Generic Object method calling

[jntullo]

Adds calling of custom automate methods on Generic Objects.

Dependent upon ManageIQ/manageiq#16077 and ManageIQ/manageiq-automation_engine#74

Sample response with custom actions

{  
   "href":"http://localhost:3000/api/generic_objects/10000000000001",
   "name":"GO 2",
   ...
   "property_attributes":{  
      "start":true
   },
   "actions":[  
      {  
         "name":"edit",
         "method":"post",
         "href":"http://localhost:3000/api/generic_objects/10000000000001"
      },
     ...
      {  
         "name":"test_method",
         "method":"post",
         "href":"http://localhost:3000/api/generic_objects/10000000000001"
      },
      {  
         "name":"test_method_params",
         "method":"post",
         "href":"http://localhost:3000/api/generic_objects/10000000000001"
      }
   ]
}

Sample request for calling a method with parameters

This request sends in two numbers as an array (2 and 3) and adds them together, which can be seen from the task_results when checking the task after automate has executed the method.

Request:

{
  "action": "test_method_params",
  "parameters": [
    2,
    3
  ]
}

Response:

{  
   "success":true,
   "message":"Invoked method test_method_params for Generic Object id: 10000000000001",
   "task_id":"10000000245798",
   "task_href":"http://localhost:3000/api/tasks/10000000245798",
   "href":"http://localhost:3000/api/generic_objects/10000000245798"
}

Automate Method:

$evm.root['method_result'] = $evm.inputs['another_param'] + $evm.inputs['a_param']

Response from checking the task after automate completed:

GET http://localhost:3000/api/tasks/10000000245798?attributes=task_results
{  
   "href":"http://localhost:3000/api/tasks/10000000245798",
   "id":"10000000245798",
   "name":"Invoked method test_method_params for Generic Object id: 10000000000001",
   "state":"Finished",
   "status":"Ok",
   "message":"Task completed successfully",
   "userid":"admin",
   "created_on":"2017-10-06T14:09:09Z",
   "updated_on":"2017-10-06T14:09:15Z",
   "miq_server_id":"10000000000019",
   "task_results":5
}

Sample call with output from automate.log:

@miq-bot add_label enhancement, wip
@miq-bot assign @abellotti

[miq-bot]

This pull request is not mergeable. Please rebase and repush.

[mkanoor]

@jntullo
Couldn't we just add the :user_id, :group_id, :tenant_id here.
I am guessing this call is only for calling the generic object methods

[miq-bot]

Checked commits jntullo/manageiq-api@376e1a2~...0ada42c with ruby 2.3.3, rubocop 0.47.1, and haml-lint 0.20.0
3 files checked, 0 offenses detected
Everything looks fine. 👍

[mkanoor]

@jntullo Is this still needed? I think you replaced it with ':user'

[abellotti]

Just kicked the tire here, LGTM !! Thanks @jntullo for this API Enhancement. 👍