:mod:`airflow.contrib.operators.gcs_list_operator`
==================================================

.. py:module:: airflow.contrib.operators.gcs_list_operator


Module Contents
---------------

.. py:class:: GoogleCloudStorageListOperator(bucket, prefix=None, delimiter=None, google_cloud_storage_conn_id='google_cloud_default', delegate_to=None, *args, **kwargs)

   Bases: :class:`airflow.models.BaseOperator`

   List all objects from the bucket with the give string prefix and delimiter in name.

   This operator returns a python list with the name of objects which can be used by
    `xcom` in the downstream task.

   :param bucket: The Google cloud storage bucket to find the objects. (templated)
   :type bucket: str
   :param prefix: Prefix string which filters objects whose name begin with
          this prefix. (templated)
   :type prefix: str
   :param delimiter: The delimiter by which you want to filter the objects. (templated)
       For e.g to lists the CSV files from in a directory in GCS you would use
       delimiter='.csv'.
   :type delimiter: str
   :param google_cloud_storage_conn_id: The connection ID to use when
       connecting to Google cloud storage.
   :type google_cloud_storage_conn_id: str
   :param delegate_to: The account to impersonate, if any.
       For this to work, the service account making the request must have
       domain-wide delegation enabled.
   :type delegate_to: str

   **Example**:
       The following Operator would list all the Avro files from ``sales/sales-2017``
       folder in ``data`` bucket. ::

           GCS_Files = GoogleCloudStorageListOperator(
               task_id='GCS_Files',
               bucket='data',
               prefix='sales/sales-2017/',
               delimiter='.avro',
               google_cloud_storage_conn_id=google_cloud_conn_id
           )

   .. attribute:: template_fields
      :annotation: :Iterable[str] = ['bucket', 'prefix', 'delimiter']

      
   .. attribute:: ui_color
      :annotation: = #f0eee4

      
   .. method:: execute(self, context)