public override bool CanConvert(Type typeToConvert)
{
if (!typeof(IMessage).IsAssignableFrom(typeToConvert))
{
return(false);
}
var descriptor = JsonConverterHelper.GetMessageDescriptor(typeToConvert);
if (descriptor == null)
{
return(false);
}
return(JsonConverterHelper.IsWrapperType(descriptor));
}
public override void Write(Utf8JsonWriter writer, TMessage value, JsonSerializerOptions options)
{
var typeUrl = (string)value.Descriptor.Fields[Any.TypeUrlFieldNumber].Accessor.GetValue(value);
var data = (ByteString)value.Descriptor.Fields[Any.ValueFieldNumber].Accessor.GetValue(value);
var typeName = Any.GetTypeName(typeUrl);
var descriptor = _settings.TypeRegistry.Find(typeName);
if (descriptor == null)
{
throw new InvalidOperationException($"Type registry has no descriptor for type name '{typeName}'");
}
var valueMessage = descriptor.Parser.ParseFrom(data);
writer.WriteStartObject();
writer.WriteString(AnyTypeUrlField, typeUrl);
if (JsonConverterHelper.IsWellKnownType(descriptor))
{
writer.WritePropertyName(AnyWellKnownTypeValueField);
if (JsonConverterHelper.IsWrapperType(descriptor))
{
var wrappedValue = valueMessage.Descriptor.Fields[JsonConverterHelper.WrapperValueFieldNumber].Accessor.GetValue(valueMessage);
JsonSerializer.Serialize(writer, wrappedValue, wrappedValue.GetType(), options);
}
else
{
JsonSerializer.Serialize(writer, valueMessage, valueMessage.GetType(), options);
}
}
else
{
MessageConverter <Any> .WriteMessageFields(writer, valueMessage, _settings, options);
}
writer.WriteEndObject();
}
