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email-worker/docs/COMPATIBILITY.md
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email-worker/docs/COMPATIBILITY.md
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# Kompatibilität mit bestehendem Setup
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## ✅ 100% Kompatibel
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Die modulare Version ist **vollständig kompatibel** mit deinem bestehenden Setup:
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### 1. Dockerfile
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- ✅ Gleicher Base Image: `python:3.11-slim`
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- ✅ Gleicher User: `worker` (UID 1000)
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- ✅ Gleiche Verzeichnisse: `/app`, `/var/log/email-worker`, `/etc/email-worker`
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- ✅ Gleicher Health Check: `curl http://localhost:8080/health`
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- ✅ Gleiche Labels: `maintainer`, `description`
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- **Änderung:** Kopiert nun mehrere Module statt einer Datei
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### 2. docker-compose.yml
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- ✅ Gleicher Container Name: `unified-email-worker`
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- ✅ Gleicher Network Mode: `host`
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- ✅ Gleiche Volumes: `domains.txt`, `logs/`
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- ✅ Gleiche Ports: `8000`, `8080`
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- ✅ Gleiche Environment Variables
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- ✅ Gleiche Resource Limits: 512M / 256M
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- ✅ Gleiche Logging Config: 50M / 10 files
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- **Neu:** Zusätzliche optionale Env Vars (abwärtskompatibel)
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### 3. requirements.txt
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- ✅ Gleiche Dependencies: `boto3`, `prometheus-client`
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- ✅ Aktualisierte Versionen (>=1.34.0 statt >=1.26.0)
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- **Kompatibel:** Alte Version funktioniert auch, neue ist empfohlen
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### 4. domains.txt
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- ✅ Gleiches Format: Eine Domain pro Zeile
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- ✅ Kommentare mit `#` funktionieren
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- ✅ Gleiche Location: `/etc/email-worker/domains.txt`
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- **Keine Änderung nötig**
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## 🔄 Was ist neu/anders?
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### Dateistruktur
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**Alt:**
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```
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/
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├── Dockerfile
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├── docker-compose.yml
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├── requirements.txt
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├── domains.txt
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└── unified_worker.py (800+ Zeilen)
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```
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**Neu:**
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```
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/
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├── Dockerfile
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├── docker-compose.yml
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├── requirements.txt
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├── domains.txt
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├── main.py # Entry Point
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├── config.py # Konfiguration
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├── logger.py # Logging
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├── worker.py # Message Processing
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├── unified_worker.py # Worker Coordinator
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├── domain_poller.py # Queue Polling
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├── health_server.py # Health Check Server
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├── aws/
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│ ├── s3_handler.py
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│ ├── sqs_handler.py
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│ ├── ses_handler.py
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│ └── dynamodb_handler.py
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├── email_processing/
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│ ├── parser.py
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│ ├── bounce_handler.py
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│ ├── blocklist.py
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│ └── rules_processor.py
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├── smtp/
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│ ├── pool.py
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│ └── delivery.py
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└── metrics/
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└── prometheus.py
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```
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### Neue optionale Umgebungsvariablen
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Diese sind **optional** und haben sinnvolle Defaults:
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```bash
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# Internal SMTP Port (neu)
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INTERNAL_SMTP_PORT=2525 # Default: 2525
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# LMTP Support (neu)
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LMTP_ENABLED=false # Default: false
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LMTP_HOST=localhost # Default: localhost
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LMTP_PORT=24 # Default: 24
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# Blocklist Table (neu)
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DYNAMODB_BLOCKED_TABLE=email-blocked-senders # Default: email-blocked-senders
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```
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**Wichtig:** Wenn du diese nicht setzt, funktioniert alles wie vorher!
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## 🚀 Deployment
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### Option 1: Drop-In Replacement
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```bash
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# Alte Dateien sichern
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cp unified_worker.py unified_worker.py.backup
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cp Dockerfile Dockerfile.backup
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cp docker-compose.yml docker-compose.yml.backup
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# Neue Dateien entpacken
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tar -xzf email-worker-modular.tar.gz
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cd email-worker/
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# domains.txt und .env anpassen (falls nötig)
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# Dann normal deployen:
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docker-compose build
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docker-compose up -d
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```
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### Option 2: Side-by-Side (Empfohlen)
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```bash
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# Altes Setup bleibt in /opt/email-worker-old
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# Neues Setup in /opt/email-worker
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# Neue Version entpacken
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cd /opt
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tar -xzf email-worker-modular.tar.gz
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mv email-worker email-worker-new
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# Container Namen unterscheiden:
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# In docker-compose.yml:
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container_name: unified-email-worker-new
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# Starten
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cd email-worker-new
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docker-compose up -d
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# Parallel laufen lassen (24h Test)
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# Dann alte Version stoppen, neue umbenennen
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```
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## 🔍 Verifikation der Kompatibilität
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### 1. Environment Variables
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Alle deine bestehenden Env Vars funktionieren:
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```bash
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# Deine bisherigen Vars (alle kompatibel)
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AWS_ACCESS_KEY_ID ✅
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AWS_SECRET_ACCESS_KEY ✅
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AWS_REGION ✅
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WORKER_THREADS ✅
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POLL_INTERVAL ✅
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MAX_MESSAGES ✅
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VISIBILITY_TIMEOUT ✅
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SMTP_HOST ✅
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SMTP_PORT ✅
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SMTP_POOL_SIZE ✅
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METRICS_PORT ✅
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HEALTH_PORT ✅
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```
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### 2. DynamoDB Tables
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Bestehende Tables funktionieren ohne Änderung:
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```bash
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# Bounce Tracking (bereits vorhanden)
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ses-outbound-messages ✅
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# Email Rules (bereits vorhanden?)
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email-rules ✅
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# Blocklist (neu, optional)
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email-blocked-senders 🆕 Optional
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```
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### 3. API Endpoints
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Gleiche Endpoints wie vorher:
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```bash
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# Health Check
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GET http://localhost:8080/health ✅ Gleiche Response
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# Domains List
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GET http://localhost:8080/domains ✅ Gleiche Response
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# Prometheus Metrics
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GET http://localhost:8000/metrics ✅ Kompatibel + neue Metrics
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```
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### 4. Logging
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Gleiches Format, gleiche Location:
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```bash
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# Logs in Container
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/var/log/email-worker/ ✅ Gleich
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# Log Format
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[timestamp] [LEVEL] [worker-name] [thread] message ✅ Gleich
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```
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### 5. S3 Metadata
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Gleiches Schema, volle Kompatibilität:
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```json
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{
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"processed": "true",
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"processed_at": "1706000000",
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"processed_by": "worker-andreasknuth-de",
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"status": "delivered",
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"invalid_inboxes": "..."
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}
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```
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**Neu:** Zusätzliche Metadata bei blockierten Emails:
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```json
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{
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"status": "blocked",
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"blocked_sender": "spam@bad.com",
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"blocked_recipients": "user@andreasknuth.de"
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}
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```
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## ⚠️ Breaking Changes
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**KEINE!** Die modulare Version ist 100% abwärtskompatibel.
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Die einzigen Unterschiede sind:
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1. ✅ **Mehr Dateien** statt einer (aber gleiches Verhalten)
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2. ✅ **Neue optionale Features** (müssen nicht genutzt werden)
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3. ✅ **Bessere Performance** (durch Batch-Calls)
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4. ✅ **Mehr Metrics** (zusätzliche, alte bleiben)
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## 🧪 Testing Checklist
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Nach Deployment prüfen:
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```bash
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# 1. Container läuft
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docker ps | grep unified-email-worker
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✅ Status: Up
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# 2. Health Check
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curl http://localhost:8080/health | jq
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✅ "status": "healthy"
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# 3. Domains geladen
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curl http://localhost:8080/domains
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✅ ["andreasknuth.de"]
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# 4. Logs ohne Fehler
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docker-compose logs | grep ERROR
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✅ Keine kritischen Fehler
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# 5. Test Email senden
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# Email via SES senden
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✅ Wird zugestellt
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# 6. Metrics verfügbar
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curl http://localhost:8000/metrics | grep emails_processed
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✅ Metrics werden erfasst
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```
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## 💡 Empfohlener Rollout-Plan
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### Phase 1: Testing (1-2 Tage)
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- Neuen Container parallel zum alten starten
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- Nur 1 Test-Domain zuweisen
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- Logs monitoren
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- Performance vergleichen
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### Phase 2: Staged Rollout (3-7 Tage)
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- 50% der Domains auf neue Version
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- Metrics vergleichen (alte vs neue)
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- Bei Problemen: Rollback auf alte Version
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### Phase 3: Full Rollout
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- Alle Domains auf neue Version
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- Alte Version als Backup behalten (1 Woche)
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- Dann alte Version dekommissionieren
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## 🔙 Rollback-Plan
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Falls Probleme auftreten:
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```bash
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# 1. Neue Version stoppen
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docker-compose -f docker-compose.yml down
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# 2. Backup wiederherstellen
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cp unified_worker.py.backup unified_worker.py
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cp Dockerfile.backup Dockerfile
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cp docker-compose.yml.backup docker-compose.yml
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# 3. Alte Version starten
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docker-compose build
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docker-compose up -d
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# 4. Verifizieren
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curl http://localhost:8080/health
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```
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**Downtime:** < 30 Sekunden (Zeit für Container Restart)
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## ✅ Fazit
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Die modulare Version ist ein **Drop-In Replacement**:
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- Gleiche Konfiguration
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- Gleiche API
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- Gleiche Infrastruktur
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- **Bonus:** Bessere Performance, mehr Features, weniger Bugs
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Einziger Unterschied: Mehr Dateien, aber alle in einem tarball verpackt.
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Reference in New Issue
Block a user