On améliore le redémarrage de Celery

Fix #325

src/agenda_culturel/celery.py

@@ -297,6 +297,8 @@ def screenshot(self):
 
 @worker_ready.connect
 def at_start(sender, **k):
+    logger.info("Worker is ready")
+    # create screenshot
     if not os.path.isfile(SCREENSHOT_FILE):
         logger.info("Init screenshot file")
         with sender.app.connection() as conn:
@@ -304,6 +306,12 @@ def at_start(sender, **k):
     else:
         logger.info("Screenshot file already exists")
 
+    # cancel running tasks
+    from agenda_culturel.models import BatchImportation
+    logger.info("Cancel running importation tasks")
+    running_tasks = BatchImportation.objects.filter(status=BatchImportation.STATUS.RUNNING).update(status=BatchImportation.STATUS.CANCELED)
+
+
 
 @app.task(bind=True)
 def run_all_recurrent_imports(self, only_fb=False):