dmtran created AIRFLOW-96:
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Summary: s3_conn_id of s3KeySensor cannot be defined using an
environment variable
Key: AIRFLOW-96
URL: https://issues.apache.org/jira/browse/AIRFLOW-96
Project: Apache Airflow
Issue Type: Bug
Components: operators
Affects Versions: Airflow 1.6.2
Environment: Python Version: 2.7.11
Operating System: OS X El Capitan 10.11.4
Reporter: dmtran
Priority: Minor
According to https://pythonhosted.org/airflow/concepts.html#connections,
Airflow has the ability to reference connections via environment variables from
the operating system. The environment variable needs to be prefixed with
AIRFLOW_CONN_ to be considered a connection.
This doesn't work with an S3KeySensor, the following exception is raised:
{noformat}
[2016-05-10 17:01:37,101] {models.py:1041} ERROR - conn_id doesn't exist in the
repository
Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/airflow/models.py", line 1000,
in run
result = task_copy.execute(context=context)
File
"/usr/local/lib/python2.7/site-packages/airflow/operators/python_operator.py",
line 65, in execute
return_value = self.python_callable(*self.op_args, **self.op_kwargs)
File "/Users/dmtran/git_repos/coordinator/airflow/dags/test-s3.py", line 24,
in check_key_in_s3
s3_conn_id='S3_CONNECTION')
File "/usr/local/lib/python2.7/site-packages/airflow/utils.py", line 461, in
wrapper
result = func(*args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/airflow/operators/sensors.py",
line 332, in __init__
raise AirflowException("conn_id doesn't exist in the repository")
AirflowException: conn_id doesn't exist in the repository
{noformat}
You can reproduce this issue by triggering a DAGrun of the following DAG:
{code}
from airflow.hooks.base_hook import CONN_ENV_PREFIX
from airflow.operators import *
from airflow.models import DAG
from datetime import datetime
import os
args = {
'owner': 'airflow',
'start_date': datetime(2016, 5, 10, 7)
}
dag = DAG(dag_id='test-s3',
default_args=args,
schedule_interval=None)
def check_key_in_s3(**context):
os.environ[CONN_ENV_PREFIX + 'S3_CONNECTION'] = '{ "aws_access_key_id":
"dummyAccessKey", "aws_secret_access_key": "dummySecretKey" }'
sensor = S3KeySensor(
task_id='s3keysensor',
bucket_name='dummy_bucket',
bucket_key='dummy_key',
dag=dag,
s3_conn_id='S3_CONNECTION')
sensor.execute(context)
check_s3_key_operator = PythonOperator(
task_id='check_key_in_s3',
python_callable=check_key_in_s3,
provide_context=True,
dag=dag)
{code}
The exception is raised because of the following lines in method __init__ of
class S3KeySensor:
{code}
db = session.query(DB).filter(DB.conn_id == s3_conn_id).first()
if not db:
raise AirflowException("conn_id doesn't exist in the repository")
{code}
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