Add docs for the workflow service

Initial docs for workflow. Doesn't include a user guide as I don't know
how to use it.

Change-Id: I7fa19fbb4cd6684782b8fc7a424d871a8b5d93ad

doc/source/users/index.rst

@@ -80,6 +80,7 @@ but listed below are the ones provided by this SDK by default.
    Object Store <proxies/object_store>
    Orchestration <proxies/orchestration>
    Telemetry <proxies/telemetry>
+   Workflow <proxies/workflow>
 
 Resource Interface
 ******************
@@ -108,6 +109,7 @@ The following services have exposed *Resource* classes.
    Orchestration <resources/orchestration/index>
    Object Store <resources/object_store/index>
    Telemetry <resources/telemetry/index>
+   Workflow <resources/workflow/index>
 
 Low-Level Classes
 *****************

doc/source/users/proxies/workflow.rst

@@ -0,0 +1,16 @@
+Workflow API
+============
+
+For details on how to use block_store, see :doc:`/users/guides/block_store`
+
+.. automodule:: openstack.workflow.v2._proxy
+
+The Workflow Class
+------------------
+
+The workflow high-level interface is available through the ``workflow``
+member of a :class:`~openstack.connection.Connection` object.
+The ``workflow`` member will only be added if the service is detected.
+
+.. autoclass:: openstack.workflow.v2._proxy.Proxy
+   :members:

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

@@ -0,0 +1,8 @@
+Object Store Resources
+======================
+
+.. toctree::
+   :maxdepth: 1
+
+   v2/execution
+   v2/workflow

doc/source/users/resources/workflow/v2/execution.rst

@@ -0,0 +1,12 @@
+openstack.workflow.v2.execution
+===============================
+
+.. automodule:: openstack.workflow.v2.execution
+
+The Execution Class
+-------------------
+
+The ``Execution`` class inherits from :class:`~openstack.resource.Resource`.
+
+.. autoclass:: openstack.workflow.v2.execution
+   :members:

doc/source/users/resources/workflow/v2/workflow.rst

@@ -0,0 +1,12 @@
+openstack.workflow.v2.workflow
+==============================
+
+.. automodule:: openstack.workflow.v2.workflow
+
+The Workflow Class
+------------------
+
+The ``Workflow`` class inherits from :class:`~openstack.resource.Resource`.
+
+.. autoclass:: openstack.workflow.v2.workflow
+   :members:

openstack/workflow/v2/execution.py

@@ -30,15 +30,26 @@ class Execution(resource.Resource):
         'marker', 'limit', 'sort_keys', 'sort_dirs', 'fields', 'params',
         'include_output')
 
+    #: The name of the workflow
     workflow_name = resource.Body("workflow_name")
+    #: The ID of the workflow
     workflow_id = resource.Body("workflow_id")
+    #: A description of the workflow execution
     description = resource.Body("description")
+    #: A reference to the parent task execution
     task_execution_id = resource.Body("task_execution_id")
+    #: Status can be one of: IDLE, RUNNING, SUCCESS, ERROR, or PAUSED
     status = resource.Body("state")
+    #: An optional information string about the status
     status_info = resource.Body("state_info")
+    #: A JSON structure containing workflow input values
+    # TODO(briancurtin): type=dict
     input = resource.Body("input")
+    #: The output of the workflow
     output = resource.Body("output")
+    #: The time at which the Execution was created
     created_at = resource.Body("created_at")
+    #: The time at which the Execution was updated
     updated_at = resource.Body("updated_at")
 
     def create(self, session, prepend_key=True):

openstack/workflow/v2/workflow.py

@@ -29,13 +29,23 @@ class Workflow(resource.Resource):
     _query_mapping = resource.QueryParameters(
         'marker', 'limit', 'sort_keys', 'sort_dirs', 'fields')
 
+    #: The name of this Workflow
     name = resource.Body("name")
+    #: The inputs for this Workflow
     input = resource.Body("input")
+    #: A Workflow definition using the Mistral v2 DSL
     definition = resource.Body("definition")
+    #: A list of values associated with a workflow that users can use
+    #: to group workflows by some criteria
+    # TODO(briancurtin): type=list
     tags = resource.Body("tags")
+    #: Can be either "private" or "public"
     scope = resource.Body("scope")
+    #: The ID of the associated project
     project_id = resource.Body("project_id")
+    #: The time at which the workflow was created
     created_at = resource.Body("created_at")
+    #: The time at which the workflow was created
     updated_at = resource.Body("updated_at")
 
     def create(self, session, prepend_key=True):