text: #!./redfish-venv/bin/python
  # -*- coding: utf-8 -*-
  
  # Copyright (2017) Hewlett Packard Enterprise Development LP
  #
  # 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.
  
  # Python libs
  import re
  from xml.dom import minidom
  import xml.etree.ElementTree as ET
  
  # Project libs
  from oneview_redfish_toolkit import util
  
  
  class Metadata(object):
      """Creates a redfish $metadata XML
  
      """
  
      def __init__(self, reference_list):
          """Constructor
  
              Populates self.redfish with a hardcoded odata values
          """
  
          metadata = ET.Element("edmx:Edmx")
          metadata.set(
              "xmlns:edmx", "http://docs.oasis-open.org/odata/ns/edmx")
          metadata.set("Version", "4.0")
          for key in reference_list:
              reference = ET.SubElement(metadata, "edmx:Reference")
              reference.set(
                  "Uri",
                  "http://redfish.dmtf.org/schemas/v1/{}_v1.xml".format(key))
              include = ET.SubElement(reference, "edmx:Include")
              include.set("Namespace", key)
              if key.find('Collection') == -1:
                  include2 = ET.SubElement(reference, "edmx:Include")
                  file_version = re.search(
                      '.+\.v(\d+_\d+_\d+)\.json', reference_list[key]).group(1)
                  file_version = file_version.replace("_", ".")
                  include2.set("Namespace", key + "." + file_version)
          reference = ET.SubElement(metadata, "edmx:Reference")
          reference.set(
              "Uri",
              "http://redfish.dmtf.org/schemas/v1/RedfishExtensions_v1.xml")
          include = ET.SubElement(reference, "edmx:Include")
          include.set("Namespace", "RedfishExtensions.1.0.0")
          include.set("Alias", "RedfishExtensions")
          data_services = ET.SubElement(metadata, "edmx:DataServices")
          schema = ET.SubElement(data_services, "Schema")
          schema.set("NameSpace", "Service")
          entity_container = ET.SubElement(schema, "EntityContainer")
          entity_container.set("Name", "Service")
          entity_container.set("Extends", "ServiceRoot.1.0.0.ServiceContainer")
  
          self.metadata = metadata
  
      def serialize(self):
          xml_str = ET.tostring(self.metadata, encoding="UTF-8").decode("UTF-8")
          # If prettify
          if util.config['redfish']['xml_prettify'] == "True":
              return minidom.parseString(xml_str).toprettyxml(
                  encoding="UTF-8", indent="    ").decode("UTF-8")
          else:
              return xml_str
  