Add docstrings for Metric resources

This also adds a file to get metric.v1.resource included

Change-Id: I37673c6ce0d2a57e30f52d916a0d75804cefedf8

doc/source/users/resources/metric/index.rst

@@ -7,3 +7,4 @@ Metric Resources
    v1/archive_policy
    v1/capabilities
    v1/metric
+   v1/resource

doc/source/users/resources/metric/v1/resource.rst

@@ -0,0 +1,12 @@
+openstack.metric.v1.resource
+============================
+
+.. automodule:: openstack.metric.v1.resource
+
+The Generic Class
+-----------------
+
+The ``Generic`` class inherits from :class:`~openstack.resource.Resource`.
+
+.. autoclass:: openstack.metric.v1.resource.Generic
+   :members:

openstack/metric/v1/archive_policy.py

@@ -27,7 +27,11 @@ class ArchivePolicy(resource.Resource):
     id_attribute = "name"
 
     # Properties
+    #: The name of this policy
     name = resource.prop('name')
+    #: The definition of this policy
     definition = resource.prop('definition', type=list)
+    #: The window of time older than the period that archives can be requested
     back_window = resource.prop('back_window')
+    #: A list of the aggregation methods supported
     aggregation_methods = resource.prop("aggregation_methods", type=list)

openstack/metric/v1/metric.py

@@ -25,9 +25,15 @@ class Metric(resource.Resource):
     allow_list = True
 
     # Properties
+    #: The name of the archive policy
     archive_policy_name = resource.prop('archive_policy_name')
+    #: The archive policy
     archive_policy = resource.prop('archive_policy')
+    #: The ID of the user who created this metric
     created_by_user_id = resource.prop('created_by_user_id')
+    #: The ID of the project this metric was created under
     created_by_project_id = resource.prop('created_by_project_id')
+    #: The identifier of this metric
     resource_id = resource.prop('resource_id')
+    #: The name of this metric
     name = resource.prop('name')

openstack/metric/v1/resource.py

@@ -26,15 +26,23 @@ class Generic(resource.Resource):
     allow_update = True
 
     # Properties
+    #: The identifier of this resource
     id = resource.prop('id', alias="resource_id")
+    #: The ID of the user who created this resource
     created_by_user_id = resource.prop('created_by_user_id')
+    #: The ID of the project this resource was created under
     created_by_project_id = resource.prop('created_by_project_id')
+    #: The ID of the user
     user_id = resource.prop('user_id')
+    #: The ID of the project
     project_id = resource.prop('project_id')
+    #: Timestamp when this resource was started
     started_at = resource.prop('started_at',
                                type=resource_types.ISO8601Datetime)
+    #: Timestamp when this resource was ended
     ended_at = resource.prop('ended_at',
                              type=resource_types.ISO8601Datetime)
+    #: A dictionary of metrics collected on this resource
     metrics = resource.prop('metrics', type=dict)
 
     def create(self, session):