Skip to content

Enable support for building services with IHostApplicationBuilder #57

Description

@pedropaulovc

.NET 6 brought new builder types inheriting from IHostApplicationBuilder that refactor how to developers may build web / console hosts with fewer callbacks: Comparing WebApplicationBuilder to the Generic Host

WebApplicationBuilder : IHostApplicationBuilder
HostApplicationBuilder : IHostApplicationBuilder

The old IHostBuilder pattern remains supported. A comparision of how both initializations can work is:

IHostBuilder

IHostApplicationBuilder

HostApplicationBuilder builder = Host.CreateApplicationBuilder(args);

builder.Configuration.AddUserSecrets<Program>();

builder.Services.Configure<TaskHubOptions>(opt =>
{
   opt.CreateIfNotExists = true;
});
builder.Services.AddSingleton<IConsole, ConsoleWrapper>();
builder.Services.AddHostedService<TaskEnqueuer>();
builder.Services.AddSingleton(UseLocalEmulator());

builder.ConfigureTaskHubWorker((context, builder) =>
{
   builder.AddClient();
   builder.UseOrchestrationMiddleware<SampleMiddleware>();
   builder.UseActivityMiddleware<SampleMiddleware>();

   builder
       .AddOrchestration<GreetingsOrchestration>()
       .AddOrchestration<GenericOrchestrationRunner>();

   builder.AddActivitiesFromAssembly<Program>();
});

IHost host = builder.Build();

return host.RunAsync();
IHost host = Host.CreateDefaultBuilder(args)
    .ConfigureAppConfiguration(builder => builder.AddUserSecrets<Program>())
    .ConfigureServices(services =>
    {
        services.Configure<TaskHubOptions>(opt =>
        {
            opt.CreateIfNotExists = true;
        });
        services.AddSingleton<IConsole, ConsoleWrapper>();
        services.AddHostedService<TaskEnqueuer>();
        services.AddSingleton(UseLocalEmulator());
    })
    .ConfigureTaskHubWorker((context, builder) =>
    {
        builder.AddClient();
        builder.UseOrchestrationMiddleware<SampleMiddleware>();
        builder.UseActivityMiddleware<SampleMiddleware>();

        builder
            .AddOrchestration<GreetingsOrchestration>()
            .AddOrchestration<GenericOrchestrationRunner>();

        builder.AddActivitiesFromAssembly<Program>();
    })
    .UseConsoleLifetime()
    .Build();

return host.RunAsync();

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions