/// <summary>
/// <para>add MagicOnion service to generic host with specific types or assemblies</para>
/// </summary>
/// <remarks>you must not pass null to options</remarks>
public static IHostBuilder UseMagicOnion(this IHostBuilder hostBuilder,
IEnumerable <ServerPort> ports,
MagicOnionOptions options,
IEnumerable <Type> types = null,
Assembly[] searchAssemblies = null,
IEnumerable <ChannelOption> channelOptions = null)
{
return(hostBuilder.ConfigureServices((ctx, services) =>
{
var serviceLocator = new ServiceLocatorBridge(services);
options.ServiceLocator = serviceLocator; // replace it.
// build immediately(require register service before create it).
MagicOnionServiceDefinition serviceDefinition;
if (searchAssemblies != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(searchAssemblies, options);
}
else if (types != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(types, options);
}
else
{
if (options != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(options);
}
else
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition();
}
}
// store service definition
services.AddSingleton <MagicOnionServiceDefinition>(serviceDefinition);
// should transient or singleton?
// in AddHostedService<T> implementation, singleton is used
// https://github.com/aspnet/Extensions/blob/8b2482fa68c548e904e4aa1ae38a29c72dcd32a5/src/Hosting/Abstractions/src/ServiceCollectionHostedServiceExtensions.cs#L18
services.AddSingleton <IHostedService, MagicOnionServerService>(serviceProvider =>
{
serviceLocator.provider = serviceProvider; // set built provider.
return new MagicOnionServerService(serviceDefinition, ports, channelOptions);
});
}));
}
private static void AddMagicOnionHostedServiceDefinition(
this IServiceCollection services,
string configurationName = null,
IEnumerable <Type> types = null,
Assembly[] searchAssemblies = null
)
{
if (services.Any(x => (x.ImplementationInstance as MagicOnionHostedServiceDefinition)?.Name == configurationName))
{
throw new InvalidOperationException($"MagicOnion ServiceDefinition for '{configurationName}' is already registerd.");
}
services.AddSingleton <MagicOnionHostedServiceDefinition>(serviceProvider =>
{
var hostingOptions = serviceProvider.GetService <IOptionsMonitor <MagicOnionHostingOptions> >().Get(configurationName);
var options = hostingOptions.Service;
var serviceLocator = new ServiceLocatorBridge(services);
options.ServiceLocator = serviceLocator;
// Build a MagicOnion ServiceDefinition from assemblies/types.
MagicOnionServiceDefinition serviceDefinition;
if (searchAssemblies != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(searchAssemblies, options);
}
else if (types != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(types, options);
}
else
{
if (options != null)
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition(options);
}
else
{
serviceDefinition = MagicOnionEngine.BuildServerServiceDefinition();
}
}
return(new MagicOnionHostedServiceDefinition(configurationName, serviceDefinition));
});
}
