[GitHub] [airflow] mik-laj commented on a change in pull request #8818: Add support for Microsoft Azure Blob Storage in Google Cloud Storage Transfer Service operators

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mik-laj commented on a change in pull request #8818:
URL: https://github.com/apache/airflow/pull/8818#discussion_r545855543



##########
File path: airflow/providers/google/cloud/example_dags/example_cloud_storage_transfer_service_azure.py
##########
@@ -0,0 +1,200 @@
+#
+# 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.
+
+"""
+Example Airflow DAG that demonstrates interactions with Google Cloud Transfer.
+
+
+This DAG relies on the following OS environment variables
+
+* GCP_PROJECT_ID - Google Cloud Project to use for the Google Cloud Transfer Service.
+* GCP_DESCRIPTION - Description of transfer job
+* GCP_TRANSFER_SOURCE_AZURE_CONTAINER - Azure Storage container from which files are copied.
+  .. warning::
+    You need to provide a large enough set of data so that operations do not execute too quickly.
+    Otherwise, DAG will fail.
+* GCP_TRANSFER_AZURE_STORAGE_ACCOUNT - Azure Storage account
+  https://docs.microsoft.com/en-us/azure/storage/common/storage-introduction#types-of-storage-accounts
+* GCP_TRANSFER_SECOND_TARGET_BUCKET - Google Cloud Storage bucket bucket to which files are copied
+* WAIT_FOR_OPERATION_POKE_INTERVAL - interval of what to check the status of the operation
+  A smaller value than the default value accelerates the system test and ensures its correct execution with
+  smaller quantities of files in the source bucket
+  Look at documentation of :class:`~airflow.operators.sensors.BaseSensorOperator` for more information
+
+"""
+
+import os
+from datetime import datetime, timedelta
+
+from airflow import models
+from airflow.providers.google.cloud.hooks.cloud_storage_transfer_service import (
+    ALREADY_EXISTING_IN_SINK,
+    AZURE_BS_ACCOUNT,
+    AZURE_BS_DATA_SOURCE,
+    AZURE_CONTAINER,
+    BUCKET_NAME,
+    DESCRIPTION,
+    FILTER_JOB_NAMES,
+    FILTER_PROJECT_ID,
+    GCS_DATA_SINK,
+    JOB_NAME,
+    PROJECT_ID,
+    SCHEDULE,
+    SCHEDULE_END_DATE,
+    SCHEDULE_START_DATE,
+    START_TIME_OF_DAY,
+    STATUS,
+    TRANSFER_OPTIONS,
+    TRANSFER_SPEC,
+    GcpTransferJobsStatus,
+    GcpTransferOperationStatus,
+)
+from airflow.providers.google.cloud.operators.cloud_storage_transfer_service import (
+    CloudDataTransferServiceCancelOperationOperator,
+    CloudDataTransferServiceCreateJobOperator,
+    CloudDataTransferServiceDeleteJobOperator,
+    CloudDataTransferServiceGetOperationOperator,
+    CloudDataTransferServiceListOperationsOperator,
+    CloudDataTransferServicePauseOperationOperator,
+    CloudDataTransferServiceResumeOperationOperator,
+)
+from airflow.providers.google.cloud.sensors.cloud_storage_transfer_service import (
+    CloudDataTransferServiceJobStatusSensor,
+)
+
+GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
+GCP_DESCRIPTION = os.environ.get('GCP_DESCRIPTION', 'description')
+GCP_TRANSFER_TARGET_BUCKET = os.environ.get('GCP_TRANSFER_TARGET_BUCKET')
+WAIT_FOR_OPERATION_POKE_INTERVAL = int(os.environ.get('WAIT_FOR_OPERATION_POKE_INTERVAL', 5))
+
+GCP_TRANSFER_SOURCE_AZURE_CONTAINER = os.environ.get('GCP_TRANSFER_SOURCE_AZURE_CONTAINER')
+GCP_TRANSFER_AZURE_STORAGE_ACCOUNT = os.environ.get('GCP_TRANSFER_AZURE_STORAGE_ACCOUNT')
+GCP_TRANSFER_FIRST_TARGET_BUCKET = os.environ.get(
+    'GCP_TRANSFER_FIRST_TARGET_BUCKET', 'gcp-transfer-first-target'
+)
+
+GCP_TRANSFER_JOB_NAME = os.environ.get('GCP_TRANSFER_JOB_NAME', 'transferJobs/sampleJob')
+
+# [START howto_operator_gcp_transfer_create_job_body_aws]
+azure_to_gcs_transfer_body = {
+    DESCRIPTION: GCP_DESCRIPTION,
+    STATUS: GcpTransferJobsStatus.ENABLED,
+    PROJECT_ID: GCP_PROJECT_ID,
+    JOB_NAME: GCP_TRANSFER_JOB_NAME,
+    SCHEDULE: {
+        SCHEDULE_START_DATE: datetime(2015, 1, 1).date(),
+        SCHEDULE_END_DATE: datetime(2030, 1, 1).date(),
+        START_TIME_OF_DAY: (datetime.utcnow() + timedelta(minutes=2)).time(),
+    },
+    TRANSFER_SPEC: {
+        AZURE_BS_DATA_SOURCE: {
+            AZURE_BS_ACCOUNT: GCP_TRANSFER_AZURE_STORAGE_ACCOUNT,
+            AZURE_CONTAINER: GCP_TRANSFER_SOURCE_AZURE_CONTAINER,
+        },
+        GCS_DATA_SINK: {BUCKET_NAME: GCP_TRANSFER_FIRST_TARGET_BUCKET},
+        TRANSFER_OPTIONS: {ALREADY_EXISTING_IN_SINK: True},
+    },
+}
+# [END howto_operator_gcp_transfer_create_job_body_aws]
+
+
+# [START howto_operator_gcp_transfer_default_args]
+default_args = {'owner': 'airflow'}
+# [END howto_operator_gcp_transfer_default_args]
+
+with models.DAG(
+    'example_gcp_transfer_azure',
+    default_args=default_args,
+    schedule_interval=None,  # Override to match your needs
+    tags=['example'],
+) as dag:
+
+    # [START howto_operator_gcp_transfer_create_job]
+    create_transfer_job_from_azure = CloudDataTransferServiceCreateJobOperator(
+        task_id="create_transfer_job_from_aws", body=azure_to_gcs_transfer_body
+    )
+    # [END howto_operator_gcp_transfer_create_job]
+
+    wait_for_operation_to_start = CloudDataTransferServiceJobStatusSensor(
+        task_id="wait_for_operation_to_start",
+        job_name="{{task_instance.xcom_pull('create_transfer_job_from_aws')['name']}}",
+        project_id=GCP_PROJECT_ID,
+        expected_statuses={GcpTransferOperationStatus.IN_PROGRESS},
+        poke_interval=WAIT_FOR_OPERATION_POKE_INTERVAL,
+    )
+
+    # [START howto_operator_gcp_transfer_pause_operation]
+    pause_operation = CloudDataTransferServicePauseOperationOperator(
+        task_id="pause_operation",
+        operation_name="{{task_instance.xcom_pull('wait_for_operation_to_start', "
+        "key='sensed_operations')[0]['name']}}",
+    )
+    # [END howto_operator_gcp_transfer_pause_operation]
+
+    # [START howto_operator_gcp_transfer_list_operations]
+    list_operations = CloudDataTransferServiceListOperationsOperator(
+        task_id="list_operations",
+        request_filter={
+            FILTER_PROJECT_ID: GCP_PROJECT_ID,
+            FILTER_JOB_NAMES: ["{{task_instance.xcom_pull('create_transfer_job_from_aws')['name']}}"],
+        },
+    )
+    # [END howto_operator_gcp_transfer_list_operations]
+
+    # [START howto_operator_gcp_transfer_get_operation]
+    get_operation = CloudDataTransferServiceGetOperationOperator(
+        task_id="get_operation", operation_name="{{task_instance.xcom_pull('list_operations')[0]['name']}}"
+    )
+    # [END howto_operator_gcp_transfer_get_operation]
+
+    # [START howto_operator_gcp_transfer_resume_operation]
+    resume_operation = CloudDataTransferServiceResumeOperationOperator(
+        task_id="resume_operation", operation_name="{{task_instance.xcom_pull('get_operation')['name']}}"
+    )
+    # [END howto_operator_gcp_transfer_resume_operation]
+
+    # [START howto_operator_gcp_transfer_wait_operation]
+    wait_for_operation_to_end = CloudDataTransferServiceJobStatusSensor(
+        task_id="wait_for_operation_to_end",
+        job_name="{{task_instance.xcom_pull('create_transfer_job_from_aws')['name']}}",
+        project_id=GCP_PROJECT_ID,
+        expected_statuses={GcpTransferOperationStatus.SUCCESS},
+        poke_interval=WAIT_FOR_OPERATION_POKE_INTERVAL,
+    )
+    # [END howto_operator_gcp_transfer_wait_operation]
+
+    # [START howto_operator_gcp_transfer_cancel_operation]
+    cancel_operation = CloudDataTransferServiceCancelOperationOperator(
+        task_id="cancel_operation",
+        operation_name="{{task_instance.xcom_pull("
+        "'wait_for_second_operation_to_start', key='sensed_operations')[0]['name']}}",
+    )
+    # [END howto_operator_gcp_transfer_cancel_operation]
+
+    # [START howto_operator_gcp_transfer_delete_job]
+    delete_transfer_from_aws_job = CloudDataTransferServiceDeleteJobOperator(

Review comment:
       ```suggestion
       delete_transfer_from_job = CloudDataTransferServiceDeleteJobOperator(
   ```




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