feat: Task 19 — Health-Check Blueprint mit Readiness-Endpunkt (closes #19)

src/app.py

@@ -8,6 +8,10 @@ from src.config import settings
 from src.error_handler import register_error_handlers
 from src.logging_config import setup_logging
 from src.queue.handler import QueueHandler
+from src.routes.admin import admin_bp
+from src.routes.health import health_bp
+from src.routes.telegram import telegram_bp
+from src.routes.whatsapp import whatsapp_bp
 
 
 def create_app() -> Flask:
@@ -29,9 +33,9 @@ def create_app() -> Flask:
         redis_port=settings.REDIS_PORT,
     )
 
-    @app.route("/health")
-    def health() -> dict:
-        """Health-Check Endpoint für Monitoring."""
-        return {"status": "ok", "queue_size": app.queue_handler.queue_size()}
+    app.register_blueprint(telegram_bp, url_prefix="/webhook")
+    app.register_blueprint(whatsapp_bp, url_prefix="/webhook")
+    app.register_blueprint(admin_bp, url_prefix="/admin")
+    app.register_blueprint(health_bp)
 
-    return app
+    return app

src/routes/health.py

@@ -0,0 +1,49 @@
+"""Health-Check Route mit Status und Readiness-Endpunkt."""
+
+from __future__ import annotations
+
+import platform
+import sys
+
+from flask import Blueprint, current_app, jsonify
+
+health_bp = Blueprint("health", __name__, url_prefix="/health")
+
+
+@health_bp.route("")
+def health_status() -> tuple:
+    """GET /health — Liveness: Status, Queue-Size, Python-Version, Plattform."""
+    qh = getattr(current_app, "queue_handler", None)
+    queue_size = qh.queue_size() if qh else None
+    return jsonify(
+        {
+            "status": "ok",
+            "queue_size": queue_size,
+            "python_version": f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}",
+            "platform": platform.platform(),
+        }
+    ), 200
+
+
+@health_bp.route("/ready")
+def health_ready() -> tuple:
+    """GET /health/ready — Readiness: Redis-Verbindung prüfen."""
+    qh = getattr(current_app, "queue_handler", None)
+    if qh is None:
+        return jsonify(
+            {
+                "ready": False,
+                "reason": "QueueHandler nicht registriert",
+            }
+        ), 503
+
+    try:
+        qh.redis.ping()
+        return jsonify({"ready": True}), 200
+    except Exception as exc:
+        return jsonify(
+            {
+                "ready": False,
+                "reason": str(exc),
+            }
+        ), 503

tests/test_health.py

@@ -0,0 +1,65 @@
+"""Tests für src.routes.health — Health-Check mit Readiness."""
+
+from __future__ import annotations
+
+from unittest.mock import MagicMock, patch
+
+from src.app import create_app
+
+
+class TestHealthStatus:
+    """Tests für /health Endpoint."""
+
+    def setup_method(self) -> None:
+        """Jeder Test bekommt eine frische App mit gemocktem Redis."""
+        with patch("src.queue.handler.redis.Redis"):
+            self.app = create_app()
+            self.client = self.app.test_client()
+
+    def test_health_status_ok(self) -> None:
+        """GET /health → 200 mit Status-JSON."""
+        self.app.queue_handler = MagicMock(queue_size=MagicMock(return_value=42))  # type: ignore[assignment]
+        response = self.client.get("/health")
+        assert response.status_code == 200
+        data = response.get_json()
+        assert data["status"] == "ok"
+        assert "queue_size" in data
+        assert "python_version" in data
+        assert "platform" in data
+
+    def test_health_queue_size_integer(self) -> None:
+        """queue_size ist ein Integer."""
+        self.app.queue_handler = MagicMock(queue_size=MagicMock(return_value=7))  # type: ignore[assignment]
+        response = self.client.get("/health")
+        data = response.get_json()
+        assert isinstance(data["queue_size"], int)
+        assert data["queue_size"] == 7
+
+
+class TestHealthReady:
+    """Tests für /health/ready Endpoint."""
+
+    def setup_method(self) -> None:
+        """Jeder Test bekommt eine frische App."""
+        with patch("src.queue.handler.redis.Redis"):
+            self.app = create_app()
+            self.client = self.app.test_client()
+
+    def test_health_ready_redis_alive(self) -> None:
+        """Redis ping erfolgreich → ready=true."""
+        response = self.client.get("/health/ready")
+        # Redis wird gemockt, ping sollte successful sein
+        assert response.status_code == 200
+        data = response.get_json()
+        assert data["ready"] is True
+
+    def test_health_ready_redis_fails(self) -> None:
+        """Redis ping fehlschlägt → ready=false, 503."""
+        with patch.object(
+            self.app.queue_handler.redis, "ping", side_effect=Exception("Redis down")
+        ):
+            response = self.client.get("/health/ready")
+            assert response.status_code == 503
+            data = response.get_json()
+            assert data["ready"] is False
+            assert "reason" in data