public OrleansHttpGatewayMiddleware(RequestDelegate next, IGrainFactory grainFactory,
IOptions <OrleansHttpGatewayOptions> config)
{
if (grainFactory == null)
{
throw new ArgumentNullException(nameof(grainFactory));
}
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
this._next = next;
_grainTypeProvider =
new CachedGrainTypeProvider(
new CompositeGrainTypeProvider(
config.Value.Assemblies.Select(x => new AssemblyBasedGrainTypeProvider(x))
));
_serializer = JsonSerializer.Create(config.Value.JsonSerializerSettings);
_grainReferenceProvider = new ExpressionBasedGrainReferenceProvider(grainFactory);
_grainInvoker = new DynamicGrainMethodInvoker(
new IParameterBinder[]
{
new JsonBodyParameterBinder(_serializer), //order is important here, we expect application/json requests
new NamedQueryStringParameterBinder(_serializer),
});
}