Question

我需要爬几个蜘蛛。我正在使用scrapyd和默认设置。我设法用scrapyd界面安排我的工作。这一切都很好，除了工作没有结束。每次我检查我发现16个（4个工作/ 4个cpus）工作正在运行而所有其他工作都在等待，除非我关闭scrapy。

我还检查了日志，并说：

2013-09-22 12:20:55+0000 [spider1] INFO: Dumping Scrapy stats:
    {
     'downloader/exception_count': 1,
     'downloader/exception_type_count/scrapy.exceptions.IgnoreRequest': 1,
     'downloader/request_bytes': 244,
     'downloader/request_count': 1,
     'downloader/request_method_count/GET': 1,
     'downloader/response_bytes': 7886,
     'downloader/response_count': 1,
     'downloader/response_status_count/200': 1,
     'finish_reason': 'finished',
     'finish_time': datetime.datetime(2013, 9, 22, 12, 20, 55, 635611),
     'log_count/DEBUG': 7,
     'log_count/INFO': 3,
     'request_depth_max': 1,
     'response_received_count': 1,
     'scheduler/dequeued': 2,
     'scheduler/dequeued/memory': 2,
     'scheduler/enqueued': 2,
     'scheduler/enqueued/memory': 2,
     'start_time': datetime.datetime(2013, 9, 22, 12, 20, 55, 270275)}
2013-09-22 12:20:55+0000 [spider1] INFO: Spider closed (finished)

你怎么用scrapyd刮掉数百只蜘蛛？

编辑：

scrapy.cfg：

[settings]
default = myproject.scrapers.settings

[deploy]
url = http://localhost:6800/
project = myproject
version = GIT

[scrapyd]
eggs_dir    = scrapy_dir/eggs
logs_dir    = scrapy_dir/logs
items_dir   = scrapy_dir/items
dbs_dir     = scrapy_dir/dbs

scrapy settings.py

import os
from django.conf import settings

PROJECT_ROOT = os.path.abspath(os.path.dirname(__file__))
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproject.settings")

BOT_NAME = 'scrapers'

SPIDER_MODULES = ['myproject.scrapers.spiders']

DOWNLOADER_MIDDLEWARES = {
    'myproject.scrapers.middlewares.IgnoreDownloaderMiddleware': 50,
}

ITEM_PIPELINES = [
    'myproject.scrapers.pipelines.CheckPipeline',
    'myproject.scrapers.pipelines.CleanPipeline',
    'myproject.contrib.pipeline.images.ImagesPipeline',
    'myproject.scrapers.pipelines.SerializePipeline',
    'myproject.scrapers.pipelines.StatsCollectionPipeline',
]    

DOWNLOAD_DELAY = 0.25

path_to_phatomjs = '/home/user/workspace/phantomjs-1.9.1-linux-x86_64/bin/phantomjs'

IMAGES_STORE = settings.MEDIA_ROOT + '/' + settings.IMAGES_STORE
IMAGES_THUMBS = {
    'small': (70, 70),
    'big': (270, 270),
}

Answer 1

我一发现问题的根源就试图在昨天发布这个答案，但我的帐户出了问题。

问题来自PhantomJs驱动程序，它阻止了scrapyd完成工作。

起初我用删除功能退出驱动程序：

def __del__(self):
    self.driver.quit()
    ...

现在我创建了一个函数quit_driver，并将其挂钩到spider_closed信号。

@classmethod
def from_crawler(cls, crawler):
    temp = cls(crawler.stats)
    crawler.signals.connect(temp.quit_driver, signal=signals.spider_closed)
    return temp

Scrapyd工作没有完成

1 个答案: