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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]