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quickstart.py
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# Copyright 2019 Google LLC
#
# Licensed 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
#
# https://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.
# [START composer_quickstart]
import datetime
from airflow import models
from airflow.operators import bash
# If you are running Airflow in more than one time zone
# see https://airflow.apache.org/docs/apache-airflow/stable/timezone.html
# for best practices
YESTERDAY = datetime.datetime.now() - datetime.timedelta(days=1)
default_args = {
"owner": "Composer Example",
"depends_on_past": False,
"email": [""],
"email_on_failure": False,
"email_on_retry": False,
"retries": 1,
"retry_delay": datetime.timedelta(minutes=5),
"start_date": YESTERDAY,
}
with models.DAG(
"composer_quickstart",
catchup=False,
default_args=default_args,
schedule_interval=datetime.timedelta(days=1),
) as dag:
# Print the dag_run id from the Airflow logs
print_dag_run_conf = bash.BashOperator(
task_id="print_dag_run_conf", bash_command="echo {{ dag_run.id }}"
)
# [END composer_quickstart]