Minor fixes and update documentation. Preparing the upcoming 0.2 release.

bonobo/commands/__init__.py

@@ -1,22 +1,25 @@
 import argparse
 
+import logging
 from stevedore import ExtensionManager
 
 
-def entrypoint():
+def entrypoint(args=None):
     parser = argparse.ArgumentParser()
 
     subparsers = parser.add_subparsers(dest='command')
     subparsers.required = True
 
-    def register_extension(ext):
-        parser = subparsers.add_parser(ext.name)
-        command = ext.plugin(parser)
-        parser.set_defaults(command=command)
+    commands = {}
+    def register_extension(ext, commands=commands):
+        try:
+            parser = subparsers.add_parser(ext.name)
+            commands[ext.name] = ext.plugin(parser)
+        except Exception:
+            logging.exception('Error while loading command {}.'.format(ext.name))
 
     mgr = ExtensionManager(namespace='bonobo.commands', )
     mgr.map(register_extension)
 
-    args = parser.parse_args().__dict__
-    command = args.pop('command')
-    command(**args)
+    args = parser.parse_args(args).__dict__
+    commands[args.pop('command')](**args)