mirror of https://github.com/scrapy/scrapy.git
42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
import zope.interface
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class ISpiderLoader(zope.interface.Interface):
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def from_settings(settings):
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"""Return an instance of the class for the given settings"""
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def load(spider_name):
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"""Return the Spider class for the given spider name. If the spider
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name is not found, it must raise a KeyError."""
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def list():
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"""Return a list with the names of all spiders available in the
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project"""
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def find_by_request(request):
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"""Return the list of spiders names that can handle the given request"""
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# ISpiderManager is deprecated, don't use it!
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# An alias is kept for backwards compatibility.
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ISpiderManager = ISpiderLoader
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class IAddon(zope.interface.Interface):
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"""Scrapy add-on"""
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name = zope.interface.Attribute("""Add-on name""")
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version = zope.interface.Attribute("""Add-on version string (PEP440)""")
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# XXX: Can methods be declared optional? I.e., can I enforce the signature
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# but not the existence of a method?
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#def update_addons(config, addons):
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# """Enables and configures other add-ons"""
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#def update_settings(config, settings):
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# """Modifies `settings` to enable and configure required components"""
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#def check_configuration(config, crawler):
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# """Performs post-initialization checks on fully configured `crawler`"""
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