airflow example_compute_ssh 源码

airflow example_compute_ssh 代码

文件路径：/airflow/providers/google/cloud/example_dags/example_compute_ssh.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 models
from airflow.providers.google.cloud.hooks.compute_ssh import ComputeEngineSSHHook
from airflow.providers.ssh.operators.ssh import SSHOperator

# [START howto_operator_gce_args_common]
GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
GCE_ZONE = os.environ.get('GCE_ZONE', 'europe-west2-a')
GCE_INSTANCE = os.environ.get('GCE_INSTANCE', 'target-instance')
# [END howto_operator_gce_args_common]

with models.DAG(
    'example_compute_ssh',
    start_date=datetime(2021, 1, 1),
    catchup=False,
    tags=['example'],
) as dag:
    # # [START howto_execute_command_on_remote1]
    os_login_without_iap_tunnel = SSHOperator(
        task_id="os_login_without_iap_tunnel",
        ssh_hook=ComputeEngineSSHHook(
            instance_name=GCE_INSTANCE,
            zone=GCE_ZONE,
            project_id=GCP_PROJECT_ID,
            use_oslogin=True,
            use_iap_tunnel=False,
        ),
        command="echo os_login_without_iap_tunnel",
    )
    # # [END howto_execute_command_on_remote1]

    # # [START howto_execute_command_on_remote2]
    metadata_without_iap_tunnel = SSHOperator(
        task_id="metadata_without_iap_tunnel",
        ssh_hook=ComputeEngineSSHHook(
            instance_name=GCE_INSTANCE,
            zone=GCE_ZONE,
            use_oslogin=False,
            use_iap_tunnel=False,
        ),
        command="echo metadata_without_iap_tunnel",
    )
    # # [END howto_execute_command_on_remote2]

    os_login_with_iap_tunnel = SSHOperator(
        task_id="os_login_with_iap_tunnel",
        ssh_hook=ComputeEngineSSHHook(
            instance_name=GCE_INSTANCE,
            zone=GCE_ZONE,
            use_oslogin=True,
            use_iap_tunnel=True,
        ),
        command="echo os_login_with_iap_tunnel",
    )

    metadata_with_iap_tunnel = SSHOperator(
        task_id="metadata_with_iap_tunnel",
        ssh_hook=ComputeEngineSSHHook(
            instance_name=GCE_INSTANCE,
            zone=GCE_ZONE,
            use_oslogin=False,
            use_iap_tunnel=True,
        ),
        command="echo metadata_with_iap_tunnel",
    )

    os_login_with_iap_tunnel >> os_login_without_iap_tunnel
    metadata_with_iap_tunnel >> metadata_without_iap_tunnel

    os_login_without_iap_tunnel >> metadata_with_iap_tunnel

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