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zwf
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"""
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系统服务，用于读取服务配置文件，启动或停止相关的服务。
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"""
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import asyncio
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import datetime
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import logging
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from asyncio import AbstractEventLoop, Task
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from enum import Enum
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from typing import Callable, Awaitable, Optional
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from dateutil.relativedelta import relativedelta
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from paste.core import aio_pool
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from paste.core.logging import echo_log
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from paste.db.baseadapter import BaseAdapter
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from paste.service.daemonize import DaemonizeService
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class PeriodType(Enum):
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WEEKLY = "weekly"
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MONTHLY = "monthly"
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YEARLY = "yearly"
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QUARTERLY = "quarterly"
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class TaskService:
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"""
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任务服务，专用于创建或停止服务。
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"""
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task_event_loop: Optional[AbstractEventLoop] = None
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"""
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任务件循环对象。
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"""
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def __init__(self, service_name: str = None, pid_file: str = None):
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"""
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构造函数。
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:param service_name: 服务名称
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:param pid_file: 进程 ID 文件路径
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"""
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self.service_name = service_name
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"""
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服务名称。
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"""
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if self.service_name is None:
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self.service_name = '未命名服务'
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self.pid_file = pid_file
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"""
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PID 文件路径。
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"""
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if self.pid_file is None:
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_now = datetime.datetime.now()
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self.pid_file = f'/tmp/task_service_{_now.strftime("%Y%m%d%H%M%S%f")}.pid'
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self.task_list: list[Task] = []
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"""
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任务列表。
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"""
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self._create_task_params: list[dict] = []
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"""
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创建任务的参数列表。
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"""
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self.is_running = True
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"""
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是否允许运行。
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"""
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self.log_next_time = True
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"""
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是否记录下次执行时间。
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"""
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def event_loop(self):
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"""
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在需要调用的时间点取得事件循环对象。
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:return: 事件循环对象
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"""
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self.task_event_loop = aio_pool.get_aio_loop()
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return self.task_event_loop
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def create_delay_task(self, fn: Callable = None, delay: int = 60, **kwargs):
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"""
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创建延时任务工厂，每次任务完成后，将等待固定时长后继续执行。
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:param fn: 要执行的任务函数
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:param delay: 延时长度，单位：秒
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:param kwargs fn 函数的参数
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"""
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def log_next(log_next_time: bool):
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if log_next_time and self.log_next_time:
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echo_log(f"距下次执行：{fn.__name__} 还有：{delay} 秒.")
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async def task_warp():
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"""
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任务包装器。
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"""
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if fn is not None:
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try:
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_result = fn(**kwargs)
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if isinstance(_result, Awaitable):
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await _result
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except Exception as e:
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echo_log(msg=e, level=logging.ERROR, is_log_exc=True)
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async def task_loop():
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"""
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任务循环。
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"""
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if fn is None:
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return
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_log_next_time = True
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_next_time = None
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while self.is_running:
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_delta_seconds = relativedelta(datetime.datetime.now(), _next_time).seconds if _next_time else 1
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if _delta_seconds > 0:
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await task_warp()
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# 执行服务后，更新日期值
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_next_time = datetime.datetime.now() + relativedelta(seconds=delay)
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_log_next_time = True
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else:
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log_next(_log_next_time)
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_log_next_time = False
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await asyncio.sleep(0.5)
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continue
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_loop = self.event_loop()
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_tsk: Task = _loop.create_task(task_loop())
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return _tsk
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def create_daily_task(self, fn: Callable = None, run_on_start=False,
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year: int = None, month: int = None, day: int = None,
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hour: int = None, minute: int = None, **kwargs):
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"""
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日常任务工厂，每次任务完成后，在第二天的固定时间继续执行。若设置的时间小于当前时间，则自动加一天。
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:param fn: 要执行的任务函数
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:param run_on_start: 是否在启动时立即运行一次，默认不运行
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:param year: 年
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:param month: 月
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:param day: 日
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:param hour: 时
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:param minute: 分
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:param kwargs fn 函数的参数
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"""
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_now = datetime.datetime.now()
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year = _now.year if year is None else year
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month = _now.month if month is None else month
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day = _now.day if day is None else day
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hour = _now.hour if hour is None else hour
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minute = _now.minute if minute is None else minute
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_next_time = datetime.datetime(year, month, day, hour, minute, 0)
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if relativedelta(_next_time, datetime.datetime.now()).seconds < 0:
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# 小于当前时间的，自动加一天
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_next_time = _next_time + relativedelta(days=1)
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def log_next(log_next_time: bool, next_time: datetime.datetime):
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if log_next_time and self.log_next_time:
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_delta = relativedelta(next_time, datetime.datetime.now())
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_d, _h, _m, _s = _delta.days, _delta.hours, _delta.minutes, _delta.seconds
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echo_log(f"距下次执行：{fn.__name__} 还有：{_d} 天 {_h} 时 {_m} 分 {_s} 秒.")
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async def task_warp():
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"""
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任务包装器。
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"""
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if fn is not None:
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try:
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_result = fn(**kwargs)
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if isinstance(_result, Awaitable):
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await _result
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except Exception as e:
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echo_log(msg=e, level=logging.ERROR, is_log_exc=True)
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async def task_loop(next_time: datetime.datetime):
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"""
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任务循环。
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:param next_time: 下次执行时间
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"""
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if fn is None:
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return
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_log_next_time = True
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_run_on_start = run_on_start
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while self.is_running:
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_delta_seconds = relativedelta(datetime.datetime.now(), next_time).seconds
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if _run_on_start or _delta_seconds > 0:
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await task_warp()
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_run_on_start = False
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# 执行服务后，更新日期值
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next_time = next_time + relativedelta(days=1)
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_log_next_time = True
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else:
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log_next(_log_next_time, next_time)
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_log_next_time = False
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await asyncio.sleep(0.5)
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continue
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_loop = self.event_loop()
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_tsk: Task = _loop.create_task(task_loop(next_time=_next_time))
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return _tsk
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def create_weekly_task(self, fn: Callable = None, weekday: int = 0,
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hour: int = 0, minute: int = 0, run_on_start: bool = False, **kwargs):
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"""每周某天固定时间执行（周一=0，周日=6）"""
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return self.create_periodic_task(
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fn, PeriodType.WEEKLY, run_on_start=run_on_start,
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hour=hour, minute=minute, weekday=weekday, **kwargs
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)
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def create_monthly_task(self, fn: Callable = None, day_of_month: int = 1,
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hour: int = 0, minute: int = 0, run_on_start: bool = False, **kwargs):
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"""每月固定日期执行"""
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return self.create_periodic_task(
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fn, PeriodType.MONTHLY, run_on_start=run_on_start,
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hour=hour, minute=minute, day_of_month=day_of_month, **kwargs
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)
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def create_yearly_task(self, fn: Callable = None, month: int = 1, day_of_month: int = 1,
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hour: int = 0, minute: int = 0, run_on_start: bool = False, **kwargs):
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"""每年固定日期执行"""
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return self.create_periodic_task(
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fn, PeriodType.YEARLY, run_on_start=run_on_start,
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hour=hour, minute=minute, month=month, day_of_month=day_of_month, **kwargs
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)
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def create_quarterly_task(self, fn: Callable = None, start_month: int = 1, day_of_month: int = 1,
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hour: int = 0, minute: int = 0, run_on_start: bool = False, **kwargs):
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"""每季度固定日期执行（start_month: 1,4,7,10）"""
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return self.create_periodic_task(
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fn, PeriodType.QUARTERLY, run_on_start=run_on_start,
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hour=hour, minute=minute, month=start_month, day_of_month=day_of_month, **kwargs
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)
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def create_periodic_task(self, fn: Callable = None, period_type: PeriodType = PeriodType.WEEKLY,
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run_on_start: bool = False, hour: int = 0, minute: int = 0,
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weekday: Optional[int] = None, # 0=周一, 6=周日，仅 weekly 有效
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day_of_month: Optional[int] = None, # 1-31，仅 monthly/quarterly/yearly 有效
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month: Optional[int] = None, # 1-12，仅 quarterly/yearly 有效
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**kwargs
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):
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"""
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通用周期任务工厂。
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:param fn: 任务函数
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:param period_type: 周期类型 (weekly/monthly/yearly/quarterly)
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:param run_on_start: 启动时是否立即运行一次
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:param hour: 时 (0-23)
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:param minute: 分 (0-59)
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:param weekday: 星期几 (0=周一, 6=周日)，仅 period_type=weekly 时使用
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:param day_of_month: 每月几号 (1-31)，仅 monthly/quarterly/yearly 时使用
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:param month: 月份 (1-12)，仅 quarterly/yearly 时使用（quarterly 时表示起始季度月份）
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"""
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def get_next_run_time(now: datetime.datetime) -> Optional[datetime.datetime]:
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"""根据规则计算下一次执行时间"""
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if period_type == PeriodType.WEEKLY:
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if weekday is None:
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raise ValueError("weekly 模式需要指定 weekday")
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# 计算目标星期
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days_ahead = (weekday - now.weekday()) % 7
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# 如果今天就是目标星期
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if days_ahead == 0:
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target_time = now.replace(hour=hour, minute=minute, second=0, microsecond=0)
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# 如果今天的目标时间已过，则推迟到下周
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if target_time <= now and not run_on_start:
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days_ahead = 7
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else:
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return target_time
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next_date = now + relativedelta(days=days_ahead)
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return datetime.datetime(
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next_date.year, next_date.month, next_date.day,
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hour, minute, 0
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)
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elif period_type == PeriodType.MONTHLY:
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if day_of_month is None:
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raise ValueError("monthly 模式需要指定 day_of_month")
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# 获取当前月份的最后一天
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last_day = (now.replace(day=1) + relativedelta(months=1) - relativedelta(days=1)).day
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target_day = min(day_of_month, last_day)
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candidate = now.replace(day=target_day, hour=hour, minute=minute, second=0, microsecond=0)
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# 如果候选时间已过，则下个月
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if candidate <= now and not run_on_start:
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next_month = now + relativedelta(months=1)
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last_day_next = (next_month.replace(day=1) + relativedelta(months=1) - relativedelta(days=1)).day
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target_day_next = min(day_of_month, last_day_next)
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candidate = next_month.replace(day=target_day_next, hour=hour, minute=minute, second=0,
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microsecond=0)
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return candidate
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elif period_type == PeriodType.QUARTERLY:
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if day_of_month is None or month is None:
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raise ValueError("quarterly 模式需要指定 day_of_month 和 month（起始季度月份）")
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# 修正：计算季度的月份
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q_months = []
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for i in range(4):
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qm = month + i * 3
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if qm > 12:
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qm -= 12
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q_months.append(qm)
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# 查找下一个季度月
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target_month = None
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target_year = now.year
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for qm in sorted(q_months):
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if qm > now.month:
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target_month = qm
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break
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if target_month is None:
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target_month = q_months[0]
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target_year += 1
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# 处理日期有效性
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last_day = (datetime.datetime(target_year, target_month, 1) +
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relativedelta(months=1) - relativedelta(days=1)).day
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target_day = min(day_of_month, last_day)
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candidate = datetime.datetime(target_year, target_month, target_day, hour, minute, 0)
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if candidate <= now and not run_on_start:
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# 跳到下个季度
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candidate = candidate + relativedelta(months=3)
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return candidate
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elif period_type == PeriodType.YEARLY:
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if day_of_month is None or month is None:
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raise ValueError("yearly 模式需要指定 day_of_month 和 month")
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# 检查年份
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try:
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candidate = datetime.datetime(now.year, month, day_of_month, hour, minute, 0)
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except ValueError:
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# 日期无效（如2月30日），取当月最后一天
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last_day = (datetime.datetime(now.year, month, 1) +
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relativedelta(months=1) - relativedelta(days=1)).day
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candidate = datetime.datetime(now.year, month, last_day, hour, minute, 0)
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if candidate <= now and not run_on_start:
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try:
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candidate = datetime.datetime(now.year + 1, month, day_of_month, hour, minute, 0)
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except ValueError:
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last_day = (datetime.datetime(now.year + 1, month, 1) +
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relativedelta(months=1) - relativedelta(days=1)).day
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candidate = datetime.datetime(now.year + 1, month, last_day, hour, minute, 0)
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return candidate
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async def task_warp():
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if fn is not None:
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try:
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_result = fn(**kwargs)
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if isinstance(_result, Awaitable):
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await _result
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except Exception as e:
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echo_log(msg=e, level=logging.ERROR, is_log_exc=True)
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async def task_loop():
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if fn is None:
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return
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_log_next_time = True
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_run_on_start = run_on_start
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next_time = get_next_run_time(datetime.datetime.now())
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while self.is_running:
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now = datetime.datetime.now()
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if _run_on_start or now >= next_time:
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await task_warp()
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_run_on_start = False
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# 执行完后，基于当前时间重新计算下一次
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next_time = get_next_run_time(now)
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_log_next_time = True
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else:
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if _log_next_time and self.log_next_time:
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delta = relativedelta(next_time, now)
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echo_log(
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f"距下次执行：{fn.__name__} 还有：{delta.days}天 {delta.hours}时 {delta.minutes}分 {delta.seconds}秒")
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_log_next_time = False
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await asyncio.sleep(1)
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_loop = self.event_loop()
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return _loop.create_task(task_loop())
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def add_task(self, creator: Callable, fn: Callable, **kwargs):
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"""
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添加任务。注意：这里只是存储创建参数，直到任务启动前，才实际把任务创建出来。
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||||
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:param creator: 任务工厂，对应：应延时任务工厂、日常任务工厂
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:param fn: 任务函数，即任务对应的实际功能函数
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||||
:param kwargs: 任务函数的参数
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"""
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_d = {
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'creator': creator, # 创建器，对应延时任务和日常任务
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||||
'fn': fn, 'kwargs': kwargs # 任务函数及其参数
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||||
}
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self._create_task_params.append(_d)
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||||
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||||
def rebuild_task_list(self):
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||||
"""
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||||
重建任务列表。
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||||
:return: 任务列表
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||||
"""
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||||
self.task_list.clear()
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||||
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||||
# 遍历创建器列表，创建任务
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||||
for _ctp in self._create_task_params:
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||||
_creator: Callable = _ctp.get('creator')
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||||
_fn: Callable = _ctp.get('fn')
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||||
_kwargs: dict = _ctp.get('kwargs')
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||||
_task = _creator(_fn, **_kwargs)
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||||
self.task_list.append(_task)
|
||||
|
||||
return self.task_list
|
||||
|
||||
async def run_tasks(self):
|
||||
"""
|
||||
执行任务。支持多任务同时启动，如：预统计服务、设备数据同步服务等。
|
||||
"""
|
||||
try:
|
||||
self.rebuild_task_list()
|
||||
echo_log(f'{self.service_name}启动成功.')
|
||||
await asyncio.gather(*self.task_list)
|
||||
except Exception as e:
|
||||
echo_log(msg=e, level=logging.ERROR, is_log_exc=True)
|
||||
|
||||
def start_service(self, env_check: bool = True):
|
||||
"""
|
||||
以控制台服务方式启动服务。
|
||||
"""
|
||||
echo_log(f'正在启动{self.service_name}...')
|
||||
|
||||
try:
|
||||
if env_check:
|
||||
# 检测 MySQL 服务是否正常
|
||||
echo_log('检测 Database 服务...')
|
||||
BaseAdapter.ping()
|
||||
|
||||
# 注意，这里是取得协程
|
||||
_future = self.run_tasks()
|
||||
# 开始执行任务事件循环
|
||||
_loop = self.event_loop()
|
||||
_loop.run_until_complete(_future)
|
||||
except KeyboardInterrupt:
|
||||
echo_log(msg='KeyboardInterrupt')
|
||||
self.stop_service()
|
||||
except Exception as e:
|
||||
echo_log(msg=e, level=logging.ERROR, is_log_exc=True)
|
||||
|
||||
def stop_service(self):
|
||||
"""
|
||||
停止服务。
|
||||
"""
|
||||
self.is_running = False
|
||||
echo_log(f'{self.service_name}已停止.')
|
||||
|
||||
def start(self, env_check: bool = True):
|
||||
"""
|
||||
以驻内存服务方式启动服务。
|
||||
"""
|
||||
ds = DaemonizeService(pid_file=self.pid_file, name=f'{self.service_name}')
|
||||
ds.set_start_callback(self.start_service, env_check=env_check)
|
||||
ds.set_term_callback(self.stop_service)
|
||||
ds.start()
|
||||
|
||||
def stop(self, env_check: bool = True):
|
||||
"""
|
||||
停止驻内存服务。
|
||||
"""
|
||||
ds = DaemonizeService(pid_file=self.pid_file, name=f'{self.service_name}')
|
||||
ds.set_start_callback(self.start_service, env_check=env_check)
|
||||
ds.set_term_callback(self.stop_service)
|
||||
ds.stop()
|
||||
Reference in New Issue
Block a user