Merge pull request #8213 from jmchilton/fix_os_to_dict

Allow re-populating objectstore from to_dict form.

lib/galaxy/objectstore/__init__.py

@@ -25,6 +25,7 @@ from galaxy.util import (
     force_symlink,
     umask_fix_perms,
 )
+from galaxy.util.bunch import Bunch
 from galaxy.util.odict import odict
 from galaxy.util.path import (
     safe_makedirs,
@@ -892,6 +893,12 @@ def build_object_store_from_config(config, fsmon=False, config_xml=None, config_
     """
     from_object = 'xml'
 
+    if config is None and config_dict is not None and 'config' in config_dict:
+        # Build a config object from to_dict of an ObjectStore.
+        config = Bunch(**config_dict["config"])
+    elif config is None:
+        raise Exception("build_object_store_from_config sent None as config parameter and one cannot be recovered from config_dict")
+
     if config_xml is None and config_dict is None:
         config_file = config.object_store_config_file
         if os.path.exists(config_file):