Add '--filter' parameter to list commands in CLI

* This patch adds filtering capabilities into CLI after the
  previous patch.

TODO:
* Functional tests

Change-Id: Icfce86be0fa1c9e585f626ee2e3a95772c7104f0

mistralclient/commands/v2/actions.py

@@ -70,10 +70,24 @@ class List(base.MistralLister):
     def _get_format_function(self):
         return format_list
 
+    def get_parser(self, prog_name):
+        parser = super(List, self).get_parser(prog_name)
+
+        parser.add_argument(
+            '--filter',
+            dest='filters',
+            action='append',
+            help='Filters. Can be repeated.'
+        )
+
+        return parser
+
     def _get_resources(self, parsed_args):
         mistral_client = self.app.client_manager.workflow_engine
 
-        return mistral_client.actions.list()
+        return mistral_client.actions.list(
+            **base.get_filters(parsed_args)
+        )
 
 
 class Get(command.ShowOne):

mistralclient/commands/v2/base.py

@@ -65,3 +65,18 @@ def wrap(string, width=25):
         return textwrap.fill(string, width)
     else:
         return string
+
+
+def get_filters(parsed_args):
+    filters = {}
+
+    if parsed_args.filters:
+        for f in parsed_args.filters:
+            arr = f.split('=')
+
+            if len(arr) != 2:
+                raise ValueError('Invalid filter: %s' % f)
+
+            filters[arr[0]] = arr[1]
+
+    return filters

mistralclient/commands/v2/executions.py

@@ -112,17 +112,25 @@ class List(base.MistralLister):
             default='asc',
             nargs='?'
         )
+        parser.add_argument(
+            '--filter',
+            dest='filters',
+            action='append',
+            help='Filters. Can be repeated.'
+        )
 
         return parser
 
     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,
-            sort_dirs=parsed_args.sort_dirs
+            sort_dirs=parsed_args.sort_dirs,
+            **base.get_filters(parsed_args)
         )
 
 

mistralclient/commands/v2/tasks.py

@@ -72,7 +72,14 @@ class List(base.MistralLister):
         parser.add_argument(
             'workflow_execution',
             nargs='?',
-            help='Workflow execution ID associated with list of Tasks.')
+            help='Workflow execution ID associated with list of Tasks.'
+        )
+        parser.add_argument(
+            '--filter',
+            dest='filters',
+            action='append',
+            help='Filters. Can be repeated.'
+        )
 
         return parser
 
@@ -82,7 +89,10 @@ class List(base.MistralLister):
     def _get_resources(self, parsed_args):
         mistral_client = self.app.client_manager.workflow_engine
 
-        return mistral_client.tasks.list(parsed_args.workflow_execution)
+        return mistral_client.tasks.list(
+            parsed_args.workflow_execution,
+            **base.get_filters(parsed_args)
+        )
 
 
 class Get(command.ShowOne):

mistralclient/commands/v2/workflows.py

@@ -65,9 +65,24 @@ class List(base.MistralLister):
     def _get_format_function(self):
         return format_list
 
+    def get_parser(self, prog_name):
+        parser = super(List, self).get_parser(prog_name)
+
+        parser.add_argument(
+            '--filter',
+            dest='filters',
+            action='append',
+            help='Filters. Can be repeated.'
+        )
+
+        return parser
+
     def _get_resources(self, parsed_args):
         mistral_client = self.app.client_manager.workflow_engine
-        return mistral_client.workflows.list()
+
+        return mistral_client.workflows.list(
+            **base.get_filters(parsed_args)
+        )
 
 
 class Get(show.ShowOne):