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pluggable sub-commands for scrapy comand-line

This commit is contained in:
Jordi Llonch 2013-03-06 05:25:38 +11:00
parent 19d0942c74
commit d9261f6c54
1 changed files with 12 additions and 0 deletions
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12
scrapy/cmdline.py
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@ -2,6 +2,7 @@ import sys
import optparse
import cProfile
import inspect
import pkg_resources
import scrapy
from scrapy.crawler import CrawlerProcess
@ -30,8 +31,19 @@ def _get_commands_from_module(module, inproject):
d[cmdname] = cmd()
return d
def _get_commands_from_entry_points(inproject, group='scrapy.commands'):
cmds = {}
for entry_point in pkg_resources.iter_entry_points(group):
obj = entry_point.load()
if inspect.isclass(obj):
cmds[entry_point.name] = obj()
else:
raise Exception("Invalid entry point %s" % entry_point.name)
return cmds
def _get_commands_dict(settings, inproject):
cmds = _get_commands_from_module('scrapy.commands', inproject)
cmds.update(_get_commands_from_entry_points(inproject))
cmds_module = settings['COMMANDS_MODULE']
if cmds_module:
cmds.update(_get_commands_from_module(cmds_module, inproject))