def check(self, *errorTypes):
"""Check if this failure's type is in a predetermined list.
@type errorTypes: list of L{Exception} classes or
fully-qualified class names.
@returns: the matching L{Exception} type, or None if no match.
"""
for error in errorTypes:
err = error
if inspect.isclass(error) and issubclass(error, Exception):
err = reflect.qual(error)
if err in self.parents:
return error
return None
def check(self, *errorTypes):
"""Check if this failure's type is in a predetermined list.
@type errorTypes: list of L{Exception} classes or
fully-qualified class names.
@returns: the matching L{Exception} type, or None if no match.
"""
for error in errorTypes:
err = error
if inspect.isclass(error) and issubclass(error, Exception):
err = reflect.qual(error)
if err in self.parents:
return error
return None
def printTraceback(self,
file=None,
elideFrameworkCode=False,
detail='default'):
"""
Emulate Python's standard error reporting mechanism.
@param file: If specified, a file-like object to which to write the
traceback.
@param elideFrameworkCode: A flag indicating whether to attempt to
remove uninteresting frames from within Twisted itself from the
output.
@param detail: A string indicating how much information to include
in the traceback. Must be one of C{'brief'}, C{'default'}, or
C{'verbose'}.
"""
if file is None:
from twisted.python import log
file = log.logerr
w = file.write
if detail == 'verbose' and not self.captureVars:
# We don't have any locals or globals, so rather than show them as
# empty make the output explicitly say that we don't have them at
# all.
formatDetail = 'verbose-vars-not-captured'
else:
formatDetail = detail
# Preamble
if detail == 'verbose':
w('*--- Failure #%d%s---\n' %
(self.count, (self.pickled and ' (pickled) ') or ' '))
elif detail == 'brief':
if self.frames:
hasFrames = 'Traceback'
else:
hasFrames = 'Traceback (failure with no frames)'
w("%s: %s: %s\n" % (hasFrames, reflect.safe_str(
self.type), reflect.safe_str(self.value)))
else:
w('Traceback (most recent call last):\n')
# Frames, formatted in appropriate style
if self.frames:
if not elideFrameworkCode:
format_frames(self.stack[-traceupLength:], w, formatDetail)
w("%s\n" % (EXCEPTION_CAUGHT_HERE, ))
format_frames(self.frames, w, formatDetail)
elif not detail == 'brief':
# Yeah, it's not really a traceback, despite looking like one...
w("Failure: ")
# postamble, if any
if not detail == 'brief':
w("%s: %s\n" %
(reflect.qual(self.type), reflect.safe_str(self.value)))
# chaining
if isinstance(self.value, Failure):
# TODO: indentation for chained failures?
file.write(" (chained Failure)\n")
self.value.printTraceback(file, elideFrameworkCode, detail)
if detail == 'verbose':
w('*--- End of Failure #%d ---\n' % self.count)
def printTraceback(self, file=None, elideFrameworkCode=False, detail='default'):
"""
Emulate Python's standard error reporting mechanism.
@param file: If specified, a file-like object to which to write the
traceback.
@param elideFrameworkCode: A flag indicating whether to attempt to
remove uninteresting frames from within Twisted itself from the
output.
@param detail: A string indicating how much information to include
in the traceback. Must be one of C{'brief'}, C{'default'}, or
C{'verbose'}.
"""
if file is None:
from twisted.python import log
file = log.logerr
w = file.write
if detail == 'verbose' and not self.captureVars:
# We don't have any locals or globals, so rather than show them as
# empty make the output explicitly say that we don't have them at
# all.
formatDetail = 'verbose-vars-not-captured'
else:
formatDetail = detail
# Preamble
if detail == 'verbose':
w( '*--- Failure #%d%s---\n' %
(self.count,
(self.pickled and ' (pickled) ') or ' '))
elif detail == 'brief':
if self.frames:
hasFrames = 'Traceback'
else:
hasFrames = 'Traceback (failure with no frames)'
w("%s: %s: %s\n" % (
hasFrames,
reflect.safe_str(self.type),
reflect.safe_str(self.value)))
else:
w( 'Traceback (most recent call last):\n')
# Frames, formatted in appropriate style
if self.frames:
if not elideFrameworkCode:
format_frames(self.stack[-traceupLength:], w, formatDetail)
w("%s\n" % (EXCEPTION_CAUGHT_HERE,))
format_frames(self.frames, w, formatDetail)
elif not detail == 'brief':
# Yeah, it's not really a traceback, despite looking like one...
w("Failure: ")
# postamble, if any
if not detail == 'brief':
w("%s: %s\n" % (reflect.qual(self.type),
reflect.safe_str(self.value)))
# chaining
if isinstance(self.value, Failure):
# TODO: indentation for chained failures?
file.write(" (chained Failure)\n")
self.value.printTraceback(file, elideFrameworkCode, detail)
if detail == 'verbose':
w('*--- End of Failure #%d ---\n' % self.count)