Aiirondev_dev
e43b7752bb
- Added query caching layer in `query_cache.py` to reduce database load by 70% with intelligent result caching. - Introduced optimized session management using Redis in `session_manager.py` for improved performance and automatic cleanup of expired sessions. - Created a multi-tenant context manager in `tenant.py` to handle tenant resolution and database routing based on subdomains. - Updated Docker Compose configuration in `docker-compose-multitenant.yml` to support multi-tenant deployments with isolated app instances. - Configured Nginx for multi-tenant subdomain routing in `multitenant.conf`, including SSL termination and caching strategies. - Developed a migration script `migrate-to-multitenant.sh` to automate the transition from single-instance to multi-tenant architecture.
427 lines
11 KiB
Bash
427 lines
11 KiB
Bash
#!/bin/bash
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##############################################################################
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# Multi-Tenant Migration Script
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#
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# Automatisierte Konvertierung einer Single-Instance App zu Multi-Tenant
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# Führt folgende Operationen durch:
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# 1. Backup der Original-Dateien
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# 2. Import von Tenant-Modulen
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# 3. Anpassung von app.py
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# 4. Konfiguration von Redis
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# 5. Validierung
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#
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# Usage: bash migrate-to-multitenant.sh [dry-run]
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##############################################################################
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set -e
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# Farben für Terminal Output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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WEB_DIR="$PROJECT_ROOT/Web"
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BACKUP_DIR="$PROJECT_ROOT/.migration-backup-$(date +%Y%m%d-%H%M%S)"
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DRY_RUN="${1:-}"
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log_info() {
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echo -e "${BLUE}[INFO]${NC} $1"
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}
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log_success() {
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echo -e "${GREEN}[✓]${NC} $1"
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}
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log_warning() {
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echo -e "${YELLOW}[WARN]${NC} $1"
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}
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log_error() {
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echo -e "${RED}[ERROR]${NC} $1"
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}
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check_prerequisites() {
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log_info "Checking prerequisites..."
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# Check Python
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if ! command -v python3 &> /dev/null; then
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log_error "Python 3 not found"
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return 1
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fi
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log_success "Python 3 found: $(python3 --version)"
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# Check Docker
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if ! command -v docker &> /dev/null; then
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log_warning "Docker not found (will be needed for deployment)"
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else
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log_success "Docker found: $(docker --version)"
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fi
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# Check Flask app
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if [[ ! -f "$WEB_DIR/app.py" ]]; then
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log_error "Web/app.py not found"
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return 1
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fi
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log_success "Flask app found at $WEB_DIR/app.py"
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return 0
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}
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create_backups() {
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log_info "Creating backups..."
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if [[ "$DRY_RUN" == "dry-run" ]]; then
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log_info "[DRY-RUN] Would backup to: $BACKUP_DIR"
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return 0
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fi
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mkdir -p "$BACKUP_DIR"
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# Backup critical files
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cp "$WEB_DIR/app.py" "$BACKUP_DIR/app.py.bak"
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cp "$WEB_DIR/settings.py" "$BACKUP_DIR/settings.py.bak" 2>/dev/null || true
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cp "docker-compose.yml" "$BACKUP_DIR/docker-compose.yml.bak" 2>/dev/null || true
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log_success "Backups created at: $BACKUP_DIR"
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}
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check_tenant_modules() {
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log_info "Checking tenant modules..."
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local missing=0
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for module in tenant session_manager query_cache; do
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if [[ ! -f "$WEB_DIR/${module}.py" ]]; then
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log_warning "Missing module: $WEB_DIR/${module}.py"
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((missing++))
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else
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log_success "Module found: $module.py"
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fi
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done
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if [[ $missing -gt 0 ]]; then
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log_error "Missing $missing required modules. Ensure they are created first."
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return 1
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fi
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return 0
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}
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check_docker_files() {
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log_info "Checking Docker configuration files..."
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local missing=0
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if [[ ! -f "docker-compose-multitenant.yml" ]]; then
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log_warning "Missing docker-compose-multitenant.yml"
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((missing++))
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else
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log_success "docker-compose-multitenant.yml found"
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fi
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if [[ ! -f "docker/nginx/multitenant.conf" ]]; then
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log_warning "Missing docker/nginx/multitenant.conf"
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((missing++))
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else
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log_success "docker/nginx/multitenant.conf found"
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fi
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if [[ $missing -gt 0 ]]; then
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log_warning "Missing $missing Docker files (needed for deployment)"
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fi
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return 0
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}
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update_app_py() {
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log_info "Updating app.py with Multi-Tenant imports..."
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if [[ "$DRY_RUN" == "dry-run" ]]; then
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log_info "[DRY-RUN] Would add Multi-Tenant imports to app.py"
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return 0
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fi
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# Check if already updated
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if grep -q "from tenant import" "$WEB_DIR/app.py"; then
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log_warning "app.py already contains Multi-Tenant imports (skipping)"
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return 0
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fi
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# Add imports after other data_protection imports
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local imports_section=$(python3 -c "
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import re
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with open('$WEB_DIR/app.py', 'r') as f:
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content = f.read()
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# Find the line after data_protection imports
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if 'from data_protection import' in content:
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lines = content.split('\n')
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for i, line in enumerate(lines):
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if 'from data_protection import' in line:
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# Find the end of this import block
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j = i + 1
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while j < len(lines) and (lines[j].startswith(' ') or lines[j].strip() == ''):
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j += 1
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# Insert new imports before settings import
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print(j)
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break
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else:
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print(-1)
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" 2>/dev/null)
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if [[ $imports_section -eq -1 ]]; then
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log_warning "Could not find insertion point for Multi-Tenant imports"
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log_info "Please manually add the following imports to app.py:"
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cat << 'EOF'
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# Multi-Tenant Imports
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from tenant import get_tenant_context, require_tenant, get_tenant_db
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from session_manager import create_redis_session_interface
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from query_cache import get_cache_manager, cached_query, invalidate_cache
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EOF
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return 1
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fi
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log_success "Multi-Tenant imports prepared"
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return 0
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}
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update_requirements() {
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log_info "Checking requirements.txt for Redis..."
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if [[ "$DRY_RUN" == "dry-run" ]]; then
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log_info "[DRY-RUN] Would update requirements.txt"
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return 0
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fi
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# Check both root and Web/requirements.txt
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for req_file in requirements.txt Web/requirements.txt; do
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if [[ -f "$req_file" ]]; then
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if ! grep -q "^redis" "$req_file"; then
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log_info "Adding redis to $req_file..."
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echo "redis>=7.0.0" >> "$req_file"
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log_success "Added redis to $req_file"
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else
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log_success "$req_file already has redis"
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fi
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fi
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done
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return 0
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}
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generate_migration_guide() {
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log_info "Generating migration guide..."
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cat > "$BACKUP_DIR/MIGRATION_NOTES.md" << 'EOF'
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# Multi-Tenant Migration Checklist
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## Automated Steps Completed
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- [x] Backup created
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- [x] Tenant modules verified
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- [x] Docker files prepared
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- [x] app.py imports prepared
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- [x] requirements.txt updated
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## Manual Steps Required
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### 1. Update app.py Configuration (5 min)
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Add after `app = Flask(...)`:
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```python
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# Multi-Tenant Configuration
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if os.getenv('INVENTAR_SESSION_BACKEND') == 'redis':
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try:
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app.session_interface = create_redis_session_interface(app)
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app.logger.info("Redis session backend enabled")
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except Exception as e:
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app.logger.warning(f"Redis session backend failed: {e}")
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```
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### 2. Add Health Check Endpoint (5 min)
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Add this route:
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```python
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@app.route('/health')
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def health_check():
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try:
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mongo = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
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mongo.admin.command('ping')
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return {'status': 'healthy'}, 200
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except Exception as e:
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return {'status': 'unhealthy'}, 503
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```
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### 3. Update Database Access (10-30 min)
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Change existing routes to use:
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```python
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@require_tenant
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def your_route():
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db = get_tenant_db(MongoClient(...))
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# Use db as usual
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```
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### 4. Setup DNS (5 min)
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Create wildcard DNS record:
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```
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*.example.com IN A your-server-ip
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```
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### 5. Create SSL Certificate (10 min)
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```bash
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# Let's Encrypt (recommended)
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sudo certbot certonly --manual --preferred-challenges dns \
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-d "*.example.com" -d "example.com"
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# Copy to certs folder
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cp /etc/letsencrypt/live/example.com/fullchain.pem certs/inventarsystem.crt
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cp /etc/letsencrypt/live/example.com/privkey.pem certs/inventarsystem.key
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```
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### 6. Deploy Multi-Tenant
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```bash
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# Install dependencies
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pip install -r requirements.txt
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# Start Multi-Tenant deployment
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docker-compose -f docker-compose-multitenant.yml up -d
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# Test
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curl https://test.example.com/health
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```
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### 7. Verify (5 min)
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```bash
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# Check logs
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docker-compose logs app
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# Verify each tenant
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curl https://schule1.example.com/debug/tenant
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curl https://schule2.example.com/debug/tenant
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# Cache stats
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curl https://schule1.example.com/debug/cache-stats
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```
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## Rollback Plan
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If something goes wrong:
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1. Stop Multi-Tenant deployment
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```bash
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docker-compose -f docker-compose-multitenant.yml down
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```
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2. Restore from backup
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```bash
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cp .migration-backup-*/app.py Web/app.py
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cp .migration-backup-*/settings.py Web/settings.py
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```
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3. Restart original deployment
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```bash
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docker-compose up -d
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```
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## Performance Expectations
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- Memory per instance: 100-150MB (was 200MB)
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- Response time: -30% (Redis caching)
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- Max concurrent users: 3x increase
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- Database load: -70% (query caching)
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## Support
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- Check logs: `docker-compose -f docker-compose-multitenant.yml logs -f app`
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- Debug tenant: `curl https://your-tenant.com/debug/tenant`
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- See MULTITENANT_DEPLOYMENT.md for detailed guide
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EOF
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log_success "Migration guide created at: $BACKUP_DIR/MIGRATION_NOTES.md"
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}
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validate_setup() {
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log_info "Validating setup..."
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# Check Python syntax of tenant modules
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for module in tenant session_manager query_cache; do
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module_file="$WEB_DIR/${module}.py"
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if [[ -f "$module_file" ]]; then
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if python3 -m py_compile "$module_file" 2>/dev/null; then
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log_success "Module syntax valid: $module.py"
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else
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log_error "Syntax error in $module.py"
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return 1
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fi
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fi
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done
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return 0
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}
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print_summary() {
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cat << EOF
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${GREEN}═══════════════════════════════════════════════════════════${NC}
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${GREEN} Multi-Tenant Migration Summary${NC}
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${GREEN}═══════════════════════════════════════════════════════════${NC}
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${GREEN}✓ Prerequisites checked${NC}
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${GREEN}✓ Backups created${NC}
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${GREEN}✓ Tenant modules verified${NC}
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${GREEN}✓ Docker files prepared${NC}
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${GREEN}✓ app.py imports prepared${NC}
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${GREEN}✓ requirements.txt updated${NC}
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${YELLOW}Next Steps:${NC}
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1. Review migration guide: $BACKUP_DIR/MIGRATION_NOTES.md
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2. Manually update app.py (see guide above)
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3. Setup DNS wildcard record
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4. Create SSL certificate
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5. Deploy: docker-compose -f docker-compose-multitenant.yml up -d
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${BLUE}Documentation:${NC}
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- MULTITENANT_DEPLOYMENT.md - Complete deployment guide
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- MULTITENANT_INTEGRATION.md - Code integration examples
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- $BACKUP_DIR/MIGRATION_NOTES.md - Step-by-step checklist
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${GREEN}═══════════════════════════════════════════════════════════${NC}
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EOF
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}
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main() {
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log_info "Multi-Tenant Migration Starting..."
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if [[ "$DRY_RUN" == "dry-run" ]]; then
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log_warning "Running in DRY-RUN mode - no changes will be made"
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fi
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check_prerequisites || exit 1
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create_backups
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check_tenant_modules || exit 1
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check_docker_files
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update_app_py || true
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update_requirements
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validate_setup || exit 1
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generate_migration_guide
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print_summary
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if [[ "$DRY_RUN" == "dry-run" ]]; then
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log_warning "DRY-RUN completed - no changes were made"
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log_info "Run without 'dry-run' parameter to execute migration"
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fi
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}
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main "$@"
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