return args
 
-    def _dispatch_post(self):
+    def _dispatch_post(self, **kwargs):
         action, args = self._post_args()
+        args.update(kwargs)
         return self._dispatch(args, action)
 
     def _dispatch(self, args, action):
 
 from api import ApiResource
 from api.database.v2.handlers import V2TaskHandler
 from api.database.v2.handlers import V2ProjectHandler
+from api.database.v2.handlers import V2EnvironmentHandler
 from yardstick.common.utils import result_handler
 from yardstick.common import constants as consts
 
         project_handler.append_attr(project_id, {'tasks': task_id})
 
         return result_handler(consts.API_SUCCESS, {'uuid': task_id})
+
+
+class V2Task(ApiResource):
+
+    def put(self, task_id):
+
+        try:
+            uuid.UUID(task_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid task id')
+
+        task_handler = V2TaskHandler()
+        try:
+            task_handler.get_by_uuid(task_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such task id')
+
+        return self._dispatch_post(task_id=task_id)
+
+    def add_environment(self, args):
+
+        task_id = args['task_id']
+        try:
+            environment_id = args['environment_id']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'environment_id must be provided')
+
+        try:
+            uuid.UUID(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid environment id')
+
+        environment_handler = V2EnvironmentHandler()
+        try:
+            environment_handler.get_by_uuid(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such environment id')
+
+        LOG.info('update environment_id in task')
+        task_handler = V2TaskHandler()
+        task_handler.update_attr(task_id, {'environment_id': environment_id})
+
+        return result_handler(consts.API_SUCCESS, {'uuid': task_id})