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Code Releases Wiki Activity

added SETTINGS_DISABLED environment variable to turn off custom settings (and only use Scrapy defaults)

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--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40814
This commit is contained in:
Pablo Hoffman 2009-01-30 23:18:23 +00:00
parent 16efbf87fc
commit 005a642240
1 changed files with 12 additions and 9 deletions
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21
scrapy/trunk/scrapy/conf/__init__.py
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@ -2,6 +2,7 @@ import os
import cPickle as pickle import cPickle as pickle
SETTINGS_MODULE = os.environ.get('SCRAPYSETTINGS_MODULE', 'scrapy_settings') SETTINGS_MODULE = os.environ.get('SCRAPYSETTINGS_MODULE', 'scrapy_settings')
SETTINGS_DISABLED = os.environ.get('SCRAPY_SETTINGS_DISABLED', False)
class Settings(object): class Settings(object):
"""Class to obtain configuration values from settings module """Class to obtain configuration values from settings module
@ -16,7 +17,8 @@ class Settings(object):
def __init__(self): def __init__(self):
pickled_settings = os.environ.get("SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE") pickled_settings = os.environ.get("SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE")
self.overrides = pickle.loads(pickled_settings) if pickled_settings else {} self.overrides = pickle.loads(pickled_settings) if pickled_settings else {}
self.settings = self._import(SETTINGS_MODULE) if not SETTINGS_DISABLED:
self.settings = self._import(SETTINGS_MODULE)
self.defaults = {} self.defaults = {}
self.global_defaults = self._import('scrapy.conf.default_settings') self.global_defaults = self._import('scrapy.conf.default_settings')
@ -24,17 +26,18 @@ class Settings(object):
return __import__(modulepath, {}, {}, ['']) return __import__(modulepath, {}, {}, [''])
def __getitem__(self, opt_name): def __getitem__(self, opt_name):
if opt_name in self.overrides: if not SETTINGS_DISABLED:
return self.overrides[opt_name] if opt_name in self.overrides:
return self.overrides[opt_name]
if 'SCRAPY_' + opt_name in os.environ: if 'SCRAPY_' + opt_name in os.environ:
return os.environ['SCRAPY_' + opt_name] return os.environ['SCRAPY_' + opt_name]
if hasattr(self.settings, opt_name): if hasattr(self.settings, opt_name):
return getattr(self.settings, opt_name) return getattr(self.settings, opt_name)
if opt_name in self.defaults: if opt_name in self.defaults:
return self.defaults[opt_name] return self.defaults[opt_name]
if hasattr(self.global_defaults, opt_name): if hasattr(self.global_defaults, opt_name):
return getattr(self.global_defaults, opt_name) return getattr(self.global_defaults, opt_name)