Restructure repository for final submission

q5-mithal-monitor/app.py

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+from flask import Flask, jsonify, render_template
+import json
+import os
+import threading
+import time
+import monitor  # our monitor.py — reused directly, not run as a separate process
+
+app = Flask(__name__)
+
+DATA_FILE = "monitor-data.json"
+
+
+def background_monitor_loop():
+    """Runs monitor.monitor() every CHECK_INTERVAL seconds inside this
+    same process/container, since the Dockerfile only starts one
+    process (gunicorn running app.py). This replaces running
+    monitor.py as a separate process, which never actually happened
+    after deployment (only app.py ran, monitor.py was never invoked)."""
+    print("Starting background monitor thread...")
+    while True:
+        try:
+            monitor.monitor()
+        except Exception as e:
+            print("Monitor thread error:", e)
+        time.sleep(monitor.CHECK_INTERVAL)
+
+
+# Start the background thread once, when this module is imported by
+# gunicorn. Safe because the Dockerfile runs a single gunicorn worker
+# (no --workers flag => defaults to 1), so this thread won't be
+# duplicated across multiple worker processes.
+monitor_thread = threading.Thread(target=background_monitor_loop, daemon=True)
+monitor_thread.start()
+
+
+@app.route("/")
+def home():
+    return render_template("dashboard.html")
+
+
+@app.route("/dashboard")
+def dashboard():
+    return render_template("dashboard.html")
+
+
+@app.route("/api/metrics")
+def metrics():
+
+    if not os.path.exists(DATA_FILE):
+        return jsonify([])
+
+    with open(DATA_FILE, "r") as f:
+        data = json.load(f)
+
+    return jsonify(data)
+
+
+@app.route("/health")
+def health():
+    return {
+        "status": "healthy"
+    }
+
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=5000, debug=True)