Renaming folder structure

[osm/MON.git] / osm_mon / plugins / OpenStack / settings.py

diff --git a/osm_mon/plugins/OpenStack/settings.py b/osm_mon/plugins/OpenStack/settings.py
new file mode 100644 (file)
index 0000000..fe80641
--- /dev/null
+++ b/osm_mon/plugins/OpenStack/settings.py
@@ -0,0 +1,95 @@
+# Copyright 2017 Intel Research and Development Ireland Limited
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Intel Corporation
+
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+
+#         http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: helena.mcgough@intel.com or adrian.hoban@intel.com
+##
+"""Configurations for the OpenStack plugins."""
+
+import logging
+import os
+
+from collections import namedtuple
+
+from plugins.OpenStack.singleton import Singleton
+
+import six
+
+__author__ = "Helena McGough"
+
+log = logging.getLogger(__name__)
+
+
+class BadConfigError(Exception):
+    """Configuration exception."""
+
+    pass
+
+
+class CfgParam(namedtuple('CfgParam', ['key', 'default', 'data_type'])):
+    """Configuration parameter definition."""
+
+    def value(self, data):
+        """Convert a string to the parameter type."""
+        try:
+            return self.data_type(data)
+        except (ValueError, TypeError):
+            raise BadConfigError(
+                'Invalid value "%s" for configuration parameter "%s"' % (
+                    data, self.key))
+
+
+@Singleton
+class Config(object):
+    """Plugin confguration."""
+
+    _configuration = [
+        CfgParam('OS_AUTH_URL', None, six.text_type),
+        CfgParam('OS_IDENTITY_API_VERSION', "3", six.text_type),
+        CfgParam('OS_USERNAME', None, six.text_type),
+        CfgParam('OS_PASSWORD', "password", six.text_type),
+        CfgParam('OS_TENANT_NAME', "service", six.text_type),
+    ]
+
+    _config_dict = {cfg.key: cfg for cfg in _configuration}
+    _config_keys = _config_dict.keys()
+
+    def __init__(self):
+        """Set the default values."""
+        for cfg in self._configuration:
+            setattr(self, cfg.key, cfg.default)
+
+    def read_environ(self, service):
+        """Check the appropriate environment variables and update defaults."""
+        for key in self._config_keys:
+            try:
+                if (key == "OS_IDENTITY_API_VERSION" or key == "OS_PASSWORD"):
+                    val = str(os.environ[key])
+                    setattr(self, key, val)
+                elif (key == "OS_AUTH_URL"):
+                    val = str(os.environ[key]) + "/v3"
+                    setattr(self, key, val)
+                else:
+                    # Default username for a service is it's name
+                    setattr(self, 'OS_USERNAME', service)
+                    log.info("Configuration complete!")
+                    return
+            except KeyError as exc:
+                log.warn("Falied to configure plugin: %s", exc)
+                log.warn("Try re-authenticating your OpenStack deployment.")
+        return