Forked from saumalya75/airflow_arena:arflow_on_container:layout_generator.py
Created
February 12, 2021 09:51
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Generate dynamic dag
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with DAG(**dag_config) as dag: | |
# Declare pipeline start and end task | |
start_task = DummyOperator(task_id='pipeline_start') | |
end_task = DummyOperator(task_id='pipeline_end') | |
for account_details in pipeline_config['task_details']['accounts']: | |
#Declare Account Start and End Task | |
if account_details['runable']: | |
acct_start_task = DummyOperator(task_id=account_details['account_id'] + '_start') | |
acct_start_task.set_upstream(start_task) | |
acct_end_task = DummyOperator(task_id=account_details['account_id'] + '_end') | |
for file_details in account_details['files']: | |
if file_details['runable']: | |
minio_sensor = CustomS3Sensor( | |
task_id=file_details['file_id'] + "_minio_sensor" | |
, poke_interval=10 | |
, retry_delay=timedelta(seconds=25) | |
, xcom_task_id_key=file_details['file_id'] + "_minio_sensor_xcom_key" | |
, refresh_xcom=True | |
, conn_type="minio" | |
, endpoint_url="http://minio:9000" | |
, bucket_name="airflow" | |
, identifier=file_details['trigger_prefix'] + "/" + file_details['trigger_identifier'] + datetime.now().strftime("%Y%m%d") + ".txt" | |
, wildcard_match=False | |
, dag=dag | |
) | |
s3_sensor = CustomS3Sensor( | |
task_id=file_details['file_id'] + "_s3_sensor" | |
, poke_interval=10 | |
, retry_delay=timedelta(seconds=25) | |
, xcom_task_id_key=file_details['file_id'] + "_s3_sensor_xcom_key" | |
, refresh_xcom=False | |
, conn_type="aws" | |
, wildcard_match=False | |
, from_xcom=True | |
, xcom_source_task_id=file_details['file_id'] + "_minio_sensor" | |
, xcom_key=file_details['file_id'] + "_minio_sensor_xcom_key" | |
, dag=dag | |
) | |
data_processor = CustomFileProcessingOperator( | |
task_id=file_details['file_id'] + "_data_processor" | |
, xcom_task_id_key=file_details['file_id'] + "_data_processor_xcom_key" | |
, xcom_source_task_id=file_details['file_id'] + "_minio_sensor" | |
, xcom_key=file_details['file_id'] + "_minio_sensor_xcom_key" | |
, source_bed_type="aws" | |
, source_conn_id="aws_default" | |
, dag=dag | |
) | |
minio_sensor.set_upstream(acct_start_task) | |
s3_sensor.set_upstream(minio_sensor) | |
data_processor.set_upstream(s3_sensor) | |
acct_end_task.set_upstream(data_processor) | |
end_task.set_upstream(acct_end_task) |
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