airflow jobs_command 源码
airflow jobs_command 代码
文件路径：/airflow/cli/commands/jobs_command.py
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# 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
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# KIND, either express or implied. See the License for the
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from __future__ import annotations
from airflow.jobs.base_job import BaseJob
from airflow.utils.net import get_hostname
from airflow.utils.session import provide_session
from airflow.utils.state import State
@provide_session
def check(args, session=None):
"""Checks if job(s) are still alive"""
if args.allow_multiple and not args.limit > 1:
raise SystemExit("To use option --allow-multiple, you must set the limit to a value greater than 1.")
if args.hostname and args.local:
raise SystemExit("You can't use --hostname and --local at the same time")
query = (
session.query(BaseJob)
.filter(BaseJob.state == State.RUNNING)
.order_by(BaseJob.latest_heartbeat.desc())
)
if args.job_type:
query = query.filter(BaseJob.job_type == args.job_type)
if args.hostname:
query = query.filter(BaseJob.hostname == args.hostname)
if args.local:
query = query.filter(BaseJob.hostname == get_hostname())
if args.limit > 0:
query = query.limit(args.limit)
jobs: list[BaseJob] = query.all()
alive_jobs = [job for job in jobs if job.is_alive()]
count_alive_jobs = len(alive_jobs)
if count_alive_jobs == 0:
raise SystemExit("No alive jobs found.")
if count_alive_jobs > 1 and not args.allow_multiple:
raise SystemExit(f"Found {count_alive_jobs} alive jobs. Expected only one.")
if count_alive_jobs == 1:
print("Found one alive job.")
else:
print(f"Found {count_alive_jobs} alive jobs.")
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