Returns a list of tasks.
$params['actions'] = (any) Comma-separated list or wildcard expression of actions used to limit the request.
$params['detailed'] = (boolean) If true, the response includes detailed information about shard recoveries. (Default = false)
$params['group_by'] = (enum) Key used to group tasks in the response. (Options = nodes,none,parents)
$params['nodes'] = (array) Comma-separated list of node IDs or names to limit the returned information; use _local to return information from the node you're connecting to, leave empty to get information from all nodes.
$params['parent_task_id'] = (string) Parent task ID used to limit returned information. To return all tasks, omit this parameter or use a value of -1.
$params['timeout'] = (string) Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.
$params['wait_for_completion'] = (boolean) If true, the request blocks until the operation is complete. (Default = false)
$params['pretty'] = (boolean) Whether to pretty format the returned JSON response. (Default = false)
$params['human'] = (boolean) Whether to return human readable values for statistics. (Default = true)
$params['error_trace'] = (boolean) Whether to include the stack trace of returned errors. (Default = false)
$params['source'] = (string) The URL-encoded request definition. Useful for libraries that do not accept a request body for non-POST requests.
$params['filter_path'] = (any) Used to reduce the response. This parameter takes a comma-separated list of filters. It supports using wildcards to match any field or part of a field’s name. You can also exclude fields with "-".