superset scheduler 源码
superset scheduler 代码
文件路径:/superset/tasks/scheduler.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.
import logging
from celery.exceptions import SoftTimeLimitExceeded
from dateutil import parser
from superset import app, is_feature_enabled
from superset.commands.exceptions import CommandException
from superset.extensions import celery_app
from superset.reports.commands.exceptions import ReportScheduleUnexpectedError
from superset.reports.commands.execute import AsyncExecuteReportScheduleCommand
from superset.reports.commands.log_prune import AsyncPruneReportScheduleLogCommand
from superset.reports.dao import ReportScheduleDAO
from superset.tasks.cron_util import cron_schedule_window
from superset.utils.celery import session_scope
logger = logging.getLogger(__name__)
@celery_app.task(name="reports.scheduler")
def scheduler() -> None:
"""
Celery beat main scheduler for reports
"""
if not is_feature_enabled("ALERT_REPORTS"):
return
with session_scope(nullpool=True) as session:
active_schedules = ReportScheduleDAO.find_active(session)
for active_schedule in active_schedules:
for schedule in cron_schedule_window(
active_schedule.crontab, active_schedule.timezone
):
logger.info(
"Scheduling alert %s eta: %s", active_schedule.name, schedule
)
async_options = {"eta": schedule}
if (
active_schedule.working_timeout is not None
and app.config["ALERT_REPORTS_WORKING_TIME_OUT_KILL"]
):
async_options["time_limit"] = (
active_schedule.working_timeout
+ app.config["ALERT_REPORTS_WORKING_TIME_OUT_LAG"]
)
async_options["soft_time_limit"] = (
active_schedule.working_timeout
+ app.config["ALERT_REPORTS_WORKING_SOFT_TIME_OUT_LAG"]
)
execute.apply_async(
(
active_schedule.id,
schedule,
),
**async_options
)
@celery_app.task(name="reports.execute")
def execute(report_schedule_id: int, scheduled_dttm: str) -> None:
task_id = None
try:
task_id = execute.request.id
scheduled_dttm_ = parser.parse(scheduled_dttm)
logger.info(
"Executing alert/report, task id: %s, scheduled_dttm: %s",
task_id,
scheduled_dttm,
)
AsyncExecuteReportScheduleCommand(
task_id,
report_schedule_id,
scheduled_dttm_,
).run()
except ReportScheduleUnexpectedError:
logger.exception(
"An unexpected occurred while executing the report: %s", task_id
)
except CommandException:
logger.exception(
"A downstream exception occurred while generating" " a report: %s", task_id
)
@celery_app.task(name="reports.prune_log")
def prune_log() -> None:
try:
AsyncPruneReportScheduleLogCommand().run()
except SoftTimeLimitExceeded as ex:
logger.warning("A timeout occurred while pruning report schedule logs: %s", ex)
except CommandException as ex:
logger.exception("An exception occurred while pruning report schedule logs")
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