Synercoding.HostExtensions.EntityFrameworkCore 1.0.0-alpha02

Usages

Most of the tasks are build so the can be executed in sync and async code. Before calling Run or RunAsync on the IHost, you can call the different extension methods.

If you are for example running a website using EF Core & migrations:

• You can call ExecuteOnDevelopment (from Synercoding.HostExtensions) with in it a call to MigrateDbContext (from Synercoding.HostExtensions.EntityFrameworkCore) and execute the development seed method.
• If the environment isn't development, but instead testing, then the testseed will be executed.
• And if non of those apply, only the migration will be executed.

public class Program
{
    public static async Task Main(string[] args)
    {
        await CreateHostBuilder(args)
            .Build()
            .ExecuteOnDevelopment(host => host.MigrateDbContext<MyContext>(DevelopmentSeeder))
            .ElseIf(host => IsTestingEnvironment(host), host => host.MigrateDbContext<MyContext>(TestingSeeder))
            .Else(host => host.MigrateDbContext<MyContext>())
            .RunAsync();
    }

    private static bool IsTestingEnvironment(IHost host)
        => host.Services.GetRequiredService<IHostEnvironment>().IsEnvironment("Testing");

    private static Task DevelopmentSeeder(MyContext context, IServiceProvider services)
    {
        // Development seed method here
        return Task.CompletedTask;
    }

    private static Task TestingSeeder(MyContext context, IServiceProvider services)
    {
        // Testing seed method here
        return Task.CompletedTask;
    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseStartup<Startup>();
            });
}