/// <summary>
/// Maps methods from <c>ServerServiceDefinition</c> to server call handlers.
/// </summary>
internal static ReadOnlyDictionary <string, IServerCallHandler> GetCallHandlers(this ServerServiceDefinition serviceDefinition)
{
var binder = new DefaultServiceBinder();
serviceDefinition.BindService(binder);
return(binder.GetCallHandlers());
}
internal static IReadOnlyList <ServiceDescriptor> GetDescriptors(this ServerServiceDefinition serviceDefinition)
{
var binder = new DefaultServiceBinder();
serviceDefinition.BindService(binder);
return(binder.GetDescriptors());
}
private static IEnumerable <string> GetServiceDescriptorIdentities(ServerServiceDefinition serviceDefinition)
{
var binder = new DescriptorOnlyServiceBinder();
serviceDefinition.BindService(binder);
return(binder.GetDescriptors()
.Select(service => service.File.GetIdentity()));
}
/// <summary>
/// Returns a <see cref="Grpc.Core.ServerServiceDefinition" /> instance that
/// intercepts incoming calls to the underlying service handler through the given interceptor.
/// </summary>
/// <param name="serverServiceDefinition">The <see cref="Grpc.Core.ServerServiceDefinition" /> instance to register interceptors on.</param>
/// <param name="interceptor">The interceptor to intercept the incoming invocations with.</param>
/// <remarks>
/// Multiple interceptors can be added on top of each other by calling
/// "serverServiceDefinition.Intercept(a, b, c)". The order of invocation will be "a", "b", and then "c".
/// Interceptors can be later added to an existing intercepted service definition, effectively
/// building a chain like "serverServiceDefinition.Intercept(c).Intercept(b).Intercept(a)". Note that
/// in this case, the last interceptor added will be the first to take control.
/// </remarks>
public static ServerServiceDefinition Intercept(this ServerServiceDefinition serverServiceDefinition, Interceptor interceptor)
{
GrpcPreconditions.CheckNotNull(serverServiceDefinition, nameof(serverServiceDefinition));
GrpcPreconditions.CheckNotNull(interceptor, nameof(interceptor));
var binder = new InterceptingServiceBinder(interceptor);
serverServiceDefinition.BindService(binder);
return(binder.GetInterceptedServerServiceDefinition());
}