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#!/usr/bin/env python |
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# -*- encoding: utf-8 -*- |
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# vim: set et sw=4 ts=4 sts=4 ff=unix fenc=utf8: |
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# Author: Binux<[email protected]> |
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# http://binux.me |
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# Created on 2014-02-07 17:05:11 |
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import os |
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import json |
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import time |
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import logging |
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import itertools |
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from collections import deque |
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from six import iteritems, itervalues |
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from pyspider.libs import counter, utils |
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from pyspider.libs.queue import Queue |
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from .task_queue import TaskQueue |
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logger = logging.getLogger('scheduler') |
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class Scheduler(object): |
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UPDATE_PROJECT_INTERVAL = 5 * 60 |
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default_schedule = { |
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'priority': 0, |
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'retries': 3, |
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'exetime': 0, |
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'age': -1, |
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'itag': None, |
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} |
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LOOP_LIMIT = 1000 |
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LOOP_INTERVAL = 0.1 |
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ACTIVE_TASKS = 100 |
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INQUEUE_LIMIT = 0 |
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EXCEPTION_LIMIT = 3 |
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DELETE_TIME = 24 * 60 * 60 |
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DEFAULT_RETRY_DELAY = { |
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0: 30, |
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1: 1*60*60, |
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2: 6*60*60, |
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3: 12*60*60, |
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'': 24*60*60 |
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} |
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def __init__(self, taskdb, projectdb, newtask_queue, status_queue, |
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out_queue, data_path='./data', resultdb=None): |
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self.taskdb = taskdb |
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self.projectdb = projectdb |
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self.resultdb = resultdb |
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self.newtask_queue = newtask_queue |
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self.status_queue = status_queue |
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self.out_queue = out_queue |
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self.data_path = data_path |
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self._send_buffer = deque() |
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self._quit = False |
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self._exceptions = 0 |
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self.projects = dict() |
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self._force_update_project = False |
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self._last_update_project = 0 |
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self.task_queue = dict() |
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self._last_tick = int(time.time()) |
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self._cnt = { |
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"5m_time": counter.CounterManager( |
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lambda: counter.TimebaseAverageEventCounter(30, 10)), |
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"5m": counter.CounterManager( |
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lambda: counter.TimebaseAverageWindowCounter(30, 10)), |
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"1h": counter.CounterManager( |
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lambda: counter.TimebaseAverageWindowCounter(60, 60)), |
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"1d": counter.CounterManager( |
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lambda: counter.TimebaseAverageWindowCounter(10 * 60, 24 * 6)), |
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"all": counter.CounterManager( |
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lambda: counter.TotalCounter()), |
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} |
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self._cnt['1h'].load(os.path.join(self.data_path, 'scheduler.1h')) |
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self._cnt['1d'].load(os.path.join(self.data_path, 'scheduler.1d')) |
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self._cnt['all'].load(os.path.join(self.data_path, 'scheduler.all')) |
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self._last_dump_cnt = 0 |
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def _update_projects(self): |
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'''Check project update''' |
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now = time.time() |
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if ( |
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not self._force_update_project |
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and self._last_update_project + self.UPDATE_PROJECT_INTERVAL > now |
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): |
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return |
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for project in self.projectdb.check_update(self._last_update_project): |
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self._update_project(project) |
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logger.debug("project: %s updated.", project['name']) |
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self._force_update_project = False |
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self._last_update_project = now |
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def _update_project(self, project): |
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'''update one project''' |
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if project['name'] not in self.projects: |
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self.projects[project['name']] = {} |
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self.projects[project['name']].update(project) |
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self.projects[project['name']]['md5sum'] = utils.md5string(project['script']) |
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if not self.projects[project['name']].get('active_tasks', None): |
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self.projects[project['name']]['active_tasks'] = deque(maxlen=self.ACTIVE_TASKS) |
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# load task queue when project is running and delete task_queue when project is stoped |
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if project['status'] in ('RUNNING', 'DEBUG'): |
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if project['name'] not in self.task_queue: |
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self._load_tasks(project['name']) |
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self.task_queue[project['name']].rate = project['rate'] |
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self.task_queue[project['name']].burst = project['burst'] |
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# update project runtime info from processor by sending a _on_get_info |
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# request, result is in status_page.track.save |
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self.on_select_task({ |
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'taskid': '_on_get_info', |
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'project': project['name'], |
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'url': 'data:,_on_get_info', |
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'status': self.taskdb.SUCCESS, |
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'fetch': { |
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'save': ['min_tick', 'retry_delay'], |
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}, |
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'process': { |
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'callback': '_on_get_info', |
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}, |
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}) |
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else: |
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if project['name'] in self.task_queue: |
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self.task_queue[project['name']].rate = 0 |
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self.task_queue[project['name']].burst = 0 |
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del self.task_queue[project['name']] |
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scheduler_task_fields = ['taskid', 'project', 'schedule', ] |
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def _load_tasks(self, project): |
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'''load tasks from database''' |
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self.task_queue[project] = TaskQueue(rate=0, burst=0) |
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for task in self.taskdb.load_tasks( |
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self.taskdb.ACTIVE, project, self.scheduler_task_fields |
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): |
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taskid = task['taskid'] |
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_schedule = task.get('schedule', self.default_schedule) |
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priority = _schedule.get('priority', self.default_schedule['priority']) |
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exetime = _schedule.get('exetime', self.default_schedule['exetime']) |
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self.task_queue[project].put(taskid, priority, exetime) |
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logger.debug('project: %s loaded %d tasks.', project, len(self.task_queue[project])) |
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if self.projects[project]['status'] in ('RUNNING', 'DEBUG'): |
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self.task_queue[project].rate = self.projects[project]['rate'] |
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self.task_queue[project].burst = self.projects[project]['burst'] |
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else: |
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self.task_queue[project].rate = 0 |
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self.task_queue[project].burst = 0 |
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if project not in self._cnt['all']: |
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status_count = self.taskdb.status_count(project) |
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self._cnt['all'].value( |
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(project, 'success'), |
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status_count.get(self.taskdb.SUCCESS, 0) |
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) |
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self._cnt['all'].value( |
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(project, 'failed'), |
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status_count.get(self.taskdb.FAILED, 0) + status_count.get(self.taskdb.BAD, 0) |
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) |
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self._cnt['all'].value((project, 'pending'), len(self.task_queue[project])) |
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def task_verify(self, task): |
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''' |
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return False if any of 'taskid', 'project', 'url' is not in task dict |
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or project in not in task_queue |
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''' |
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for each in ('taskid', 'project', 'url', ): |
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if each not in task or not task[each]: |
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logger.error('%s not in task: %.200r', each, task) |
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return False |
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if task['project'] not in self.task_queue: |
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logger.error('unknown project: %s', task['project']) |
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return False |
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return True |
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def insert_task(self, task): |
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'''insert task into database''' |
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return self.taskdb.insert(task['project'], task['taskid'], task) |
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def update_task(self, task): |
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'''update task in database''' |
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return self.taskdb.update(task['project'], task['taskid'], task) |
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def put_task(self, task): |
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'''put task to task queue''' |
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_schedule = task.get('schedule', self.default_schedule) |
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self.task_queue[task['project']].put( |
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task['taskid'], |
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priority=_schedule.get('priority', self.default_schedule['priority']), |
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exetime=_schedule.get('exetime', self.default_schedule['exetime']) |
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) |
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def send_task(self, task, force=True): |
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''' |
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dispatch task to fetcher |
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out queue may have size limit to prevent block, a send_buffer is used |
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''' |
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try: |
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self.out_queue.put_nowait(task) |
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except Queue.Full: |
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if force: |
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self._send_buffer.appendleft(task) |
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else: |
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raise |
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def _check_task_done(self): |
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'''Check status queue''' |
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cnt = 0 |
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try: |
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while True: |
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task = self.status_queue.get_nowait() |
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# check _on_get_info result here |
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if task.get('taskid') == '_on_get_info' and 'project' in task and 'track' in task: |
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self.projects[task['project']].update(task['track'].get('save') or {}) |
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logger.info( |
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'%s on_get_info %r', task['project'], task['track'].get('save', {}) |
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) |
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continue |
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elif not self.task_verify(task): |
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continue |
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self.on_task_status(task) |
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cnt += 1 |
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except Queue.Empty: |
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pass |
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return cnt |
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merge_task_fields = ['taskid', 'project', 'url', 'status', 'schedule', 'lastcrawltime'] |
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def _check_request(self): |
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'''Check new task queue''' |
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tasks = {} |
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while len(tasks) < self.LOOP_LIMIT: |
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try: |
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task = self.newtask_queue.get_nowait() |
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except Queue.Empty: |
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break |
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if isinstance(task, list): |
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_tasks = task |
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else: |
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_tasks = (task, ) |
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for task in _tasks: |
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if not self.task_verify(task): |
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continue |
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if task['taskid'] in self.task_queue[task['project']]: |
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if not task.get('schedule', {}).get('force_update', False): |
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logger.debug('ignore newtask %(project)s:%(taskid)s %(url)s', task) |
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continue |
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if task['taskid'] in tasks: |
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if not task.get('schedule', {}).get('force_update', False): |
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continue |
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tasks[task['taskid']] = task |
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for task in itervalues(tasks): |
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if self.INQUEUE_LIMIT and len(self.task_queue[task['project']]) >= self.INQUEUE_LIMIT: |
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logger.debug('overflow task %(project)s:%(taskid)s %(url)s', task) |
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continue |
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oldtask = self.taskdb.get_task(task['project'], task['taskid'], |
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fields=self.merge_task_fields) |
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if oldtask: |
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task = self.on_old_request(task, oldtask) |
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else: |
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task = self.on_new_request(task) |
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return len(tasks) |
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def _check_cronjob(self): |
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"""Check projects cronjob tick, return True when a new tick is sended""" |
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now = time.time() |
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self._last_tick = int(self._last_tick) |
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if now - self._last_tick < 1: |
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return False |
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self._last_tick += 1 |
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for project in itervalues(self.projects): |
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if project['status'] not in ('DEBUG', 'RUNNING'): |
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continue |
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if project.get('min_tick', 0) == 0: |
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continue |
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if self._last_tick % int(project['min_tick']) != 0: |
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continue |
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self.on_select_task({ |
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'taskid': '_on_cronjob', |
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'project': project['name'], |
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'url': 'data:,_on_cronjob', |
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'status': self.taskdb.SUCCESS, |
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'fetch': { |
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'save': { |
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'tick': self._last_tick, |
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}, |
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}, |
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'process': { |
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'callback': '_on_cronjob', |
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}, |
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}) |
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return True |
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307
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308
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request_task_fields = [ |
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309
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'taskid', |
|
310
|
|
|
'project', |
|
311
|
|
|
'url', |
|
312
|
|
|
'status', |
|
313
|
|
|
'schedule', |
|
314
|
|
|
'fetch', |
|
315
|
|
|
'process', |
|
316
|
|
|
'track', |
|
317
|
|
|
'lastcrawltime' |
|
318
|
|
|
] |
|
319
|
|
|
|
|
320
|
|
|
def _check_select(self): |
|
321
|
|
|
'''Select task to fetch & process''' |
|
322
|
|
|
while self._send_buffer: |
|
323
|
|
|
_task = self._send_buffer.pop() |
|
324
|
|
|
try: |
|
325
|
|
|
# use force=False here to prevent automatic send_buffer append and get exception |
|
326
|
|
|
self.send_task(_task, False) |
|
327
|
|
|
except Queue.Full: |
|
328
|
|
|
self._send_buffer.append(_task) |
|
329
|
|
|
break |
|
330
|
|
|
|
|
331
|
|
|
if self.out_queue.full(): |
|
332
|
|
|
return {} |
|
333
|
|
|
|
|
334
|
|
|
taskids = [] |
|
335
|
|
|
cnt = 0 |
|
336
|
|
|
cnt_dict = dict() |
|
337
|
|
|
limit = self.LOOP_LIMIT |
|
338
|
|
|
for project, task_queue in iteritems(self.task_queue): |
|
339
|
|
|
if cnt >= limit: |
|
340
|
|
|
break |
|
341
|
|
|
|
|
342
|
|
|
# task queue |
|
343
|
|
|
self.task_queue[project].check_update() |
|
344
|
|
|
project_cnt = 0 |
|
345
|
|
|
|
|
346
|
|
|
# check send_buffer here. when not empty, out_queue may blocked. Not sending tasks |
|
347
|
|
|
while cnt < limit and project_cnt < limit / 10: |
|
348
|
|
|
taskid = task_queue.get() |
|
349
|
|
|
if not taskid: |
|
350
|
|
|
break |
|
351
|
|
|
|
|
352
|
|
|
taskids.append((project, taskid)) |
|
353
|
|
|
project_cnt += 1 |
|
354
|
|
|
cnt += 1 |
|
355
|
|
|
cnt_dict[project] = project_cnt |
|
356
|
|
|
|
|
357
|
|
|
for project, taskid in taskids: |
|
358
|
|
|
task = self.taskdb.get_task(project, taskid, fields=self.request_task_fields) |
|
359
|
|
|
if not task: |
|
360
|
|
|
continue |
|
361
|
|
|
task = self.on_select_task(task) |
|
362
|
|
|
|
|
363
|
|
|
return cnt_dict |
|
364
|
|
|
|
|
365
|
|
|
def _print_counter_log(self): |
|
366
|
|
|
# print top 5 active counters |
|
367
|
|
|
keywords = ('pending', 'success', 'retry', 'failed') |
|
368
|
|
|
total_cnt = {} |
|
369
|
|
|
project_actives = [] |
|
370
|
|
|
project_fails = [] |
|
371
|
|
|
for key in keywords: |
|
372
|
|
|
total_cnt[key] = 0 |
|
373
|
|
|
for project, subcounter in iteritems(self._cnt['5m']): |
|
374
|
|
|
actives = 0 |
|
375
|
|
|
for key in keywords: |
|
376
|
|
|
cnt = subcounter.get(key, None) |
|
377
|
|
|
if cnt: |
|
378
|
|
|
cnt = cnt.sum |
|
379
|
|
|
total_cnt[key] += cnt |
|
380
|
|
|
actives += cnt |
|
381
|
|
|
|
|
382
|
|
|
project_actives.append((actives, project)) |
|
383
|
|
|
|
|
384
|
|
|
fails = subcounter.get('failed', None) |
|
385
|
|
|
if fails: |
|
386
|
|
|
project_fails.append((fails.sum, project)) |
|
387
|
|
|
|
|
388
|
|
|
top_2_fails = sorted(project_fails, reverse=True)[:2] |
|
389
|
|
|
top_3_actives = sorted([x for x in project_actives if x[1] not in top_2_fails], |
|
390
|
|
|
reverse=True)[:5 - len(top_2_fails)] |
|
391
|
|
|
|
|
392
|
|
|
log_str = ("in 5m: new:%(pending)d,success:%(success)d," |
|
393
|
|
|
"retry:%(retry)d,failed:%(failed)d" % total_cnt) |
|
394
|
|
|
for _, project in itertools.chain(top_3_actives, top_2_fails): |
|
395
|
|
|
subcounter = self._cnt['5m'][project].to_dict(get_value='sum') |
|
396
|
|
|
log_str += " %s:%d,%d,%d,%d" % (project, |
|
397
|
|
|
subcounter.get('pending', 0), |
|
398
|
|
|
subcounter.get('success', 0), |
|
399
|
|
|
subcounter.get('retry', 0), |
|
400
|
|
|
subcounter.get('failed', 0)) |
|
401
|
|
|
logger.info(log_str) |
|
402
|
|
|
|
|
403
|
|
|
def _dump_cnt(self): |
|
404
|
|
|
'''Dump counters to file''' |
|
405
|
|
|
self._cnt['1h'].dump(os.path.join(self.data_path, 'scheduler.1h')) |
|
406
|
|
|
self._cnt['1d'].dump(os.path.join(self.data_path, 'scheduler.1d')) |
|
407
|
|
|
self._cnt['all'].dump(os.path.join(self.data_path, 'scheduler.all')) |
|
408
|
|
|
|
|
409
|
|
|
def _try_dump_cnt(self): |
|
410
|
|
|
'''Dump counters every 60 seconds''' |
|
411
|
|
|
now = time.time() |
|
412
|
|
|
if now - self._last_dump_cnt > 60: |
|
413
|
|
|
self._last_dump_cnt = now |
|
414
|
|
|
self._dump_cnt() |
|
415
|
|
|
self._print_counter_log() |
|
416
|
|
|
|
|
417
|
|
|
def _check_delete(self): |
|
418
|
|
|
'''Check project delete''' |
|
419
|
|
|
now = time.time() |
|
420
|
|
|
for project in list(itervalues(self.projects)): |
|
421
|
|
|
if project['status'] != 'STOP': |
|
422
|
|
|
continue |
|
423
|
|
|
if now - project['updatetime'] < self.DELETE_TIME: |
|
424
|
|
|
continue |
|
425
|
|
|
if 'delete' not in self.projectdb.split_group(project['group']): |
|
426
|
|
|
continue |
|
427
|
|
|
|
|
428
|
|
|
logger.warning("deleting project: %s!", project['name']) |
|
429
|
|
|
if project['name'] in self.task_queue: |
|
430
|
|
|
self.task_queue[project['name']].rate = 0 |
|
431
|
|
|
self.task_queue[project['name']].burst = 0 |
|
432
|
|
|
del self.task_queue[project['name']] |
|
433
|
|
|
del self.projects[project['name']] |
|
434
|
|
|
self.taskdb.drop(project['name']) |
|
435
|
|
|
self.projectdb.drop(project['name']) |
|
436
|
|
|
if self.resultdb: |
|
437
|
|
|
self.resultdb.drop(project['name']) |
|
438
|
|
|
|
|
439
|
|
|
def __len__(self): |
|
440
|
|
|
return sum(len(x) for x in itervalues(self.task_queue)) |
|
441
|
|
|
|
|
442
|
|
|
def quit(self): |
|
443
|
|
|
'''Set quit signal''' |
|
444
|
|
|
self._quit = True |
|
445
|
|
|
|
|
446
|
|
|
def run_once(self): |
|
447
|
|
|
'''comsume queues and feed tasks to fetcher, once''' |
|
448
|
|
|
|
|
449
|
|
|
self._update_projects() |
|
450
|
|
|
self._check_task_done() |
|
451
|
|
|
self._check_request() |
|
452
|
|
|
while self._check_cronjob(): |
|
453
|
|
|
pass |
|
454
|
|
|
self._check_select() |
|
455
|
|
|
self._check_delete() |
|
456
|
|
|
self._try_dump_cnt() |
|
457
|
|
|
|
|
458
|
|
|
def run(self): |
|
459
|
|
|
'''Start scheduler loop''' |
|
460
|
|
|
logger.info("loading projects") |
|
461
|
|
|
|
|
462
|
|
|
while not self._quit: |
|
463
|
|
|
try: |
|
464
|
|
|
time.sleep(self.LOOP_INTERVAL) |
|
465
|
|
|
self.run_once() |
|
466
|
|
|
self._exceptions = 0 |
|
467
|
|
|
except KeyboardInterrupt: |
|
468
|
|
|
break |
|
469
|
|
|
except Exception as e: |
|
470
|
|
|
logger.exception(e) |
|
471
|
|
|
self._exceptions += 1 |
|
472
|
|
|
if self._exceptions > self.EXCEPTION_LIMIT: |
|
473
|
|
|
break |
|
474
|
|
|
continue |
|
475
|
|
|
|
|
476
|
|
|
logger.info("scheduler exiting...") |
|
477
|
|
|
self._dump_cnt() |
|
478
|
|
|
|
|
479
|
|
|
def trigger_on_start(self, project): |
|
480
|
|
|
'''trigger an on_start callback of project''' |
|
481
|
|
|
self.newtask_queue.put({ |
|
482
|
|
|
"project": project, |
|
483
|
|
|
"taskid": "on_start", |
|
484
|
|
|
"url": "data:,on_start", |
|
485
|
|
|
"process": { |
|
486
|
|
|
"callback": "on_start", |
|
487
|
|
|
}, |
|
488
|
|
|
}) |
|
489
|
|
|
|
|
490
|
|
|
def xmlrpc_run(self, port=23333, bind='127.0.0.1', logRequests=False): |
|
491
|
|
|
'''Start xmlrpc interface''' |
|
492
|
|
|
try: |
|
493
|
|
|
from six.moves.xmlrpc_server import SimpleXMLRPCServer |
|
494
|
|
|
except ImportError: |
|
495
|
|
|
from SimpleXMLRPCServer import SimpleXMLRPCServer |
|
496
|
|
|
|
|
497
|
|
|
server = SimpleXMLRPCServer((bind, port), allow_none=True, logRequests=logRequests) |
|
498
|
|
|
server.register_introspection_functions() |
|
499
|
|
|
server.register_multicall_functions() |
|
500
|
|
|
|
|
501
|
|
|
server.register_function(self.quit, '_quit') |
|
502
|
|
|
server.register_function(self.__len__, 'size') |
|
503
|
|
|
|
|
504
|
|
|
def dump_counter(_time, _type): |
|
505
|
|
|
try: |
|
506
|
|
|
return self._cnt[_time].to_dict(_type) |
|
507
|
|
|
except: |
|
508
|
|
|
logger.exception('') |
|
509
|
|
|
server.register_function(dump_counter, 'counter') |
|
510
|
|
|
|
|
511
|
|
|
def new_task(task): |
|
512
|
|
|
if self.task_verify(task): |
|
513
|
|
|
self.newtask_queue.put(task) |
|
514
|
|
|
return True |
|
515
|
|
|
return False |
|
516
|
|
|
server.register_function(new_task, 'newtask') |
|
517
|
|
|
|
|
518
|
|
|
def send_task(task): |
|
519
|
|
|
'''dispatch task to fetcher''' |
|
520
|
|
|
self.send_task(task) |
|
521
|
|
|
return True |
|
522
|
|
|
server.register_function(send_task, 'send_task') |
|
523
|
|
|
|
|
524
|
|
|
def update_project(): |
|
525
|
|
|
self._force_update_project = True |
|
526
|
|
|
server.register_function(update_project, 'update_project') |
|
527
|
|
|
|
|
528
|
|
|
def get_active_tasks(project=None, limit=100): |
|
529
|
|
|
allowed_keys = set(( |
|
530
|
|
|
'taskid', |
|
531
|
|
|
'project', |
|
532
|
|
|
'status', |
|
533
|
|
|
'url', |
|
534
|
|
|
'lastcrawltime', |
|
535
|
|
|
'updatetime', |
|
536
|
|
|
'track', |
|
537
|
|
|
)) |
|
538
|
|
|
track_allowed_keys = set(( |
|
539
|
|
|
'ok', |
|
540
|
|
|
'time', |
|
541
|
|
|
'follows', |
|
542
|
|
|
'status_code', |
|
543
|
|
|
)) |
|
544
|
|
|
|
|
545
|
|
|
iters = [iter(x['active_tasks']) for k, x in iteritems(self.projects) |
|
546
|
|
|
if x and (k == project if project else True)] |
|
547
|
|
|
tasks = [next(x, None) for x in iters] |
|
548
|
|
|
result = [] |
|
549
|
|
|
|
|
550
|
|
|
while len(result) < limit and tasks and not all(x is None for x in tasks): |
|
551
|
|
|
updatetime, task = t = max(t for t in tasks if t) |
|
552
|
|
|
i = tasks.index(t) |
|
553
|
|
|
tasks[i] = next(iters[i], None) |
|
554
|
|
|
for key in list(task): |
|
555
|
|
|
if key == 'track': |
|
556
|
|
|
for k in list(task[key].get('fetch', [])): |
|
557
|
|
|
if k not in track_allowed_keys: |
|
558
|
|
|
del task[key]['fetch'][k] |
|
559
|
|
|
for k in list(task[key].get('process', [])): |
|
560
|
|
|
if k not in track_allowed_keys: |
|
561
|
|
|
del task[key]['process'][k] |
|
562
|
|
|
if key in allowed_keys: |
|
563
|
|
|
continue |
|
564
|
|
|
del task[key] |
|
565
|
|
|
result.append(t) |
|
566
|
|
|
# fix for "<type 'exceptions.TypeError'>:dictionary key must be string" |
|
567
|
|
|
# have no idea why |
|
568
|
|
|
return json.loads(json.dumps(result)) |
|
569
|
|
|
server.register_function(get_active_tasks, 'get_active_tasks') |
|
570
|
|
|
|
|
571
|
|
|
server.timeout = 0.5 |
|
572
|
|
|
while not self._quit: |
|
573
|
|
|
server.handle_request() |
|
574
|
|
|
server.server_close() |
|
575
|
|
|
|
|
576
|
|
|
def on_new_request(self, task): |
|
577
|
|
|
'''Called when a new request is arrived''' |
|
578
|
|
|
task['status'] = self.taskdb.ACTIVE |
|
579
|
|
|
self.insert_task(task) |
|
580
|
|
|
self.put_task(task) |
|
581
|
|
|
|
|
582
|
|
|
project = task['project'] |
|
583
|
|
|
self._cnt['5m'].event((project, 'pending'), +1) |
|
584
|
|
|
self._cnt['1h'].event((project, 'pending'), +1) |
|
585
|
|
|
self._cnt['1d'].event((project, 'pending'), +1) |
|
586
|
|
|
self._cnt['all'].event((project, 'pending'), +1) |
|
587
|
|
|
logger.info('new task %(project)s:%(taskid)s %(url)s', task) |
|
588
|
|
|
return task |
|
589
|
|
|
|
|
590
|
|
|
def on_old_request(self, task, old_task): |
|
591
|
|
|
'''Called when a crawled task is arrived''' |
|
592
|
|
|
now = time.time() |
|
593
|
|
|
|
|
594
|
|
|
_schedule = task.get('schedule', self.default_schedule) |
|
595
|
|
|
old_schedule = old_task.get('schedule', {}) |
|
596
|
|
|
|
|
597
|
|
|
restart = False |
|
598
|
|
|
schedule_age = _schedule.get('age', self.default_schedule['age']) |
|
599
|
|
|
if _schedule.get('itag') and _schedule['itag'] != old_schedule.get('itag'): |
|
600
|
|
|
restart = True |
|
601
|
|
|
elif schedule_age >= 0 and schedule_age + (old_task.get('lastcrawltime', 0) or 0) < now: |
|
602
|
|
|
restart = True |
|
603
|
|
|
elif _schedule.get('force_update'): |
|
604
|
|
|
restart = True |
|
605
|
|
|
|
|
606
|
|
|
if not restart: |
|
607
|
|
|
logger.debug('ignore newtask %(project)s:%(taskid)s %(url)s', task) |
|
608
|
|
|
return |
|
609
|
|
|
|
|
610
|
|
|
task['status'] = self.taskdb.ACTIVE |
|
611
|
|
|
self.update_task(task) |
|
612
|
|
|
self.put_task(task) |
|
613
|
|
|
|
|
614
|
|
|
project = task['project'] |
|
615
|
|
|
if old_task['status'] != self.taskdb.ACTIVE: |
|
616
|
|
|
self._cnt['5m'].event((project, 'pending'), +1) |
|
617
|
|
|
self._cnt['1h'].event((project, 'pending'), +1) |
|
618
|
|
|
self._cnt['1d'].event((project, 'pending'), +1) |
|
619
|
|
|
if old_task['status'] == self.taskdb.SUCCESS: |
|
620
|
|
|
self._cnt['all'].event((project, 'success'), -1).event((project, 'pending'), +1) |
|
621
|
|
|
elif old_task['status'] == self.taskdb.FAILED: |
|
622
|
|
|
self._cnt['all'].event((project, 'failed'), -1).event((project, 'pending'), +1) |
|
623
|
|
|
logger.info('restart task %(project)s:%(taskid)s %(url)s', task) |
|
624
|
|
|
return task |
|
625
|
|
|
|
|
626
|
|
|
def on_task_status(self, task): |
|
627
|
|
|
'''Called when a status pack is arrived''' |
|
628
|
|
|
try: |
|
629
|
|
|
procesok = task['track']['process']['ok'] |
|
630
|
|
|
if not self.task_queue[task['project']].done(task['taskid']): |
|
631
|
|
|
logging.error('not processing pack: %(project)s:%(taskid)s %(url)s', task) |
|
632
|
|
|
return None |
|
633
|
|
|
except KeyError as e: |
|
634
|
|
|
logger.error("Bad status pack: %s", e) |
|
635
|
|
|
return None |
|
636
|
|
|
|
|
637
|
|
|
if procesok: |
|
638
|
|
|
ret = self.on_task_done(task) |
|
639
|
|
|
else: |
|
640
|
|
|
ret = self.on_task_failed(task) |
|
641
|
|
|
|
|
642
|
|
|
if task['track']['fetch'].get('time'): |
|
643
|
|
|
self._cnt['5m_time'].event((task['project'], 'fetch_time'), |
|
644
|
|
|
task['track']['fetch']['time']) |
|
645
|
|
|
if task['track']['process'].get('time'): |
|
646
|
|
|
self._cnt['5m_time'].event((task['project'], 'process_time'), |
|
647
|
|
|
task['track']['process'].get('time')) |
|
648
|
|
|
self.projects[task['project']]['active_tasks'].appendleft((time.time(), task)) |
|
649
|
|
|
return ret |
|
650
|
|
|
|
|
651
|
|
|
def on_task_done(self, task): |
|
652
|
|
|
'''Called when a task is done and success, called by `on_task_status`''' |
|
653
|
|
|
task['status'] = self.taskdb.SUCCESS |
|
654
|
|
|
task['lastcrawltime'] = time.time() |
|
655
|
|
|
|
|
656
|
|
|
if 'schedule' in task: |
|
657
|
|
|
if task['schedule'].get('auto_recrawl') and 'age' in task['schedule']: |
|
658
|
|
|
task['status'] = self.taskdb.ACTIVE |
|
659
|
|
|
next_exetime = task['schedule'].get('age') |
|
660
|
|
|
task['schedule']['exetime'] = time.time() + next_exetime |
|
661
|
|
|
self.put_task(task) |
|
662
|
|
|
else: |
|
663
|
|
|
del task['schedule'] |
|
664
|
|
|
self.update_task(task) |
|
665
|
|
|
|
|
666
|
|
|
project = task['project'] |
|
667
|
|
|
self._cnt['5m'].event((project, 'success'), +1) |
|
668
|
|
|
self._cnt['1h'].event((project, 'success'), +1) |
|
669
|
|
|
self._cnt['1d'].event((project, 'success'), +1) |
|
670
|
|
|
self._cnt['all'].event((project, 'success'), +1).event((project, 'pending'), -1) |
|
671
|
|
|
logger.info('task done %(project)s:%(taskid)s %(url)s', task) |
|
672
|
|
|
return task |
|
673
|
|
|
|
|
674
|
|
|
def on_task_failed(self, task): |
|
675
|
|
|
'''Called when a task is failed, called by `on_task_status`''' |
|
676
|
|
|
|
|
677
|
|
|
if 'schedule' not in task: |
|
678
|
|
|
old_task = self.taskdb.get_task(task['project'], task['taskid'], fields=['schedule']) |
|
679
|
|
|
if old_task is None: |
|
680
|
|
|
logging.error('unknown status pack: %s' % task) |
|
681
|
|
|
return |
|
682
|
|
|
task['schedule'] = old_task.get('schedule', {}) |
|
683
|
|
|
|
|
684
|
|
|
retries = task['schedule'].get('retries', self.default_schedule['retries']) |
|
685
|
|
|
retried = task['schedule'].get('retried', 0) |
|
686
|
|
|
|
|
687
|
|
|
project_info = self.projects.get(task['project'], {}) |
|
688
|
|
|
retry_delay = project_info.get('retry_delay', self.DEFAULT_RETRY_DELAY) |
|
689
|
|
|
next_exetime = retry_delay.get(retried, retry_delay['']) |
|
690
|
|
|
|
|
691
|
|
|
if task['schedule'].get('auto_recrawl') and 'age' in task['schedule']: |
|
692
|
|
|
next_exetime = min(next_exetime, task['schedule'].get('age')) |
|
693
|
|
|
elif retried >= retries: |
|
694
|
|
|
next_exetime = -1 |
|
695
|
|
|
|
|
696
|
|
|
if next_exetime < 0: |
|
697
|
|
|
task['status'] = self.taskdb.FAILED |
|
698
|
|
|
task['lastcrawltime'] = time.time() |
|
699
|
|
|
self.update_task(task) |
|
700
|
|
|
|
|
701
|
|
|
project = task['project'] |
|
702
|
|
|
self._cnt['5m'].event((project, 'failed'), +1) |
|
703
|
|
|
self._cnt['1h'].event((project, 'failed'), +1) |
|
704
|
|
|
self._cnt['1d'].event((project, 'failed'), +1) |
|
705
|
|
|
self._cnt['all'].event((project, 'failed'), +1).event((project, 'pending'), -1) |
|
706
|
|
|
logger.info('task failed %(project)s:%(taskid)s %(url)s' % task) |
|
707
|
|
|
return task |
|
708
|
|
|
else: |
|
709
|
|
|
task['schedule']['retried'] = retried + 1 |
|
710
|
|
|
task['schedule']['exetime'] = time.time() + next_exetime |
|
711
|
|
|
task['lastcrawltime'] = time.time() |
|
712
|
|
|
self.update_task(task) |
|
713
|
|
|
self.put_task(task) |
|
714
|
|
|
|
|
715
|
|
|
project = task['project'] |
|
716
|
|
|
self._cnt['5m'].event((project, 'retry'), +1) |
|
717
|
|
|
self._cnt['1h'].event((project, 'retry'), +1) |
|
718
|
|
|
self._cnt['1d'].event((project, 'retry'), +1) |
|
719
|
|
|
# self._cnt['all'].event((project, 'retry'), +1) |
|
720
|
|
|
logger.info('task retry %d/%d %%(project)s:%%(taskid)s %%(url)s' % ( |
|
721
|
|
|
retried, retries), task) |
|
722
|
|
|
return task |
|
723
|
|
|
|
|
724
|
|
|
def on_select_task(self, task): |
|
725
|
|
|
'''Called when a task is selected to fetch & process''' |
|
726
|
|
|
# inject informations about project |
|
727
|
|
|
logger.info('select %(project)s:%(taskid)s %(url)s', task) |
|
728
|
|
|
|
|
729
|
|
|
project_info = self.projects.get(task['project']) |
|
730
|
|
|
assert project_info, 'no such project' |
|
731
|
|
|
task['group'] = project_info.get('group') |
|
732
|
|
|
task['project_md5sum'] = project_info.get('md5sum') |
|
733
|
|
|
task['project_updatetime'] = project_info.get('updatetime', 0) |
|
734
|
|
|
project_info['active_tasks'].appendleft((time.time(), task)) |
|
735
|
|
|
self.send_task(task) |
|
736
|
|
|
return task |
|
737
|
|
|
|
|
738
|
|
|
|
|
739
|
|
|
from tornado import gen |
|
740
|
|
|
|
|
741
|
|
|
|
|
742
|
|
|
class OneScheduler(Scheduler): |
|
743
|
|
|
""" |
|
744
|
|
|
Scheduler Mixin class for one mode |
|
745
|
|
|
|
|
746
|
|
|
overwirted send_task method |
|
747
|
|
|
call processor.on_task(fetcher.fetch(task)) instead of consuming queue |
|
748
|
|
|
""" |
|
749
|
|
|
|
|
750
|
|
|
def _check_select(self): |
|
751
|
|
|
""" |
|
752
|
|
|
interactive mode of select tasks |
|
753
|
|
|
""" |
|
754
|
|
|
if not self.interactive: |
|
755
|
|
|
return super(OneScheduler, self)._check_select() |
|
756
|
|
|
|
|
757
|
|
|
# waiting for running tasks |
|
758
|
|
|
if self.running_task > 0: |
|
759
|
|
|
return |
|
760
|
|
|
|
|
761
|
|
|
is_crawled = [] |
|
762
|
|
|
|
|
763
|
|
|
def run(project=None): |
|
764
|
|
|
return crawl('on_start', project=project) |
|
765
|
|
|
|
|
766
|
|
|
def crawl(url, project=None, **kwargs): |
|
767
|
|
|
""" |
|
768
|
|
|
Crawl given url, same parameters as BaseHandler.crawl |
|
769
|
|
|
|
|
770
|
|
|
url - url or taskid, parameters will be used if in taskdb |
|
771
|
|
|
project - can be ignored if only one project exists. |
|
772
|
|
|
""" |
|
773
|
|
|
|
|
774
|
|
|
# looking up the project instance |
|
775
|
|
|
if project is None: |
|
776
|
|
|
if len(self.projects) == 1: |
|
777
|
|
|
project = list(self.projects.keys())[0] |
|
778
|
|
|
else: |
|
779
|
|
|
raise LookupError('You need specify the project: %r' |
|
780
|
|
|
% list(self.projects.keys())) |
|
781
|
|
|
project_data = self.processor.project_manager.get(project) |
|
782
|
|
|
if not project_data: |
|
783
|
|
|
raise LookupError('no such project: %s' % project) |
|
784
|
|
|
|
|
785
|
|
|
# get task package |
|
786
|
|
|
instance = project_data['instance'] |
|
787
|
|
|
instance._reset() |
|
788
|
|
|
task = instance.crawl(url, **kwargs) |
|
789
|
|
|
if isinstance(task, list): |
|
790
|
|
|
raise Exception('url list is not allowed in interactive mode') |
|
791
|
|
|
|
|
792
|
|
|
# check task in taskdb |
|
793
|
|
|
if not kwargs: |
|
794
|
|
|
dbtask = self.taskdb.get_task(task['project'], task['taskid'], |
|
795
|
|
|
fields=self.request_task_fields) |
|
796
|
|
|
if not dbtask: |
|
797
|
|
|
dbtask = self.taskdb.get_task(task['project'], task['url'], |
|
798
|
|
|
fields=self.request_task_fields) |
|
799
|
|
|
if dbtask: |
|
800
|
|
|
task = dbtask |
|
801
|
|
|
|
|
802
|
|
|
# select the task |
|
803
|
|
|
self.on_select_task(task) |
|
804
|
|
|
is_crawled.append(True) |
|
805
|
|
|
|
|
806
|
|
|
shell.ask_exit() |
|
807
|
|
|
|
|
808
|
|
|
def quit_interactive(): |
|
809
|
|
|
'''Quit interactive mode''' |
|
810
|
|
|
is_crawled.append(True) |
|
811
|
|
|
self.interactive = False |
|
812
|
|
|
shell.ask_exit() |
|
813
|
|
|
|
|
814
|
|
|
def quit_pyspider(): |
|
815
|
|
|
'''Close pyspider''' |
|
816
|
|
|
is_crawled[:] = [] |
|
817
|
|
|
shell.ask_exit() |
|
818
|
|
|
|
|
819
|
|
|
shell = utils.get_python_console() |
|
820
|
|
|
shell.interact( |
|
821
|
|
|
'pyspider shell - Select task\n' |
|
822
|
|
|
'crawl(url, project=None, **kwargs) - same parameters as BaseHandler.crawl\n' |
|
823
|
|
|
'quit_interactive() - Quit interactive mode\n' |
|
824
|
|
|
'quit_pyspider() - Close pyspider' |
|
825
|
|
|
) |
|
826
|
|
|
if not is_crawled: |
|
827
|
|
|
self.ioloop.stop() |
|
828
|
|
|
|
|
829
|
|
|
def __getattr__(self, name): |
|
830
|
|
|
"""patch for crawl(url, callback=self.index_page) API""" |
|
831
|
|
|
if self.interactive: |
|
832
|
|
|
return name |
|
833
|
|
|
raise AttributeError(name) |
|
834
|
|
|
|
|
835
|
|
|
def on_task_status(self, task): |
|
836
|
|
|
"""Ignore not processing error in interactive mode""" |
|
837
|
|
|
if not self.interactive: |
|
838
|
|
|
super(OneScheduler, self).on_task_status(task) |
|
839
|
|
|
|
|
840
|
|
|
try: |
|
841
|
|
|
procesok = task['track']['process']['ok'] |
|
842
|
|
|
except KeyError as e: |
|
843
|
|
|
logger.error("Bad status pack: %s", e) |
|
844
|
|
|
return None |
|
845
|
|
|
|
|
846
|
|
|
if procesok: |
|
847
|
|
|
ret = self.on_task_done(task) |
|
848
|
|
|
else: |
|
849
|
|
|
ret = self.on_task_failed(task) |
|
850
|
|
|
if task['track']['fetch'].get('time'): |
|
851
|
|
|
self._cnt['5m_time'].event((task['project'], 'fetch_time'), |
|
852
|
|
|
task['track']['fetch']['time']) |
|
853
|
|
|
if task['track']['process'].get('time'): |
|
854
|
|
|
self._cnt['5m_time'].event((task['project'], 'process_time'), |
|
855
|
|
|
task['track']['process'].get('time')) |
|
856
|
|
|
self.projects[task['project']]['active_tasks'].appendleft((time.time(), task)) |
|
857
|
|
|
return ret |
|
858
|
|
|
|
|
859
|
|
|
def init_one(self, ioloop, fetcher, processor, |
|
860
|
|
|
result_worker=None, interactive=False): |
|
861
|
|
|
self.ioloop = ioloop |
|
862
|
|
|
self.fetcher = fetcher |
|
863
|
|
|
self.processor = processor |
|
864
|
|
|
self.result_worker = result_worker |
|
865
|
|
|
self.interactive = interactive |
|
866
|
|
|
self.running_task = 0 |
|
867
|
|
|
|
|
868
|
|
|
@gen.coroutine |
|
869
|
|
|
def do_task(self, task): |
|
870
|
|
|
self.running_task += 1 |
|
871
|
|
|
result = yield gen.Task(self.fetcher.fetch, task) |
|
872
|
|
|
type, task, response = result.args |
|
873
|
|
|
self.processor.on_task(task, response) |
|
874
|
|
|
# do with message |
|
875
|
|
|
while not self.processor.inqueue.empty(): |
|
876
|
|
|
_task, _response = self.processor.inqueue.get() |
|
877
|
|
|
self.processor.on_task(_task, _response) |
|
878
|
|
|
# do with results |
|
879
|
|
|
while not self.processor.result_queue.empty(): |
|
880
|
|
|
_task, _result = self.processor.result_queue.get() |
|
881
|
|
|
if self.result_worker: |
|
882
|
|
|
self.result_worker.on_result(_task, _result) |
|
883
|
|
|
self.running_task -= 1 |
|
884
|
|
|
|
|
885
|
|
|
def send_task(self, task, force=True): |
|
886
|
|
|
if self.fetcher.http_client.free_size() <= 0: |
|
887
|
|
|
if force: |
|
888
|
|
|
self._send_buffer.appendleft(task) |
|
889
|
|
|
else: |
|
890
|
|
|
raise self.outqueue.Full |
|
891
|
|
|
self.ioloop.add_future(self.do_task(task), lambda x: x.result()) |
|
892
|
|
|
|
|
893
|
|
|
def run(self): |
|
894
|
|
|
import tornado.ioloop |
|
895
|
|
|
tornado.ioloop.PeriodicCallback(self.run_once, 100, |
|
896
|
|
|
io_loop=self.ioloop).start() |
|
897
|
|
|
self.ioloop.start() |
|
898
|
|
|
|
|
899
|
|
|
def quit(self): |
|
900
|
|
|
self.ioloop.stop() |
|
901
|
|
|
logger.info("scheduler exiting...") |
|
902
|
|
|
|
binux /
pyspider
