, Dict, Optional
-
-import yaml
-
-logger = logging.getLogger(__name__)
-
-# Default config path
-DEFAULT_CONFIG_PATH = Path(__file__).parent.parent / "config.yaml"
-
-
-class Config:
-    """Typed configuration manager with environment variable overrides."""
-
-    def __init__(self, config_path: Optional[str] = None):
-        self._path = Path(config_path) if config_path else DEFAULT_CONFIG_PATH
-        self._data: Dict[str, Any] = {}
-        self._load()
-
-    def _load(self):
-        """Load config from YAML file."""
-        if not self._path.exists():
-            raise FileNotFoundError(f"Config file not found: {self._path}")
-
-        with open(self._path, "r") as f:
-            self._data = yaml.safe_load(f) or {}
-
-        # Apply environment variable overrides
-        self._apply_env_overrides()
-        logger.info("Config loaded from %s", self._path)
-
-    def _apply_env_overrides(self):
-        """Override config values with environment variables."""
-        overrides = {
-            "DB_HOST": ("database.host", None),
-            "DB_PORT": ("database.port", int),
-            "DB_NAME": ("database.name", None),
-            "DB_USER": ("database.user", None),
-            "DB_PASSWORD": ("database.password", None),
-            "DB_POOL_SIZE": ("database.pool_size", int),
-            "DB_POOL_MIN": ("database.pool_min", int),
-            "GPU_MAX_MEMORY_GB": ("gpu.max_memory_gb", float),
-            "SAMPLING_INTERVAL_SECONDS": ("sampling.interval_seconds", int),
-            "T_HIGH": ("thresholds.T_high", float),
-            "T_LOW": ("thresholds.T_low", float),
-            "CONFIG_PATH": (None, None),  # handled separately
-        }
-
-        for env_key, (config_path, type_fn) in overrides.items():
-            env_val = os.environ.get(env_key)
-            if env_val is not None:
-                if config_path is None:
-                    continue
-                if type_fn is not None:
-                    env_val = type_fn(env_val)
-                self._set_nested(self._data, config_path, env_val)
-                logger.debug("Config override: %s=%s (from %s)", config_path, env_val, env_key)
-
-    @staticmethod
-    def _set_nested(data: Dict, path: str, value):
-        """Set a value in a nested dict using dot notation."""
-        keys = path.split(".")
-        d = data
-        for key in keys[:-1]:
-            d = d.setdefault(key, {})
-        d[keys[-1]] = value
-
-    def get(self, path: str, default=None):
-        """Get a config value using dot notation."""
-        keys = path.split(".")
-        d = self._data
-        for key in keys:
-            if isinstance(d, dict):
-                d = d.get(key, default)
-            else:
-                return default
-        return d if d is not None else default
-
-    def get_section(self, section: str) -> Dict:
-        """Get an entire config section as a dict."""
-        return self._data.get(section, {})
-
-    def validate(self, required_keys: list) -> list:
-        """Validate that required config keys exist. Returns list of missing keys."""
-        missing = []
-        for key in required_keys:
-            if self.get(key) is None:
-                missing.append(key)
-        if missing:
-            logger.error("Missing required config keys: %s", missing)
-        return missing
-
-    @property
-    def data(self) -> Dict[str, Any]:
-        """Access raw config data."""
-        return self._data
-
-    def __repr__(self):
-        return f"Config(path={self._path}, sections={list(self._data.keys())})"
-
-
-# Module-level singleton
-_config: Optional[Config] = None
-
-
-def get_config(config_path: Optional[str] = None) -> Config:
-    """Get or create the global config singleton."""
-    global _config
-    if _config is None:
-        _config = Config(config_path)
-    return _config
-
-
-def reset_config():
-    """Reset the config singleton (useful for testing)."""
-    global _config
-    _config = None

src/crash_recovery.py

@@ -1,137 +0,0 @@
-"""
-Crash recovery and idempotent processing guarantees.
-
-On startup: re-queues any video stuck in PROCESSING past the lock timeout.
-During processing: saves per-video checkpoint JSON to scratch for resume.
-"""
-
-import json
-import logging
-from datetime import datetime, timezone
-from pathlib import Path
-from typing import Dict, List, Optional
-
-logger = logging.getLogger(__name__)
-
-_CHECKPOINT_DIR = "checkpoints"
-
-
-class CrashRecovery:
-    """Handle crash recovery, checkpointing, and idempotent re-queueing."""
-
-    def __init__(self, db_connector, config):
-        self._db = db_connector
-        scratch = config.get("storage.scratch_path", "/scratch")
-        self._checkpoint_dir = Path(scratch) / _CHECKPOINT_DIR
-        mon = config.get_section("monitoring")
-        cr = mon.get("crash_recovery", {})
-        self._lock_timeout_minutes: int = int(cr.get("lock_timeout_minutes", 5))
-        self._auto_requeue: bool = bool(cr.get("auto_requeue", True))
-
-    # ------------------------------------------------------------------
-    # Startup recovery
-    # ------------------------------------------------------------------
-
-    def recover_on_startup(self) -> int:
-        """
-        Re-queue videos stuck in PROCESSING past the lock timeout.
-
-        Returns the count of videos re-queued.
-        """
-        if not self._auto_requeue:
-            logger.info("auto_requeue disabled; skipping crash recovery")
-            return 0
-
-        try:
-            result = self._db.execute(
-                """UPDATE videos
-                   SET status = 'PENDING', updated_at = NOW()
-                   WHERE status = 'PROCESSING'
-                     AND updated_at < NOW() - INTERVAL %s MINUTE""",
-                (self._lock_timeout_minutes,),
-            )
-            count = result if isinstance(result, int) else 0
-            if count:
-                logger.warning("Crash recovery: re-queued %d stuck PROCESSING videos", count)
-            else:
-                logger.info("Crash recovery: no stuck videos found")
-            return count
-        except Exception as exc:
-            logger.error("Crash recovery query failed: %s", exc)
-            return 0
-
-    def list_stuck_videos(self) -> List[Dict]:
-        """Return videos currently stuck past the lock timeout (read-only)."""
-        try:
-            rows = self._db.fetchall(
-                """SELECT id, file_path, updated_at
-                   FROM videos
-                   WHERE status = 'PROCESSING'
-                     AND updated_at < NOW() - INTERVAL %s MINUTE""",
-                (self._lock_timeout_minutes,),
-            )
-            return rows or []
-        except Exception as exc:
-            logger.error("Failed to list stuck videos: %s", exc)
-            return []
-
-    # ------------------------------------------------------------------
-    # Per-video checkpointing
-    # ------------------------------------------------------------------
-
-    def save_checkpoint(self, video_id: int, state: str, progress: Dict) -> None:
-        """Persist a checkpoint JSON for the given video."""
-        self._checkpoint_dir.mkdir(parents=True, exist_ok=True)
-        checkpoint = {
-            "video_id": video_id,
-            "state": state,
-            "progress": progress,
-            "timestamp": datetime.now(timezone.utc).isoformat(),
-        }
-        path = self._checkpoint_dir / f"{video_id}.json"
-        try:
-            path.write_text(json.dumps(checkpoint, indent=2), encoding="utf-8")
-            logger.debug("Saved checkpoint for video %d (state=%s)", video_id, state)
-        except Exception as exc:
-            logger.warning("Failed to save checkpoint for video %d: %s", video_id, exc)
-
-    def load_checkpoint(self, video_id: int) -> Optional[Dict]:
-        """Return the stored checkpoint for video_id, or None if absent."""
-        path = self._checkpoint_dir / f"{video_id}.json"
-        if not path.exists():
-            return None
-        try:
-            return json.loads(path.read_text(encoding="utf-8"))
-        except Exception as exc:
-            logger.warning("Failed to read checkpoint for video %d: %s", video_id, exc)
-            return None
-
-    def delete_checkpoint(self, video_id: int) -> None:
-        """Remove the checkpoint file after successful processing."""
-        path = self._checkpoint_dir / f"{video_id}.json"
-        if path.exists():
-            try:
-                path.unlink()
-                logger.debug("Deleted checkpoint for video %d", video_id)
-            except Exception as exc:
-                logger.warning("Failed to delete checkpoint for video %d: %s", video_id, exc)
-
-    # ------------------------------------------------------------------
-    # Idempotency guard
-    # ------------------------------------------------------------------
-
-    def is_already_completed(self, video_id: int) -> bool:
-        """
-        Return True if this video already has a COMPLETED status.
-
-        Prevents duplicate processing if a job is accidentally re-submitted.
-        """
-        try:
-            rows = self._db.fetchall(
-                "SELECT status FROM videos WHERE id = %s",
-                (video_id,),
-            )
-            return bool(rows and rows[0].get("status") == "COMPLETED")
-        except Exception as exc:
-            logger.warning("Idempotency check failed for video %d: %s", video_id, exc)
-            return False

src/db_connector.py

@@ -1,227 +0,0 @@
-"""
-Database connection layer with connection pooling for VideoDetect.
-
-Provides:
-- Connection pooling via DBUtils + PyMySQL
-- Automatic reconnection on disconnect (ping + retry on transient errors)
-- Context manager support
-- Prepared statements for all queries
-- Transaction support for atomic state transitions
-"""
-
-import contextlib
-import logging
-import time
-from typing import Optional
-
-from dbutils.pooled_db import PooledDB
-import pymysql
-
-logger = logging.getLogger(__name__)
-
-
-class DBConnector:
-    """Thread-safe database connection pool manager."""
-
-    # Transient errors that indicate a dropped/stale connection and are safe
-    # to retry with a fresh connection from the pool.
-    _RETRYABLE_ERRORS = (pymysql.err.InterfaceError, pymysql.err.OperationalError)
-    _MAX_RETRIES = 3
-    _RETRY_BACKOFF_SECONDS = 0.5
-
-    def __init__(
-        self,
-        host: str = "mariadb",
-        port: int = 3306,
-        database: str = "videodetect",
-        user: str = "videodetect",
-        password: str = "videodetect123",
-        pool_size: int = 20,
-        pool_min: int = 5,
-        pool_recycle: int = 3600,
-    ):
-        # PooledDB parameters
-        pool_config = {
-            "creator": pymysql,
-            "maxconnections": pool_size,
-            "mincached": pool_min,
-            "maxcached": pool_size,
-            "maxusage": 200,
-            "blocking": True,
-            # ping(0) = check if connection is alive BEFORE returning it from
-            # the pool. This is the correct DBUtils mechanism for detecting
-            # dead/stale connections (idle timeout, network blip, DB restart).
-            "ping": 0,
-        }
-
-        # PyMySQL connection parameters
-        connection_params = {
-            "host": host,
-            "port": port,
-            "database": database,
-            "user": user,
-            "password": password,
-            "charset": "utf8mb4",
-            "cursorclass": pymysql.cursors.DictCursor,
-            "read_timeout": 30,
-            "write_timeout": 30,
-        }
-
-        self._pool = PooledDB(**pool_config, **connection_params)
-        self._pool_recycle = pool_recycle
-        logger.info(
-            "DB pool initialized: host=%s db=%s pool_size=%d min=%d ping=0",
-            host, database, pool_size, pool_min,
-        )
-
-    def get_connection(self):
-        """Get a connection from the pool."""
-        return self._pool.connection()
-
-    def _run_query(self, query: str, params, transaction: bool, fetch: str):
-        """Run a single query on a fresh connection, with retry on transient errors.
-
-        A pooled connection can be dropped by the server (idle timeout, network
-        blip, DB restart). When that happens the query fails with an
-        InterfaceError/OperationalError. We discard the dead connection and
-        retry with a fresh one from the pool.
-
-        Args:
-            query: SQL statement.
-            params: Bound parameters (or None).
-            transaction: If True, wrap the query in a transaction.
-            fetch: One of "none", "one", or "all" controlling the return value.
-
-        Returns:
-            - "none": the affected row count.
-            - "one": a single row (dict) or None.
-            - "all": a list of rows (dicts).
-        """
-        last_exc = None
-        for attempt in range(1, self._MAX_RETRIES + 1):
-            conn = self.get_connection()
-            try:
-                cursor = conn.cursor()
-                if transaction:
-                    conn.begin()
-                cursor.execute(query, params or ())
-                if fetch == "one":
-                    result = cursor.fetchone()
-                elif fetch == "all":
-                    result = cursor.fetchall()
-                else:
-                    result = cursor.rowcount
-                if transaction:
-                    conn.commit()
-                cursor.close()
-                conn.close()
-                return result
-            except self._RETRYABLE_ERRORS as e:
-                last_exc = e
-                logger.warning(
-                    "Transient DB error (attempt %d/%d): %s",
-                    attempt, self._MAX_RETRIES, e,
-                )
-                # Discard the dead connection; a fresh one is taken on retry.
-                self._safe_close(conn)
-                if attempt < self._MAX_RETRIES:
-                    time.sleep(self._RETRY_BACKOFF_SECONDS * attempt)
-            except Exception:
-                # Non-transient error: roll back if in a transaction and re-raise.
-                if transaction:
-                    self._safe_rollback(conn)
-                self._safe_close(conn)
-                raise
-        raise last_exc
-
-    @staticmethod
-    def _safe_close(conn):
-        try:
-            conn.close()
-        except Exception:
-            pass
-
-    @staticmethod
-    def _safe_rollback(conn):
-        try:
-            conn.rollback()
-        except Exception:
-            pass
-
-    @contextlib.contextmanager
-    def get_cursor(self, transaction: bool = False):
-        """Context manager for getting a cursor with optional transaction support.
-
-        Note: this does not retry on transient errors; use execute/fetchone/
-        fetchall for retry-safe single-statement queries.
-        """
-        conn = self.get_connection()
-        cursor = None
-        try:
-            cursor = conn.cursor()
-            if transaction:
-                conn.begin()
-            yield cursor
-            if transaction:
-                conn.commit()
-        except Exception:
-            if transaction:
-                self._safe_rollback(conn)
-            raise
-        finally:
-            if cursor is not None:
-                try:
-                    cursor.close()
-                except Exception:
-                    pass
-            self._safe_close(conn)
-
-    @contextlib.contextmanager
-    def transaction(self):
-        """Context manager for a full transaction."""
-        conn = self.get_connection()
-        try:
-            conn.begin()
-            yield conn
-            conn.commit()
-        except Exception:
-            self._safe_rollback(conn)
-            raise
-        finally:
-            self._safe_close(conn)
-
-    def execute(self, query: str, params=None, transaction: bool = False):
-        """Execute a query and return affected rows. Retries on transient errors."""
-        return self._run_query(query, params, transaction, fetch="none")
-
-    def fetchone(self, query: str, params=None):
-        """Execute a query and return one row. Retries on transient errors."""
-        return self._run_query(query, params, transaction=False, fetch="one")
-
-    def fetchall(self, query: str, params=None):
-        """Execute a query and return all rows. Retries on transient errors."""
-        return self._run_query(query, params, transaction=False, fetch="all")
-
-    def initialize_schema(self, schema_path: str = "db/schema.sql"):
-        """Initialize the database schema from SQL file."""
-        with open(schema_path, "r") as f:
-            sql = f.read()
-        # Split on semicolons and execute each statement
-        statements = [s.strip() for s in sql.split(";") if s.strip()]
-        for stmt in statements:
-            if stmt.startswith("--"):
-                continue
-            try:
-                self.execute(stmt)
-            except Exception as e:
-                logger.debug("Schema statement skipped (may already exist): %s", e)
-        logger.info("Schema initialized from %s", schema_path)
-
-    def health_check(self) -> bool:
-        """Check if the database is reachable."""
-        try:
-            result = self.fetchone("SELECT 1")
-            return result is not None
-        except Exception as e:
-            logger.error("Health check failed: %s", e)
-            return False

src/drift_detector.py

@@ -1,219 +0,0 @@
-"""
-Confidence distribution drift detection.
-
-Compares recent video confidence scores against a stored baseline and fires
-alerts when the distribution shifts beyond configured thresholds.
-"""
-
-import logging
-from datetime import datetime, timedelta, timezone
-from typing import Callable, Dict, List, Optional
-
-logger = logging.getLogger(__name__)
-
-
-class DriftDetector:
-    """Detect and alert on confidence distribution drift."""
-
-    def __init__(self, db_connector, config, alert_fn: Optional[Callable[[str], None]] = None):
-        self._db = db_connector
-        mon = config.get_section("monitoring")
-        alerts = mon.get("alerts", {})
-        self._drift_threshold: float = float(alerts.get("confidence_drift_threshold", 0.10))
-        self._review_max_size: int = int(alerts.get("review_queue_max_size", 1000))
-        self._review_max_age_h: int = int(alerts.get("review_queue_max_age_hours", 24))
-        self._throughput_min: float = float(alerts.get("throughput_min_videos_per_hour", 20))
-        self._throughput_window_h: int = int(alerts.get("throughput_min_duration_hours", 1))
-        self._error_rate_threshold: float = float(alerts.get("error_rate_threshold", 0.05))
-        self._error_rate_window_h: int = int(alerts.get("error_rate_window_hours", 1))
-        self._alert_fn = alert_fn or _log_alert
-
-    # ------------------------------------------------------------------
-    # Public API
-    # ------------------------------------------------------------------
-
-    def run_all_checks(self) -> Dict[str, bool]:
-        """
-        Run all alert checks and return a dict of {check_name: triggered}.
-
-        Fires the alert function for each triggered condition.
-        """
-        results = {}
-        results["confidence_drift"] = self.check_confidence_drift()
-        results["review_queue_growth"] = self.check_review_queue_growth()
-        results["low_throughput"] = self.check_low_throughput()
-        results["high_error_rate"] = self.check_error_rate()
-        return results
-
-    def check_confidence_drift(self) -> bool:
-        """
-        Compare p(C > 0.5) in recent processing logs to the stored baseline.
-
-        Returns True if drift exceeds the threshold.
-        """
-        current = self._fetch_recent_confidences(hours=24 * 7)
-        baseline = self._fetch_baseline_confidences()
-        if not current or not baseline:
-            logger.debug("Not enough data for drift check")
-            return False
-
-        triggered = detect_drift(current, baseline, self._drift_threshold)
-        if triggered:
-            current_high = _high_conf_fraction(current)
-            baseline_high = _high_conf_fraction(baseline)
-            shift = abs(current_high - baseline_high)
-            self._alert_fn(
-                f"Confidence drift detected: {shift:.1%} shift in p(C>0.5) "
-                f"(current={current_high:.1%}, baseline={baseline_high:.1%}, "
-                f"threshold={self._drift_threshold:.1%})"
-            )
-        return triggered
-
-    def check_review_queue_growth(self) -> bool:
-        """Alert if the unannotated review queue has been above max_size for max_age hours."""
-        try:
-            cutoff = datetime.now(timezone.utc) - timedelta(hours=self._review_max_age_h)
-            rows = self._db.fetchall(
-                """SELECT COUNT(*) AS cnt
-                   FROM review_queue
-                   WHERE annotated = FALSE
-                     AND created_at < %s""",
-                (cutoff.replace(tzinfo=None),),
-            )
-            count = int((rows or [{"cnt": 0}])[0]["cnt"])
-            if count > self._review_max_size:
-                self._alert_fn(
-                    f"Review queue growth alert: {count} unannotated items older than "
-                    f"{self._review_max_age_h}h (threshold={self._review_max_size})"
-                )
-                return True
-            return False
-        except Exception as exc:
-            logger.warning("Review queue growth check failed: %s", exc)
-            return False
-
-    def check_low_throughput(self) -> bool:
-        """Alert if throughput dropped below the minimum for the last window hours."""
-        try:
-            cutoff = datetime.now(timezone.utc) - timedelta(hours=self._throughput_window_h)
-            rows = self._db.fetchall(
-                """SELECT COUNT(*) AS cnt
-                   FROM videos
-                   WHERE status = 'COMPLETED'
-                     AND last_processed_time >= %s""",
-                (cutoff.replace(tzinfo=None),),
-            )
-            count = int((rows or [{"cnt": 0}])[0]["cnt"])
-            videos_per_hour = count / max(self._throughput_window_h, 1)
-            if videos_per_hour < self._throughput_min:
-                self._alert_fn(
-                    f"Low throughput alert: {videos_per_hour:.1f} videos/hour "
-                    f"over last {self._throughput_window_h}h "
-                    f"(minimum={self._throughput_min})"
-                )
-                return True
-            return False
-        except Exception as exc:
-            logger.warning("Throughput check failed: %s", exc)
-            return False
-
-    def check_error_rate(self) -> bool:
-        """Alert if the fraction of ERROR/UNSCANNABLE videos exceeds the threshold."""
-        try:
-            cutoff = datetime.now(timezone.utc) - timedelta(hours=self._error_rate_window_h)
-            rows = self._db.fetchall(
-                """SELECT status, COUNT(*) AS cnt
-                   FROM videos
-                   WHERE last_processed_time >= %s
-                     AND status IN ('COMPLETED', 'ERROR', 'UNSCANNABLE')
-                   GROUP BY status""",
-                (cutoff.replace(tzinfo=None),),
-            )
-            counts: Dict[str, int] = {r["status"]: int(r["cnt"]) for r in (rows or [])}
-            total = sum(counts.values())
-            if total == 0:
-                return False
-            errors = counts.get("ERROR", 0) + counts.get("UNSCANNABLE", 0)
-            rate = errors / total
-            if rate > self._error_rate_threshold:
-                self._alert_fn(
-                    f"High error rate alert: {rate:.1%} over last {self._error_rate_window_h}h "
-                    f"({errors}/{total} videos, threshold={self._error_rate_threshold:.1%})"
-                )
-                return True
-            return False
-        except Exception as exc:
-            logger.warning("Error rate check failed: %s", exc)
-            return False
-
-    # ------------------------------------------------------------------
-    # DB helpers
-    # ------------------------------------------------------------------
-
-    def _fetch_recent_confidences(self, hours: int = 168) -> List[float]:
-        """Return confidence scores from the last `hours` hours."""
-        try:
-            cutoff = datetime.now(timezone.utc) - timedelta(hours=hours)
-            rows = self._db.fetchall(
-                """SELECT confidence_score
-                   FROM processing_logs
-                   WHERE processed_at >= %s
-                     AND confidence_score IS NOT NULL""",
-                (cutoff.replace(tzinfo=None),),
-            )
-            return [float(r["confidence_score"]) for r in (rows or [])]
-        except Exception as exc:
-            logger.warning("Failed to fetch recent confidences: %s", exc)
-            return []
-
-    def _fetch_baseline_confidences(self) -> List[float]:
-        """Return the baseline confidence distribution stored in the DB."""
-        try:
-            rows = self._db.fetchall(
-                """SELECT confidence_score
-                   FROM processing_logs
-                   WHERE confidence_score IS NOT NULL
-                   ORDER BY processed_at ASC
-                   LIMIT 10000"""
-            )
-            return [float(r["confidence_score"]) for r in (rows or [])]
-        except Exception as exc:
-            logger.warning("Failed to fetch baseline confidences: %s", exc)
-            return []
-
-
-# ---------------------------------------------------------------------------
-# Module-level pure functions (testable without DB)
-# ---------------------------------------------------------------------------
-
-def detect_drift(
-    current_confidences: List[float],
-    baseline_confidences: List[float],
-    threshold: float = 0.10,
-) -> bool:
-    """
-    Return True if |p(C>0.5)_current - p(C>0.5)_baseline| > threshold.
-
-    Both lists must be non-empty.
-    """
-    if not current_confidences or not baseline_confidences:
-        return False
-    current_high = _high_conf_fraction(current_confidences)
-    baseline_high = _high_conf_fraction(baseline_confidences)
-    shift = abs(current_high - baseline_high)
-    if shift > threshold:
-        logger.warning(
-            "Drift detected: shift=%.2f%% (current=%.2f%% baseline=%.2f%%)",
-            shift * 100, current_high * 100, baseline_high * 100,
-        )
-        return True
-    return False
-
-
-def _high_conf_fraction(confidences: List[float]) -> float:
-    """Return the fraction of scores > 0.5."""
-    return sum(1 for c in confidences if c > 0.5) / len(confidences)
-
-
-def _log_alert(message: str):
-    logger.warning("ALERT: %s", message)

src/export_face_detector.py

@@ -1,104 +0,0 @@
-"""Export a YOLOv8n face-detection model to ONNX and build a TensorRT engine."""
-
-import argparse
-import json
-import logging
-from pathlib import Path
-
-logger = logging.getLogger(__name__)
-
-
-def export_onnx(output_dir: Path, input_size: int = 640) -> Path:
-    """Export YOLOv8n to ONNX with the required input shape."""
-    output_dir.mkdir(parents=True, exist_ok=True)
-    onnx_path = output_dir / "face_detector.onnx"
-    metadata_path = output_dir / "model.json"
-
-    try:
-        from ultralytics import YOLO
-
-        model = YOLO("yolov8n.pt")
-        model.export(
-            format="onnx",
-            imgsz=input_size,
-            half=False,
-            simplify=True,
-            dynamic=False,
-        )
-        exported = Path("yolov8n.onnx")
-        if exported.exists():
-            exported.rename(onnx_path)
-        logger.info("Exported ONNX model to %s", onnx_path)
-    except Exception as exc:
-        logger.error("Failed to export ONNX model: %s", exc)
-        raise
-
-    metadata = {
-        "input_shape": [1, 3, input_size, input_size],
-        "mean": [0.485, 0.456, 0.406],
-        "std": [0.229, 0.224, 0.225],
-        "confidence_threshold": 0.25,
-        "iou_threshold": 0.45,
-    }
-    metadata_path.write_text(json.dumps(metadata, indent=2))
-    return onnx_path
-
-
-def build_tensorrt_engine(onnx_path: Path, output_dir: Path, max_batch_size: int = 32) -> Path:
-    """Build and serialize a TensorRT FP32 engine from an ONNX file."""
-    engine_path = output_dir / "face_detector.trt"
-
-    try:
-        import tensorrt as trt
-
-        logger = trt.Logger(trt.Logger.WARNING)
-        builder = trt.Builder(logger)
-        network = builder.create_network(1 << int(trt.NetworkDefinitionCreationFlag.EXPLICIT_BATCH))
-        parser = trt.OnnxParser(network, logger)
-
-        onnx_data = onnx_path.read_bytes()
-        if not parser.parse(onnx_data):
-            for error in range(parser.num_errors):
-                logger.error(parser.get_error(error))
-            raise RuntimeError("ONNX parsing failed")
-
-        config = builder.create_builder_config()
-        config.max_workspace_size = 4 << 30  # 4GB
-        config.set_flag(trt.BuilderFlag.FP32)
-
-        profile = builder.create_optimization_profile()
-        input_name = network.get_input(0).name
-        profile.set_shape(
-            input_name,
-            (1, 3, 640, 640),
-            (max_batch_size // 2, 3, 640, 640),
-            (max_batch_size, 3, 640, 640),
-        )
-        config.add_optimization_profile(profile)
-
-        engine = builder.build_engine(network, config)
-        if engine is None:
-            raise RuntimeError("TensorRT engine build failed")
-
-        engine_path.write_bytes(engine.serialize())
-        logger.info("Serialized TensorRT engine to %s", engine_path)
-        return engine_path
-    except Exception as exc:
-        logger.error("Failed to build TensorRT engine: %s", exc)
-        raise
-
-
-def main():
-    logging.basicConfig(level=logging.INFO)
-    parser = argparse.ArgumentParser(description="Export YOLOv8n face detector to ONNX/TensorRT")
-    parser.add_argument("--output-dir", type=Path, default=Path("models/face_detector"))
-    parser.add_argument("--input-size", type=int, default=640)
-    parser.add_argument("--max-batch-size", type=int, default=32)
-    args = parser.parse_args()
-
-    onnx_path = export_onnx(args.output_dir, args.input_size)
-    build_tensorrt_engine(onnx_path, args.output_dir, args.max_batch_size)
-
-
-if __name__ == "__main__":
-    main()

src/face_detector.py

@@ -1,295 +0,0 @@
-"""
-Face detection runner.
-
-Wraps a YOLOv8n model exported to ONNX/TensorRT, runs batched inference on
-sampled frames, applies NMS, and produces 224×224 face crops for the classifier.
-"""
-
-import logging
-import time
-from pathlib import Path
-from typing import Any, Dict, List, Optional, Tuple
-
-import numpy as np
-
-logger = logging.getLogger(__name__)
-
-
-class Detection:
-    """A single face detection result."""
-
-    def __init__(
-        self,
-        frame_path: str,
-        x1: float,
-        y1: float,
-        x2: float,
-        y2: float,
-        confidence: float,
-        crop_path: Optional[str] = None,
-    ):
-        self.frame_path = frame_path
-        self.x1 = x1
-        self.y1 = y1
-        self.x2 = x2
-        self.y2 = y2
-        self.confidence = confidence
-        self.crop_path = crop_path
-
-    def to_dict(self) -> Dict[str, Any]:
-        return {
-            "frame_path": self.frame_path,
-            "x1": self.x1,
-            "y1": self.y1,
-            "x2": self.x2,
-            "y2": self.y2,
-            "confidence": self.confidence,
-            "crop_path": self.crop_path,
-        }
-
-
-class FaceDetector:
-    """Run batched face detection on video frames."""
-
-    def __init__(
-        self,
-        engine_path: str,
-        input_size: int = 640,
-        confidence_threshold: float = 0.25,
-        iou_threshold: float = 0.45,
-        max_faces_per_frame: int = 10,
-        max_faces_per_video: int = 100,
-        device: str = "cuda",
-    ):
-        self.engine_path = engine_path
-        self.input_size = input_size
-        self.confidence_threshold = confidence_threshold
-        self.iou_threshold = iou_threshold
-        self.max_faces_per_frame = max_faces_per_frame
-        self.max_faces_per_video = max_faces_per_video
-        self.device = device
-        self._session: Optional[Any] = None
-        self._load_model()
-
-    def _load_model(self):
-        """Load the inference backend."""
-        path = Path(self.engine_path)
-        if not path.exists():
-            logger.warning("Face detector engine not found at %s; using placeholder", self.engine_path)
-            return
-
-        suffix = path.suffix.lower()
-        if suffix == ".onnx":
-            try:
-                import onnxruntime as ort
-
-                providers = ["CUDAExecutionProvider"] if self.device.startswith("cuda") else ["CPUExecutionProvider"]
-                self._session = ort.InferenceSession(str(path), providers=providers)
-                logger.info("Loaded ONNX face detector from %s", self.engine_path)
-            except Exception as exc:
-                logger.warning("Failed to load ONNX face detector: %s", exc)
-        elif suffix in (".trt", ".engine", ".plan"):
-            try:
-                import tensorrt as trt
-
-                with trt.Logger() as trt_logger, open(path, "rb") as f:
-                    runtime = trt.Runtime(trt_logger)
-                    self._session = runtime.deserialize_cuda_engine(f.read())
-                logger.info("Loaded TensorRT face detector from %s", self.engine_path)
-            except Exception as exc:
-                logger.warning("Failed to load TensorRT face detector: %s", exc)
-        else:
-            logger.warning("Unsupported face detector format: %s", suffix)
-
-    def detect_faces(
-        self,
-        frame_paths: List[str],
-        batch_size: int = 16,
-    ) -> List[List[Detection]]:
-        """Detect faces in a list of frame image paths."""
-        all_results: List[List[Detection]] = []
-        for i in range(0, len(frame_paths), batch_size):
-            batch = frame_paths[i : i + batch_size]
-            batch_results = self._detect_batch(batch)
-            all_results.extend(batch_results)
-        return all_results
-
-    def _detect_batch(self, frame_paths: List[str]) -> List[List[Detection]]:
-        """Run detection on one batch and return detections per frame."""
-        preprocessed = []
-        for path in frame_paths:
-            try:
-                preprocessed.append(self._preprocess(path))
-            except Exception as exc:
-                logger.warning("Failed to preprocess %s: %s", path, exc)
-                preprocessed.append(np.zeros((3, self.input_size, self.input_size), dtype=np.float32))
-
-        batch_input = np.stack(preprocessed, axis=0)
-
-        outputs = self._infer(batch_input)
-
-        results = []
-        for idx, path in enumerate(frame_paths):
-            try:
-                detections = self._parse_outputs(outputs, idx, path)
-                detections = self._nms(detections)
-                detections = detections[: self.max_faces_per_frame]
-                results.append(detections)
-            except Exception as exc:
-                logger.warning("Failed to parse detections for %s: %s", path, exc)
-                results.append([])
-        return results
-
-    def _preprocess(self, frame_path: str) -> np.ndarray:
-        """Load and normalize a frame for the detector."""
-        from PIL import Image
-
-        image = Image.open(frame_path).convert("RGB")
-        image = image.resize((self.input_size, self.input_size), Image.Resampling.BILINEAR)
-        arr = np.array(image, dtype=np.float32) / 255.0
-        mean = np.array([0.485, 0.456, 0.406], dtype=np.float32)
-        std = np.array([0.229, 0.224, 0.225], dtype=np.float32)
-        arr = (arr - mean) / std
-        return np.transpose(arr, (2, 0, 1))  # HWC -> CHW
-
-    def _infer(self, batch_input: np.ndarray) -> Any:
-        """Run inference on the preprocessed batch."""
-        if self._session is None:
-            return self._placeholder_outputs(batch_input.shape[0])
-
-        try:
-            if hasattr(self._session, "run"):
-                input_name = self._session.get_inputs()[0].name
-                return self._session.run(None, {input_name: batch_input})
-
-            # TensorRT execution
-            import pycuda.driver as cuda
-            import pycuda.autoinit  # noqa: F401
-
-            context = self._session.create_execution_context()
-            output_shape = (batch_input.shape[0], 84, 8400)  # YOLOv8n default shape
-            d_input = cuda.mem_alloc(batch_input.nbytes)
-            d_output = cuda.mem_alloc(np.prod(output_shape) * np.dtype(np.float32).itemsize)
-            stream = cuda.Stream()
-            cuda.memcpy_htod_async(d_input, batch_input, stream)
-            context.execute_async_v2(bindings=[int(d_input), int(d_output)], stream_handle=stream.handle)
-            output = np.empty(output_shape, dtype=np.float32)
-            cuda.memcpy_dtoh_async(output, d_output, stream)
-            stream.synchronize()
-            return output
-        except Exception as exc:
-            logger.warning("Face detector inference failed: %s", exc)
-            return self._placeholder_outputs(batch_input.shape[0])
-
-    def _placeholder_outputs(self, batch_size: int) -> np.ndarray:
-        """Return an empty output tensor when no model is loaded."""
-        return np.zeros((batch_size, 84, 8400), dtype=np.float32)
-
-    def _parse_outputs(self, outputs: Any, batch_index: int, frame_path: str) -> List[Detection]:
-        """Parse raw inference outputs into Detection objects."""
-        if isinstance(outputs, list):
-            raw = outputs[0][batch_index]  # (84, 8400)
-        else:
-            raw = outputs[batch_index]
-
-        # YOLOv8 output layout: (cx, cy, w, h, cls scores...)
-        raw = raw.T  # (8400, 84)
-        scores = raw[:, 4:].max(axis=1)
-        mask = scores >= self.confidence_threshold
-        candidates = raw[mask]
-        scores = scores[mask]
-
-        detections = []
-        for row, score in zip(candidates, scores):
-            cx, cy, w, h = row[:4]
-            x1 = cx - w / 2
-            y1 = cy - h / 2
-            x2 = cx + w / 2
-            y2 = cy + h / 2
-            detections.append(
-                Detection(
-                    frame_path=frame_path,
-                    x1=float(x1),
-                    y1=float(y1),
-                    x2=float(x2),
-                    y2=float(y2),
-                    confidence=float(score),
-                )
-            )
-        return detections
-
-    def _nms(self, detections: List[Detection]) -> List[Detection]:
-        """Apply greedy Non-Maximum Suppression."""
-        if not detections:
-            return []
-
-        sorted_dets = sorted(detections, key=lambda d: d.confidence, reverse=True)
-        kept: List[Detection] = []
-
-        while sorted_dets:
-            current = sorted_dets.pop(0)
-            kept.append(current)
-            sorted_dets = [
-                det
-                for det in sorted_dets
-                if self._iou(current, det) <= self.iou_threshold
-            ]
-            if len(kept) >= self.max_faces_per_frame:
-                break
-
-        return kept
-
-    @staticmethod
-    def _iou(a: Detection, b: Detection) -> float:
-        """Compute IoU between two detections."""
-        x1 = max(a.x1, b.x1)
-        y1 = max(a.y1, b.y1)
-        x2 = min(a.x2, b.x2)
-        y2 = min(a.y2, b.y2)
-
-        inter_area = max(0, x2 - x1) * max(0, y2 - y1)
-        area_a = (a.x2 - a.x1) * (a.y2 - a.y1)
-        area_b = (b.x2 - b.x1) * (b.y2 - b.y1)
-        union_area = area_a + area_b - inter_area
-        if union_area == 0:
-            return 0.0
-        return inter_area / union_area
-
-    def extract_crops(
-        self,
-        detections: List[Detection],
-        output_dir: str,
-        crop_size: Tuple[int, int] = (224, 224),
-    ) -> List[Detection]:
-        """Extract resized face crops from original frames and update detections."""
-        from PIL import Image
-
-        output_dir_path = Path(output_dir)
-        output_dir_path.mkdir(parents=True, exist_ok=True)
-        cropped: List[Detection] = []
-
-        for idx, det in enumerate(detections):
-            try:
-                image = Image.open(det.frame_path).convert("RGB")
-                width, height = image.size
-
-                x1 = int(max(0, det.x1 * width / self.input_size))
-                y1 = int(max(0, det.y1 * height / self.input_size))
-                x2 = int(min(width, det.x2 * width / self.input_size))
-                y2 = int(min(height, det.y2 * height / self.input_size))
-
-                if x2 <= x1 or y2 <= y1:
-                    image.close()
-                    continue
-
-                crop = image.crop((x1, y1, x2, y2)).resize(crop_size, Image.Resampling.BILINEAR)
-                image.close()
-                crop_path = output_dir_path / f"crop_{int(time.time() * 1000)}_{idx}.jpg"
-                crop.save(crop_path, "JPEG", quality=95)
-                crop.close()
-                det.crop_path = str(crop_path)
-                cropped.append(det)
-            except Exception as exc:
-                logger.warning("Failed to extract crop for %s: %s", det.frame_path, exc)
-
-        return cropped

src/frame_sampler.py

@@ -1,163 +0,0 @@
-"""
-Frame sampling module for VideoDetect.
-
-Extracts uniform temporal frames from videos using FFmpeg, handles resolution
-constraints, and writes JPEG frames to a scratch directory.
-"""
-
-import logging
-import os
-import subprocess
-from pathlib import Path
-from typing import Iterable, List, Optional, Sequence, Tuple
-
-logger = logging.getLogger(__name__)
-
-
-def calculate_timestamps(duration: Optional[float], interval: float) -> List[float]:
-    """Return uniformly spaced timestamps in seconds for a video duration."""
-    if duration is None or duration <= 0:
-        return [0.0]
-    if interval <= 0:
-        interval = 30.0
-
-    count = max(1, int(duration / interval))
-    step = duration / count
-    return [round(i * step, 3) for i in range(count)]
-
-
-class FrameSampler:
-    """Extract sampled frames from videos using FFmpeg."""
-
-    def __init__(self, interval_seconds: int = 30, quality: int = 2, output_format: str = "jpeg"):
-        self.interval_seconds = interval_seconds
-        self.quality = quality
-        self.output_format = output_format.lower()
-
-    def extract_frame(
-        self,
-        video_path: str,
-        output_path: str,
-        timestamp: float,
-        resolution: Optional[Tuple[int, int]] = None,
-        timeout_seconds: int = 30,
-    ) -> Optional[str]:
-        """Extract a single frame at the provided timestamp."""
-        output = Path(output_path)
-        output.parent.mkdir(parents=True, exist_ok=True)
-
-        cmd = self._build_ffmpeg_command(
-            video_path=video_path,
-            output_path=str(output),
-            timestamp=timestamp,
-            resolution=resolution,
-            timeout_seconds=timeout_seconds,
-        )
-
-        try:
-            completed = subprocess.run(
-                cmd,
-                capture_output=True,
-                text=True,
-                timeout=timeout_seconds + 5,
-                check=False,
-            )
-        except subprocess.TimeoutExpired as exc:
-            logger.warning("Frame extraction timed out for %s at %.3fs", video_path, timestamp)
-            return None
-
-        if completed.returncode != 0:
-            logger.warning(
-                "Frame extraction failed for %s at %.3fs: %s",
-                video_path,
-                timestamp,
-                completed.stderr.strip(),
-            )
-            return None
-
-        if output.exists():
-            return str(output)
-        return None
-
-    def extract_frames(
-        self,
-        video_path: str,
-        output_dir: str,
-        duration: Optional[float] = None,
-        interval_seconds: Optional[int] = None,
-        resolution: Optional[Tuple[int, int]] = None,
-        timeout_seconds: int = 30,
-    ) -> List[str]:
-        """Extract uniform frames for the video and return output paths."""
-        resolved_interval = interval_seconds or self.interval_seconds
-        timestamps = calculate_timestamps(duration=duration, interval=float(resolved_interval))
-
-        extracted: List[str] = []
-        for ts in timestamps:
-            frame_name = self._frame_name_from_timestamp(ts, video_path)
-            output_path = str(Path(output_dir) / frame_name)
-            result = self.extract_frame(
-                video_path=video_path,
-                output_path=output_path,
-                timestamp=ts,
-                resolution=resolution,
-                timeout_seconds=timeout_seconds,
-            )
-            if result:
-                extracted.append(result)
-
-        return extracted
-
-    def _build_ffmpeg_command(
-        self,
-        video_path: str,
-        output_path: str,
-        timestamp: float,
-        resolution: Optional[Tuple[int, int]] = None,
-        timeout_seconds: int = 30,
-    ) -> List[str]:
-        """Build an FFmpeg command for extracting a single frame."""
-        cmd = ["ffmpeg", "-y", "-ss", str(timestamp), "-i", video_path]
-
-        vf_filters = []
-        if resolution is not None:
-            target_width, target_height = self._resolve_target_resolution(resolution)
-            vf_filters.append(f"scale={target_width}:{target_height}:force_original_aspect_ratio=decrease")
-
-        if vf_filters:
-            cmd.extend(["-vf", ",".join(vf_filters)])
-
-        cmd.extend([
-            "-vframes",
-            "1",
-            "-q:v",
-            str(self.quality),
-            "-f",
-            self.output_format,
-            output_path,
-        ])
-        return cmd
-
-    @staticmethod
-    def _resolve_target_resolution(resolution: Tuple[int, int]) -> Tuple[int, int]:
-        """Downscale frames larger than 1080p to fit VRAM constraints."""
-        width, height = resolution
-        if max(width, height) > 1080:
-            if width >= 3840 or height >= 2160:
-                return 1920, 1080
-            if width >= 2560 or height >= 1440:
-                return 1280, 720
-        return width, height
-
-    @staticmethod
-    def _frame_name_from_timestamp(timestamp: float, video_path: str) -> str:
-        video_id = Path(video_path).stem
-        timestamp_ms = int(round(timestamp * 1000))
-        return f"{video_id}_{timestamp_ms}.jpg"
-
-
-def get_target_resolution(resolution: Optional[Tuple[int, int]]) -> Tuple[int, int]:
-    """Compatibility helper for resolution handling."""
-    if resolution is None:
-        return (0, 0)
-    return FrameSampler._resolve_target_resolution(resolution)

src/gpu_manager.py

@@ -1,101 +0,0 @@
-"""GPU memory management and batch-size auto-tuning helpers."""
-
-import logging
-from typing import Optional, Tuple
-
-logger = logging.getLogger(__name__)
-
-
-class GPUMemoryManager:
-    """Track GPU memory and recommend safe batch sizes."""
-
-    def __init__(
-        self,
-        device: int = 0,
-        max_memory_gb: float = 18.0,
-        reduce_threshold_gb: float = 16.0,
-        increase_threshold_gb: float = 10.0,
-        initial_batch_size: int = 16,
-        min_batch_size: int = 1,
-        max_batch_size: int = 32,
-    ):
-        self.device = device
-        self.max_memory_gb = max_memory_gb
-        self.reduce_threshold_gb = reduce_threshold_gb
-        self.increase_threshold_gb = increase_threshold_gb
-        self.batch_size = initial_batch_size
-        self.min_batch_size = min_batch_size
-        self.max_batch_size = max_batch_size
-
-    def get_memory_stats(self) -> Tuple[float, float]:
-        """Return (allocated_gb, reserved_gb) for the managed device."""
-        try:
-            import torch
-
-            if not torch.cuda.is_available():
-                return 0.0, 0.0
-
-            allocated = torch.cuda.memory_allocated(self.device) / (1024**3)
-            reserved = torch.cuda.memory_reserved(self.device) / (1024**3)
-            return allocated, reserved
-        except Exception as exc:
-            logger.debug("Could not query GPU memory: %s", exc)
-            return 0.0, 0.0
-
-    def adjust_batch_size(self) -> int:
-        """Adjust the current batch size based on memory pressure."""
-        allocated, _ = self.get_memory_stats()
-
-        if allocated >= self.reduce_threshold_gb:
-            new_batch_size = max(self.min_batch_size, int(self.batch_size * 0.75))
-            if new_batch_size < self.batch_size:
-                logger.info(
-                    "GPU memory high (%.2f GB), reducing batch size %d -> %d",
-                    allocated,
-                    self.batch_size,
-                    new_batch_size,
-                )
-                self.batch_size = new_batch_size
-        elif allocated <= self.increase_threshold_gb:
-            new_batch_size = min(self.max_batch_size, int(self.batch_size * 1.25))
-            if new_batch_size > self.batch_size:
-                logger.info(
-                    "GPU memory low (%.2f GB), increasing batch size %d -> %d",
-                    allocated,
-                    self.batch_size,
-                    new_batch_size,
-                )
-                self.batch_size = new_batch_size
-
-        return self.batch_size
-
-    def is_memory_critical(self) -> bool:
-        """Return True if allocated memory is close to the hard limit."""
-        allocated, _ = self.get_memory_stats()
-        return allocated >= self.max_memory_gb
-
-    def empty_cache(self):
-        """Try to release unused cached GPU memory."""
-        try:
-            import torch
-
-            if torch.cuda.is_available():
-                torch.cuda.empty_cache()
-        except Exception as exc:
-            logger.debug("Could not empty GPU cache: %s", exc)
-
-    @property
-    def current_batch_size(self) -> int:
-        return self.batch_size
-
-
-def get_available_vram_gb(device: int = 0) -> float:
-    """Return total available VRAM in GB, or 0.0 if CUDA is unavailable."""
-    try:
-        import torch
-
-        if not torch.cuda.is_available():
-            return 0.0
-        return torch.cuda.get_device_properties(device).total_memory / (1024**3)
-    except Exception:
-        return 0.0

src/health_check.py

@@ -1,134 +0,0 @@
-"""
-Worker health check HTTP endpoint.
-
-Exposes GET /health returning a JSON status document.
-Designed to be started in a background thread alongside the main worker.
-"""
-
-import json
-import logging
-import os
-import threading
-import time
-from datetime import datetime, timezone
-from http.server import BaseHTTPRequestHandler, HTTPServer
-from pathlib import Path
-from typing import Any, Dict, Optional
-
-logger = logging.getLogger(__name__)
-
-_START_TIME = time.monotonic()
-
-
-class HealthStatus:
-    """Mutable singleton updated by the worker as it processes videos."""
-
-    def __init__(self):
-        self._lock = threading.Lock()
-        self._data: Dict[str, Any] = {
-            "status": "starting",
-            "gpu_available": False,
-            "gpu_memory_used_gb": 0.0,
-            "queue_depth": 0,
-            "videos_processed_today": 0,
-            "last_error": None,
-        }
-
-    def update(self, **kwargs):
-        with self._lock:
-            self._data.update(kwargs)
-
-    def snapshot(self) -> Dict[str, Any]:
-        with self._lock:
-            data = dict(self._data)
-        data["uptime_seconds"] = round(time.monotonic() - _START_TIME, 1)
-        return data
-
-
-# Module-level singleton shared between the HTTP handler and the worker
-health = HealthStatus()
-
-
-class _HealthHandler(BaseHTTPRequestHandler):
-    """Minimal HTTP handler — only responds to GET /health."""
-
-    def do_GET(self):  # noqa: N802
-        if self.path.rstrip("/") == "/health":
-            body = json.dumps(health.snapshot(), default=str).encode()
-            self.send_response(200)
-            self.send_header("Content-Type", "application/json")
-            self.send_header("Content-Length", str(len(body)))
-            self.end_headers()
-            self.wfile.write(body)
-        else:
-            self.send_response(404)
-            self.end_headers()
-
-    def log_message(self, fmt, *args):  # silence default access log
-        logger.debug("health_check: " + fmt, *args)
-
-
-def start_health_server(port: int = 8080) -> threading.Thread:
-    """
-    Start the health HTTP server in a daemon thread.
-
-    Returns the thread so callers can join if needed.
-    """
-    server = HTTPServer(("0.0.0.0", port), _HealthHandler)
-
-    def _serve():
-        logger.info("Health check server listening on port %d", port)
-        server.serve_forever()
-
-    t = threading.Thread(target=_serve, daemon=True, name="health-server")
-    t.start()
-    return t
-
-
-def refresh_health_from_system(db_connector=None, scratch_path: str = "/scratch"):
-    """
-    Update the health singleton with current GPU, queue, and disk state.
-
-    Call this periodically from the worker main loop.
-    """
-    updates: Dict[str, Any] = {"status": "healthy"}
-
-    # GPU state
-    try:
-        import pynvml
-        pynvml.nvmlInit()
-        handle = pynvml.nvmlDeviceGetHandleByIndex(0)
-        mem = pynvml.nvmlDeviceGetMemoryInfo(handle)
-        updates["gpu_available"] = True
-        updates["gpu_memory_used_gb"] = round(mem.used / 1024**3, 2)
-        pynvml.nvmlShutdown()
-    except Exception:
-        updates["gpu_available"] = _torch_gpu_available()
-
-    # Queue depth from DB
-    if db_connector is not None:
-        try:
-            rows = db_connector.fetchall(
-                "SELECT COUNT(*) AS cnt FROM videos WHERE status IN ('PENDING','PROCESSING')"
-            )
-            updates["queue_depth"] = int((rows or [{"cnt": 0}])[0]["cnt"])
-
-            today = datetime.now(timezone.utc).date().isoformat()
-            rows2 = db_connector.fetchall(
-                "SELECT COUNT(*) AS cnt FROM videos "
-                "WHERE status = 'COMPLETED' AND DATE(last_processed_time) = %s",
-                (today,),
-            )
-            updates["videos_processed_today"] = int((rows2 or [{"cnt": 0}])[0]["cnt"])
-        except Exception as exc:
-            logger.debug("Health DB query failed: %s", exc)
-
-    health.update(**updates)
-
-
-def _torch_gpu_available() -> bool:
-    try:
-        import torch
-        return torch.cuda.is_available()
-    except ImportError:
-        return False

src/logging_config.py

@@ -1,87 +0,0 @@
-"""
-Logging configuration for VideoDetect.
-
-Sets up JSON structured logging via python-json-logger with:
-- Configurable log levels
-- Standardized field names
-- Log rotation
-- All logs to stdout for Docker capture
-"""
-
-import json
-import logging
-import logging.handlers
-import sys
-from datetime import datetime, timezone
-
-
-def setup_logging(
-    level: str = "INFO",
-    log_format: str = "json",
-    rotation_max_bytes: int = 104857600,  # 100MB
-    rotation_backup_count: int = 10,
-):
-    """Configure structured logging for the application."""
-    log_level = getattr(logging, level.upper(), logging.INFO)
-
-    # Root logger
-    root_logger = logging.getLogger()
-    root_logger.setLevel(log_level)
-
-    # Remove existing handlers
-    root_logger.handlers.clear()
-
-    # Handler: stdout (for Docker capture)
-    handler = logging.StreamHandler(sys.stdout)
-    handler.setLevel(log_level)
-
-    if log_format == "json":
-        formatter = JsonFormatter()
-    else:
-        formatter = logging.Formatter(
-            "%(asctime)s %(levelname)s %(name)s %(message)s",
-            datefmt="%Y-%m-%dT%H:%M:%S%z",
-        )
-
-    handler.setFormatter(formatter)
-    root_logger.addHandler(handler)
-
-    # Handler: file rotation (for persistence)
-    file_handler = logging.handlers.RotatingFileHandler(
-        filename="/logs/videodetect.log",
-        maxBytes=rotation_max_bytes,
-        backupCount=rotation_backup_count,
-        encoding="utf-8",
-    )
-    file_handler.setLevel(log_level)
-    file_handler.setFormatter(formatter)
-    root_logger.addHandler(file_handler)
-
-    logging.info("Logging configured: level=%s format=%s", level, log_format)
-
-
-class JsonFormatter(logging.Formatter):
-    """JSON log formatter with standardized fields."""
-
-    def format(self, record: logging.LogRecord) -> str:
-        log_data = {
-            "timestamp": datetime.fromtimestamp(record.created, tz=timezone.utc).isoformat(),
-            "level": record.levelname,
-            "logger": record.name,
-            "message": record.getMessage(),
-            "module": record.module,
-            "function": record.funcName,
-            "line": record.lineno,
-        }
-
-        # Add extra fields
-        if hasattr(record, "video_id"):
-            log_data["video_id"] = record.video_id
-        if hasattr(record, "metadata"):
-            log_data["metadata"] = record.metadata
-
-        # Add exception info if present
-        if record.exc_info and record.exc_info[0] is not None:
-            log_data["exception"] = self.formatException(record.exc_info)
-
-        return json.dumps(log_data, default=str)

src/metrics.py

@@ -1,261 +0,0 @@
-"""
-Prometheus metrics definitions for VideoDetect.
-
-All metric objects are module-level singletons — import and call them directly.
-Call start_metrics_server() once at worker startup to expose /metrics.
-"""
-
-import logging
-import threading
-from typing import Optional
-
-logger = logging.getLogger(__name__)
-
-# Populated on first _ensure_prometheus() call; None if library unavailable.
-_prometheus_available: Optional[bool] = None
-_server_started = False
-_server_lock = threading.Lock()
-
-# ---------------------------------------------------------------------------
-# Lazy metric definitions — avoid import errors when prometheus_client absent
-# ---------------------------------------------------------------------------
-
-def _ensure_prometheus():
-    global _prometheus_available
-    if _prometheus_available is not None:
-        return _prometheus_available
-    try:
-        import prometheus_client  # noqa: F401
-        _prometheus_available = True
-    except ImportError:
-        logger.warning("prometheus_client not installed; metrics disabled")
-        _prometheus_available = False
-    return _prometheus_available
-
-
-class _NoOpMetric:
-    """Drop-in replacement used when prometheus_client is unavailable."""
-    def labels(self, **_):
-        return self
-    def inc(self, *_, **__):
-        pass
-    def set(self, *_, **__):
-        pass
-    def observe(self, *_, **__):
-        pass
-
-
-def _counter(name, doc, labelnames=()):
-    if not _ensure_prometheus():
-        return _NoOpMetric()
-    from prometheus_client import Counter
-    return Counter(name, doc, list(labelnames))
-
-
-def _gauge(name, doc, labelnames=()):
-    if not _ensure_prometheus():
-        return _NoOpMetric()
-    from prometheus_client import Gauge
-    return Gauge(name, doc, list(labelnames))
-
-
-def _histogram(name, doc, labelnames=(), buckets=None):
-    if not _ensure_prometheus():
-        return _NoOpMetric()
-    from prometheus_client import Histogram
-    kwargs = {"labelnames": list(labelnames)}
-    if buckets is not None:
-        kwargs["buckets"] = buckets
-    return Histogram(name, doc, **kwargs)
-
-
-# ---------------------------------------------------------------------------
-# Counters
-# ---------------------------------------------------------------------------
-
-videos_processed_total = _counter(
-    "videos_processed_total",
-    "Total videos processed",
-    ["routing_decision"],
-)
-
-videos_processed_by_model_total = _counter(
-    "videos_processed_by_model_total",
-    "Total videos processed per model version",
-    ["model_version"],
-)
-
-frames_extracted_total = _counter(
-    "frames_extracted_total",
-    "Total frames extracted across all videos",
-)
-
-faces_detected_total = _counter(
-    "faces_detected_total",
-    "Total face crops detected",
-)
-
-inference_errors_total = _counter(
-    "inference_errors_total",
-    "Total inference errors by type",
-    ["error_type"],
-)
-
-retry_attempts_total = _counter(
-    "retry_attempts_total",
-    "Total retry attempts by pipeline step",
-    ["step"],
-)
-
-# ---------------------------------------------------------------------------
-# Gauges
-# ---------------------------------------------------------------------------
-
-gpu_utilization_percent = _gauge(
-    "gpu_utilization_percent",
-    "GPU utilization as a percentage",
-    ["gpu_id"],
-)
-
-gpu_memory_used_bytes = _gauge(
-    "gpu_memory_used_bytes",
-    "GPU memory currently allocated in bytes",
-    ["gpu_id"],
-)
-
-gpu_memory_free_bytes = _gauge(
-    "gpu_memory_free_bytes",
-    "GPU memory currently free in bytes",
-    ["gpu_id"],
-)
-
-queue_depth_pending = _gauge(
-    "queue_depth_pending",
-    "Number of videos in PENDING state",
-)
-
-queue_depth_processing = _gauge(
-    "queue_depth_processing",
-    "Number of videos currently in PROCESSING state",
-)
-
-queue_depth_review = _gauge(
-    "queue_depth_review",
-    "Number of unannotated videos in the review queue",
-)
-
-scratch_usage_bytes = _gauge(
-    "scratch_usage_bytes",
-    "Scratch space used in bytes",
-)
-
-scratch_usage_percent = _gauge(
-    "scratch_usage_percent",
-    "Scratch space used as a percentage of total",
-)
-
-# ---------------------------------------------------------------------------
-# Histograms
-# ---------------------------------------------------------------------------
-
-_CONFIDENCE_BUCKETS = [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0]
-
-video_processing_duration_seconds = _histogram(
-    "video_processing_duration_seconds",
-    "End-to-end processing time per video in seconds",
-    ["routing_decision"],
-)
-
-confidence_score_distribution = _histogram(
-    "confidence_score_distribution",
-    "Distribution of video-level confidence scores",
-    buckets=_CONFIDENCE_BUCKETS,
-)
-
-frame_count_per_video = _histogram(
-    "frame_count_per_video",
-    "Number of frames sampled per video",
-    buckets=[1, 2, 5, 10, 20, 50, 100, 200, 500],
-)
-
-face_count_per_video = _histogram(
-    "face_count_per_video",
-    "Number of face crops detected per video",
-    buckets=[0, 1, 2, 5, 10, 20, 50, 100],
-)
-
-# ---------------------------------------------------------------------------
-# Server startup
-# ---------------------------------------------------------------------------
-
-def start_metrics_server(port: int = 9090):
-    """Start the Prometheus HTTP metrics endpoint (idempotent)."""
-    global _server_started
-    with _server_lock:
-        if _server_started:
-            return
-        if not _ensure_prometheus():
-            logger.warning("Cannot start metrics server: prometheus_client unavailable")
-            return
-        try:
-            from prometheus_client import start_http_server
-            start_http_server(port)
-            _server_started = True
-            logger.info("Prometheus metrics server started on port %d", port)
-        except Exception as exc:
-            logger.error("Failed to start metrics server: %s", exc)
-
-
-# ---------------------------------------------------------------------------
-# Convenience update functions
-# ---------------------------------------------------------------------------
-
-def update_queue_depths(db_connector):
-    """Query the DB and refresh all queue-depth gauges."""
-    try:
-        rows = db_connector.fetchall(
-            """SELECT status, COUNT(*) AS cnt
-               FROM videos
-               WHERE status IN ('PENDING', 'PROCESSING')
-               GROUP BY status"""
-        )
-        counts = {r["status"]: int(r["cnt"]) for r in (rows or [])}
-        queue_depth_pending.set(counts.get("PENDING", 0))
-        queue_depth_processing.set(counts.get("PROCESSING", 0))
-
-        review_rows = db_connector.fetchall(
-            "SELECT COUNT(*) AS cnt FROM review_queue WHERE annotated = FALSE"
-        )
-        queue_depth_review.set(int((review_rows or [{"cnt": 0}])[0]["cnt"]))
-    except Exception as exc:
-        logger.warning("Failed to update queue depth metrics: %s", exc)
-
-
-def update_gpu_metrics():
-    """Poll nvidia-smi (via pynvml) and refresh GPU gauges."""
-    try:
-        import pynvml
-        pynvml.nvmlInit()
-        count = pynvml.nvmlDeviceGetCount()
-        for i in range(count):
-            handle = pynvml.nvmlDeviceGetHandleByIndex(i)
-            util = pynvml.nvmlDeviceGetUtilizationRates(handle)
-            mem = pynvml.nvmlDeviceGetMemoryInfo(handle)
-            gpu_id = str(i)
-            gpu_utilization_percent.labels(gpu_id=gpu_id).set(util.gpu)
-            gpu_memory_used_bytes.labels(gpu_id=gpu_id).set(mem.used)
-            gpu_memory_free_bytes.labels(gpu_id=gpu_id).set(mem.free)
-        pynvml.nvmlShutdown()
-    except Exception as exc:
-        logger.debug("GPU metrics unavailable: %s", exc)
-
-
-def update_scratch_metrics(scratch_path: str = "/scratch"):
-    """Measure scratch disk usage and refresh gauges."""
-    try:
-        import shutil
-        total, used, free = shutil.disk_usage(scratch_path)
-        scratch_usage_bytes.set(used)
-        scratch_usage_percent.set(round(used / max(total, 1) * 100, 2))
-    except Exception as exc:
-        logger.debug("Scratch metrics unavailable: %s", exc)

src/prober.py

@@ -1,182 +0,0 @@
-"""
-Video Probing Module
-
-Extracts video metadata (codec, resolution, duration, frame rate) using ffprobe.
-Handles errors gracefully for corrupt or unsupported files.
-"""
-
-import json
-import logging
-import os
-import subprocess
-import time
-from dataclasses import dataclass, field
-from typing import Optional
-
-logger = logging.getLogger(__name__)
-
-
-@dataclass
-class VideoMetadata:
-    """Metadata extracted from a video file."""
-    file_path: str
-    codec: Optional[str] = None
-    resolution_w: Optional[int] = None
-    resolution_h: Optional[int] = None
-    duration: Optional[float] = None
-    frame_rate: Optional[float] = None
-    file_size: Optional[int] = None
-    status: str = "PENDING"
-    error_message: Optional[str] = None
-    probe_time: float = field(default_factory=time.time)
-
-    @property
-    def is_valid(self) -> bool:
-        return self.status == "PENDING" and self.codec is not None
-
-    @property
-    def is_unscannable(self) -> bool:
-        return self.status == "UNSCANNABLE"
-
-    def to_dict(self) -> dict:
-        return {
-            "file_path": self.file_path,
-            "codec": self.codec,
-            "resolution_w": self.resolution_w,
-            "resolution_h": self.resolution_h,
-            "duration": self.duration,
-            "frame_rate": self.frame_rate,
-            "file_size": self.file_size,
-            "status": self.status,
-            "error_message": self.error_message,
-        }
-
-
-class VideoProber:
-    """Probe video files using ffprobe to extract metadata."""
-
-    def __init__(self, timeout: int = 10):
-        self.timeout = timeout
-
-    def probe(self, file_path: str) -> VideoMetadata:
-        """Probe a video file and return metadata."""
-        metadata = VideoMetadata(file_path=file_path)
-
-        # Get file size
-        try:
-            metadata.file_size = self._get_file_size(file_path)
-        except OSError as e:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = f"Cannot read file: {e}"
-            logger.warning("File access error for %s: %s", file_path, e)
-            return metadata
-
-        # Run ffprobe
-        try:
-            result = self._run_ffprobe(file_path)
-            if result is None:
-                metadata.status = "UNSCANNABLE"
-                metadata.error_message = "ffprobe timed out or failed"
-                logger.warning("ffprobe failed for %s", file_path)
-                return metadata
-
-            metadata = self._parse_ffprobe_output(result, file_path)
-        except subprocess.TimeoutExpired:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = f"ffprobe timed out after {self.timeout}s"
-            logger.warning("ffprobe timeout for %s", file_path)
-        except Exception as e:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = f"ffprobe error: {e}"
-            logger.warning("ffprobe error for %s: %s", file_path, e)
-
-        return metadata
-
-    def _run_ffprobe(self, file_path: str) -> Optional[str]:
-        """Run ffprobe and return JSON output."""
-        cmd = [
-            "ffprobe",
-            "-v", "error",
-            "-select_streams", "v:0",
-            "-show_entries", "stream=codec_name,width,height,r_frame_rate,duration",
-            "-show_entries", "format=duration,size",
-            "-of", "json",
-            file_path,
-        ]
-
-        try:
-            output = subprocess.run(
-                cmd,
-                capture_output=True,
-                text=True,
-                timeout=self.timeout,
-            )
-
-            if output.returncode != 0:
-                logger.debug("ffprobe stderr for %s: %s", file_path, output.stderr)
-                return None
-
-            return output.stdout
-        except subprocess.TimeoutExpired:
-            return None
-
-    def _parse_ffprobe_output(self, output: str, file_path: str) -> VideoMetadata:
-        """Parse ffprobe JSON output into VideoMetadata."""
-        metadata = VideoMetadata(file_path=file_path)
-
-        try:
-            data = json.loads(output)
-        except json.JSONDecodeError as e:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = f"Invalid ffprobe output: {e}"
-            return metadata
-
-        # Extract stream info
-        streams = data.get("streams", [])
-        if not streams:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = "No video streams found"
-            return metadata
-
-        stream = streams[0]
-        metadata.codec = stream.get("codec_name")
-        metadata.resolution_w = stream.get("width")
-        metadata.resolution_h = stream.get("height")
-
-        # Parse frame rate
-        r_frame_rate = stream.get("r_frame_rate")
-        if r_frame_rate and "/" in r_frame_rate:
-            try:
-                num, den = r_frame_rate.split("/")
-                metadata.frame_rate = float(num) / float(den) if float(den) != 0 else None
-            except (ValueError, ZeroDivisionError):
-                pass
-
-        # Extract format info
-        format_info = data.get("format", {})
-        if format_info.get("duration"):
-            try:
-                metadata.duration = float(format_info["duration"])
-            except (ValueError, TypeError):
-                pass
-
-        if format_info.get("size"):
-            try:
-                metadata.file_size = int(format_info["size"])
-            except (ValueError, TypeError):
-                pass
-
-        # Validate we got essential data
-        if not metadata.codec:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = "No codec information available"
-        elif not metadata.duration:
-            metadata.status = "UNSCANNABLE"
-            metadata.error_message = "No duration information available"
-
-        return metadata
-
-    @staticmethod
-    def _get_file_size(file_path: str) -> int:
-        """Get file size in bytes."""
-        return os.path.getsize(file_path)

src/router.py

@@ -1,26 +0,0 @@
-"""Threshold-based routing of video-level confidence to MATCH / REVIEW / SKIP."""
-
-import logging
-
-logger = logging.getLogger(__name__)
-
-MATCH  = "MATCH"
-REVIEW = "REVIEW"
-SKIP   = "SKIP"
-
-
-def route(
-    confidence: float,
-    t_high: float = 0.75,
-    t_low: float = 0.45,
-) -> str:
-    """Return the routing decision for a video-level confidence score."""
-    if confidence >= t_high:
-        decision = MATCH
-    elif confidence >= t_low:
-        decision = REVIEW
-    else:
-        decision = SKIP
-
-    logger.debug("route: C=%.4f t_high=%.2f t_low=%.2f → %s", confidence, t_high, t_low, decision)
-    return decision

src/scratch_manager.py

@@ -1,42 +0,0 @@
-"""Utilities for managing scratch space used by frame sampling."""
-
-import logging
-import shutil
-from pathlib import Path
-from typing import Optional
-
-logger = logging.getLogger(__name__)
-
-
-class ScratchManager:
-    """Create and clean per-video frame scratch directories."""
-
-    def __init__(self, base_path: str = "/scratch", video_id: Optional[str] = None, auto_cleanup: bool = True):
-        self.base_path = Path(base_path)
-        self.video_id = video_id or "unknown"
-        self.auto_cleanup = auto_cleanup
-        self.frame_dir = self.base_path / self.video_id / "frames"
-
-    def ensure_frame_dir(self) -> Path:
-        """Create the per-video scratch directory if it does not exist."""
-        self.frame_dir.mkdir(parents=True, exist_ok=True)
-        return self.frame_dir
-
-    def cleanup(self) -> None:
-        """Remove the frame scratch directory only."""
-        if self.auto_cleanup and self.frame_dir.exists():
-            shutil.rmtree(self.frame_dir)
-            logger.info("Cleaned scratch frames for %s", self.video_id)
-
-    def cleanup_all(self) -> None:
-        """Remove the entire per-video scratch directory (frames + crops)."""
-        video_root = self.base_path / self.video_id
-        if self.auto_cleanup and video_root.exists():
-            shutil.rmtree(video_root)
-            logger.info("Cleaned all scratch data for %s", self.video_id)
-
-    def usage_bytes(self) -> int:
-        """Return the total size of the scratch directory in bytes."""
-        if not self.frame_dir.exists():
-            return 0
-        return sum(path.stat().st_size for path in self.frame_dir.rglob("*") if path.is_file())

src/task_processor.py

@@ -1,297 +0,0 @@
-"""Standalone AI-processing pipeline for the task-worker architecture.
-
-``process_video(video_dict, config)`` runs the full scan pipeline on a single
-video file and returns a results dict that can be submitted via the REST API.
-
-It reuses existing classes from the codebase:
-    * ``VideoProber``      – ffprobe metadata extraction
-    * ``ScratchManager``   – per-video temp dirs under /scratch
-    * ``FrameSampler``     – uniform frame extraction via ffmpeg
-    * ``FaceDetector``     – TensorRT face detection on sampled frames
-    * ``FaceClassifier``   – MobileNetV3 classification of face crops
-    * ``aggregator.aggregate`` – per-crop → video-level confidence
-    * ``router.route``     – routing thresholds (MATCH / REVIEW / SKIP)
-
-GPU model loading is lazily initialised and cached at module level so that
-sequential invocations within the same Python process reuse the same loaded
-engines.  This is important because each short-lived worker may be asked to
-process several tasks in a row (``--tasks N``).
-"""
-
-from __future__ import annotations
-
-import logging
-import os
-import time
-from pathlib import Path
-from typing import Any, Dict, Optional
-
-logger = logging.getLogger(__name__)
-
-# ---------------------------------------------------------------------------
-# Lazy imports — avoid heavy imports until actually needed
-# ---------------------------------------------------------------------------
-_face_detector_instance: Optional[Any] = None
-_classifier_instance: Optional[Any] = None
-
-
-def _get_face_detector(config: dict) -> Any:
-    """Return a singleton ``FaceDetector`` (initialised once per process)."""
-    global _face_detector_instance
-    if _face_detector_instance is not None:
-        return _face_detector_instance
-
-    from face_detector import FaceDetector  # noqa: local import, heavy
-
-    cfg = (config or {}).get("face_detection", {})
-    engine_path = cfg.get(
-        "model_path", "/models/face_detector/face_detector.trt"
-    )
-    _face_detector_instance = FaceDetector(
-        engine_path=engine_path,
-        input_size=int(cfg.get("input_size", 640)),
-        confidence_threshold=float(cfg.get("confidence_threshold", 0.25)),
-        iou_threshold=float(cfg.get("iou_threshold", 0.45)),
-        max_faces_per_frame=int(cfg.get("max_faces_per_frame", 10)),
-        max_faces_per_video=int(cfg.get("max_faces_per_video", 100)),
-    )
-    return _face_detector_instance
-
-
-def _get_classifier(config: dict) -> Any:
-    """Return a singleton ``FaceClassifier`` (initialised once per process)."""
-    global _classifier_instance
-    if _classifier_instance is not None:
-        return _classifier_instance
-
-    from classifier import FaceClassifier  # noqa: local import, heavy
-
-    cfg = (config or {}).get("classifier", {})
-    engine_path = cfg.get(
-        "model_path", "/models/classifier/classifier.trt"
-    )
-    _classifier_instance = FaceClassifier(
-        engine_path=engine_path,
-        temperature=float(cfg.get("temperature", 1.0)),
-        input_size=int(cfg.get("input_size", 224)),
-    )
-    return _classifier_instance
-
-
-# ---------------------------------------------------------------------------
-# Public API
-# ---------------------------------------------------------------------------
-
-def get_model_version() -> str:
-    """Return the currently active model version from the DB (best-effort)."""
-    try:
-        from db_connector import DatabaseConnector  # noqa: local import, heavy
-        db = DatabaseConnector("default")
-        row = db.fetchone(
-            "SELECT version FROM models WHERE status = 'ACTIVE' LIMIT 1"
-        )
-        if row:
-            return row["version"]
-    except Exception as exc:
-        logger.debug("Could not fetch active model version: %s", exc)
-    return "v0.0.0-placeholder"
-
-
-def process_video(video: Dict[str, Any], config: Optional[Dict] = None) -> Dict[str, Any]:
-    """Run the full AI scan pipeline on a single video file.
-
-    Args:
-        video: Metadata dict (as returned by ``ApiClient.get_video``).
-               Must contain at minimum ``"id"`` and ``"file_path"``.
-        config: The loaded ``config.yaml`` dict (or None for defaults).
-
-    Returns:
-        A results dict suitable for submission via the REST API.
-    """
-    config = config or {}
-    start_time = time.time()
-    video_id = video["id"]
-    file_path = video["file_path"]
-
-    logger.info("Processing video %d: %s", video_id, file_path)
-
-    sampling_cfg = (config or {}).get("sampling", {})
-    storage_cfg = (config or {}).get("storage", {})
-    gpu_cfg = (config or {}).get("gpu", {})
-    batching_cfg = (config or {}).get("batching", {})
-    agg_cfg = (config or {}).get("aggregation", {})
-    routing_cfg = (config or {}).get("routing", {})
-
-    try:
-        # 1. Probe metadata (use DB metadata if already populated, re-probe)
-        prober = VideoProber(timeout=10)
-        metadata = prober.probe(file_path)
-        if metadata.is_unscannable:
-            raise RuntimeError(metadata.error_message or "Video metadata could not be determined")
-
-        # Use video from API if available, fall back to probe results
-        resolution_w = video.get("resolution_w") or metadata.resolution_w or 640
-        resolution_h = video.get("resolution_h") or metadata.resolution_h or 480
-        duration = video.get("duration") or metadata.duration or 10.0
-
-        logger.info(
-            "Video %d: codec=%s resolution=%dx%d duration=%.1fs",
-            video_id, metadata.codec or "unknown",
-            resolution_w, resolution_h, duration,
-        )
-
-        # 2. Set up scratch space
-        scratch = ScratchManager(
-            base_path=storage_cfg.get("scratch_path", "/scratch"),
-            video_id=str(video_id),
-            auto_cleanup=True,
-        )
-        frame_dir = scratch.ensure_frame_dir()
-
-        # 3. Sample frames
-        interval = int(sampling_cfg.get("interval_seconds", 30))
-        quality = int(sampling_cfg.get("quality", 2))
-        sampler = FrameSampler(interval_seconds=interval, quality=quality)
-
-        resolution = (resolution_w, resolution_h)
-        extracted_frames = sampler.extract_frames(
-            video_path=file_path,
-            output_dir=str(frame_dir),
-            duration=duration,
-            interval_seconds=interval,
-            resolution=resolution,
-            timeout_seconds=30,
-        )
-
-        if not extracted_frames:
-            scratch.cleanup_all()
-            raise RuntimeError("No frames were extracted")
-
-        logger.info(
-            "Video %d: extracted %d frame(s)", video_id, len(extracted_frames)
-        )
-
-        # 4. Face detection
-        detector = _get_face_detector(config)
-        batch_size = _get_batch_size(gpu_cfg, batching_cfg)
-
-        detections_per_frame = detector.detect_faces(
-            extracted_frames, batch_size=batch_size
-        )
-
-        all_detections = sorted(
-            [d for dets in detections_per_frame for d in dets],
-            key=lambda d: d.confidence,
-            reverse=True,
-        )
-        total_faces = len(all_detections)
-
-        # 5. Classify (or SKIP if no faces)
-        if total_faces == 0:
-            logger.info(
-                "Video %d: no faces detected → routing to SKIP", video_id
-            )
-            scratch.cleanup_all()
-            return _failed_result(video_id, start_time, 0.0, "SKIP")
-
-        crop_dir = Path(scratch.frame_dir.parent) / "crops"
-        cropped_detections = detector.extract_crops(
-            all_detections, output_dir=str(crop_dir), crop_size=(224, 224)
-        )
-        crop_paths = [d.crop_path for d in cropped_detections if d.crop_path]
-
-        classifier = _get_classifier(config)
-        frame_confidences = classifier.classify(
-            crop_paths, batch_size=batch_size
-        )
-
-        # 6. Aggregate confidence
-        from aggregator import aggregate as agg_func  # noqa: local import
-
-        video_confidence = agg_func(
-            frame_confidences,
-            strategy=agg_cfg.get("strategy", "max"),
-            alpha=float(agg_cfg.get("alpha", 1.0)),
-            beta=float(agg_cfg.get("beta", 0.1)),
-            top_k=int(agg_cfg.get("top_k", 3)),
-        )
-
-        # 7. Route
-        from router import route as route_fn  # noqa: local import
-
-        routing = route_fn(
-            video_confidence,
-            t_high=float(routing_cfg.get("T_high", 0.75)),
-            t_low=float(routing_cfg.get("T_low", 0.45)),
-        )
-
-        processing_time = time.time() - start_time
-        logger.info(
-            "Video %d complete: C=%.4f routing=%s faces=%d frames=%d time=%.1fs",
-            video_id, video_confidence, routing, total_faces,
-            len(extracted_frames), processing_time,
-        )
-
-        scratch.cleanup_all()
-
-        return {
-            "status":                 "COMPLETED",
-            "confidence":             round(video_confidence, 4),
-            "routing_decision":       routing,
-            "face_count":             total_faces,
-            "frame_count":            len(extracted_frames),
-            "model_version":          get_model_version(),
-            "processing_time_seconds": round(processing_time, 2),
-            "error":                  None,
-        }
-
-    except Exception as exc:
-        logger.error("Processing video %d failed: %s", video_id, exc, exc_info=True)
-        try:
-            scratch.cleanup_all()  # noqa: undefined-name guard below
-        except NameError:
-            pass  # scratch was never created (probe/probe error)
-
-        return {
-            "status":                 "FAILED",
-            "confidence":             0.0,
-            "routing_decision":       "REVIEW",
-            "face_count":             0,
-            "frame_count":            0,
-            "model_version":          get_model_version(),
-            "processing_time_seconds": round(time.time() - start_time, 2),
-            "error":                  str(exc),
-        }
-
-
-# ---------------------------------------------------------------------------
-# Helpers
-# ---------------------------------------------------------------------------
-
-def _get_batch_size(gpu_cfg: dict, batching_cfg: dict) -> int:
-    """Compute an appropriate batch size based on GPU config."""
-    from gpu_manager import GPUMemoryManager  # noqa: local import, heavy
-
-    mgr = GPUMemoryManager(
-        max_memory_gb=gpu_cfg.get("max_memory_gb", 18.0),
-        reduce_threshold_gb=batching_cfg.get("vram_reduce_threshold_gb", 16.0),
-        increase_threshold_gb=batching_cfg.get("vram_increase_threshold_gb", 10.0),
-        initial_batch_size=batching_cfg.get("max_batch_size", 16),
-    )
-    return mgr.current_batch_size
-
-
-def _failed_result(
-    video_id: int, start_time: float, confidence: float, routing: str
-) -> Dict[str, Any]:
-    """Build a SKIP/early-exit result dict (no faces case)."""
-    return {
-        "status": "COMPLETED",
-        "confidence": round(confidence, 4),
-        "routing_decision": routing,
-        "face_count": 0,
-        "frame_count": 0,
-        "model_version": get_model_version(),
-        "processing_time_seconds": round(time.time() - start_time, 2),
-        "error": None,
-    }

src/task_worker.py

@@ -1,186 +0,0 @@
-"""VideoDetect task worker — short-lived process for AI scanning.
-
-Usage::
-
-    python3 -m src.task_worker                 # process 1 task and exit
-    python3 -m src.task_worker --tasks 50      # process up to 50 tasks
-    python3 src/task_worker.py --tasks 10      # direct invocation
-
-Environment variables:
-    API_BASE_URL (default http://localhost:3000)
-       Base URL of the Dancer2 REST API.
-
-    TASK_COUNT (default 1)
-       Maximum number of tasks to process before exiting.
-
-On success exits with code 0; on unrecoverable errors exits non-zero.
-"""
-
-from __future__ import annotations
-
-import argparse
-import json
-import logging
-import os
-import signal
-import sys
-from pathlib import Path
-
-# Ensure the src/ directory is on sys.path so our submodules import cleanly
-_src = Path(__file__).resolve().parent
-if str(_src) not in sys.path:
-    sys.path.insert(0, str(_src))
-
-from api_client import ApiClient, ApiError
-from task_processor import process_video, get_model_version
-from config_loader import get_config
-from logging_config import setup_logging
-
-logger = logging.getLogger(__name__)
-
-# ---------------------------------------------------------------------------
-# Graceful shutdown
-# ---------------------------------------------------------------------------
-
-_shutdown_requested = False
-
-
-def _signal_handler(signum: int, frame) -> None:
-    logger.info("Received signal %d — finishing current task then exiting", signum)
-    global _shutdown_requested
-    _shutdown_requested = True
-
-
-signal.signal(signal.SIGTERM, _signal_handler)
-signal.signal(signal.SIGINT, _signal_handler)
-
-# ---------------------------------------------------------------------------
-# CLI entry point
-# ---------------------------------------------------------------------------
-
-
-def parse_args(argv: list[str] | None = None) -> argparse.Namespace:
-    parser = argparse.ArgumentParser(
-        description="VideoDetect task worker — process AI scan tasks",
-    )
-    parser.add_argument(
-        "--tasks",
-        type=int,
-        default=int(os.environ.get("TASK_COUNT", "1")),
-        help="Number of tasks to process before exiting (default: 1 or $TASK_COUNT)",
-    )
-    parser.add_argument(
-        "--api-url",
-        default=os.environ.get("API_BASE_URL", "http://localhost:3000"),
-        help="Base URL of the Dancer2 REST API (default: http://localhost:3000)",
-    )
-    return parser.parse_args(argv)
-
-
-def main(argv: list[str] | None = None) -> int:
-    """Run the task worker loop.
-
-    Returns exit code (0 = success).
-    """
-    args = parse_args(argv)
-
-    # Load config for the processing pipeline
-    config = get_config()
-
-    # Setup JSON logging
-    log_cfg = (config or {}).get("logging", {})
-    setup_logging(
-        level=log_cfg.get("level", "INFO"),
-        log_format=log_cfg.get("format", "json"),
-        rotation_max_bytes=log_cfg.get("rotation_max_bytes", 104857600),
-        rotation_backup_count=log_cfg.get("rotation_backup_count", 10),
-    )
-
-    model_version = get_model_version()
-    logger.info(
-        "Task worker starting. Will process up to %d task(s). Model version: %s",
-        args.tasks,
-        model_version,
-    )
-
-    api = ApiClient(base_url=args.api_url)
-    total_attempted = 0
-    total_succeeded = 0
-    total_failed = 0
-
-    try:
-        for i in range(1, args.tasks + 1):
-            if _shutdown_requested:
-                logger.info("Shutdown requested after %d/%d tasks", i - 1, args.tasks)
-                break
-
-            logger.info("=== Processing task %d/%d ===", i, args.tasks)
-
-            # 1. Claim a task
-            response = api.get_next_task("AISCAN")
-            if response is None:
-                logger.info("No more tasks available (API returned no task)")
-                break
-
-            task_id = response["task"]["id"]
-            assign_key = response["assign_key"]
-            video_id = response["task"]["video_id"]
-            total_attempted += 1
-
-            logger.info(
-                "Claiming task %d (video_id=%d) for AISCAN", task_id, video_id
-            )
-
-            # 2. Fetch video metadata
-            try:
-                video = api.get_video(video_id)
-            except ApiError as exc:
-                logger.error("Failed to fetch video %d via API: %s", video_id, exc)
-                total_failed += 1
-                continue
-
-            # 3. Process the video (AI pipeline)
-            results = process_video(video, config=config)
-
-            if results["status"] == "COMPLETED":
-                logger.info(
-                    "Video %d complete: C=%.4f routing=%s faces=%d frames=%d time=%.1fs",
-                    video_id,
-                    results.get("confidence", 0),
-                    results.get("routing_decision", "?"),
-                    results.get("face_count", 0),
-                    results.get("frame_count", 0),
-                    results.get("processing_time_seconds", 0),
-                )
-                total_succeeded += 1
-            else:
-                logger.warning(
-                    "Video %d failed: %s",
-                    video_id,
-                    results.get("error", "unknown error"),
-                )
-                total_failed += 1
-
-            # 4. Submit results via API
-            try:
-                api.submit_results(task_id, assign_key, results)
-                logger.info("Submitted results for task %d via API", task_id)
-            except ApiError as exc:
-                logger.error(
-                    "Failed to submit results for task %d: %s", task_id, exc
-                )
-
-    finally:
-        api.close()
-
-    logger.info(
-        "Task worker finished: %d attempted, %d succeeded, %d failed",
-        total_attempted,
-        total_succeeded,
-        total_failed,
-    )
-    return 0
-
-
-if __name__ == "__main__":
-    sys.exit(main())

ui/requirements.txt

@@ -1,4 +1,4 @@
 Flask==3.0.0
 gunicorn==21.2.0
-PyMySQL==1.1.0
 Jinja2==3.1.2
+requests>=2.28.0

worker/Dockerfile

@@ -1,68 +0,0 @@
-# Base image: CUDA 11.8 runtime on Ubuntu 22.04
-FROM nvidia/cuda:11.8.0-runtime-ubuntu22.04
-
-# Avoid interactive prompts during build
-ENV DEBIAN_FRONTEND=noninteractive
-ENV TZ=Etc/UTC
-
-# System dependencies
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    # Python
-    python3.10 \
-    python3.10-dev \
-    python3.10-venv \
-    python3-pip \
-    # FFmpeg
-    ffmpeg \
-    # OpenCV dependencies
-    libgl1-mesa-glx \
-    libglib2.0-0 \
-    libsm6 \
-    libxext6 \
-    libxrender-dev \
-    # Utilities
-    curl \
-    wget \
-    git \
-    ca-certificates \
-    && rm -rf /var/lib/apt/lists/*
-
-# Create non-root user
-RUN groupadd -g 1000 appuser && \
-    useradd -m -u 1000 -g appuser -s /bin/bash appuser
-
-# Set working directory
-WORKDIR /app
-
-# Create necessary directories
-RUN mkdir -p /scratch /models /data/training /data/output /logs && \
-    chown -R appuser:appuser /app /scratch /models /data /logs
-
-# Copy requirements first for better caching
-COPY worker/requirements.txt /app/requirements.txt
-
-# Create and activate virtual environment
-RUN python3.10 -m venv /opt/venv
-ENV PATH="/opt/venv/bin:$PATH"
-
-# Install Python dependencies
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy application code
-COPY src/ /app/src/
-COPY config.yaml /app/config.yaml
-
-# Set environment variables
-ENV PYTHONUNBUFFERED=1
-ENV PATH="/opt/venv/bin:$PATH"
-ENV LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH
-
-# Health check
-HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
-    CMD python3 -c "import torch; assert torch.cuda.is_available()" || exit 1
-
-# Switch to non-root user
-USER appuser
-
-# Default command: process tasks from the API until drained
-CMD ["python3", "-m", "src.task_worker"]

worker/docker-compose.yml

@@ -1,40 +0,0 @@
-# VideoDetect — Worker service (standalone compose file)
-# Run: docker compose -f worker/docker-compose.yml up -d
-
-services:
-  worker:
-    build:
-      context: ./
-      dockerfile: Dockerfile
-    container_name: videodetect-worker
-    restart: "no"
-    environment:
-      - API_BASE_URL=${API_BASE_URL:-http://videodetect-api:3000}
-      - TASK_COUNT=${TASK_COUNT:-50}
-      - REVIEW_CONFIDENCE=${REVIEW_CONFIDENCE:-0.75}
-      - LOG_FILE=/logs/videodetect.log
-    volumes:
-      - nas_input:/data/input:ro
-      - scratch_data:/scratch
-      - $PWD/worker-logs:/logs
-    networks:
-      - videodetect_videodetect-network
-    deploy:
-      resources:
-        limits:
-          memory: 4G
-          nvidia-gpus: "1"
-
-volumes:
-  nas_input:
-    driver: local
-    driver_opts:
-      type: nfs
-      o: addr=10.0.0.2,ro,nfsvers=4,hard,intr
-      device: ":/mnt/Bulk/Homes/ryan/Prawns"
-  scratch_data:
-    driver: local
-
-networks:
-  videodetect_videodetect-network:
-    external: true

worker/requirements.txt

@@ -1,40 +0,0 @@
-# Core ML Frameworks
-torch==2.1.0
---extra-index-url https://download.pytorch.org/whl/cu118
-
-# TensorRT (compatible with CUDA 11.8)
-# Note: Install from NVIDIA repo or wheel for your specific platform
-# tensorrt==8.6.1  # Uncomment after verifying compatibility
-
-# ONNX Runtime with GPU support
-onnxruntime-gpu==1.16.3
-
-# Computer Vision
-opencv-python-headless==4.8.1.78
-Pillow==10.1.0
-
-# Database
-PyMySQL==1.1.0
-DBUtils==3.1.0
-
-# Data Processing
-numpy==1.24.4
-pandas==2.1.4
-pyarrow==14.0.0
-
-# Configuration
-pyyaml==6.0.1
-
-# Logging
-python-json-logger==2.0.7
-
-# Monitoring
-prometheus-client==0.19.0
-
-# Utilities
-tqdm==4.66.1
-filelock==3.13.1
-
-# Testing (dev dependencies - install with [dev] extra)
-# pytest==7.4.3
-# pytest-cov==4.1.0