static IEnumerable <Type> GetMessageTypes <TMessage>()
{
if (TypeMetadataCache <TMessage> .IsValidMessageType)
{
yield return(typeof(TMessage));
}
foreach (var baseInterface in GetImplementedInterfaces(typeof(TMessage)))
{
yield return(baseInterface);
}
var baseType = typeof(TMessage).GetTypeInfo().BaseType;
while (baseType != null && TypeMetadataCache.IsValidMessageType(baseType))
{
yield return(baseType);
foreach (var baseInterface in GetImplementedInterfaces(baseType))
{
yield return(baseInterface);
}
baseType = baseType.GetTypeInfo().BaseType;
}
}
public IEnumerable <IMessageInterfaceType> GetMessageTypes()
{
var typeInfo = typeof(T).GetTypeInfo();
if (typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() == typeof(IJobConsumer <>))
{
var interfaceType = new JobInterfaceType(typeof(T).GetGenericArguments()[0], typeof(T));
if (TypeMetadataCache.IsValidMessageType(interfaceType.MessageType))
{
yield return(interfaceType);
}
}
IEnumerable <IMessageInterfaceType> types = typeof(T).GetInterfaces()
.Where(x => x.GetTypeInfo().IsGenericType)
.Where(x => x.GetGenericTypeDefinition() == typeof(IJobConsumer <>))
.Select(x => new JobInterfaceType(x.GetGenericArguments()[0], typeof(T)))
.Where(x => TypeMetadataCache.IsValidMessageType(x.MessageType))
.Where(x => !x.MessageType.ClosesType(typeof(Batch <>)));
foreach (var type in types)
{
yield return(type);
}
}
public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializerOptions options)
{
var typeInfo = typeToConvert.GetTypeInfo();
if (_converterFactory.TryGetValue(typeInfo, out Func <JsonConverter> converterFactory))
{
return(converterFactory());
}
if (typeInfo.IsGenericType && !typeInfo.IsGenericTypeDefinition)
{
var interfaceType = typeInfo.GetGenericTypeDefinition();
if (_openTypeFactory.TryGetValue(interfaceType, out var concreteType))
{
Type[] arguments = typeInfo.GetGenericArguments();
if (arguments.Length == 1 && !arguments[0].IsGenericParameter)
{
interfaceType = interfaceType.MakeGenericType(arguments[0]);
concreteType = concreteType.MakeGenericType(arguments[0]);
return((JsonConverter)Activator.CreateInstance(typeof(TypeMappingJsonConverter <,>).MakeGenericType(interfaceType, concreteType)));
}
}
}
if (typeToConvert.IsInterfaceOrConcreteClass() && TypeMetadataCache.IsValidMessageType(typeToConvert) && !typeToConvert.IsValueTypeOrObject())
{
return((JsonConverter)Activator.CreateInstance(
typeof(InterfaceJsonConverter <,>).MakeGenericType(typeToConvert, TypeMetadataCache.GetImplementationType(typeToConvert))));
}
throw new MassTransitException($"Unsupported type for json serialization {TypeMetadataCache.GetShortName(typeInfo)}");
}
public override bool CanConvert(Type typeToConvert)
{
var typeInfo = typeToConvert.GetTypeInfo();
if (!typeInfo.IsInterface)
{
return(false);
}
if (_converterFactory.TryGetValue(typeInfo, out Func <JsonConverter> _))
{
return(true);
}
if (_openTypeFactory.TryGetValue(typeInfo, out _))
{
return(true);
}
if (typeToConvert.IsInterfaceOrConcreteClass() && TypeMetadataCache.IsValidMessageType(typeToConvert) && !typeToConvert.IsValueTypeOrObject())
{
return(true);
}
return(false);
}
protected override IConverter ValueFactory(Type objectType)
{
if (objectType.GetTypeInfo().IsInterface&& TypeMetadataCache.IsValidMessageType(objectType))
{
return((IConverter)Activator.CreateInstance(typeof(CachedConverter <>).MakeGenericType(objectType)));
}
return(new Unsupported());
}
public Task <ISendEndpoint> GetPublishSendEndpoint(Type messageType)
{
if (!TypeMetadataCache.IsValidMessageType(messageType))
{
throw new MessageException(messageType, "Anonymous types are not valid message types");
}
var address = _nameFormatter.GetTopicAddress(_host, messageType);
return(_sendEndpointProvider.GetSendEndpoint(address));
}
public async Task <ISendEndpoint> GetPublishSendEndpoint(Type messageType)
{
if (!TypeMetadataCache.IsValidMessageType(messageType))
{
throw new MessageException(messageType, "Anonymous types are not valid message types");
}
ISendEndpoint[] result = await Task.WhenAll(_host.TransportAddresses.Select(x => _sendEndpointProvider.GetSendEndpoint(x)))
.ConfigureAwait(false);
return(new FanoutSendEndpoint(result));
}
static IMessageFactory CreateMessageFactory(Type contractType)
{
if (!TypeMetadataCache.IsValidMessageType(contractType))
{
throw new ArgumentException(nameof(contractType));
}
Type[] parameterTypes = new Type[0];
if (contractType.GetConstructor(parameterTypes) == null)
{
throw new ArgumentException("No default constructor available for message type", nameof(contractType));
}
return((IMessageFactory)Activator.CreateInstance(typeof(DynamicMessageFactory <>).MakeGenericType(contractType)));
}
public bool TryGetMessage <T>(out ConsumeContext <T> message)
where T : class
{
lock (_messageTypes)
{
object existing;
if (_messageTypes.TryGetValue(typeof(T), out existing))
{
message = existing as ConsumeContext <T>;
return(message != null);
}
if (typeof(T) == typeof(JToken))
{
_messageTypes[typeof(T)] = message = new MessageConsumeContext <T>(this, _messageToken as T);
return(true);
}
string typeUrn = new MessageUrn(typeof(T)).ToString();
if (_supportedTypes.Any(typeUrn.Equals))
{
object obj;
Type deserializeType = typeof(T);
if (deserializeType.IsInterface && TypeMetadataCache.IsValidMessageType(deserializeType))
{
deserializeType = TypeMetadataCache.GetImplementationType(deserializeType);
}
using (JsonReader jsonReader = _messageToken.CreateReader())
{
obj = _deserializer.Deserialize(jsonReader, deserializeType);
}
_messageTypes[typeof(T)] = message = new MessageConsumeContext <T>(this, (T)obj);
return(true);
}
_messageTypes[typeof(T)] = message = null;
return(false);
}
}
Task <ISendEndpoint> CreateSendEndpoint(Type messageType)
{
if (!TypeMetadataCache.IsValidMessageType(messageType))
{
throw new MessageException(messageType, "Anonymous types are not valid message types");
}
var sendSettings = _host.Settings.GetSendSettings(messageType);
ExchangeBindingSettings[] bindings = TypeMetadataCache.GetMessageTypes(messageType)
.SelectMany(type => type.GetExchangeBindings(_host.Settings.MessageNameFormatter))
.Where(binding => !sendSettings.ExchangeName.Equals(binding.Exchange.ExchangeName))
.ToArray();
var destinationAddress = _host.Settings.GetSendAddress(sendSettings);
var modelCache = new RabbitMqModelCache(_host.ConnectionCache, _host.Supervisor, _modelSettings);
var sendTransport = new RabbitMqSendTransport(modelCache, sendSettings, bindings);
return(Task.FromResult <ISendEndpoint>(new SendEndpoint(sendTransport, _serializer, destinationAddress, _sourceAddress, SendPipe.Empty)));
}
public override bool CanConvert(Type objectType)
{
return(objectType.GetTypeInfo().IsInterface&& TypeMetadataCache.IsValidMessageType(objectType));
}
