def EndMapping(self, top_value, mapping): """When leaving scope, makes sure new object is initialized. This method is mainly for picking up on any missing required attributes. Args: top_value: Parent of closing mapping object. mapping: _ObjectMapper instance that is leaving scope. """ # make sure that mapping.value is a non-built-in type (i.e. can have # 'CheckInitialized' called on it) if not hasattr(mapping.value, 'CheckInitialized'): raise validation.ValidationError( 'Cannot convert map to non-map value.') try: mapping.value.CheckInitialized() except validation.ValidationError: # These should just pass through. raise except Exception, e: # Some errors may have problematic encoding or other issues. # Re-raising an error in this block would be very hard to debug # for the time being so instead, on error, the value is merely # obscured. try: error_str = str(e) except Exception: error_str = '<unknown>' # Wrap in a ValidationError raise validation.ValidationError(error_str, e)
def _ValidateNotIpV4Address(host): """Validate host is not an IPV4 address.""" matcher = _URL_IP_V4_ADDR_RE.match(host) if matcher and sum(1 for x in matcher.groups() if int(x) <= 255) == 4: raise validation.ValidationError('Host may not match an ipv4 address \'%s\'' % host) return matcher
def Validate(self, value, key=None): """Validates a timezone.""" if value is None: # optional return if not isinstance(value, basestring): raise TypeError('timezone must be a string, not \'%r\'' % type(value)) if pytz is None: # pytz not installed, silently accept anything without validating return value try: pytz.timezone(value) except pytz.UnknownTimeZoneError: raise validation.ValidationError('timezone \'%s\' is unknown' % value) except IOError: # When running under dev_appserver, pytz can't open it's resource files. # I have no idea how to test this. return value except: # The yaml and validation code repeatedly re-raise exceptions that # consume tracebacks. unused_e, v, t = sys.exc_info() logging.warning('pytz raised an unexpected error: %s.\n' % (v) + 'Traceback:\n' + '\n'.join(traceback.format_tb(t))) raise return value
def Validate(self, value, key=None): """Validates a schedule.""" if value is None: raise validation.MissingAttribute('schedule must be specified') if not isinstance(value, basestring): raise TypeError('schedule must be a string, not \'%r\'' % type(value)) try: groctimespecification.GrocTimeSpecification(value) except groc.GrocException, e: raise validation.ValidationError( 'schedule \'%s\' failed to parse: %s' % (value, e.args[0]))
def Validate(self, value, unused_key=None): """Validates a subnet.""" if value is None: raise validation.MissingAttribute('subnet must be specified') if not isinstance(value, basestring): raise validation.ValidationError( 'subnet must be a string, not \'%r\'' % type(value)) try: ipaddr.IPNetwork(value) except ValueError: raise validation.ValidationError( '%s is not a valid IPv4 or IPv6 subnet' % value) # Extra validation check since ipaddr accepts quad-dotted subnet masks. parts = value.split('/') if len(parts) == 2 and not re.match('^[0-9]+$', parts[1]): raise validation.ValidationError( 'Prefix length of subnet %s must be an ' 'integer (quad-dotted masks are not ' 'supported)' % value) return value
def Validate(self, value, unused_key=None): """Validates an URL pattern.""" if value is None: raise validation.MissingAttribute('url must be specified') if not isinstance(value, basestring): raise validation.ValidationError('url must be a string, not \'%r\'' % type(value)) url_holder = ParsedURL(value) if url_holder.host_exact: _ValidateMatch(_URL_HOST_EXACT_PATTERN_RE, url_holder.host, 'invalid host_pattern \'%s\'' % url_holder.host) # Explicitly disallow IpV4 #.#.#.# addresses. These will match # _URL_HOST_EXACT_PATTERN_RE above. _ValidateNotIpV4Address(url_holder.host) else: _ValidateMatch(_URL_HOST_SUFFIX_PATTERN_RE, url_holder.host_pattern, 'invalid host_pattern \'%s\'' % url_holder.host_pattern) #TODO(user): validate path_pattern and lengths of both patterns. # also validate hostname label lengths 63 charn max) return value
raise e except Exception, e: try: error_str = str(e) except Exception: error_str = '<unknown>' try: value_str = str(value) except Exception: value_str = '<unknown>' # Raise a more generic exception message. message = ("Unable to assign value '%s' to attribute '%s':\n%s" % (value_str, key, error_str)) raise validation.ValidationError(message, e) def AppendTo(self, subject, value): """Append a value to a sequence. Args: subject: _ObjectSequence that is receiving new value. value: Value that is being appended to sequence. """ if isinstance(value, _ObjectMapper): # Construct a new instance of the list. value.set_value(subject.constructor()) subject.value.append(value.value) else: # Append value to list. subject.value.append(value)
def _ValidateMatch(regex, value, message): """Validate value matches regex.""" matcher = regex.match(value) if not matcher: raise validation.ValidationError(message) return matcher