nojhan/weboob-devel
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introduce ModuleLoadError

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This commit is contained in:
Christophe Benz 2010-11-17 15:05:53 +01:00
commit f0c3e6029a
4 changed files with 46 additions and 21 deletions
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27
weboob/core/modules.py
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@ -23,9 +23,19 @@ import re
from weboob.capabilities.base import IBaseCap
from weboob.tools.backend import BaseBackend
from weboob.tools.log import getLogger
from weboob.tools.misc import get_backtrace
__all__ = ['Module', 'ModulesLoader']
__all__ = ['Module', 'ModulesLoader', 'ModuleLoadError']
class ModuleLoadError(Exception):
def __init__(self, module_name, original_backtrace):
Exception.__init__(self, u'Unable to load module "%s"' % module_name)
self.original_backtrace = original_backtrace
def __str__(self):
return '%s\n%s' % (Exception.__str__(self), self.original_backtrace)
class Module(object):
@ -98,9 +108,9 @@ class ModulesLoader(object):
self.loaded = {}
self.logger = getLogger('modules')
def get_or_load_module(self, module_name, quiet=False):
def get_or_load_module(self, module_name):
if module_name not in self.loaded:
self.load_module(module_name, quiet)
self.load_module(module_name)
if module_name in self.loaded:
return self.loaded[module_name]
else:
@ -122,19 +132,12 @@ class ModulesLoader(object):
for existing_module_name in self.iter_existing_module_names():
self.load_module(existing_module_name)
def load_module(self, module_name, quiet=False):
def load_module(self, module_name):
try:
package_name = 'weboob.backends.%s' % module_name
module = Module(__import__(package_name, fromlist=[str(package_name)]))
except ImportError, e:
msg = u'Unable to load module "%s": %s' % (module_name, e)
if logging.root.level == logging.DEBUG:
self.logger.exception(msg)
return
else:
if not quiet:
self.logger.error(msg)
return
raise ModuleLoadError(module_name, get_backtrace())
if module.name in self.loaded:
self.logger.debug('Module "%s" is already loaded from %s' % (module_name, module.package.__path__[0]))
return