private static OpenApiOperation?GetOperationForEndpoint(RouteEndpointBuilder routeEndpointBuilder)
{
var pattern = routeEndpointBuilder.RoutePattern;
var metadata = new EndpointMetadataCollection(routeEndpointBuilder.Metadata);
var methodInfo = metadata.OfType <MethodInfo>().SingleOrDefault();
var serviceProvider = routeEndpointBuilder.ServiceProvider;
if (methodInfo == null || serviceProvider == null)
{
return(null);
}
var hostEnvironment = serviceProvider.GetService <IHostEnvironment>();
var serviceProviderIsService = serviceProvider.GetService <IServiceProviderIsService>();
var generator = new OpenApiGenerator(hostEnvironment, serviceProviderIsService);
return(generator.GetOpenApiOperation(methodInfo, metadata, pattern));
}
private static void AddAndConfigureOperationForEndpoint(EndpointBuilder endpointBuilder, Func<OpenApiOperation, OpenApiOperation>? configure = null)
{
foreach (var item in endpointBuilder.Metadata)
{
if (item is OpenApiOperation existingOperation)
{
if (configure is not null)
{
var configuredOperation = configure(existingOperation);
if (!ReferenceEquals(configuredOperation, existingOperation))
{
endpointBuilder.Metadata.Remove(existingOperation);
// The only way configureOperation could be null here is if configureOperation violated it's signature and returned null.
// We could throw or something, removing the previous metadata seems fine.
if (configuredOperation is not null)
{
endpointBuilder.Metadata.Add(configuredOperation);
}
}
}
return;
}
}
// We cannot generate an OpenApiOperation without routeEndpointBuilder.RoutePattern.
if (endpointBuilder is not RouteEndpointBuilder routeEndpointBuilder)
{
return;
}
var pattern = routeEndpointBuilder.RoutePattern;
var metadata = new EndpointMetadataCollection(routeEndpointBuilder.Metadata);
var methodInfo = metadata.OfType<MethodInfo>().SingleOrDefault();
if (methodInfo is null)
{
return;
}
var applicationServices = routeEndpointBuilder.ApplicationServices;
var hostEnvironment = applicationServices.GetService<IHostEnvironment>();
var serviceProviderIsService = applicationServices.GetService<IServiceProviderIsService>();
var generator = new OpenApiGenerator(hostEnvironment, serviceProviderIsService);
var newOperation = generator.GetOpenApiOperation(methodInfo, metadata, pattern);
if (newOperation is not null)
{
if (configure is not null)
{
newOperation = configure(newOperation);
}
if (newOperation is not null)
{
routeEndpointBuilder.Metadata.Add(newOperation);
}
}
}