1 files changed, 42 insertions, 0 deletions
diff --git a/src/python/lmi/providers/__init__.py b/src/python/lmi/providers/__init__.py
new file mode 100644
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+++ b/src/python/lmi/providers/__init__.py
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+# Software Management Providers
+#
+# Copyright (C) 2012-2013 Red Hat, Inc.  All rights reserved.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# Authors: Michal Minar <miminar@redhat.com>
+#
+
+"""
+Common utilities for OpenLMI python providers.
+"""
+def parse_instance_id(instance_id, classname=None):
+    """
+    Parse InstanceID, check it has LMI:<classname>:<ID> format and return
+    the ID. Return None if the format is bad.
+    :param instance_id: (``string``) String to parse.
+    :param classname: (``string``) Name of class, whose InstanceID we parse.
+        If the classname is None, it won't be checked.
+    :returns: ``string`` with the ID.
+    """
+    parts = instance_id.split(":", 2)
+    if len(parts) != 3:
+        return None
+    if parts[0] != "LMI":
+        return None
+    real_classname = parts[1]
+    if classname and real_classname.lower() != classname.lower():
+        return None
+    return parts[2]