Added further error handling and retries when sending a notification

src/send_notification.py

@@ -1,12 +1,23 @@
 import requests
 from requests.exceptions import RequestException, Timeout, ConnectionError, HTTPError
+from fastapi import HTTPException
 from secret_handler import return_credentials
 import os
+import time
+import logging
+
 
 backend_api_url=os.getenv("BACKEND_API_URL","localhost:8101/internal/receive-notifications")
 api_key= return_credentials("/etc/secrets/api_key")
+logger = logging.getLogger(__name__)
 
-def send_notification(title:str,chapter:int, link:str):
+
+def send_notification(title:str,
+					chapter:int,
+					link:str,
+					max_retries: int = 5,
+					timeout: int = 5
+	):
 	headers = {
 		"X-API-Key-Internal": api_key,
 		"Content-Type": "application/json"
@@ -20,16 +31,24 @@ def send_notification(title:str,chapter:int, link:str):
 		"link": link
 		}}
 	
-	try:
-		response = requests.post(backend_api_url, headers=headers, json=data)
-		response.raise_for_status()
-		print("Success: Notification sent")
+	with requests.Session() as session:
+		for attempt in range(1,max_retries+1):
+			try:
+				response = session.post(backend_api_url, headers=headers, json=data, timeout=timeout)
+				response.raise_for_status()
+				logger.info("Notification sent successfully")
+				return response.text
 
-	except Timeout:
-		print("Error: request timed out")
-	except ConnectionError:
-		print("Error: connection failed")
-	except HTTPError as e:
-		print(f"HTTP error: {e.response.status_code} - {e.response.text}")
-	except RequestException as e:
-		print("Request failed:", str(e))
+			except (Timeout,ConnectionError) as e:
+				logger.warning(f"Attempt {attempt}/{max_retries} failed: {type(e).__name__}")
+				if attempt == max_retries:
+					raise HTTPException(status_code=503, detail=f"Notification service unavailable: {type(e).__name__}")
+				time.sleep(2 ** (attempt - 1))
+
+			except HTTPError as e:
+				logger.error(f"HTTP {e.response.status_code}: {e.response.text}")
+				raise HTTPException(status_code=e.response.status_code, detail=e.response.text)
+			
+			except RequestException as e:
+				logger.error(f"Unexpected request failure: {e}")
+				raise HTTPException(status_code=500, detail=f"Request failed: {str(e)}")