Source code for airflow.contrib.operators.emr_create_job_flow_operator

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from airflow.contrib.hooks.emr_hook import EmrHook
from airflow.models import BaseOperator
from airflow.utils import apply_defaults
from airflow.exceptions import AirflowException


[docs]class EmrCreateJobFlowOperator(BaseOperator): """ Creates an EMR JobFlow, reading the config from the EMR connection. A dictionary of JobFlow overrides can be passed that override the config from the connection. :param aws_conn_id: aws connection to uses :type aws_conn_id: str :param emr_conn_id: emr connection to use :type emr_conn_id: str :param job_flow_overrides: boto3 style arguments to override emr_connection extra. (templated) :type steps: dict """ template_fields = ['job_flow_overrides'] template_ext = () ui_color = '#f9c915' @apply_defaults def __init__( self, aws_conn_id='s3_default', emr_conn_id='emr_default', job_flow_overrides=None, *args, **kwargs): super(EmrCreateJobFlowOperator, self).__init__(*args, **kwargs) self.aws_conn_id = aws_conn_id self.emr_conn_id = emr_conn_id if job_flow_overrides is None: job_flow_overrides = {} self.job_flow_overrides = job_flow_overrides def execute(self, context): emr = EmrHook(aws_conn_id=self.aws_conn_id, emr_conn_id=self.emr_conn_id) self.log.info( 'Creating JobFlow using aws-conn-id: %s, emr-conn-id: %s', self.aws_conn_id, self.emr_conn_id ) response = emr.create_job_flow(self.job_flow_overrides) if not response['ResponseMetadata']['HTTPStatusCode'] == 200: raise AirflowException('JobFlow creation failed: %s' % response) else: self.log.info('JobFlow with id %s created', response['JobFlowId']) return response['JobFlowId']