From cf297e8e160f6ce71488e4d219bc6958b9bf6008 Mon Sep 17 00:00:00 2001 From: Till Tomczak Date: Thu, 29 May 2025 19:00:12 +0200 Subject: [PATCH] "Add database backup schedule for 2025-05-29 18:58:34" --- backend/app/app.py | 81 +++ backend/app/database/myp.db | Bin 106496 -> 106496 bytes backend/app/database/myp.db-shm | Bin 32768 -> 32768 bytes backend/app/database/myp.db-wal | Bin 12392 -> 4152 bytes .../database/myp.db.backup_20250529_185834 | Bin 0 -> 106496 bytes backend/app/models.py | 40 +- .../app/utils/database_schema_migration.py | 609 +++++++----------- 7 files changed, 335 insertions(+), 395 deletions(-) create mode 100644 backend/app/database/myp.db.backup_20250529_185834 diff --git a/backend/app/app.py b/backend/app/app.py index 7ad27e65e..9a0e34b00 100644 --- a/backend/app/app.py +++ b/backend/app/app.py @@ -4361,6 +4361,87 @@ def export_admin_logs(): "message": f"Fehler beim Exportieren: {str(e)}" }), 500 +@app.route('/api/logs', methods=['GET']) +@login_required +def get_system_logs(): + """API-Endpunkt zum Laden der System-Logs für das Dashboard.""" + if not current_user.is_admin: + return jsonify({"success": False, "error": "Berechtigung verweigert"}), 403 + + try: + import os + from datetime import datetime + + log_level = request.args.get('log_level', 'all') + log_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'logs') + + # Logeinträge sammeln + app_logs = [] + for category in ['app', 'auth', 'jobs', 'printers', 'scheduler', 'errors']: + log_file = os.path.join(log_dir, category, f'{category}.log') + if os.path.exists(log_file): + try: + with open(log_file, 'r', encoding='utf-8') as f: + lines = f.readlines() + # Nur die letzten 100 Zeilen pro Datei + for line in lines[-100:]: + line = line.strip() + if not line: + continue + + # Log-Level-Filter anwenden + if log_level != 'all': + if log_level.upper() not in line: + continue + + # Log-Eintrag parsen + parts = line.split(' - ') + if len(parts) >= 3: + timestamp = parts[0] + level = parts[1] + message = ' - '.join(parts[2:]) + else: + timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S') + level = 'INFO' + message = line + + app_logs.append({ + 'timestamp': timestamp, + 'level': level, + 'category': category, + 'module': category, + 'message': message, + 'source': category + }) + except Exception as file_error: + app_logger.warning(f"Fehler beim Lesen der Log-Datei {log_file}: {str(file_error)}") + continue + + # Nach Zeitstempel sortieren (neueste zuerst) + try: + logs = sorted(app_logs, key=lambda x: x['timestamp'] if x['timestamp'] else '', reverse=True)[:100] + except: + # Falls Sortierung fehlschlägt, einfach die letzten 100 nehmen + logs = app_logs[-100:] + + app_logger.info(f"Logs erfolgreich geladen: {len(logs)} Einträge") + + return jsonify({ + "success": True, + "logs": logs, + "count": len(logs), + "message": f"{len(logs)} Log-Einträge geladen" + }) + + except Exception as e: + app_logger.error(f"Fehler beim Laden der Logs: {str(e)}") + return jsonify({ + "success": False, + "error": "Fehler beim Laden der Logs", + "message": str(e), + "logs": [] + }), 500 + # ===== ENDE FEHLENDE ADMIN-API-ENDPUNKTE ===== # ===== BENACHRICHTIGUNGS-API-ENDPUNKTE ===== diff --git a/backend/app/database/myp.db b/backend/app/database/myp.db index d5851f7fda6f6b7310dc64ad64da4c7e2219238a..32ea88ad552e98e588198650d9aa1bd9e33393d9 100644 GIT binary patch delta 86 zcmZoTz}9epZ9}WPX+gS|k6%TZTYg%4K}uP%Ygw9GXuiLBuycUErLmEhxsidJk5Oo( pQGR%4T2*ebx2wNTSmNYe@>V>iMph=~dX}bUh6V;r3dtM`&1;yN78? ppk;EVMVY^QM2b;fu=nI$@>V=1=2j+VdPatpmL{f63dLzLHCga1A_nq2)w+Z{)P3>y3mt+xBpyQTDlA<#011rFmaaclhxkd z@t5BmAkfNhn(CHaTAo)}8s=k~>F-vR6jA2nTv(bB;_Bm3X{7I4Ft~x e;+0ntmTQ#iWj2{h!J6CB%E&^`#L&#p*a!e4V=g-Y delta 559 zcmdm?@FKy&yq>LzLHCga1A_nq2$UajID2aIot8!F$Gh&m3Hk{XVgh0*n7Ci+ev^57 z7oXf{(aLY?l@eGQ;Fj)G=4tGg?desJZ|WB2TWaF%Twz`o?3kPD=xdtlTArEc8fcgk zl470}>J{SVJ^2&AwX&g=iG`ktk%6I^F}e+5myh1^j1;y7+fb11<>OaT=9Zt9UXW5& 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Incremental Vacuum - session.execute(text("PRAGMA incremental_vacuum")) - - session.commit() - logger.info("Datenbank-Wartung erfolgreich durchgeführt") - except Exception as e: - logger.error(f"Fehler bei Datenbank-Wartung: {str(e)}") - + while True: + try: + with get_maintenance_session() as session: + # WAL-Checkpoint ausführen (aggressive Strategie) + checkpoint_result = session.execute(text("PRAGMA wal_checkpoint(TRUNCATE)")).fetchone() + + # Nur loggen wenn tatsächlich Daten übertragen wurden + if checkpoint_result and checkpoint_result[1] > 0: + logger.info(f"WAL-Checkpoint: {checkpoint_result[1]} Seiten übertragen, {checkpoint_result[2]} Seiten zurückgesetzt") + + # Statistiken aktualisieren (alle 30 Minuten) + session.execute(text("ANALYZE")) + + # Incremental Vacuum (alle 60 Minuten) + session.execute(text("PRAGMA incremental_vacuum")) + + session.commit() + + except Exception as e: + logger.error(f"Fehler bei Datenbank-Wartung: {str(e)}") + + # Warte 30 Minuten bis zur nächsten Wartung + time.sleep(1800) + # Wartung in separatem Thread ausführen maintenance_thread = threading.Thread(target=maintenance_worker, daemon=True) maintenance_thread.start() diff --git a/backend/app/utils/database_schema_migration.py b/backend/app/utils/database_schema_migration.py index 6baeb6c91..642c5f721 100644 --- a/backend/app/utils/database_schema_migration.py +++ b/backend/app/utils/database_schema_migration.py @@ -1,14 +1,17 @@ #!/usr/bin/env python3 """ -Umfassendes Datenbank-Schema-Migrationsskript -Erkennt und fügt alle fehlenden Spalten basierend auf den Models hinzu. +Optimiertes Datenbank-Schema-Migrationsskript +Mit WAL-Checkpoint und ordnungsgemäßer Ressourcenverwaltung """ import os import sys import sqlite3 +import signal +import time from datetime import datetime import logging +from contextlib import contextmanager # Pfad zur App hinzufügen - KORRIGIERT app_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) @@ -32,408 +35,256 @@ except ImportError: logging.basicConfig(level=logging.INFO) logger = logging.getLogger("schema_migration") -def get_table_columns(cursor, table_name): - """Ermittelt alle Spalten einer Tabelle.""" - cursor.execute(f"PRAGMA table_info({table_name})") - return {row[1]: row[2] for row in cursor.fetchall()} # {column_name: column_type} +# Globale Variable für sauberes Shutdown +_migration_running = False +_current_connection = None -def get_table_exists(cursor, table_name): - """Prüft, ob eine Tabelle existiert.""" - cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name=?", (table_name,)) - return cursor.fetchone() is not None - -def migrate_users_table(cursor): - """Migriert die users Tabelle für fehlende Spalten.""" - logger.info("Migriere users Tabelle...") +def signal_handler(signum, frame): + """Signal-Handler für ordnungsgemäßes Shutdown""" + global _migration_running, _current_connection + print(f"\n🛑 Signal {signum} empfangen - beende Migration sauber...") + _migration_running = False - if not get_table_exists(cursor, 'users'): - logger.warning("users Tabelle existiert nicht - wird bei init_db erstellt") - return False - - existing_columns = get_table_columns(cursor, 'users') - - # Definition der erwarteten Spalten - required_columns = { - 'id': 'INTEGER PRIMARY KEY', - 'email': 'VARCHAR(120) UNIQUE NOT NULL', - 'username': 'VARCHAR(100) UNIQUE NOT NULL', - 'password_hash': 'VARCHAR(128) NOT NULL', - 'name': 'VARCHAR(100) NOT NULL', - 'role': 'VARCHAR(20) DEFAULT "user"', - 'active': 'BOOLEAN DEFAULT 1', - 'created_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'last_login': 'DATETIME', - 'updated_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'settings': 'TEXT', - 'department': 'VARCHAR(100)', - 'position': 'VARCHAR(100)', - 'phone': 'VARCHAR(50)', - 'bio': 'TEXT' - } - - migrations_performed = [] - - for column_name, column_def in required_columns.items(): - if column_name not in existing_columns: - try: - # Spezielle Behandlung für updated_at mit Trigger - if column_name == 'updated_at': - cursor.execute(f"ALTER TABLE users ADD COLUMN {column_name} DATETIME DEFAULT CURRENT_TIMESTAMP") - # Trigger für automatische Aktualisierung - cursor.execute(""" - CREATE TRIGGER IF NOT EXISTS update_users_updated_at - AFTER UPDATE ON users - BEGIN - UPDATE users SET updated_at = CURRENT_TIMESTAMP WHERE id = NEW.id; - END - """) - logger.info(f"Spalte '{column_name}' hinzugefügt mit Auto-Update-Trigger") - else: - cursor.execute(f"ALTER TABLE users ADD COLUMN {column_name} {column_def}") - logger.info(f"Spalte '{column_name}' hinzugefügt") - - migrations_performed.append(column_name) - except Exception as e: - logger.error(f"Fehler beim Hinzufügen der Spalte '{column_name}': {str(e)}") - - return len(migrations_performed) > 0 - -def migrate_printers_table(cursor): - """Migriert die printers Tabelle für fehlende Spalten.""" - logger.info("Migriere printers Tabelle...") - - if not get_table_exists(cursor, 'printers'): - logger.warning("printers Tabelle existiert nicht - wird bei init_db erstellt") - return False - - existing_columns = get_table_columns(cursor, 'printers') - - required_columns = { - 'id': 'INTEGER PRIMARY KEY', - 'name': 'VARCHAR(100) NOT NULL', - 'model': 'VARCHAR(100)', - 'location': 'VARCHAR(100)', - 'ip_address': 'VARCHAR(50)', - 'mac_address': 'VARCHAR(50) NOT NULL UNIQUE', - 'plug_ip': 'VARCHAR(50) NOT NULL', - 'plug_username': 'VARCHAR(100) NOT NULL', - 'plug_password': 'VARCHAR(100) NOT NULL', - 'status': 'VARCHAR(20) DEFAULT "offline"', - 'active': 'BOOLEAN DEFAULT 1', - 'created_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'last_checked': 'DATETIME' - } - - migrations_performed = [] - - for column_name, column_def in required_columns.items(): - if column_name not in existing_columns: - try: - cursor.execute(f"ALTER TABLE printers ADD COLUMN {column_name} {column_def}") - logger.info(f"Spalte '{column_name}' zu printers hinzugefügt") - migrations_performed.append(column_name) - except Exception as e: - logger.error(f"Fehler beim Hinzufügen der Spalte '{column_name}' zu printers: {str(e)}") - - return len(migrations_performed) > 0 - -def migrate_jobs_table(cursor): - """Migriert die jobs Tabelle für fehlende Spalten.""" - logger.info("Migriere jobs Tabelle...") - - if not get_table_exists(cursor, 'jobs'): - logger.warning("jobs Tabelle existiert nicht - wird bei init_db erstellt") - return False - - existing_columns = get_table_columns(cursor, 'jobs') - - required_columns = { - 'id': 'INTEGER PRIMARY KEY', - 'name': 'VARCHAR(200) NOT NULL', - 'description': 'VARCHAR(500)', - 'user_id': 'INTEGER NOT NULL', - 'printer_id': 'INTEGER NOT NULL', - 'start_at': 'DATETIME', - 'end_at': 'DATETIME', - 'actual_end_time': 'DATETIME', - 'status': 'VARCHAR(20) DEFAULT "scheduled"', - 'created_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'notes': 'VARCHAR(500)', - 'material_used': 'FLOAT', - 'file_path': 'VARCHAR(500)', - 'owner_id': 'INTEGER', - 'duration_minutes': 'INTEGER NOT NULL' - } - - migrations_performed = [] - - for column_name, column_def in required_columns.items(): - if column_name not in existing_columns: - try: - cursor.execute(f"ALTER TABLE jobs ADD COLUMN {column_name} {column_def}") - logger.info(f"Spalte '{column_name}' zu jobs hinzugefügt") - migrations_performed.append(column_name) - except Exception as e: - logger.error(f"Fehler beim Hinzufügen der Spalte '{column_name}' zu jobs: {str(e)}") - - return len(migrations_performed) > 0 - -def migrate_guest_requests_table(cursor): - """Migriert die guest_requests Tabelle für fehlende Spalten.""" - logger.info("Migriere guest_requests Tabelle...") - - if not get_table_exists(cursor, 'guest_requests'): - logger.warning("guest_requests Tabelle existiert nicht - wird bei init_db erstellt") - return False - - existing_columns = get_table_columns(cursor, 'guest_requests') - - # Vollständige Definition aller erwarteten Spalten basierend auf dem GuestRequest Modell - required_columns = { - 'id': 'INTEGER PRIMARY KEY', - 'name': 'VARCHAR(100) NOT NULL', - 'email': 'VARCHAR(120)', - 'reason': 'TEXT', - 'duration_min': 'INTEGER', # Bestehende Spalte für Backward-Kompatibilität - 'duration_minutes': 'INTEGER', # Neue Spalte für API-Kompatibilität - HIER IST DAS PROBLEM! - 'created_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'status': 'VARCHAR(20) DEFAULT "pending"', - 'printer_id': 'INTEGER', - 'otp_code': 'VARCHAR(100)', - 'job_id': 'INTEGER', - 'author_ip': 'VARCHAR(50)', - 'otp_used_at': 'DATETIME', - 'file_name': 'VARCHAR(255)', - 'file_path': 'VARCHAR(500)', - 'copies': 'INTEGER DEFAULT 1', - 'processed_by': 'INTEGER', - 'processed_at': 'DATETIME', - 'approval_notes': 'TEXT', - 'rejection_reason': 'TEXT', - 'updated_at': 'DATETIME DEFAULT CURRENT_TIMESTAMP', - 'approved_at': 'DATETIME', - 'rejected_at': 'DATETIME', - 'approved_by': 'INTEGER', - 'rejected_by': 'INTEGER', - 'otp_expires_at': 'DATETIME', - 'assigned_printer_id': 'INTEGER' - } - - migrations_performed = [] - - for column_name, column_def in required_columns.items(): - if column_name not in existing_columns: - try: - # Spezielle Behandlung für updated_at mit Trigger - if column_name == 'updated_at': - cursor.execute(f"ALTER TABLE guest_requests ADD COLUMN {column_name} {column_def}") - # Trigger für automatische Aktualisierung - cursor.execute(""" - CREATE TRIGGER IF NOT EXISTS update_guest_requests_updated_at - AFTER UPDATE ON guest_requests - BEGIN - UPDATE guest_requests SET updated_at = CURRENT_TIMESTAMP WHERE id = NEW.id; - END - """) - logger.info(f"Spalte '{column_name}' zu guest_requests hinzugefügt mit Auto-Update-Trigger") - else: - cursor.execute(f"ALTER TABLE guest_requests ADD COLUMN {column_name} {column_def}") - logger.info(f"Spalte '{column_name}' zu guest_requests hinzugefügt") - - migrations_performed.append(column_name) - except Exception as e: - logger.error(f"Fehler beim Hinzufügen der Spalte '{column_name}' zu guest_requests: {str(e)}") - - # Wenn duration_minutes hinzugefügt wurde, kopiere Werte von duration_min - if 'duration_minutes' in migrations_performed: + if _current_connection: try: - cursor.execute("UPDATE guest_requests SET duration_minutes = duration_min WHERE duration_minutes IS NULL") - logger.info("Werte von duration_min zu duration_minutes kopiert") + print("🔄 Führe WAL-Checkpoint durch...") + _current_connection.execute("PRAGMA wal_checkpoint(TRUNCATE)") + _current_connection.commit() + _current_connection.close() + print("✅ Datenbank ordnungsgemäß geschlossen") except Exception as e: - logger.error(f"Fehler beim Kopieren der duration_min Werte: {str(e)}") + print(f"⚠️ Fehler beim Schließen: {e}") - return len(migrations_performed) > 0 + print("🏁 Migration beendet") + sys.exit(0) -def create_missing_tables(cursor): - """Erstellt fehlende Tabellen.""" - logger.info("Prüfe auf fehlende Tabellen...") - - # user_permissions Tabelle - if not get_table_exists(cursor, 'user_permissions'): - cursor.execute(""" - CREATE TABLE user_permissions ( - user_id INTEGER PRIMARY KEY, - can_start_jobs BOOLEAN DEFAULT 0, - needs_approval BOOLEAN DEFAULT 1, - can_approve_jobs BOOLEAN DEFAULT 0, - FOREIGN KEY (user_id) REFERENCES users (id) - ) - """) - logger.info("Tabelle 'user_permissions' erstellt") - - # notifications Tabelle - if not get_table_exists(cursor, 'notifications'): - cursor.execute(""" - CREATE TABLE notifications ( - id INTEGER PRIMARY KEY, - user_id INTEGER NOT NULL, - type VARCHAR(50) NOT NULL, - payload TEXT, - created_at DATETIME DEFAULT CURRENT_TIMESTAMP, - read BOOLEAN DEFAULT 0, - FOREIGN KEY (user_id) REFERENCES users (id) - ) - """) - logger.info("Tabelle 'notifications' erstellt") - - # stats Tabelle - if not get_table_exists(cursor, 'stats'): - cursor.execute(""" - CREATE TABLE stats ( - id INTEGER PRIMARY KEY, - total_print_time INTEGER DEFAULT 0, - total_jobs_completed INTEGER DEFAULT 0, - total_material_used FLOAT DEFAULT 0.0, - last_updated DATETIME DEFAULT CURRENT_TIMESTAMP - ) - """) - logger.info("Tabelle 'stats' erstellt") - - # system_logs Tabelle - if not get_table_exists(cursor, 'system_logs'): - cursor.execute(""" - CREATE TABLE system_logs ( - id INTEGER PRIMARY KEY, - timestamp DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, - level VARCHAR(20) NOT NULL, - message VARCHAR(1000) NOT NULL, - module VARCHAR(100), - user_id INTEGER, - ip_address VARCHAR(50), - user_agent VARCHAR(500), - FOREIGN KEY (user_id) REFERENCES users (id) - ) - """) - logger.info("Tabelle 'system_logs' erstellt") +# Signal-Handler registrieren +signal.signal(signal.SIGINT, signal_handler) +signal.signal(signal.SIGTERM, signal_handler) -def optimize_database(cursor): - """Führt Datenbankoptimierungen durch.""" - logger.info("Führe Datenbankoptimierungen durch...") +@contextmanager +def get_database_connection(timeout=30): + """Context Manager für sichere Datenbankverbindung mit WAL-Optimierung""" + global _current_connection + conn = None try: - # Indices für bessere Performance - cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_email ON users(email)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_username ON users(username)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_jobs_user_id ON jobs(user_id)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_jobs_printer_id ON jobs(printer_id)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_jobs_status ON jobs(status)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_notifications_user_id ON notifications(user_id)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_system_logs_timestamp ON system_logs(timestamp)") - cursor.execute("CREATE INDEX IF NOT EXISTS idx_guest_requests_status ON guest_requests(status)") + # Verbindung mit optimierten Einstellungen + conn = sqlite3.connect( + DATABASE_PATH, + timeout=timeout, + isolation_level=None # Autocommit aus für manuelle Transaktionen + ) + _current_connection = conn - # Statistiken aktualisieren - cursor.execute("ANALYZE") + # WAL-Modus und Optimierungen + conn.execute("PRAGMA journal_mode=WAL") + conn.execute("PRAGMA synchronous=NORMAL") # Bessere Performance mit WAL + conn.execute("PRAGMA foreign_keys=ON") + conn.execute("PRAGMA busy_timeout=30000") # 30 Sekunden Timeout + conn.execute("PRAGMA wal_autocheckpoint=1000") # Automatischer Checkpoint alle 1000 Seiten - logger.info("Datenbankoptimierungen abgeschlossen") + logger.info("Datenbankverbindung mit WAL-Optimierungen hergestellt") + yield conn except Exception as e: - logger.error(f"Fehler bei Datenbankoptimierungen: {str(e)}") + logger.error(f"Datenbankverbindungsfehler: {e}") + if conn: + conn.rollback() + raise + finally: + if conn: + try: + # Kritisch: WAL-Checkpoint vor dem Schließen + logger.info("Führe finalen WAL-Checkpoint durch...") + conn.execute("PRAGMA wal_checkpoint(TRUNCATE)") + conn.commit() + + # Prüfe WAL-Status + wal_info = conn.execute("PRAGMA wal_checkpoint").fetchone() + if wal_info: + logger.info(f"WAL-Checkpoint: {wal_info[0]} Seiten übertragen, {wal_info[1]} Seiten zurückgesetzt") + + conn.close() + logger.info("Datenbankverbindung ordnungsgemäß geschlossen") + + except Exception as e: + logger.error(f"Fehler beim Schließen der Datenbankverbindung: {e}") + finally: + _current_connection = None + +def force_wal_checkpoint(): + """Erzwingt WAL-Checkpoint um alle Daten in die Hauptdatei zu schreiben""" + try: + with get_database_connection(timeout=10) as conn: + # Aggressive WAL-Checkpoint-Strategien + strategies = [ + ("TRUNCATE", "Vollständiger Checkpoint mit WAL-Truncate"), + ("RESTART", "Checkpoint mit WAL-Restart"), + ("FULL", "Vollständiger Checkpoint") + ] + + for strategy, description in strategies: + try: + result = conn.execute(f"PRAGMA wal_checkpoint({strategy})").fetchone() + if result and result[0] == 0: # Erfolg + logger.info(f"✅ {description} erfolgreich: {result}") + return True + else: + logger.warning(f"⚠️ {description} teilweise erfolgreich: {result}") + except Exception as e: + logger.warning(f"⚠️ {description} fehlgeschlagen: {e}") + continue + + # Fallback: VACUUM für komplette Reorganisation + logger.info("Führe VACUUM als Fallback durch...") + conn.execute("VACUUM") + logger.info("✅ VACUUM erfolgreich") + return True + + except Exception as e: + logger.error(f"Kritischer Fehler bei WAL-Checkpoint: {e}") + return False + +def optimize_migration_performance(): + """Optimiert die Datenbank für die Migration""" + try: + with get_database_connection(timeout=5) as conn: + # Performance-Optimierungen für Migration + optimizations = [ + ("PRAGMA cache_size = -64000", "Cache-Größe auf 64MB erhöht"), + ("PRAGMA temp_store = MEMORY", "Temp-Store in Memory"), + ("PRAGMA mmap_size = 268435456", "Memory-Mapped I/O aktiviert"), + ("PRAGMA optimize", "Automatische Optimierungen") + ] + + for pragma, description in optimizations: + try: + conn.execute(pragma) + logger.info(f"✅ {description}") + except Exception as e: + logger.warning(f"⚠️ Optimierung fehlgeschlagen ({description}): {e}") + + except Exception as e: + logger.warning(f"Fehler bei Performance-Optimierung: {e}") def main(): - """Führt die komplette Schema-Migration aus.""" + """Führt die optimierte Schema-Migration aus.""" + global _migration_running + _migration_running = True + try: - logger.info("Starte umfassende Datenbank-Schema-Migration...") + logger.info("🚀 Starte optimierte Datenbank-Schema-Migration...") - # Verbindung zur Datenbank + # Überprüfe Datenbankdatei if not os.path.exists(DATABASE_PATH): - logger.error(f"Datenbankdatei nicht gefunden: {DATABASE_PATH}") - # Erste Initialisierung - from models import init_database - logger.info("Führe Erstinitialisierung durch...") - init_database() - logger.info("Erstinitialisierung abgeschlossen") - return + logger.error(f"❌ Datenbankdatei nicht gefunden: {DATABASE_PATH}") + return False - conn = sqlite3.connect(DATABASE_PATH) - cursor = conn.cursor() + # Initial WAL-Checkpoint um sauberen Zustand sicherzustellen + logger.info("🔄 Führe initialen WAL-Checkpoint durch...") + force_wal_checkpoint() - # WAL-Modus aktivieren für bessere Concurrent-Performance - cursor.execute("PRAGMA journal_mode=WAL") - cursor.execute("PRAGMA foreign_keys=ON") + # Performance-Optimierungen + optimize_migration_performance() - logger.info(f"Verbunden mit Datenbank: {DATABASE_PATH}") - - # Backup erstellen - backup_path = f"{DATABASE_PATH}.backup_{datetime.now().strftime('%Y%m%d_%H%M%S')}" - cursor.execute(f"VACUUM INTO '{backup_path}'") - logger.info(f"Backup erstellt: {backup_path}") - - # Migrationen durchführen - migrations_performed = [] - - # Fehlende Tabellen erstellen - create_missing_tables(cursor) - migrations_performed.append("missing_tables") - - # Tabellen-spezifische Migrationen - if migrate_users_table(cursor): - migrations_performed.append("users") - - if migrate_printers_table(cursor): - migrations_performed.append("printers") - - if migrate_jobs_table(cursor): - migrations_performed.append("jobs") - - if migrate_guest_requests_table(cursor): - migrations_performed.append("guest_requests") - - # Optimierungen - optimize_database(cursor) - migrations_performed.append("optimizations") - - # Änderungen speichern - conn.commit() - conn.close() - - logger.info(f"Schema-Migration erfolgreich abgeschlossen. Migrierte Bereiche: {', '.join(migrations_performed)}") - - # Test der Migration - test_migration() - - except Exception as e: - logger.error(f"Fehler bei der Schema-Migration: {str(e)}") - if 'conn' in locals(): - conn.rollback() - conn.close() - sys.exit(1) - -def test_migration(): - """Testet die Migration durch Laden der Models.""" - try: - logger.info("Teste Migration durch Laden der Models...") - - # Models importieren und testen - from models import get_cached_session, User, Printer, Job - - with get_cached_session() as session: - # Test User-Query (sollte das updated_at Problem lösen) - users = session.query(User).limit(1).all() - logger.info(f"User-Abfrage erfolgreich - {len(users)} Benutzer gefunden") + # Eigentliche Migration mit optimierter Verbindung + with get_database_connection(timeout=60) as conn: + cursor = conn.cursor() - # Test Printer-Query - printers = session.query(Printer).limit(1).all() - logger.info(f"Printer-Abfrage erfolgreich - {len(printers)} Drucker gefunden") + # Backup erstellen (mit Timeout) + backup_path = f"{DATABASE_PATH}.backup_{datetime.now().strftime('%Y%m%d_%H%M%S')}" + try: + logger.info(f"📦 Erstelle Backup: {backup_path}") + cursor.execute(f"VACUUM INTO '{backup_path}'") + logger.info("✅ Backup erfolgreich erstellt") + except Exception as e: + logger.warning(f"⚠️ Backup-Erstellung fehlgeschlagen: {e}") - # Test Job-Query - jobs = session.query(Job).limit(1).all() - logger.info(f"Job-Abfrage erfolgreich - {len(jobs)} Jobs gefunden") + # Migrationen durchführen (verkürzt für bessere Performance) + migrations_performed = [] + + if not _migration_running: + return False + + # Schnelle Schema-Checks + try: + # Test der kritischen Abfrage + cursor.execute("SELECT COUNT(*) FROM guest_requests WHERE duration_minutes IS NOT NULL") + logger.info("✅ Schema-Integritätstest bestanden") + except Exception: + logger.info("🔧 Führe kritische Schema-Reparaturen durch...") + + # Nur die wichtigsten Reparaturen + critical_fixes = [ + ("ALTER TABLE guest_requests ADD COLUMN duration_minutes INTEGER", "duration_minutes zu guest_requests"), + ("ALTER TABLE users ADD COLUMN username VARCHAR(100)", "username zu users"), + ("UPDATE users SET username = email WHERE username IS NULL", "Username-Fallback") + ] + + for sql, description in critical_fixes: + if not _migration_running: + break + try: + cursor.execute(sql) + logger.info(f"✅ {description}") + migrations_performed.append(description) + except sqlite3.OperationalError as e: + if "duplicate column" not in str(e).lower(): + logger.warning(f"⚠️ {description}: {e}") + + # Commit und WAL-Checkpoint zwischen Operationen + if migrations_performed: + conn.commit() + cursor.execute("PRAGMA wal_checkpoint(PASSIVE)") + + # Finale Optimierungen (reduziert) + if _migration_running: + essential_indices = [ + "CREATE INDEX IF NOT EXISTS idx_users_email ON users(email)", + "CREATE INDEX IF NOT EXISTS idx_jobs_status ON jobs(status)", + "CREATE INDEX IF NOT EXISTS idx_guest_requests_status ON guest_requests(status)" + ] + + for index_sql in essential_indices: + try: + cursor.execute(index_sql) + except Exception: + pass # Indices sind nicht kritisch + + # Finale Statistiken + cursor.execute("ANALYZE") + migrations_performed.append("optimizations") + + # Finale Commit + conn.commit() + logger.info(f"✅ Migration abgeschlossen. Bereiche: {', '.join(migrations_performed)}") - logger.info("Migrations-Test erfolgreich abgeschlossen") + # Abschließender WAL-Checkpoint + logger.info("🔄 Führe abschließenden WAL-Checkpoint durch...") + force_wal_checkpoint() + # Kurze Pause um sicherzustellen, dass alle I/O-Operationen abgeschlossen sind + time.sleep(1) + + logger.info("🎉 Optimierte Schema-Migration erfolgreich abgeschlossen!") + return True + + except KeyboardInterrupt: + logger.info("🔄 Migration durch Benutzer unterbrochen") + return False except Exception as e: - logger.error(f"Fehler beim Migrations-Test: {str(e)}") - raise + logger.error(f"❌ Kritischer Fehler bei der Migration: {str(e)}") + return False + finally: + _migration_running = False + # Finale WAL-Bereinigung + try: + force_wal_checkpoint() + except Exception: + pass if __name__ == "__main__": - main() \ No newline at end of file + success = main() + if not success: + sys.exit(1) \ No newline at end of file