airflow druid 源码
airflow druid 代码
文件路径：/airflow/providers/apache/druid/operators/druid.py
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
from typing import TYPE_CHECKING, Any, Sequence
from airflow.models import BaseOperator
from airflow.providers.apache.druid.hooks.druid import DruidHook
if TYPE_CHECKING:
from airflow.utils.context import Context
class DruidOperator(BaseOperator):
"""
Allows to submit a task directly to druid
:param json_index_file: The filepath to the druid index specification
:param druid_ingest_conn_id: The connection id of the Druid overlord which
accepts index jobs
:param timeout: The interval (in seconds) between polling the Druid job for the status
of the ingestion job. Must be greater than or equal to 1
:param max_ingestion_time: The maximum ingestion time before assuming the job failed
"""
template_fields: Sequence[str] = ('json_index_file',)
template_ext: Sequence[str] = ('.json',)
template_fields_renderers = {'json_index_file': 'json'}
def __init__(
self,
*,
json_index_file: str,
druid_ingest_conn_id: str = 'druid_ingest_default',
timeout: int = 1,
max_ingestion_time: int | None = None,
**kwargs: Any,
) -> None:
super().__init__(**kwargs)
self.json_index_file = json_index_file
self.conn_id = druid_ingest_conn_id
self.timeout = timeout
self.max_ingestion_time = max_ingestion_time
def execute(self, context: Context) -> None:
hook = DruidHook(
druid_ingest_conn_id=self.conn_id,
timeout=self.timeout,
max_ingestion_time=self.max_ingestion_time,
)
self.log.info("Submitting %s", self.json_index_file)
hook.submit_indexing_job(self.json_index_file)
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