Add --test CLI arg and override supported task types

flamenco_worker/cli.py

@@ -27,6 +27,10 @@ def main():
                         help="Enables debug logging for Flamenco Worker's own log entries. "
                              "Edit the logging config in flamenco-worker.cfg "
                              "for more powerful options.")
+    parser.add_argument('-t', '--test', action='store_true',
+                        help="Starts up in testing mode, in which only a handful of "
+                             "test-specific task types are accepted. This overrides the task_types "
+                             "in the configuration file.")
     args = parser.parse_args()
 
     if args.version:
@@ -36,12 +40,16 @@ def main():
 
     # Load configuration
     from . import config
-    confparser = config.load_config(args.config, args.verbose)
+    confparser = config.load_config(args.config, args.verbose, args.test)
     config.configure_logging(confparser, enable_debug=args.debug)
 
     log = logging.getLogger(__name__)
     log.debug('Starting, pid=%d', os.getpid())
 
+    if args.test:
+        log.warning('Test mode enabled, overriding task_types=%r',
+                    confparser.value('task_types'))
+
     if args.reregister:
         log.warning('Erasing worker_id and worker_secret so we can attempt re-registration.')
         confparser.erase('worker_id')

flamenco_worker/config.py

@@ -28,6 +28,9 @@ DEFAULT_CONFIG = {
     ])
 }
 
+# Will be assigned to the config key 'task_types' when started with --test CLI arg.
+TESTING_TASK_TYPES = 'test-blender-render'
+
 log = logging.getLogger(__name__)
 
 
@@ -74,7 +77,8 @@ def merge_with_home_config(new_conf: dict):
 
 
 def load_config(config_file: pathlib.Path = None,
-                show_effective_config: bool = False) -> ConfigParser:
+                show_effective_config: bool = False,
+                enable_test_mode=False) -> ConfigParser:
     """Loads one or more configuration files."""
 
     # Logging and the default interpolation of configparser both use the
@@ -102,6 +106,9 @@ def load_config(config_file: pathlib.Path = None,
 
     log.info('Succesfully loaded: %s', loaded)
 
+    if enable_test_mode:
+        confparser.setvalue('task_types', TESTING_TASK_TYPES)
+
     if show_effective_config:
         import sys
         log.info('Effective configuration:')