cutter: Allow config to manually disable transcode checking for location

This deals with the problem where multiple youtube locations that refer
to the same actual account (but with different settings) will all try to check
for when videos are done transcoding, when only one is needed.

cutter/cutter/main.py

@@ -507,7 +507,13 @@ def main(dbconnect, config, creds_file, name=None, base_dir=".", metrics_port=80
 
 	config should be a json blob mapping upload location names to a config object
 	for that location. This config object should contain the keys:
-		type: the name of the upload backend type
+		type:
+			the name of the upload backend type
+		no_transcode_check:
+			bool. If true, won't check for when videos are done transcoding.
+			This is useful when multiple upload locations actually refer to the
+			same place just with different settings, and you only want one of them
+			to actually do the check.
 	along with any additional config options defined for that backend type.
 
 	creds_file should contain any required credentials for the upload backends, as JSON.
@@ -547,19 +553,23 @@ def main(dbconnect, config, creds_file, name=None, base_dir=".", metrics_port=80
 
 	config = json.loads(config)
 	upload_locations = {}
+	needs_transcode_check = []
 	for location, backend_config in config.items():
 		backend_type = backend_config.pop('type')
+		no_transcode_check = backend_config.pop('no_transcode_check', False)
 		if type == 'youtube':
 			backend_type = Youtube
 		else:
 			raise ValueError("Unknown upload backend type: {!r}".format(type))
-		upload_locations[location] = backend_type(credentials, **backend_config)
+		backend = backend_type(credentials, **backend_config)
+		upload_locations[location] = backend
+		if backend.needs_transcode and not no_transcode_check:
+			needs_transcode_check.append(backend)
 
 	cutter = Cutter(upload_locations, dbmanager, stop, name, base_dir)
 	transcode_checkers = [
 		TranscodeChecker(backend, dbmanager, stop)
-		for backend in upload_locations.values()
+		for backend in needs_transcode_check
-		if backend.needs_transcode
 	]
 	jobs = [gevent.spawn(cutter.run)] + [
 		gevent.spawn(transcode_checker.run)

docker-compose.jsonnet

@@ -92,7 +92,7 @@
   // Config for cutter upload locations. See cutter docs for full detail.
   cutter_config:: {
     desertbus: {type: "youtube"},
-    unlisted: {type: "youtube", hidden: true},
+    unlisted: {type: "youtube", hidden: true, no_transcode_check: true},
   },
 
   // Path to a JSON file containing google credentials for sheetsync as keys