Webapp toegevoegd

app.py

@@ -0,0 +1,55 @@
+from flask import Flask
+import time, random, threading
+
+app = Flask(__name__)
+
+# --- Metrics (thread-safe counters) ---
+lock = threading.Lock()
+metrics = {
+    "requests_total": 0,
+    "errors_total": 0,
+    "duration_sum": 0.0,
+    "duration_count": 0,
+}
+
+@app.route('/')
+def home():
+    start = time.time()
+
+    # Simuleer latency
+    time.sleep(random.uniform(0.1, 2.0))
+
+    # Simuleer 10% errors
+    is_error = random.random() < 0.1
+    duration = time.time() - start
+
+    with lock:
+        metrics["requests_total"] += 1
+        metrics["duration_sum"] += duration
+        metrics["duration_count"] += 1
+        if is_error:
+            metrics["errors_total"] += 1
+
+    if is_error:
+        return "Oeps!", 500
+    return "Welkom bij de shop!"
+
+@app.route('/metrics')
+def get_metrics():
+    with lock:
+        avg_duration = (
+            metrics["duration_sum"] / metrics["duration_count"]
+            if metrics["duration_count"] > 0 else 0
+        )
+        error_rate = (
+            metrics["errors_total"] / metrics["requests_total"] * 100
+            if metrics["requests_total"] > 0 else 0
+        )
+        return {
+            "requests_total":  metrics["requests_total"],
+            "errors_total":    metrics["errors_total"],
+            "error_rate_pct":  round(error_rate, 2),
+            "avg_duration_sec": round(avg_duration, 3),
+        }
+
+app.run(host='0.0.0.0', port=5000)