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From GitBox <...@apache.org>
Subject [GitHub] kaxil closed pull request #4189: [AIRFLOW-3346] Add hook and operator for GCP transfer service.
Date Fri, 16 Nov 2018 23:54:52 GMT
kaxil closed pull request #4189: [AIRFLOW-3346] Add hook and operator for GCP transfer service.
URL: https://github.com/apache/incubator-airflow/pull/4189
 
 
   

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diff --git a/airflow/contrib/hooks/gcp_transfer_hook.py b/airflow/contrib/hooks/gcp_transfer_hook.py
new file mode 100644
index 0000000000..88534a5103
--- /dev/null
+++ b/airflow/contrib/hooks/gcp_transfer_hook.py
@@ -0,0 +1,107 @@
+# -*- 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 json
+import time
+import datetime
+from googleapiclient.discovery import build
+
+from airflow.exceptions import AirflowException
+from airflow.contrib.hooks.gcp_api_base_hook import GoogleCloudBaseHook
+
+# Time to sleep between active checks of the operation results
+TIME_TO_SLEEP_IN_SECONDS = 1
+
+
+# noinspection PyAbstractClass
+class GCPTransferServiceHook(GoogleCloudBaseHook):
+    """
+    Hook for GCP Storage Transfer Service.
+    """
+    _conn = None
+
+    def __init__(self,
+                 api_version='v1',
+                 gcp_conn_id='google_cloud_default',
+                 delegate_to=None):
+        super(GCPTransferServiceHook, self).__init__(gcp_conn_id, delegate_to)
+        self.api_version = api_version
+
+    def get_conn(self):
+        """
+        Retrieves connection to Google Storage Transfer service.
+
+        :return: Google Storage Transfer service object
+        :rtype: dict
+        """
+        if not self._conn:
+            http_authorized = self._authorize()
+            self._conn = build('storagetransfer', self.api_version,
+                               http=http_authorized, cache_discovery=False)
+        return self._conn
+
+    def create_transfer_job(self, project_id, transfer_spec, **kwargs):
+        conn = self.get_conn()
+        now = datetime.datetime.utcnow()
+        transfer_job = {
+            'status': 'ENABLED',
+            'projectId': project_id,
+            'transferSpec': transfer_spec,
+            'schedule': {
+                'scheduleStartDate': {
+                    'day': now.day,
+                    'month': now.month,
+                    'year': now.year,
+                },
+                'scheduleEndDate': {
+                    'day': now.day,
+                    'month': now.month,
+                    'year': now.year,
+                }
+            }
+        }
+        transfer_job.update(kwargs)
+        result = conn.transferJobs().create(body=transfer_job).execute()
+        self.wait_for_transfer_job(result, conn=conn)
+
+    def wait_for_transfer_job(self, job, conn=None):
+        conn = conn or self.get_conn()
+        while True:
+            result = conn.transferOperations().list(
+                name='transferOperations',
+                filter=json.dumps({
+                    'project_id': job['projectId'],
+                    'job_names': [job['name']],
+                }),
+            ).execute()
+            if self._check_operations_result(result):
+                return True
+            time.sleep(TIME_TO_SLEEP_IN_SECONDS)
+
+    def _check_operations_result(self, result):
+        operations = result.get('operations', [])
+        if len(operations) == 0:
+            return False
+        for operation in operations:
+            if operation['metadata']['status'] in {'FAILED', 'ABORTED'}:
+                raise AirflowException('Operation {} {}'.format(
+                    operation['name'], operation['metadata']['status']))
+            if operation['metadata']['status'] != 'SUCCESS':
+                return False
+        return True
diff --git a/airflow/contrib/operators/s3_to_gcs_transfer_operator.py b/airflow/contrib/operators/s3_to_gcs_transfer_operator.py
new file mode 100644
index 0000000000..e2fbf95b73
--- /dev/null
+++ b/airflow/contrib/operators/s3_to_gcs_transfer_operator.py
@@ -0,0 +1,124 @@
+# -*- 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.
+
+from airflow.models import BaseOperator
+from airflow.hooks.S3_hook import S3Hook
+from airflow.contrib.hooks.gcp_transfer_hook import GCPTransferServiceHook
+from airflow.utils.decorators import apply_defaults
+
+
+class S3ToGoogleCloudStorageTransferOperator(BaseOperator):
+    """
+    Synchronizes an S3 bucket with a Google Cloud Storage bucket using the
+    GCP Storage Transfer Service.
+
+    :param s3_bucket: The S3 bucket where to find the objects. (templated)
+    :type s3_bucket: str
+    :param gcs_bucket: The destination Google Cloud Storage bucket
+        where you want to store the files. (templated)
+    :type gcs_bucket: str
+    :param project_id: The ID of the Google Cloud Platform Console project that
+        owns the job
+    :type project_id: str
+    :param aws_conn_id: The source S3 connection
+    :type aws_conn_id: str
+    :param gcp_conn_id: The destination connection ID to use
+        when connecting to Google Cloud Storage.
+    :type gcp_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
+    :param object_conditions: Transfer service object conditions; see
+        https://cloud.google.com/storage-transfer/docs/reference/rest/v1/TransferSpec
+    :type object_conditions: dict
+    :param transfer_options: Transfer service transfer options; see
+        https://cloud.google.com/storage-transfer/docs/reference/rest/v1/TransferSpec
+    :type transfer_options: dict
+    :param job_kwargs: Additional transfer job options; see
+        https://cloud.google.com/storage-transfer/docs/reference/rest/v1/transferJobs
+    :type job_kwargs: dict
+
+    **Example**:
+
+    .. code-block:: python
+
+       s3_to_gcs_transfer_op = S3ToGoogleCloudStorageTransferOperator(
+            task_id='s3_to_gcs_transfer_example',
+            s3_bucket='my-s3-bucket',
+            project_id='my-gcp-project',
+            gcs_bucket='my-gcs-bucket',
+            dag=my_dag)
+    """
+
+    template_fields = ('s3_bucket', 'gcs_bucket')
+    ui_color = '#e09411'
+
+    @apply_defaults
+    def __init__(self,
+                 s3_bucket,
+                 gcs_bucket,
+                 project_id,
+                 aws_conn_id='aws_default',
+                 gcp_conn_id='google_cloud_default',
+                 delegate_to=None,
+                 object_conditions=None,
+                 transfer_options=None,
+                 job_kwargs=None,
+                 *args,
+                 **kwargs):
+
+        super(S3ToGoogleCloudStorageTransferOperator, self).__init__(
+            *args,
+            **kwargs)
+        self.s3_bucket = s3_bucket
+        self.gcs_bucket = gcs_bucket
+        self.project_id = project_id
+        self.aws_conn_id = aws_conn_id
+        self.gcp_conn_id = gcp_conn_id
+        self.delegate_to = delegate_to
+        self.object_conditions = object_conditions or {}
+        self.transfer_options = transfer_options or {}
+        self.job_kwargs = job_kwargs or {}
+
+    def execute(self, context):
+        transfer_hook = GCPTransferServiceHook(
+            gcp_conn_id=self.gcp_conn_id,
+            delegate_to=self.delegate_to)
+
+        s3_creds = S3Hook(aws_conn_id=self.aws_conn_id).get_credentials()
+
+        transfer_hook.create_transfer_job(
+            project_id=self.project_id,
+            transfer_spec={
+                'awsS3DataSource': {
+                    'bucketName': self.s3_bucket,
+                    'awsAccessKey': {
+                        'accessKeyId': s3_creds.access_key,
+                        'secretAccessKey': s3_creds.secret_key,
+                    }
+                },
+                'gcsDataSink': {
+                    'bucketName': self.gcs_bucket,
+                },
+                'objectConditions': self.object_conditions,
+                'transferOptions': self.transfer_options,
+            },
+            **self.job_kwargs
+        )
diff --git a/docs/code.rst b/docs/code.rst
index e6849c9d3d..bbdbbc8693 100644
--- a/docs/code.rst
+++ b/docs/code.rst
@@ -207,6 +207,7 @@ Operators
 .. autoclass:: airflow.contrib.operators.s3_delete_objects_operator.S3DeleteObjectsOperator
 .. autoclass:: airflow.contrib.operators.s3_list_operator.S3ListOperator
 .. autoclass:: airflow.contrib.operators.s3_to_gcs_operator.S3ToGoogleCloudStorageOperator
+.. autoclass:: airflow.contrib.operators.s3_to_gcs_transfer_operator.S3ToGoogleCloudStorageTransferOperator
 .. autoclass:: airflow.contrib.operators.sagemaker_base_operator.SageMakerBaseOperator
 .. autoclass:: airflow.contrib.operators.sagemaker_endpoint_operator.SageMakerEndpointOperator
 .. autoclass:: airflow.contrib.operators.sagemaker_endpoint_config_operator.SageMakerEndpointConfigOperator
@@ -434,6 +435,7 @@ Community contributed hooks
 .. autoclass:: airflow.contrib.hooks.gcp_mlengine_hook.MLEngineHook
 .. autoclass:: airflow.contrib.hooks.gcp_pubsub_hook.PubSubHook
 .. autoclass:: airflow.contrib.hooks.gcs_hook.GoogleCloudStorageHook
+.. autoclass:: airflow.contrib.hooks.gcp_transfer_hook.GCPTransferServiceHook
 .. autoclass:: airflow.contrib.hooks.imap_hook.ImapHook
 .. autoclass:: airflow.contrib.hooks.jenkins_hook.JenkinsHook
 .. autoclass:: airflow.contrib.hooks.jira_hook.JiraHook
diff --git a/docs/integration.rst b/docs/integration.rst
index 091f462ea5..471ce74ed4 100644
--- a/docs/integration.rst
+++ b/docs/integration.rst
@@ -238,6 +238,7 @@ AWS S3
 - :ref:`S3FileTransformOperator` : Copies data from a source S3 location to a temporary location
on the local filesystem.
 - :ref:`S3ListOperator` : Lists the files matching a key prefix from a S3 location.
 - :ref:`S3ToGoogleCloudStorageOperator` : Syncs an S3 location with a Google Cloud Storage
bucket.
+- :ref:`S3ToGoogleCloudStorageTransferOperator` : Syncs an S3 bucket with a Google Cloud
Storage bucket using the GCP Storage Transfer Service.
 - :ref:`S3ToHiveTransfer` : Moves data from S3 to Hive. The operator downloads a file from
S3, stores the file locally before loading it into a Hive table.
 
 .. _S3Hook:
@@ -268,6 +269,13 @@ S3ToGoogleCloudStorageOperator
 
 .. autoclass:: airflow.contrib.operators.s3_to_gcs_operator.S3ToGoogleCloudStorageOperator
 
+.. _S3ToGoogleCloudStorageTransferOperator:
+
+S3ToGoogleCloudStorageTransferOperator
+""""""""""""""""""""""""""""""""""""""
+
+.. autoclass:: airflow.contrib.operators.s3_to_gcs_operator.S3ToGoogleCloudStorageTransferOperator
+
 .. _S3ToHiveTransfer:
 
 S3ToHiveTransfer
@@ -1043,6 +1051,12 @@ GoogleCloudStorageHook
 .. autoclass:: airflow.contrib.hooks.gcs_hook.GoogleCloudStorageHook
     :members:
 
+GCPTransferServiceHook
+""""""""""""""""""""""
+
+.. autoclass:: airflow.contrib.hooks.gcp_transfer_hook.GCPTransferServiceHook
+    :members:
+
 Google Kubernetes Engine
 ''''''''''''''''''''''''
 
diff --git a/tests/contrib/hooks/test_gcp_transfer_hook.py b/tests/contrib/hooks/test_gcp_transfer_hook.py
new file mode 100644
index 0000000000..a61716653a
--- /dev/null
+++ b/tests/contrib/hooks/test_gcp_transfer_hook.py
@@ -0,0 +1,111 @@
+# -*- 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 json
+import datetime
+import unittest
+
+from airflow.exceptions import AirflowException
+from airflow.contrib.hooks.gcp_transfer_hook import GCPTransferServiceHook
+from airflow.contrib.hooks.gcp_transfer_hook import TIME_TO_SLEEP_IN_SECONDS
+
+try:
+    from unittest import mock
+except ImportError:
+    try:
+        import mock
+    except ImportError:
+        mock = None
+
+
+class TestGCPTransferServiceHook(unittest.TestCase):
+    def setUp(self):
+        with mock.patch.object(GCPTransferServiceHook, '__init__', return_value=None):
+            self.conn = mock.Mock()
+            self.transfer_hook = GCPTransferServiceHook()
+            self.transfer_hook._conn = self.conn
+
+    @mock.patch('airflow.contrib.hooks.gcp_transfer_hook.GCPTransferServiceHook.wait_for_transfer_job')
+    def test_create_transfer_job(self, mock_wait):
+        mock_create = self.conn.transferJobs.return_value.create
+        mock_execute = mock_create.return_value.execute
+        mock_execute.return_value = {
+            'projectId': 'test-project',
+            'name': 'transferJobs/test-job',
+        }
+        now = datetime.datetime.utcnow()
+        transfer_spec = {
+            'awsS3DataSource': {'bucketName': 'test-s3-bucket'},
+            'gcsDataSink': {'bucketName': 'test-gcs-bucket'}
+        }
+        self.transfer_hook.create_transfer_job('test-project', transfer_spec)
+        mock_create.assert_called_once_with(body={
+            'status': 'ENABLED',
+            'projectId': 'test-project',
+            'transferSpec': transfer_spec,
+            'schedule': {
+                'scheduleStartDate': {
+                    'day': now.day,
+                    'month': now.month,
+                    'year': now.year,
+                },
+                'scheduleEndDate': {
+                    'day': now.day,
+                    'month': now.month,
+                    'year': now.year,
+                }
+            }
+        })
+        mock_wait.assert_called_once_with(mock_execute.return_value, conn=self.conn)
+
+    @mock.patch('time.sleep')
+    def test_wait_for_transfer_job(self, mock_sleep):
+        mock_list = self.conn.transferOperations.return_value.list
+        mock_execute = mock_list.return_value.execute
+        mock_execute.side_effect = [
+            {'operations': [{'metadata': {'status': 'IN_PROGRESS'}}]},
+            {'operations': [{'metadata': {'status': 'SUCCESS'}}]},
+        ]
+        self.transfer_hook.wait_for_transfer_job({
+            'projectId': 'test-project',
+            'name': 'transferJobs/test-job',
+        })
+        self.assertTrue(mock_list.called)
+        list_args, list_kwargs = mock_list.call_args_list[0]
+        self.assertEqual(list_kwargs.get('name'), 'transferOperations')
+        self.assertEqual(
+            json.loads(list_kwargs.get('filter')),
+            {
+                'project_id': 'test-project',
+                'job_names': ['transferJobs/test-job']
+            },
+        )
+        mock_sleep.assert_called_once_with(TIME_TO_SLEEP_IN_SECONDS)
+
+    def test_wait_for_transfer_job_failed(self):
+        mock_list = self.conn.transferOperations.return_value.list
+        mock_execute = mock_list.return_value.execute
+        mock_execute.side_effect = [
+            {'operations': [{'name': 'test-job', 'metadata': {'status': 'FAILED'}}]},
+        ]
+        with self.assertRaises(AirflowException):
+            self.transfer_hook.wait_for_transfer_job({
+                'projectId': 'test-project',
+                'name': 'transferJobs/test-job',
+            })
diff --git a/tests/contrib/operators/test_s3_to_gcs_transfer_operator.py b/tests/contrib/operators/test_s3_to_gcs_transfer_operator.py
new file mode 100644
index 0000000000..cc7bfd7a95
--- /dev/null
+++ b/tests/contrib/operators/test_s3_to_gcs_transfer_operator.py
@@ -0,0 +1,98 @@
+# -*- 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 unittest
+import collections
+
+from airflow.contrib.operators.s3_to_gcs_transfer_operator import \
+    S3ToGoogleCloudStorageTransferOperator
+
+try:
+    from unittest import mock
+except ImportError:
+    try:
+        import mock
+    except ImportError:
+        mock = None
+
+
+TASK_ID = 'test-s3-gcs-transfer-operator'
+S3_BUCKET = 'test-s3-bucket'
+GCS_BUCKET = 'test-gcs-bucket'
+PROJECT_ID = 'test-project'
+ACCESS_KEY = 'test-access-key'
+SECRET_KEY = 'test-secret-key'
+
+
+Credentials = collections.namedtuple(
+    'Credentials', ['access_key', 'secret_key'])
+
+
+class S3ToGoogleCloudStorageTransferOperatorTest(unittest.TestCase):
+    def test_constructor(self):
+        """Test S3ToGoogleCloudStorageTransferOperator instance is properly initialized."""
+
+        operator = S3ToGoogleCloudStorageTransferOperator(
+            task_id=TASK_ID,
+            s3_bucket=S3_BUCKET,
+            gcs_bucket=GCS_BUCKET,
+            project_id=PROJECT_ID,
+        )
+
+        self.assertEqual(operator.task_id, TASK_ID)
+        self.assertEqual(operator.s3_bucket, S3_BUCKET)
+        self.assertEqual(operator.gcs_bucket, GCS_BUCKET)
+        self.assertEqual(operator.project_id, PROJECT_ID)
+
+    @mock.patch('airflow.contrib.operators.s3_to_gcs_transfer_operator.GCPTransferServiceHook')
+    @mock.patch('airflow.contrib.operators.s3_to_gcs_transfer_operator.S3Hook')
+    def test_execute(self, mock_s3_hook, mock_transfer_hook):
+        """Test the execute function when the run is successful."""
+
+        operator = S3ToGoogleCloudStorageTransferOperator(
+            task_id=TASK_ID,
+            s3_bucket=S3_BUCKET,
+            gcs_bucket=GCS_BUCKET,
+            project_id=PROJECT_ID,
+        )
+
+        mock_s3_hook.return_value.get_credentials.return_value = Credentials(
+            access_key=ACCESS_KEY,
+            secret_key=SECRET_KEY,
+        )
+
+        operator.execute(None)
+
+        mock_transfer_hook.return_value.create_transfer_job.assert_called_once_with(
+            project_id=PROJECT_ID,
+            transfer_spec={
+                'awsS3DataSource': {
+                    'bucketName': S3_BUCKET,
+                    'awsAccessKey': {
+                        'accessKeyId': ACCESS_KEY,
+                        'secretAccessKey': SECRET_KEY,
+                    }
+                },
+                'gcsDataSink': {
+                    'bucketName': GCS_BUCKET,
+                },
+                'objectConditions': {},
+                'transferOptions': {}
+            }
+        )


 

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