void IRegisterEventDeserializers.Register(Type scope, string type, int version,
Func <JObject, IReadOnlyMetadata, IEnumerable <Event> > deserializer, CreatePreprocessor preprocessor)
{
preprocessor = preprocessor ?? DefaultPreprocessor;
IEnumerable <Event> Deserialize(string scopeIdentity, byte[] data, IReadOnlyMetadata metadata)
{
if (!preprocessor(scopeIdentity)(data, out var processed))
{
return(EmptyEventArray);
}
var json = ReadJson(processed);
return(deserializer(json, metadata));
}
if (!_eventDeserializers.TryGetValue(scope, out var deserializers))
{
deserializers =
new Dictionary
<TypeAndVersion, Func <string, byte[], IReadOnlyMetadata, IEnumerable <Event> > >();
_eventDeserializers[scope] = deserializers;
}
var tv = new TypeAndVersion(type, version);
if (deserializers.ContainsKey(tv))
{
throw new InvalidOperationException(
$"Deserializer already registered for {type} with {version} in scope {(scope == typeof(object) ? "(global)" : scope.FullName)}");
}
deserializers.Add(tv, Deserialize);
}
public T Deserialize(string messageData, IMetaData metaData)
{
var typeAndVersion = new TypeAndVersion(metaData.MessageType, metaData.MessageTypeVersion);
if (!_configuration.ContainsKey(typeAndVersion))
{
throw new InvalidOperationException("Invalid version");
}
return((T)JsonConvert.DeserializeObject(messageData, _configuration[typeAndVersion]));
}
