stop spider using CloseSipder exception

[Radu Marginean]

Hi,

In Scrapy 0.14, raising CloseSpider exception should shutdown the
spider.I am trying to raise CloseSpider from my items pipeline. It
works fine when the exception is thrown from the init method but does
not work when raised from the spider_opened method. Why is that?

Many thanks.
Radu

[Rolando Espinoza La Fuente]

CloseSpider exception is only supported in the spider callbacks.

Raising it from a pipeline's __init__ method does not make
sense as the pipelines are instantiated before any spider is opened.

To close an spider for any part of your code you should use
`engine.close_spider`
method. See this extension for an usage example:
https://github.com/scrapy/scrapy/blob/master/scrapy/contrib/closespider.py#L61

~Rolando

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