in stk-sample/lambda/stk-player-events-loader-mysql/package/google/protobuf/json_format.py [0:0]
def _ConvertFieldValuePair(self, js, message):
"""Convert field value pairs into regular message.
Args:
js: A JSON object to convert the field value pairs.
message: A regular protocol message to record the data.
Raises:
ParseError: In case of problems converting.
"""
names = []
message_descriptor = message.DESCRIPTOR
fields_by_json_name = dict((f.json_name, f)
for f in message_descriptor.fields)
for name in js:
try:
field = fields_by_json_name.get(name, None)
if not field:
field = message_descriptor.fields_by_name.get(name, None)
if not field and _VALID_EXTENSION_NAME.match(name):
if not message_descriptor.is_extendable:
raise ParseError('Message type {0} does not have extensions'.format(
message_descriptor.full_name))
identifier = name[1:-1] # strip [] brackets
# pylint: disable=protected-access
field = message.Extensions._FindExtensionByName(identifier)
# pylint: enable=protected-access
if not field:
# Try looking for extension by the message type name, dropping the
# field name following the final . separator in full_name.
identifier = '.'.join(identifier.split('.')[:-1])
# pylint: disable=protected-access
field = message.Extensions._FindExtensionByName(identifier)
# pylint: enable=protected-access
if not field:
if self.ignore_unknown_fields:
continue
raise ParseError(
('Message type "{0}" has no field named "{1}".\n'
' Available Fields(except extensions): {2}').format(
message_descriptor.full_name, name,
[f.json_name for f in message_descriptor.fields]))
if name in names:
raise ParseError('Message type "{0}" should not have multiple '
'"{1}" fields.'.format(
message.DESCRIPTOR.full_name, name))
names.append(name)
# Check no other oneof field is parsed.
if field.containing_oneof is not None:
oneof_name = field.containing_oneof.name
if oneof_name in names:
raise ParseError('Message type "{0}" should not have multiple '
'"{1}" oneof fields.'.format(
message.DESCRIPTOR.full_name, oneof_name))
names.append(oneof_name)
value = js[name]
if value is None:
if (field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE
and field.message_type.full_name == 'google.protobuf.Value'):
sub_message = getattr(message, field.name)
sub_message.null_value = 0
else:
message.ClearField(field.name)
continue
# Parse field value.
if _IsMapEntry(field):
message.ClearField(field.name)
self._ConvertMapFieldValue(value, message, field)
elif field.label == descriptor.FieldDescriptor.LABEL_REPEATED:
message.ClearField(field.name)
if not isinstance(value, list):
raise ParseError('repeated field {0} must be in [] which is '
'{1}.'.format(name, value))
if field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
# Repeated message field.
for item in value:
sub_message = getattr(message, field.name).add()
# None is a null_value in Value.
if (item is None and
sub_message.DESCRIPTOR.full_name != 'google.protobuf.Value'):
raise ParseError('null is not allowed to be used as an element'
' in a repeated field.')
self.ConvertMessage(item, sub_message)
else:
# Repeated scalar field.
for item in value:
if item is None:
raise ParseError('null is not allowed to be used as an element'
' in a repeated field.')
getattr(message, field.name).append(
_ConvertScalarFieldValue(item, field))
elif field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
if field.is_extension:
sub_message = message.Extensions[field]
else:
sub_message = getattr(message, field.name)
sub_message.SetInParent()
self.ConvertMessage(value, sub_message)
else:
if field.is_extension:
message.Extensions[field] = _ConvertScalarFieldValue(value, field)
else:
setattr(message, field.name, _ConvertScalarFieldValue(value, field))
except ParseError as e:
if field and field.containing_oneof is None:
raise ParseError('Failed to parse {0} field: {1}.'.format(name, e))
else:
raise ParseError(str(e))
except ValueError as e:
raise ParseError('Failed to parse {0} field: {1}.'.format(name, e))
except TypeError as e:
raise ParseError('Failed to parse {0} field: {1}.'.format(name, e))