Source code for airflow.contrib.operators.druid_operator

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import json

from airflow.hooks.druid_hook import DruidHook
from airflow.models import BaseOperator


[docs]class DruidOperator(BaseOperator): """ Allows to submit a task directly to druid :param json_index_file: The filepath to the druid index specification :type json_index_file: str :param druid_ingest_conn_id: The connection id of the Druid overlord which accepts index jobs :type druid_ingest_conn_id: str """ template_fields = ('index_spec_str',) template_ext = ('.json',) def __init__(self, json_index_file, druid_ingest_conn_id='druid_ingest_default', max_ingestion_time=None, *args, **kwargs): super(DruidOperator, self).__init__(*args, **kwargs) self.conn_id = druid_ingest_conn_id self.max_ingestion_time = max_ingestion_time with open(json_index_file) as data_file: index_spec = json.load(data_file) self.index_spec_str = json.dumps( index_spec, sort_keys=True, indent=4, separators=(',', ': ') ) def execute(self, context): hook = DruidHook( druid_ingest_conn_id=self.conn_id, max_ingestion_time=self.max_ingestion_time ) self.log.info("Sumitting %s", self.index_spec_str) hook.submit_indexing_job(self.index_spec_str)