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324 lines
12 KiB
Python
324 lines
12 KiB
Python
import os
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import re
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from functools import reduce, wraps
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import pytz
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import requests
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from apscheduler.schedulers.background import BackgroundScheduler
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from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
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from apscheduler.executors.pool import ProcessPoolExecutor
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from apscheduler.jobstores.base import JobLookupError
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from command import CommandRegistry, hub as cmdhub
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from command import CommandNotExistsError, CommandScopeError, CommandPermissionError
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from commands import core
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from little_shit import get_db_dir, get_command_args_start_flags, get_target
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_db_url = 'sqlite:///' + os.path.join(get_db_dir(), 'scheduler.sqlite')
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_scheduler = BackgroundScheduler(
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jobstores={
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'default': SQLAlchemyJobStore(url=_db_url)
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},
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executors={
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'default': ProcessPoolExecutor(max_workers=5)
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},
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timezone=pytz.timezone('Asia/Shanghai')
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)
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_command_args_start_flags = get_command_args_start_flags()
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_args_split_sep = '[ \n\t]'
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def _init():
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_scheduler.start()
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__registry__ = cr = CommandRegistry(init_func=_init)
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class _InvalidTriggerArgsError(Exception):
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pass
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class _IncompleteArgsError(Exception):
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pass
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def _call_commands(job_id, command_list, ctx_msg):
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for command in command_list:
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try:
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cmdhub.call(command[0], command[1], ctx_msg)
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except CommandNotExistsError:
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core.echo('没有找到计划任务 %s 中的命令 %s' % (job_id, command[0]), ctx_msg)
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except CommandPermissionError:
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core.echo('你没有权限执行计划任务 %s 中的命令 %s' % (job_id, command[0]), ctx_msg)
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except CommandScopeError as se:
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core.echo(
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'计划任务 %s 中的命令 %s 不支持 %s' % (job_id, command[0], se.msg_type),
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ctx_msg
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)
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def _check_target(func):
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@wraps(func)
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def wrapper(args_text, ctx_msg, internal=False, *args, **kwargs):
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target = get_target(ctx_msg)
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if not target:
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_send_fail_to_get_target_msg(ctx_msg, internal)
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return None
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else:
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return func(args_text, ctx_msg, internal, *args, **kwargs)
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return wrapper
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@cr.register('cron_check', 'cron-check', 'cron_test', 'cron-test')
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def cron_check(args_text, ctx_msg):
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cron = args_text.strip()
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if not cron:
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core.echo('请指定要检查的 Cron 时间表达式', ctx_msg)
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return
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resp = requests.post('http://tool.lu/crontab/ajax.html', data={'expression': cron})
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if resp.status_code == 200:
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data = resp.json()
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if data.get('status') and 'dates' in data:
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reply = '接下来 7 次的执行时间：\n' + '\n'.join(data['dates'])
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core.echo(reply, ctx_msg)
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return
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core.echo('检查失败，可能因为表达式格式错误或服务器连接不上', ctx_msg)
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@cr.register('add_job', 'add-job', 'add')
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@cr.restrict(full_command_only=True, group_admin_only=True)
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@_check_target
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def add_job(args_text, ctx_msg, internal=False):
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if args_text.strip() in ('', 'help', '-h', '--help') and not internal:
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_send_add_job_help_msg(ctx_msg, internal)
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args_text = args_text.lstrip()
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try:
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# Parse trigger args
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trigger_args = {}
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if args_text.startswith('-'):
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# options mode
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key_dict = {
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'-M': 'minute',
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'-H': 'hour',
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'-d': 'day',
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'-m': 'month',
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'-w': 'day_of_week'
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}
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while args_text.startswith('-') and not args_text.startswith('--'):
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try:
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option, value, args_text = re.split(_args_split_sep, args_text, 2)
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trigger_args[key_dict[option]] = value
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args_text = args_text.lstrip()
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except (ValueError, KeyError):
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# Split failed or get key failed, which means format is not correct
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raise _InvalidTriggerArgsError
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else:
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# cron mode
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try:
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trigger_args['minute'], \
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trigger_args['hour'], \
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trigger_args['day'], \
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trigger_args['month'], \
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trigger_args['day_of_week'], \
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args_text = re.split(_args_split_sep, args_text, 5)
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args_text = args_text.lstrip()
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except ValueError:
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# Split failed, which means format is not correct
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raise _InvalidTriggerArgsError
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# Parse '--multi' option
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multi = False
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if args_text.startswith('--multi '):
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multi = True
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tmp = re.split(_args_split_sep, args_text, 1)
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if len(tmp) < 2:
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raise _IncompleteArgsError
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args_text = tmp[1].lstrip()
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tmp = re.split(_args_split_sep, args_text, 1)
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if len(tmp) < 2:
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raise _IncompleteArgsError
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job_id_without_suffix, command_raw = tmp
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job_id = job_id_without_suffix + '_' + get_target(ctx_msg)
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command_list = []
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if multi:
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command_raw_list = command_raw.split('\n')
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for cmd_raw in command_raw_list:
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cmd_raw = cmd_raw.lstrip()
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if not cmd_raw:
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continue
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tmp = re.split('|'.join(_command_args_start_flags), cmd_raw, 1)
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if len(tmp) < 2:
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tmp.append('')
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command_list.append(tuple(tmp))
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else:
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command_raw = command_raw.lstrip()
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tmp = re.split('|'.join(_command_args_start_flags), command_raw, 1)
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if len(tmp) < 2:
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tmp.append('')
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command_list.append(tuple(tmp))
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job_args = {
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'job_id': job_id_without_suffix,
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'command_list': command_list,
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'ctx_msg': ctx_msg
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}
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job = _scheduler.add_job(_call_commands, kwargs=job_args, trigger='cron', **trigger_args,
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id=job_id, replace_existing=True, misfire_grace_time=30)
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_send_text('成功添加计划任务 ' + job_id_without_suffix, ctx_msg, internal)
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return job
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except _InvalidTriggerArgsError:
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_send_add_job_trigger_args_invalid_msg(ctx_msg, internal)
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except _IncompleteArgsError:
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_send_add_job_incomplete_args_msg(ctx_msg, internal)
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@cr.register('remove_job', 'remove-job', 'remove')
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@cr.restrict(full_command_only=True, group_admin_only=True)
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@_check_target
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def remove_job(args_text, ctx_msg, internal=False):
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job_id_without_suffix = args_text.strip()
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if not job_id_without_suffix:
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_send_text('请指定计划任务的 ID', ctx_msg, internal)
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return False
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job_id = job_id_without_suffix + '_' + get_target(ctx_msg)
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try:
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_scheduler.remove_job(job_id, 'default')
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_send_text('成功删除计划任务 ' + job_id_without_suffix, ctx_msg, internal)
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return True
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except JobLookupError:
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_send_text('没有找到计划任务 ' + job_id_without_suffix, ctx_msg, internal)
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return False
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@cr.register('get_job', 'get-job', 'get')
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@cr.restrict(full_command_only=True)
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@_check_target
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def get_job(args_text, ctx_msg, internal=False):
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job_id_without_suffix = args_text.strip()
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if not job_id_without_suffix:
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_send_text('请指定计划任务的 ID', ctx_msg, internal)
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return None
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job_id = job_id_without_suffix + '_' + get_target(ctx_msg)
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job = _scheduler.get_job(job_id, 'default')
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if internal:
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return job
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reply = '找到计划任务如下：\n'
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reply += 'ID：' + job_id_without_suffix + '\n'
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reply += '下次触发时间：\n%s\n' % job.next_run_time.strftime('%Y-%m-%d %H:%M')
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reply += '命令：\n'
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command_list = job.kwargs['command_list']
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if len(command_list) > 1:
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reply += reduce(lambda x, y: x[0] + ' ' + x[1] + '\n' + y[0] + ' ' + y[1], command_list)
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else:
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reply += command_list[0][0] + ' ' + command_list[0][1]
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_send_text(reply, ctx_msg, internal)
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@cr.register('list_jobs', 'list-jobs', 'list')
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@cr.restrict(full_command_only=True)
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@_check_target
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def list_jobs(_, ctx_msg, internal=False):
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target = get_target(ctx_msg)
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job_id_suffix = '_' + target
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jobs = list(filter(lambda j: j.id.endswith(job_id_suffix), _scheduler.get_jobs('default')))
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if internal:
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return jobs
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for job in jobs:
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job_id = job.id[:-len(job_id_suffix)]
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command_list = job.kwargs['command_list']
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reply = 'ID：' + job_id + '\n'
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reply += '下次触发时间：\n%s\n' % job.next_run_time.strftime('%Y-%m-%d %H:%M')
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reply += '命令：\n'
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if len(command_list) > 1:
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reply += reduce(lambda x, y: x[0] + ' ' + x[1] + '\n' + y[0] + ' ' + y[1], command_list)
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else:
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reply += command_list[0][0] + ' ' + command_list[0][1]
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_send_text(reply, ctx_msg, internal)
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if len(jobs):
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_send_text('以上', ctx_msg, internal)
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else:
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_send_text('还没有添加计划任务', ctx_msg, internal)
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def _send_text(text, ctx_msg, internal):
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if not internal:
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core.echo(text, ctx_msg)
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def _send_fail_to_get_target_msg(ctx_msg, internal):
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_send_text(
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'无法获取 target，可能因为不支持当前消息类型（如，不支持微信群组消息）'
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'或由于延迟还没能加载到用户的固定 ID（如，微信号）',
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ctx_msg,
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internal
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)
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def _send_add_job_help_msg(ctx_msg, internal):
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_send_text(
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'此为高级命令！如果你不知道自己在做什么，请不要使用此命令。\n\n'
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'使用方法：\n'
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'/scheduler.add_job options|cron [--multi] job_id command\n'
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'说明：\n'
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'options 和 cron 用来表示触发参数，有且只能有其一，格式分别如下：\n'
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'options：\n'
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' -M 分，0 到 59\n'
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' -H 时，0 到 23\n'
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' -d 日，1 到 31\n'
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' -m 月，1 到 12\n'
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' -w 星期，0 到 6，其中 0 表示星期一，6 表示星期天\n'
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' 以上选项的值的表示法和下面的 cron 模式相同\n'
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'cron：\n'
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' 此模式和 Linux 的 crontab 文件的格式、顺序相同（除了星期是从 0 到 6），一共 5 个用空格隔开的参数\n'
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'\n'
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'剩下三个参数见下一条',
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ctx_msg,
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internal
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)
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_send_text(
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'--multi 为可选项，表示读取多条命令\n'
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'job_id 为必填项，允许使用符合正则 [_\-a-zA-Z0-9] 的字符，作为计划任务的唯一标识，如果指定重复的 ID，则会覆盖原先已有的\n'
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'command 为必填项，从 job_id 之后第一个非空白字符开始，如果加了 --multi 选项，则每行算一条命令，否则一直到消息结束算作一整条命令（注意这里的命令不要加 / 前缀）\n'
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'\n'
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'例 1：\n'
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'以下命令将添加计划在每天晚上 10 点推送当天的知乎日报，并发送一条鼓励的消息：\n'
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'/scheduler.add_job 0 22 * * * --multi zhihu-daily-job\n'
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'zhihu\n'
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'echo 今天又是很棒的一天哦！\n'
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'例 2：\n'
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'以下命令将每 5 分钟发送一条提示：\n'
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'/scheduler.add_job -M */5 tip-job echo 提示内容',
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ctx_msg,
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internal
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)
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def _send_add_job_trigger_args_invalid_msg(ctx_msg, internal):
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_send_text(
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'触发参数的格式不正确\n'
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'如需帮助，请发送如下命令：\n'
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'/scheduler.add_job --help',
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ctx_msg,
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internal
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)
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def _send_add_job_incomplete_args_msg(ctx_msg, internal):
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_send_text(
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'缺少必须的参数\n'
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'如需帮助，请发送如下命令：\n'
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'/scheduler.add_job --help',
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ctx_msg,
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internal
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)
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