Python google.protobuf.descriptor.FieldDescriptor.TYPE_MESSAGE Examples

The following are 30 code examples of google.protobuf.descriptor.FieldDescriptor.TYPE_MESSAGE(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module google.protobuf.descriptor.FieldDescriptor , or try the search function .
Example #1
Source File: pbjson.py    From futuquant with Apache License 2.0 6 votes vote down vote up 
def pb2dict(obj):
    """
    Takes a ProtoBuf Message obj and convertes it to a dict.
    """
    adict = {}
    if not obj.IsInitialized():
        return None
    for field in obj.DESCRIPTOR.fields:
        if not getattr(obj, field.name):
            continue
        if not field.label == FD.LABEL_REPEATED:
            if not field.type == FD.TYPE_MESSAGE:
                adict[field.name] = getattr(obj, field.name)
            else:
                value = pb2dict(getattr(obj, field.name))
                if value:
                    adict[field.name] = value
        else:
            if field.type == FD.TYPE_MESSAGE:
                adict[field.name] = \
                    [pb2dict(v) for v in getattr(obj, field.name)]
            else:
                adict[field.name] = [v for v in getattr(obj, field.name)]
    return adict
Example #2
Source File: format.py    From sea with MIT License 6 votes vote down vote up 
def _get_field_value_adaptor(pb, field, use_enum_labels,
                             including_default_value_fields):
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        # recursively encode protobuf sub-message
        return lambda pb: msg2dict(
            pb, use_enum_labels=use_enum_labels,
            including_default_value_fields=including_default_value_fields)

    if use_enum_labels and field.type == FieldDescriptor.TYPE_ENUM:
        return lambda value: enum_label_name(field, value)

    if field.type in TYPE_CALLABLE_MAP:
        return TYPE_CALLABLE_MAP[field.type]

    raise TypeError("Field %s.%s has unrecognised type id %d" % (
        pb.__class__.__name__, field.name, field.type))
Example #3
Source File: protobuf_json.py    From stanza-old with Apache License 2.0 6 votes vote down vote up 
def pb2json(pb, useFieldNumber=False):
    ''' convert google.protobuf.descriptor instance to JSON string '''
    js = {}
    # fields = pb.DESCRIPTOR.fields #all fields
    fields = pb.ListFields()        #only filled (including extensions)
    for field,value in fields:
        if useFieldNumber:
            key = field.number
        else:
            key = field.name
        if field.type == FD.TYPE_MESSAGE:
            ftype = partial(pb2json, useFieldNumber=useFieldNumber)
        elif field.type in _ftype2js:
            ftype = _ftype2js[field.type]
        else:
            raise ParseError("Field %s.%s of type '%d' is not supported" % (pb.__class__.__name__, field.name, field.type, ))
        if field.label == FD.LABEL_REPEATED:
            js_value = []
            for v in value:
                js_value.append(ftype(v))
        else:
            js_value = ftype(value)
        js[key] = js_value
    return js
Example #4
Source File: proto2yang.py    From voltha with Apache License 2.0 6 votes vote down vote up 
def traverse_field_options(fields, prefix):
    field_options = []
    for field in fields:
        assert isinstance(field, FieldDescriptorProto)
        full_name = prefix + '-' + field.name
        option = None
        if field.type == FieldDescriptor.TYPE_MESSAGE and field.label != \
                FieldDescriptor.LABEL_REPEATED:
            if field.options:
                for fd, val in field.options.ListFields():
                    if fd.full_name == 'voltha.yang_inline_node':
                        field_options.append(
                            {'name': full_name,
                             'option': fd.full_name,
                             'proto_name': val.id,
                             'proto_type': val.type
                             }
                        )
        return field_options
Example #5
Source File: pblite.py    From hangups with MIT License 6 votes vote down vote up 
def _decode_repeated_field(message, field, value_list):
    """Decode repeated field."""
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        for value in value_list:
            decode(getattr(message, field.name).add(), value)
    else:
        try:
            for value in value_list:
                if field.type == FieldDescriptor.TYPE_BYTES:
                    value = base64.b64decode(value)
                getattr(message, field.name).append(value)
        except (ValueError, TypeError) as e:
            # ValueError: invalid enum value, negative unsigned int value, or
            # invalid base64
            # TypeError: mismatched type
            logger.warning('Message %r ignoring repeated field %s: %s',
                           message.__class__.__name__, field.name, e)
            # Ignore any values already decoded by clearing list
            message.ClearField(field.name)
Example #6
Source File: protobuf.py    From mentor with Apache License 2.0 6 votes vote down vote up 
def protobuf_to_dict(pb, containers=CONTAINER_MAP, converters=TYPE_CALLABLE_MAP):
    result = message_to_container(pb, containers)

    # for field, value in pb.ListFields():  # only non-empty fields
    for field in pb.DESCRIPTOR.fields:  # empty fields too
        value = getattr(pb, field.name)
        if (field.message_type and field.message_type.has_options and
                field.message_type.GetOptions().map_entry):
            converter = dict
        elif field.type == FieldDescriptor.TYPE_MESSAGE:
            # recursively encode protobuf sub-message
            converter = partial(protobuf_to_dict, containers=containers,
                                converters=converters)
        elif field.type == FieldDescriptor.TYPE_ENUM:
            converter = partial(enum_to_label, field)
        else:
            converter = converters[field.type]

        if field.label == FieldDescriptor.LABEL_REPEATED:
            converter = partial(map, converter)

        result[field.name] = converter(value)

    return result
Example #7
Source File: protobuf_json.py    From gtfs_realtime_json with MIT License 6 votes vote down vote up 
def json2pb(pb, js):
	''' convert JSON string to google.protobuf.descriptor instance '''
	for field in pb.DESCRIPTOR.fields:
		if field.name not in js:
			continue
		if field.type == FD.TYPE_MESSAGE:
			pass
		elif field.type in _js2ftype:
			ftype = _js2ftype[field.type]
		else: 
			raise ParseError("Field %s.%s of type '%d' is not supported" % (pb.__class__.__name__, field.name, field.type, ))
		value = js[field.name]
		if field.label == FD.LABEL_REPEATED:
			pb_value = getattr(pb, field.name, None)
			for v in value:
				if field.type == FD.TYPE_MESSAGE:
					json2pb(pb_value.add(), v)
				else:
					pb_value.append(ftype(v))
		else:
			if field.type == FD.TYPE_MESSAGE:
				json2pb(getattr(pb, field.name, None), value)
			else:
				setattr(pb, field.name, ftype(value))
	return pb
Example #8
Source File: protobuf_json.py    From gtfs_realtime_json with MIT License 6 votes vote down vote up 
def pb2json(pb):
	''' convert google.protobuf.descriptor instance to JSON string '''
	js = {}
	# fields = pb.DESCRIPTOR.fields #all fields
	fields = pb.ListFields()	#only filled (including extensions)
	for field,value in fields:
		if field.type == FD.TYPE_MESSAGE:
			ftype = pb2json
		elif field.type in _ftype2js:
			ftype = _ftype2js[field.type]
		else:
			raise ParseError("Field %s.%s of type '%d' is not supported" % (pb.__class__.__name__, field.name, field.type, ))
		if field.label == FD.LABEL_REPEATED:
			js_value = []
			for v in value:
				js_value.append(ftype(v))
		else:
			js_value = ftype(value)
		js[field.name] = js_value
	return js
Example #9
Source File: pbjson.py    From py-futu-api with Apache License 2.0 6 votes vote down vote up 
def pb2dict(obj):
    """
    Takes a ProtoBuf Message obj and convertes it to a dict.
    """
    adict = {}
    if not obj.IsInitialized():
        return None
    for field in obj.DESCRIPTOR.fields:
        if not getattr(obj, field.name):
            continue
        if not field.label == FD.LABEL_REPEATED:
            if not field.type == FD.TYPE_MESSAGE:
                adict[field.name] = getattr(obj, field.name)
            else:
                value = pb2dict(getattr(obj, field.name))
                if value:
                    adict[field.name] = value
        else:
            if field.type == FD.TYPE_MESSAGE:
                adict[field.name] = \
                    [pb2dict(v) for v in getattr(obj, field.name)]
            else:
                adict[field.name] = [v for v in getattr(obj, field.name)]
    return adict
Example #10
Source File: protobuf_json.py    From stanza-old with Apache License 2.0 5 votes vote down vote up 
def json2pb(pb, js, useFieldNumber=False):
    ''' convert JSON string to google.protobuf.descriptor instance '''
    for field in pb.DESCRIPTOR.fields:
        if useFieldNumber:
            key = field.number
        else:
            key = field.name
        if key not in js:
            continue
        if field.type == FD.TYPE_MESSAGE:
            pass
        elif field.type in _js2ftype:
            ftype = _js2ftype[field.type]
        else:
            raise ParseError("Field %s.%s of type '%d' is not supported" % (pb.__class__.__name__, field.name, field.type, ))
        value = js[key]
        if field.label == FD.LABEL_REPEATED:
            pb_value = getattr(pb, field.name, None)
            for v in value:
                if field.type == FD.TYPE_MESSAGE:
                    json2pb(pb_value.add(), v, useFieldNumber=useFieldNumber)
                else:
                    pb_value.append(ftype(v))
        else:
            if field.type == FD.TYPE_MESSAGE:
                json2pb(getattr(pb, field.name, None), value, useFieldNumber=useFieldNumber)
            else:
                setattr(pb, field.name, ftype(value))
    return pb
Example #11
Source File: well_known_types.py    From keras-lambda with MIT License 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name[name]
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #12
Source File: protobuf.py    From mentor with Apache License 2.0 5 votes vote down vote up 
def dict_to_protobuf(dct, pb=None, containers=CONTAINER_MAP,
                     converters=REVERSE_TYPE_CALLABLE_MAP, strict=True):
    default = container_to_message(dct, containers)
    if pb:
        if default:
            pb.MergeFrom(default)
    else:
        pb = default
    pb = pb if isinstance(pb, Message) else pb()

    for k, v in dct.items():
        try:
            # TODO silently skip undifened fields
            field = pb.DESCRIPTOR.fields_by_name[k]
        except:
            if not strict:
                continue
            else:
                raise
        pb_value = getattr(pb, k, None)
        if field.label == FieldDescriptor.LABEL_REPEATED:
            for item in v:
                if field.type == FieldDescriptor.TYPE_MESSAGE:
                    dict_to_protobuf(item, pb_value.add(),
                                     containers, converters)
                elif field.type == FieldDescriptor.TYPE_ENUM:
                    pb_value.append(label_to_enum(field, item))
                else:
                    pb_value.append(item)
        elif field.type == FieldDescriptor.TYPE_MESSAGE:
            dict_to_protobuf(v, pb_value, containers, converters)
        else:
            if field.type in converters:
                v = converters[field.type](v)
            elif field.type == FieldDescriptor.TYPE_ENUM:
                v = label_to_enum(field, v)

            setattr(pb, field.name, v)

    return pb
Example #13
Source File: protobuf_to_dict.py    From pogom with MIT License 5 votes vote down vote up 
def _get_field_value_adaptor(pb, field, type_callable_map=TYPE_CALLABLE_MAP, use_enum_labels=False):
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        # recursively encode protobuf sub-message
        return lambda pb: protobuf_to_dict(
            pb, type_callable_map=type_callable_map,
            use_enum_labels=use_enum_labels)

    if use_enum_labels and field.type == FieldDescriptor.TYPE_ENUM:
        return lambda value: enum_label_name(field, value)

    if field.type in type_callable_map:
        return type_callable_map[field.type]

    raise TypeError("Field %s.%s has unrecognised type id %d" % (
        pb.__class__.__name__, field.name, field.type))
Example #14
Source File: protobuf_to_dict.py    From pogom with MIT License 5 votes vote down vote up 
def _dict_to_protobuf(pb, value, type_callable_map, strict):
    fields = _get_field_mapping(pb, value, strict)

    for field, input_value, pb_value in fields:
        if field.label == FieldDescriptor.LABEL_REPEATED:
            if field.message_type and field.message_type.has_options and field.message_type.GetOptions().map_entry:
                pb_value.update(input_value)
                continue
            for item in input_value:
                if field.type == FieldDescriptor.TYPE_MESSAGE:
                    m = pb_value.add()
                    _dict_to_protobuf(m, item, type_callable_map, strict)
                elif field.type == FieldDescriptor.TYPE_ENUM and isinstance(item, six.string_types):
                    pb_value.append(_string_to_enum(field, item))
                else:
                    pb_value.append(item)
            continue
        if field.type == FieldDescriptor.TYPE_MESSAGE:
            _dict_to_protobuf(pb_value, input_value, type_callable_map, strict)
            continue

        if field.type in type_callable_map:
            input_value = type_callable_map[field.type](input_value)

        if field.is_extension:
            pb.Extensions[field] = input_value
            continue

        if field.type == FieldDescriptor.TYPE_ENUM and isinstance(input_value, six.string_types):
            input_value = _string_to_enum(field, input_value)

        setattr(pb, field.name, input_value)

    return pb
Example #15
Source File: protobuf_to_dict.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def _get_field_value_adaptor(pb, field, type_callable_map=TYPE_CALLABLE_MAP, use_enum_labels=False):
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        # recursively encode protobuf sub-message
        return lambda pb: protobuf_to_dict(
            pb, type_callable_map=type_callable_map,
            use_enum_labels=use_enum_labels)

    if use_enum_labels and field.type == FieldDescriptor.TYPE_ENUM:
        return lambda value: enum_label_name(field, value)

    if field.type in type_callable_map:
        return type_callable_map[field.type]

    raise TypeError("Field %s.%s has unrecognised type id %d" % (
        pb.__class__.__name__, field.name, field.type))
Example #16
Source File: protobuf_to_dict.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def _dict_to_protobuf(pb, value, type_callable_map, strict):
    fields = _get_field_mapping(pb, value, strict)

    for field, input_value, pb_value in fields:
        if field.label == FieldDescriptor.LABEL_REPEATED:
            if field.message_type and field.message_type.has_options and field.message_type.GetOptions().map_entry:
                pb_value.update(input_value)
                continue
            for item in input_value:
                if field.type == FieldDescriptor.TYPE_MESSAGE:
                    m = pb_value.add()
                    _dict_to_protobuf(m, item, type_callable_map, strict)
                elif field.type == FieldDescriptor.TYPE_ENUM and isinstance(item, six.string_types):
                    pb_value.append(_string_to_enum(field, item))
                else:
                    pb_value.append(item)
            continue
        if field.type == FieldDescriptor.TYPE_MESSAGE:
            _dict_to_protobuf(pb_value, input_value, type_callable_map, strict)
            continue

        if field.type in type_callable_map:
            input_value = type_callable_map[field.type](input_value)

        if field.is_extension:
            pb.Extensions[field] = input_value
            continue

        if field.type == FieldDescriptor.TYPE_ENUM and isinstance(input_value, six.string_types):
            input_value = _string_to_enum(field, input_value)

        setattr(pb, field.name, input_value)

    return pb
Example #17
Source File: pblite.py    From hangups with MIT License 5 votes vote down vote up 
def _decode_field(message, field, value):
    """Decode optional or required field."""
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        decode(getattr(message, field.name), value)
    else:
        try:
            if field.type == FieldDescriptor.TYPE_BYTES:
                value = base64.b64decode(value)
            setattr(message, field.name, value)
        except (ValueError, TypeError) as e:
            # ValueError: invalid enum value, negative unsigned int value, or
            # invalid base64
            # TypeError: mismatched type
            logger.warning('Message %r ignoring field %s: %s',
                           message.__class__.__name__, field.name, e)
Example #18
Source File: well_known_types.py    From Serverless-Deep-Learning-with-TensorFlow-and-AWS-Lambda with MIT License 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name[name]
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #19
Source File: well_known_types.py    From Serverless-Deep-Learning-with-TensorFlow-and-AWS-Lambda with MIT License 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #20
Source File: protobuf_json.py    From idasec with GNU Lesser General Public License v2.1 5 votes vote down vote up 
def json2pb(pb, js):
    """ convert JSON string to google.protobuf.descriptor instance
    :param pb: protobuf class to fill
    :param js: json input data
    """
    for field in pb.DESCRIPTOR.fields:
        if field.name not in js:
            continue
        if field.type == FD.TYPE_MESSAGE:
            pass
        elif field.type in _js2ftype:
            ftype = _js2ftype[field.type]
        else:
            raise ParseError(
                "Field %s.%s of type '%d' is not supported" % (pb.__class__.__name__, field.name, field.type,))
        value = js[field.name]
        if field.label == FD.LABEL_REPEATED:
            pb_value = getattr(pb, field.name, None)
            for v in value:
                if field.type == FD.TYPE_MESSAGE:
                    json2pb(pb_value.add(), v)
                else:
                    pb_value.append(ftype(v))
        else:
            if field.type == FD.TYPE_MESSAGE:
                json2pb(getattr(pb, field.name, None), value)
            elif field.type == FD.TYPE_ENUM:
                real_value = field.enum_type.values_by_name[value].number
                setattr(pb, field.name, real_value)
            else:
                setattr(pb, field.name, ftype(value))
    return pb
Example #21
Source File: well_known_types.py    From luci-py with Apache License 2.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #22
Source File: well_known_types.py    From luci-py with Apache License 2.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #23
Source File: well_known_types.py    From luci-py with Apache License 2.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #24
Source File: well_known_types.py    From luci-py with Apache License 2.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #25
Source File: well_known_types.py    From luci-py with Apache License 2.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name.get(name)
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #26
Source File: well_known_types.py    From go2mapillary with GNU General Public License v3.0 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name[name]
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #27
Source File: well_known_types.py    From coremltools with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name[name]
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name
Example #28
Source File: protobuf_to_dict.py    From perceptron-benchmark with Apache License 2.0 5 votes vote down vote up 
def _dict_to_protobuf(pb, value, type_callable_map, strict):
    """ dict to protobuf

    Args:
        pb: data in dict format

    Returns:
        pb: data in proto format
    """

    fields = _get_field_mapping(pb, value, strict)

    for field, input_value, pb_value in fields:
        if field.label == FieldDescriptor.LABEL_REPEATED:
            for item in input_value:
                if field.type == FieldDescriptor.TYPE_MESSAGE:
                    m = pb_value.add()
                    _dict_to_protobuf(m, item, type_callable_map, strict)
                elif field.type == FieldDescriptor.TYPE_ENUM and isinstance(item, basestring):
                    pb_value.append(_string_to_enum(field, item))
                else:
                    pb_value.append(item)
            continue
        if field.type == FieldDescriptor.TYPE_MESSAGE:
            _dict_to_protobuf(pb_value, input_value, type_callable_map, strict)
            continue

        if field.type in type_callable_map:
            input_value = type_callable_map[field.type](input_value)

        if field.is_extension:
            pb.Extensions[field] = input_value
            continue

        if field.type == FieldDescriptor.TYPE_ENUM and isinstance(input_value, basestring):
            input_value = _string_to_enum(field, input_value)

        setattr(pb, field.name, input_value)

    return pb
Example #29
Source File: protobuf_to_dict.py    From perceptron-benchmark with Apache License 2.0 5 votes vote down vote up 
def _get_field_value_adaptor(pb, field, type_callable_map=TYPE_CALLABLE_MAP, use_enum_labels=False):
    if field.type == FieldDescriptor.TYPE_MESSAGE:
        # recursively encode protobuf sub-message
        return lambda pb: protobuf_to_dict(pb, type_callable_map, use_enum_labels)

    if use_enum_labels and field.type == FieldDescriptor.TYPE_ENUM:
        return lambda value: enum_label_name(field, value)

    if field.type in type_callable_map:
        return type_callable_map[field.type]

    raise TypeError("Field %s.%s has unrecognised type id %d" % (
        pb.__class__.__name__, field.name, field.type))
Example #30
Source File: well_known_types.py    From auto-alt-text-lambda-api with MIT License 5 votes vote down vote up 
def _IsValidPath(message_descriptor, path):
  """Checks whether the path is valid for Message Descriptor."""
  parts = path.split('.')
  last = parts.pop()
  for name in parts:
    field = message_descriptor.fields_by_name[name]
    if (field is None or
        field.label == FieldDescriptor.LABEL_REPEATED or
        field.type != FieldDescriptor.TYPE_MESSAGE):
      return False
    message_descriptor = field.message_type
  return last in message_descriptor.fields_by_name