[APIv2] Refactor job cancel operation

Remove endpoint "/jobs/{job_id}/cancel" for cancelling a job.
we can request a cancelled state on a PATCH to the new /jobs/{job_id}
endpoint to make code more consistency.
The request body should be: {"info": {"status": "cancel"}}

Change-Id: I4a427d99e533979be42a84d388324ec2f933acc2
Partial-Implements: bp v2-api-experimental-impl

sahara/api/v2/jobs.py

@@ -63,17 +63,6 @@ def jobs_get(job_id):
     return u.render(result)
 
 
-@rest.get('/jobs/<job_id>/cancel')
-@acl.enforce("data-processing:job-executions:cancel")
-@v.check_exists(api.get_job_execution, id='job_id')
-@v.validate(None, v_j_e.check_job_execution_cancel)
-def jobs_cancel(job_id):
-    result = u.to_wrapped_dict_no_render(api.cancel_job_execution, job_id)
-    result['engine_job_id'] = result['oozie_job_id']
-    del result['oozie_job_id']
-    return u.render(result)
-
-
 @rest.patch('/jobs/<job_id>')
 @acl.enforce("data-processing:job-executions:modify")
 @v.check_exists(api.get_job_execution, id='job_id')

sahara/service/api/v2/jobs.py

@@ -83,24 +83,18 @@ def get_job_execution(id, refresh_status=False):
         return conductor.job_execution_get(context.ctx(), id)
 
 
-def cancel_job_execution(id):
-    context.set_current_job_execution_id(id)
-    job_execution = conductor.job_execution_get(context.ctx(), id)
-    api.OPS.cancel_job_execution(id)
-
-    return job_execution
-
-
 def update_job_execution(id, values):
-    _update_status(values.pop("info", None))
+    _update_status(values.pop("info", None), id)
     return conductor.job_execution_update(context.ctx(), id, values)
 
 
-def _update_status(info):
+def _update_status(info, id):
     if info:
         status = info.get("status", None)
         if status == edp.JOB_ACTION_SUSPEND:
             api.OPS.job_execution_suspend(id)
+        if status == edp.JOB_ACTION_CANCEL:
+            api.OPS.cancel_job_execution(id)
 
 
 def delete_job_execution(id):

sahara/service/validations/edp/job_execution_schema.py

@@ -74,7 +74,7 @@ JOB_EXEC_UPDATE_SCHEMA = {
             "type": "simple_config",
             "properties": {
                     "status": {
-                        "enum": ["suspend"]
+                        "enum": ["suspend", "cancel"]
                     }
             },
             "additionalProperties": False

sahara/utils/edp.py

@@ -89,9 +89,11 @@ JOB_TYPES_ACCEPTABLE_CONFIGS = {
 
 # job actions
 JOB_ACTION_SUSPEND = 'suspend'
+JOB_ACTION_CANCEL = 'cancel'
 
 JOB_ACTION_TYPES_ACCEPTABLE = [
-    JOB_ACTION_SUSPEND
+    JOB_ACTION_SUSPEND,
+    JOB_ACTION_CANCEL
 ]
 
 ADAPT_FOR_OOZIE = 'edp.java.adapt_for_oozie'