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services.py
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services.py
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'''
Created on 2015-4-9
@author: SmokeAngle0421
'''
from twisted.application import internet,service
from spiderApp.spiders.startPageSpider import startPageSpider
from spiderApp.spiders.listPageSpider import listPageSpider
from scrapy.utils.project import get_project_settings
from scrapy.crawler import Crawler
from scrapy import signals
from utils import log
from appCrawler import appCrawler
settings = get_project_settings()
class spiderService(service.MultiService):
def __init__(self, taskId, taskService):
service.MultiService.__init__(self)
self.taskId = taskId
self.taskService = taskService
_startPageSpiderService = startPageSpiderService(self)
_startPageSpiderService.setName('startPageSpiderService_%s' % taskId)
_listPageSpiderService = listPageSpiderService(self)
_listPageSpiderService.setName('listPageSpiderService_%s' % taskId)
self.addService(_startPageSpiderService)
self.addService(_listPageSpiderService)
self._startPageSpiderService = _startPageSpiderService
self._listPageSpiderService = _listPageSpiderService
def startService(self):
service.MultiService.startService(self)
log.msg(format='start spiderService serviceName=(%(serviceName)s)',serviceName=self.name)
self._startPageSpiderService._crawler.signals.connect(self._listPageSpiderService.startCrawl, 'writeListQuque')
self._startPageSpiderService._crawler.signals.connect(self._listPageSpiderService.pausedCrawl, 'emptyListQuque')
self._listPageSpiderService._crawler.signals.connect(self._listPageSpiderService.pausedCrawl, 'emptyListQuque')
def removeSpiderService(self):
_running = 0
for serviceName in self.namedServices:
if self.namedServices[serviceName].running == 1:
_running = 1
break
if _running == 0 :
log.msg(format='spiderService->removeSpiderService stop spiderService serviceName=(%(serviceName)s)',serviceName=self.name)
if self.name in self.taskService.namedServices:
self.taskService.removeService(self)
def stopService(self):
log.msg(format='spiderService->stopService stop spiderService serviceName=(%(serviceName)s)',serviceName=self.name)
service.MultiService.stopService(self)
self.removeSpiderService()
class startPageSpiderService(service.Service):
def __init__(self, parent):
self.spiderService = parent
self._crawler = Crawler(settings)
self._crawler.configure()
self._spider = startPageSpider(taskId=self.spiderService.taskId)
def getStats(self):
return self._crawler.stats.get_stats()
def startService(self):
service.Service.startService(self)
#dispatcher.connect(self.stopService, signals.spider_closed)
self._crawler.signals.connect(self.stopService, signals.spider_closed)
# self._crawler.signals.connect(self.test2, 'writeListQuque')
#_startPageSpider = startPageSpider(taskId=self.spiderService.taskId)
self._crawler.crawl(self._spider)
#self._crawler.start()
self.startCrawl()
def startCrawl(self):
if not self._crawler.engine.running:
self._crawler.start()
# def test2(self):
# print '================>111111111111111111111111<=========================='
def stopService(self):
log.msg(format='startPageSpiderService->stopService stop startPageSpiderService serviceName=(%(serviceName)s)',serviceName=self.name)
service.Service.stopService(self)
self.spiderService.removeSpiderService()
self._crawler.stop()
if self.name in self.spiderService.namedServices:
self.spiderService.removeService(self)
class listPageSpiderService(service.Service):
def __init__(self, parent):
self.spiderService = parent
self._crawler = Crawler(settings)
self._crawler.configure()
self._spider = listPageSpider(taskId=self.spiderService.taskId)
def getStats(self):
return self._crawler.stats.get_stats()
def startService(self):
service.Service.startService(self)
self._crawler.signals.connect(self.stopService, signals.spider_closed)
#_listPageSpider = listPageSpider(taskId=self.spiderService.taskId)
# self._crawler.start()
def startCrawl(self):
print '------------->listPageSpiderService->startCrawl'
if self._crawler._spider is None:
self._crawler.crawl(self._spider)
else:
print '>>>>>>>>>>>>>>>>>>>>>',self._crawler._spider
if not self._crawler.engine.running:
print '>>>>>>>>>>>>>>>>>>>>> _crawler.engine.running'
self._crawler.start()
else:
if self._crawler.engine.paused :
print '>>>>>>>>>>>>>>>>>>>>> _crawler.engine.unpause'
if self._crawler._spider is not None:
print '>>>>>>>>>>>>>>>>>>>>> _crawler._spider.start_requests()'
self._crawler._spider.start_requests()
self._crawler.engine.unpause()
def pausedCrawl(self):
print 'listPageSpiderService->pausedCrawl'
if self._crawler._spider is not None:
if not self.spiderService._startPageSpiderService._crawler.engine.running:
print '------------------->_crawler.stop()'
self._crawler.stop()
else:
if not self._crawler.engine.paused :
self._crawler.engine.pause()
#if self._crawler.engine.running :
#if not self._crawler.engine.paused :
#print '?????????????????????????', 'pausedCrawl'
#self._crawler.engine.pause()
def stopService(self):
log.msg(format='listPageSpiderService->stopService stop listPageSpiderService serviceName=(%(serviceName)s)',serviceName=self.name)
service.Service.stopService(self)
self.spiderService.removeSpiderService()
self._crawler._spider.stopSpider()
self._crawler.stop()
if self.name in self.spiderService.namedServices:
self.spiderService.removeService(self)
class TaskService(service.MultiService):
def __init__(self):
service.MultiService.__init__(self)
def startTask(self, taskId):
serviceName = 'spiderService_%s' % taskId
if serviceName not in self.namedServices:
_spiderService = spiderService(taskId=taskId, taskService=self)
_spiderService.setName('spiderService_%s' % taskId)
self.addService(_spiderService)
log.msg(format='TaskService->startTask(%(taskId)s)',taskId=taskId)
return True
else:
log.msg(format='TaskService->startTask(%(taskId)s) serviceName=%(serviceName)s Exists',taskId=taskId, serviceName=serviceName)
return False
def stopTask(self,taskId):
serviceName = 'spiderService_%s' % taskId
log.msg(format='TaskService->stopTask(%(taskId)s) serviceName=%(serviceName)s ',taskId=taskId, serviceName=serviceName)
if serviceName in self.namedServices:
self.namedServices[serviceName].stopService()
return True
def stateTask(self, taskId):
serviceName = 'spiderService_%s' % taskId
result = {}
if serviceName in self.namedServices:
for _spiderService in self.namedServices[serviceName].namedServices:
result[_spiderService] = self.namedServices[serviceName].namedServices[_spiderService].getStats()
return result
def startService(self):
service.Service.startService(self)
log.msg('TaskService->startService')