Filter workflow executions by creating task execution id

This will enable the mistral UI to go from task execution screen
to the workflow execution screen of the workflow execution created
by the task.

Change-Id: Ia2ac765a26acc8dcd27134f5f467cddef03fea95
Implements: blueprint filter-workflow-executions-by-creating-task-id

functionaltests/resources/v2/wf_wrapping_wf_v2.yaml

@@ -0,0 +1,8 @@
+---
+version: '2.0'
+
+wrapping_wf:
+  type: direct
+  tasks:
+    hello:
+      workflow: wf

mistralclient/api/v2/executions.py

@@ -69,9 +69,13 @@ class ExecutionManager(base.ResourceManager):
 
         return self._update('/executions/%s' % id, data)
 
-    def list(self, marker='', limit=None, sort_keys='', sort_dirs=''):
+    def list(self, task=None, marker='', limit=None, sort_keys='',
+             sort_dirs=''):
         qparams = {}
 
+        if task:
+            qparams['task_execution_id'] = task
+
         if marker:
             qparams['marker'] = marker
 

mistralclient/commands/v2/executions.py

@@ -76,7 +76,12 @@ class List(base.MistralLister):
 
     def get_parser(self, parsed_args):
         parser = super(List, self).get_parser(parsed_args)
-
+        parser.add_argument(
+            '--task',
+            nargs='?',
+            help="Parent task execution ID associated with workflow "
+                 "execution list.",
+        )
         parser.add_argument(
             '--marker',
             type=str,
@@ -113,6 +118,7 @@ class List(base.MistralLister):
     def _get_resources(self, parsed_args):
         mistral_client = self.app.client_manager.workflow_engine
         return mistral_client.executions.list(
+            task=parsed_args.task,
             marker=parsed_args.marker,
             limit=parsed_args.limit,
             sort_keys=parsed_args.sort_keys,

mistralclient/tests/functional/cli/v2/base_v2.py

@@ -51,6 +51,10 @@ class MistralClientTestBase(base.MistralCLIAuth, base.MistralCLIAltAuth):
             'functionaltests/resources/v2/wf_delay_v2.yaml', os.getcwd()
         )
 
+        cls.wf_wrapping_wf = os.path.relpath(
+            'functionaltests/resources/v2/wf_wrapping_wf_v2.yaml', os.getcwd()
+        )
+
         cls.act_def = os.path.relpath(
             'functionaltests/resources/v2/action_v2.yaml', os.getcwd()
         )

mistralclient/tests/functional/cli/v2/cli_tests_v2.py

@@ -501,14 +501,38 @@ class ExecutionCLITests(base_v2.MistralClientTestBase):
 
         self.assertEqual([], ex_output)
 
+    def test_executions_list_with_task(self):
+        wrapping_wf = self.workflow_create(self.wf_wrapping_wf)
+        decoy = self.execution_create(wrapping_wf[-1]['Name'])
+        wrapping_wf_ex = self.execution_create(wrapping_wf[-1]['Name'])
+
+        wrapping_wf_ex_id = self.get_field_value(wrapping_wf_ex, 'ID')
+
+        self.assertIsNot(wrapping_wf_ex_id, self.get_field_value(decoy, 'ID'))
+
+        tasks = self.mistral_admin(
+            'task-list',
+            params=wrapping_wf_ex_id
+        )
+
+        wrapping_task_id = tasks[-1]['ID']
+
+        wf_execs = self.mistral_cli(
+            True,
+            'execution-list',
+            params="--task {}".format(wrapping_task_id)
+        )
+
+        self.assertEqual(1, len(wf_execs))
+        wf_exec = wf_execs[0]
+        self.assertEqual(wrapping_task_id, wf_exec['Task Execution ID'])
+
     def test_executions_list_with_pagination(self):
-        wf_ex1 = self.mistral_admin(
-            'execution-create',
+        wf_ex1 = self.execution_create(
             params='{0} -d "a"'.format(self.direct_wf['Name'])
         )
 
-        wf_ex2 = self.mistral_admin(
-            'execution-create',
+        wf_ex2 = self.execution_create(
             params='{0} -d "b"'.format(self.direct_wf['Name'])
         )
 

mistralclient/tests/unit/v2/test_cli_executions.py

@@ -232,7 +232,8 @@ class TestCLIExecutionsV2(base.BaseCommandTest):
             limit=None,
             marker='',
             sort_dirs='asc',
-            sort_keys='created_at'
+            sort_keys='created_at',
+            task=None
         )
 
         self.call(
@@ -249,7 +250,8 @@ class TestCLIExecutionsV2(base.BaseCommandTest):
             limit=5,
             marker='abc',
             sort_dirs='id, Workflow',
-            sort_keys='desc'
+            sort_keys='desc',
+            task=None
         )
 
     def test_get(self):