check if stream_hls_url exists before we exec the recording

src/scheduler/app.py

@@ -1,7 +1,8 @@
 import os
+import time
 import logging
 import json
-import time
+import requests
 from datetime import datetime
 from flask import Flask, render_template, jsonify, request
 from apscheduler.schedulers.background import BackgroundScheduler
@@ -154,8 +155,14 @@ def exec_recorder(stream_id, stream_hls_url):
     output_file = current_datetime + ".mp4"
     if rechead != "":
         logger_job.error('Recorder is already started. Refusing to start another rec job.')
-        return False
     else:
+        # Check if the stream_hls_url returns 200
+        req_counter = 0
+        while True:
+            req_counter += 1
+            if requests.get(stream_hls_url).status_code == 200:
+                logger_job.warning(f'{stream_hls_url} accessible after {req_counter} attempts.')
+                break    
         logger_job.warning(f'Starting recording job for {output_file}')
         rechead = stream_id
         ffmpeg = (

src/scheduler/requirements.txt

@@ -8,3 +8,4 @@ waitress==2.1.2
 Werkzeug==3.0.1
 APScheduler==3.10.4
 python-ffmpeg==2.0.10
+requests==2.31.0