private protected ServerMethodInvokerBase(
Method <TRequest, TResponse> method,
MethodOptions options,
IGrpcServiceActivator <TService> serviceActivator)
{
Method = method;
Options = options;
ServiceActivator = serviceActivator;
}
public DuplexStreamingServerMethodInvoker(
DuplexStreamingServerMethod <TService, TRequest, TResponse> invoker,
Method <TRequest, TResponse> method,
MethodOptions options,
IGrpcServiceActivator <TService> serviceActivator)
: base(method, options, serviceActivator)
{
_invoker = invoker;
if (Options.HasInterceptors)
{
var interceptorPipeline = new InterceptorPipelineBuilder <TRequest, TResponse>(Options.Interceptors);
_pipelineInvoker = interceptorPipeline.DuplexStreamingPipeline(ResolvedInterceptorInvoker);
}
}
private void AddMethodCore <TRequest, TResponse>(
Method <TRequest, TResponse> method,
HttpRule httpRule,
string pattern,
string httpVerb,
string body,
string responseBody,
MethodDescriptor methodDescriptor)
where TRequest : class
where TResponse : class
{
try
{
if (!pattern.StartsWith('/'))
{
// This validation is consistent with grpc-gateway code generation.
// We should match their validation to be a good member of the eco-system.
throw new InvalidOperationException($"Path template must start with /: {pattern}");
}
var(invoker, metadata) = CreateModelCore <UnaryServerMethod <TService, TRequest, TResponse> >(
method.Name,
new[] { typeof(TRequest), typeof(ServerCallContext) },
httpVerb,
httpRule,
methodDescriptor);
var methodContext = MethodOptions.Create(new[] { _globalOptions, _serviceOptions });
var routePattern = RoutePatternFactory.Parse(pattern);
var routeParameterDescriptors =
ServiceDescriptorHelpers.ResolveRouteParameterDescriptors(routePattern, methodDescriptor.InputType);
ServiceDescriptorHelpers.ResolveBodyDescriptor(body, methodDescriptor, out var bodyDescriptor,
out var bodyFieldDescriptors, out var bodyDescriptorRepeated);
FieldDescriptor?responseBodyDescriptor = null;
if (!string.IsNullOrEmpty(responseBody))
{
responseBodyDescriptor = methodDescriptor.OutputType.FindFieldByName(responseBody);
if (responseBodyDescriptor == null)
{
throw new InvalidOperationException(
$"Couldn't find matching field for response body '{responseBody}' on {methodDescriptor.OutputType.Name}.");
}
}
var unaryInvoker =
new UnaryServerMethodInvoker <TService, TRequest, TResponse>(invoker, method, methodContext,
_serviceActivator);
var unaryServerCallHandler = new UnaryServerCallHandler <TService, TRequest, TResponse>(
unaryInvoker,
responseBodyDescriptor,
bodyDescriptor,
bodyDescriptorRepeated,
bodyFieldDescriptors,
routeParameterDescriptors);
_context.AddMethod(method, routePattern, metadata, unaryServerCallHandler.HandleCallAsync);
}
catch (Exception ex)
{
throw new InvalidOperationException(
$"Error binding {method.Name} on {typeof(TService).Name} to HTTP API.", ex);
}
}