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From GitBox <...@apache.org>
Subject [GitHub] bkvarda commented on a change in pull request #4134: [AIRFLOW-3213] Create ADLS to GCS operator
Date Sun, 18 Nov 2018 02:28:13 GMT
bkvarda commented on a change in pull request #4134: [AIRFLOW-3213] Create ADLS to GCS operator
URL: https://github.com/apache/incubator-airflow/pull/4134#discussion_r234427351
 
 

 ##########
 File path: airflow/contrib/operators/adls_to_gcs.py
 ##########
 @@ -0,0 +1,145 @@
+# -*- coding: utf-8 -*-
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import os
+from tempfile import NamedTemporaryFile
+
+from airflow.contrib.hooks.azure_data_lake_hook import AzureDataLakeHook
+from airflow.contrib.operators.adls_list_operator import AzureDataLakeStorageListOperator
+from airflow.contrib.hooks.gcs_hook import GoogleCloudStorageHook, _parse_gcs_url
+from airflow.utils.decorators import apply_defaults
+
+
+class AdlsToGoogleCloudStorageOperator(AzureDataLakeStorageListOperator):
+    """
+    Synchronizes an Azure Data Lake Storage path with a GCS bucket
+    :param src_adls: The Azure Data Lake path to find the objects (templated)
+    :type src_adls: str
+    :param dest_gcs: The Google Cloud Storage bucket and prefix to
+        store the objects. (templated)
+    :type dest_gcs: str
+    :param replace: If true, replaces same-named files in GCS
+    :type replace: bool
+    :param azure_data_lake_conn_id: The connection ID to use when
+        connecting to Azure Data Lake Storage.
+    :type azure_data_lake_conn_id: 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
+
+    **Examples**:
+        The following Operator would copy a single file named
+        ``hello/world.avro`` from ADLS to the GCS bucket ``mybucket``. Its full
+        resulting gcs path will be ``gs://mybucket/hello/world.avro`` ::
+            copy_single_file = AdlsToGoogleCloudStorageOperator(
+                task_id='copy_single_file',
+                path='hello/world.avro',
+                dest_gcs='gs://mybucket',
+                replace=False,
+                azure_data_lake_conn_id='azure_data_lake_default',
+                google_cloud_storage_conn_id='google_cloud_default'
+            )
+
+        The following Operator would copy all parquet files from ADLS
+        to the GCS bucket ``mybucket``. ::
+            copy_all_files = AdlsToGoogleCloudStorageOperator(
+                task_id='copy_all_files',
+                path='*.parquet',
+                dest_gcs='gs://mybucket',
+                replace=False,
+                azure_data_lake_conn_id='azure_data_lake_default',
+                google_cloud_storage_conn_id='google_cloud_default'
+            )
+
+         The following Operator would copy all parquet files from ADLS
+         path ``/hello/world``to the GCS bucket ``mybucket``. ::
+            copy_world_files = AdlsToGoogleCloudStorageOperator(
+                task_id='copy_world_files',
+                path='hello/world/*.parquet',
 
 Review comment:
   fixed

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