airflow example_glacier_to_gcs 源码
airflow example_glacier_to_gcs 代码
文件路径：/airflow/providers/amazon/aws/example_dags/example_glacier_to_gcs.py
# 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 __future__ import annotations
import os
from datetime import datetime
from airflow import DAG
from airflow.providers.amazon.aws.operators.glacier import GlacierCreateJobOperator
from airflow.providers.amazon.aws.sensors.glacier import GlacierJobOperationSensor
from airflow.providers.amazon.aws.transfers.glacier_to_gcs import GlacierToGCSOperator
VAULT_NAME = "airflow"
BUCKET_NAME = os.environ.get("GLACIER_GCS_BUCKET_NAME", "gs://INVALID BUCKET NAME")
OBJECT_NAME = os.environ.get("GLACIER_OBJECT", "example-text.txt")
with DAG(
"example_glacier_to_gcs",
start_date=datetime(2021, 1, 1), # Override to match your needs
catchup=False,
) as dag:
# [START howto_operator_glacier_create_job]
create_glacier_job = GlacierCreateJobOperator(task_id="create_glacier_job", vault_name=VAULT_NAME)
JOB_ID = '{{ task_instance.xcom_pull("create_glacier_job")["jobId"] }}'
# [END howto_operator_glacier_create_job]
# [START howto_sensor_glacier_job_operation]
wait_for_operation_complete = GlacierJobOperationSensor(
vault_name=VAULT_NAME,
job_id=JOB_ID,
task_id="wait_for_operation_complete",
)
# [END howto_sensor_glacier_job_operation]
# [START howto_transfer_glacier_to_gcs]
transfer_archive_to_gcs = GlacierToGCSOperator(
task_id="transfer_archive_to_gcs",
vault_name=VAULT_NAME,
bucket_name=BUCKET_NAME,
object_name=OBJECT_NAME,
gzip=False,
# Override to match your needs
# If chunk size is bigger than actual file size
# then whole file will be downloaded
chunk_size=1024,
)
# [END howto_transfer_glacier_to_gcs]
create_glacier_job >> wait_for_operation_complete >> transfer_archive_to_gcs
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