add timeout param to Tasks API (closes elastic#852) (elastic#853)

Author: rooterkyberian

elasticsearch/client/tasks.py

@@ -2,7 +2,7 @@
 
 class TasksClient(NamespacedClient):
  @query_params('actions', 'detailed', 'group_by', 'nodes',
- 'parent_task_id', 'wait_for_completion')
+ 'parent_task_id', 'wait_for_completion', 'timeout')
  def list(self, params=None):
  """
  `<http://www.elastic.co/guide/en/elasticsearch/reference/current/tasks.html>`_
@@ -20,6 +20,7 @@ def list(self, params=None):
  (node_id:task_number). Set to -1 to return all.
  :arg wait_for_completion: Wait for the matching tasks to complete
  (default: false)
+ :arg timeout: Maximum waiting time for `wait_for_completion`
  """
  return self.transport.perform_request('GET', '/_tasks', params=params)
 
@@ -43,7 +44,7 @@ def cancel(self, task_id=None, params=None):
  return self.transport.perform_request('POST', _make_path('_tasks',
  task_id, '_cancel'), params=params)
 
- @query_params('wait_for_completion')
+ @query_params('wait_for_completion', 'timeout')
  def get(self, task_id=None, params=None):
  """
  Retrieve information for a particular task.
@@ -52,6 +53,7 @@ def get(self, task_id=None, params=None):
  :arg task_id: Return the task with specified id (node_id:task_number)
  :arg wait_for_completion: Wait for the matching tasks to complete
  (default: false)
+ :arg timeout: Maximum waiting time for `wait_for_completion`
  """
  return self.transport.perform_request('GET', _make_path('_tasks',
  task_id), params=params)