Source code for airflow.contrib.operators.aws_athena_operator

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from uuid import uuid4

from airflow.models import BaseOperator
from airflow.utils.decorators import apply_defaults
from airflow.contrib.hooks.aws_athena_hook import AWSAthenaHook

[docs]class AWSAthenaOperator(BaseOperator): """ An operator that submit presto query to athena. :param query: Presto to be run on athena. (templated) :type query: str :param database: Database to select. (templated) :type database: str :param output_location: s3 path to write the query results into. (templated) :type output_location: str :param aws_conn_id: aws connection to use :type aws_conn_id: str :param sleep_time: Time to wait between two consecutive call to check query status on athena :type sleep_time: int """ ui_color = '#44b5e2' template_fields = ('query', 'database', 'output_location') @apply_defaults def __init__(self, query, database, output_location, aws_conn_id='aws_default', client_request_token=None, query_execution_context=None, result_configuration=None, sleep_time=30, *args, **kwargs): super(AWSAthenaOperator, self).__init__(*args, **kwargs) self.query = query self.database = database self.output_location = output_location self.aws_conn_id = aws_conn_id self.client_request_token = client_request_token or str(uuid4()) self.query_execution_context = query_execution_context or {} self.result_configuration = result_configuration or {} self.sleep_time = sleep_time self.query_execution_id = None self.hook = None def get_hook(self): return AWSAthenaHook(self.aws_conn_id, self.sleep_time)
[docs] def execute(self, context): """ Run Presto Query on Athena """ self.hook = self.get_hook() self.hook.get_conn() self.query_execution_context['Database'] = self.database self.result_configuration['OutputLocation'] = self.output_location self.query_execution_id = self.hook.run_query(self.query, self.query_execution_context, self.result_configuration, self.client_request_token) self.hook.poll_query_status(self.query_execution_id)
[docs] def on_kill(self): """ Cancel the submitted athena query """ if self.query_execution_id:'⚰️⚰️⚰️ Received a kill Signal. Time to Die')'Stopping Query with executionId - {queryId}'.format( queryId=self.query_execution_id)) response = self.hook.stop_query(self.query_execution_id) http_status_code = None try: http_status_code = response['ResponseMetadata']['HTTPStatusCode'] except Exception as ex: self.log.error('Exception while cancelling query', ex) finally: if http_status_code is None or http_status_code != 200: self.log.error('Unable to request query cancel on athena. Exiting') else:'Polling Athena for query with id {queryId} to reach final state'.format( queryId=self.query_execution_id)) self.hook.poll_query_status(self.query_execution_id)