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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
import airflow
from airflow.operators import bash_operator
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 airflow.DAG(
'composer_sample_dag',
'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_operator.BashOperator(
task_id='print_dag_run_conf', bash_command='echo {{ dag_run.id }}')
# [END composer_quickstart]