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69 lines
2.4 KiB
Markdown
69 lines
2.4 KiB
Markdown
scrapyd
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=======
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[Scrapy][1] is an open source and collaborative framework for extracting the
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data you need from websites. In a fast, simple, yet extensible way.
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[Scrapyd][2] is a service for running Scrapy spiders. It allows you to deploy
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your Scrapy projects and control their spiders using a HTTP JSON API.
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[Scrapyd-client][3] is a client for scrapyd. It provides the scrapyd-deploy
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utility which allows you to deploy your project to a Scrapyd server.
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[ScrapyJS][4] provides Scrapy+JavaScript integration using Splash.
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This image is based on `debian:jessie` without any useless packages installed.
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Only 4 latest python packages are installed:
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- `scrapy`: git+https://github.com/scrapy/scrapy.git
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- `scrapyd`: git+https://github.com/scrapy/scrapyd.git
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- `scrapyd-client`: git+https://github.com/scrapy/scrapyd-client.git
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- `scrapyjs`: git+https://github.com/scrapinghub/scrapy-splash.git
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Please use this image as base for your own project.
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## Run it as background-daemon for scrapyd
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```
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$ docker run -d --restart always --name scrapyd -p 6800:6800 vimagick/scrapyd
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$ firefox http://localhost:6800
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```
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## Run it as interactive-shell for scrapy
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```
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$ cat > stackoverflow_spider.py << _EOF_
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import scrapy
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class StackOverflowSpider(scrapy.Spider):
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name = 'stackoverflow'
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start_urls = ['http://stackoverflow.com/questions?sort=votes']
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def parse(self, response):
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for href in response.css('.question-summary h3 a::attr(href)'):
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full_url = response.urljoin(href.extract())
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yield scrapy.Request(full_url, callback=self.parse_question)
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def parse_question(self, response):
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yield {
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'title': response.css('h1 a::text').extract()[0],
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'votes': response.css('.question .vote-count-post::text').extract()[0],
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'body': response.css('.question .post-text').extract()[0],
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'tags': response.css('.question .post-tag::text').extract(),
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'link': response.url,
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}
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_EOF_
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$ docker run -it --rm -v `pwd`:/code -w /code vimagick/scrapyd bash
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>>> scrapy runspider stackoverflow_spider.py -o top-stackoverflow-questions.json
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>>> cat top-stackoverflow-questions.json
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>>> exit
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```
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[1]: https://github.com/scrapy/scrapy
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[2]: https://github.com/scrapy/scrapyd
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[3]: https://github.com/scrapy/scrapyd-client
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[4]: https://github.com/scrapinghub/scrapy-splash
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