v1.0 - Version stable: multi-PC, détection UI-DETR-1, 3 modes exécution
- Frontend v4 accessible sur réseau local (192.168.1.40) - Ports ouverts: 3002 (frontend), 5001 (backend), 5004 (dashboard) - Ollama GPU fonctionnel - Self-healing interactif - Dashboard confiance Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Dom
187
demarrer_backend_propre.py
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187
demarrer_backend_propre.py
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#!/usr/bin/env python3
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"""
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Script de démarrage propre du backend VWB
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Auteur : Dom, Alice, Kiro - 8 janvier 2026
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"""
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import os
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import sys
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import subprocess
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import time
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import signal
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import psutil
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def nettoyer_processus_backend():
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"""Nettoyer tous les processus backend existants"""
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print("🧹 Nettoyage des processus backend existants...")
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processus_tues = 0
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for proc in psutil.process_iter(['pid', 'name', 'cmdline']):
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try:
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cmdline = ' '.join(proc.info['cmdline'] or [])
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if any(pattern in cmdline for pattern in [
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'visual_workflow_builder/backend/app.py',
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'web_dashboard/app.py',
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'flask',
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':5001',
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':5002'
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]):
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print(f" 🔪 Arrêt du processus PID {proc.info['pid']}: {proc.info['name']}")
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proc.terminate()
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processus_tues += 1
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except (psutil.NoSuchProcess, psutil.AccessDenied):
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continue
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if processus_tues > 0:
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print(f" ✅ {processus_tues} processus arrêtés")
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time.sleep(3) # Attendre que les processus se terminent proprement
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else:
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print(" ℹ️ Aucun processus backend trouvé")
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def verifier_port_libre(port):
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"""Vérifier si un port est libre"""
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import socket
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
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try:
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s.bind(('localhost', port))
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return True
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except OSError:
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return False
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def demarrer_backend():
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"""Démarrer le backend VWB proprement"""
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print("🚀 Démarrage du backend VWB...")
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# Vérifier que le port 5002 est libre
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if not verifier_port_libre(5002):
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print("❌ Le port 5002 est occupé")
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return None
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# Variables d'environnement propres
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env = os.environ.copy()
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env.update({
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'PORT': '5002',
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'FLASK_ENV': 'development',
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'FLASK_DEBUG': '1',
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'PYTHONPATH': '.',
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})
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# Supprimer les variables qui pourraient causer des conflits
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for var in ['FLASK_APP', 'FLASK_RUN_PORT', 'FLASK_RUN_HOST']:
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env.pop(var, None)
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# Commande de démarrage
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cmd = [
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'./venv_v3/bin/python',
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'visual_workflow_builder/backend/app.py'
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]
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try:
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print(f" 📝 Commande: {' '.join(cmd)}")
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print(f" 🔧 Port: 5002")
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print(f" 🌍 Environnement: development")
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# Démarrer le processus
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process = subprocess.Popen(
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cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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env=env,
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cwd='.',
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bufsize=1,
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universal_newlines=True
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)
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print(f" 🆔 PID: {process.pid}")
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# Surveiller le démarrage
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print(" ⏳ Surveillance du démarrage...")
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for i in range(30): # 30 secondes max
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# Vérifier si le processus est encore vivant
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if process.poll() is not None:
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stdout, stderr = process.communicate()
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print(f" ❌ Le processus s'est arrêté prématurément")
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print(f" 📝 Sortie: {stdout}")
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return None
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# Lire la sortie
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try:
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line = process.stdout.readline()
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if line:
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print(f" 📄 {line.strip()}")
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# Vérifier les indicateurs de succès
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if any(indicator in line.lower() for indicator in [
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'running on',
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'serving flask app',
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'debug mode: on'
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]):
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print(f" ✅ Backend démarré avec succès !")
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return process
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# Vérifier les erreurs
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if any(error in line.lower() for error in [
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'error',
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'failed',
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'exception',
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'address already in use'
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]):
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print(f" ❌ Erreur détectée: {line.strip()}")
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process.terminate()
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return None
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except:
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pass
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time.sleep(1)
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print(" ⚠️ Timeout atteint, mais le processus semble fonctionner")
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return process
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except Exception as e:
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print(f" ❌ Erreur lors du démarrage: {e}")
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return None
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def main():
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"""Fonction principale"""
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print("🏥 DÉMARRAGE PROPRE DU BACKEND VWB")
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print("=" * 50)
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try:
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# Étape 1: Nettoyer les processus existants
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nettoyer_processus_backend()
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# Étape 2: Démarrer le backend
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process = demarrer_backend()
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if process:
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print("\n✅ Backend démarré avec succès !")
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print(f"🔗 URL: http://localhost:5002")
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print(f"🆔 PID: {process.pid}")
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print("\n📋 Commandes utiles:")
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print(f" • Tester: python3 visual_workflow_builder/quick_api_test.py")
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print(f" • Arrêter: kill {process.pid}")
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print("\n⌨️ Appuyez sur Ctrl+C pour arrêter le serveur")
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# Attendre l'interruption
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try:
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process.wait()
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except KeyboardInterrupt:
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print("\n🛑 Arrêt demandé par l'utilisateur")
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process.terminate()
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process.wait()
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print("✅ Backend arrêté proprement")
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else:
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print("\n❌ Échec du démarrage du backend")
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return 1
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except Exception as e:
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print(f"\n💥 Erreur critique: {e}")
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return 2
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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