Hello.
I'd like to reuse some info given by a task to feed subsequent S3KeySensor
checks, but after trying several ideas I'm not able to make this work.
Basically my current DAG is as follow :
copy_data = BashOperator(
task_id='copy_data',
# this script copies data to S3
bash_command='do_stuff.sh',
dag=dag)
s3_path = xxxx
for data_type in ("fileA", "fileB", "fileC"):
S3Sensor_task = S3KeySensor(
task_id='check_' + data_type,
poke_interval=20,
timeout=60,
retry_delay=timedelta(seconds=30),
bucket_key=s3_path + data_type,
bucket_name='xxxx',
s3_conn_id='s3_conn_id',
dag=dag)
S3Sensor_task.set_upstream(copy_data)
This works great, but I'd rather avoid duplicating the S3 path in the DAG
and in the do_stuff.sh script.
So I tought pushing S3 path from the do_stuff.sh to xcom variables, but
then I need access to thoses items in my for loop.
I've tried SubDag but once again I did not manage to read xcom.
Could someone give me some hints ?
Regards
