Source code for airflow.contrib.sensors.emr_job_flow_sensor

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from airflow.contrib.hooks.emr_hook import EmrHook
from airflow.contrib.sensors.emr_base_sensor import EmrBaseSensor
from airflow.utils import apply_defaults

[docs]class EmrJobFlowSensor(EmrBaseSensor): """ Asks for the state of the JobFlow until it reaches a terminal state. If it fails the sensor errors, failing the task. :param job_flow_id: job_flow_id to check the state of :type job_flow_id: string """ NON_TERMINAL_STATES = ['STARTING', 'BOOTSTRAPPING', 'RUNNING', 'WAITING', 'TERMINATING'] FAILED_STATE = ['TERMINATED_WITH_ERRORS'] template_fields = ['job_flow_id'] template_ext = () @apply_defaults def __init__(self, job_flow_id, *args, **kwargs): super(EmrJobFlowSensor, self).__init__(*args, **kwargs) self.job_flow_id = job_flow_id def get_emr_response(self): emr = EmrHook(aws_conn_id=self.aws_conn_id).get_conn()'Poking cluster %s', self.job_flow_id) return emr.describe_cluster(ClusterId=self.job_flow_id) def state_from_response(self, response): return response['Cluster']['Status']['State']