SIENTIAPDE-1174

Update dependencies, modify replica count, and implement metrics tracking

- Updated sientia-dataops-library version from 1.3.5 to 1.3.7 in requirements.txt.
- Changed replicaCount in values.yaml from 5 to 3 and incremented image tag from 0.2.7 to 0.3.1.
- Added Prometheus metrics tracking in gates.py and worker.py, including a new write_metrics method.
- Configured Prometheus service and ServiceMonitor in values.yaml for metrics collection.

laborious/worker/worker.py

@@ -20,13 +20,20 @@ with workflow.unsafe.imports_passed_through():
     )
     from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
     from sientia_do.temporal.utils.logger import get_logger
+    from laborious import metrics
+    from prometheus_client import start_http_server
+
+POD_ID = os.getenv('POD_ID')
 
 
 async def main():
     host = os.getenv('TEMPORAL_HOST', 'localhost:7233')
     logger = get_logger(__name__)
 
-    logger.info('Starting Worker...')
+    logger.info(f'Starting Worker with POD_ID: {POD_ID}')
+
+    logger.info("Starting prometheus client...")
+    start_prometheus_server()
 
     logger.info('Starting Notification Handler...')
 
@@ -125,5 +132,17 @@ async def main():
         # Exit with a non-zero status code to indicate failure to Kubernetes
         sys.exit(1)
 
+
+def start_prometheus_server():
+    try:
+        port = int(os.getenv("HTTP_METRICS_PORT", 9090))
+        start_http_server(port)
+        print(f"Prometheus server started on port {port}.")
+        metrics.APP_UP.labels(pod_id=POD_ID).set(1)  # Mark app as UP
+    except Exception as e:
+        print(f"Failed to start Prometheus server: {e}")
+        os._exit(1)
+
+
 if __name__ == '__main__':
     asyncio.run(main())