This is a dotnet solution adds an abstraction layer of modules on top of default microsoft dependecy injection. So it becomes easyer to manage and register dependencies between modules
run Install-Package Nandel.Modules in your Nuget console then also install Install-Package Nandel.Modules.AspNetCore for AspNetCore support for extra features.
We can see below we have 3 modules defined, a A depends on B and C, and B depends on C, in this example after
we register the module A in the IServiceCollection we will be registering all the dependencies with the with
the addition that we are actualy checking if we aready haven'd done it yet since C is a dependency of A and B.
using Nandel.Modules;
[DependsOn(
typeof(B),
typeof(C),
)]
class A : IModule, IHasStart, IHasStop
{
public void ConfigureServices(IServiceCollection services)
{
// Here comes module A registration
}
public Task StartAsync(IServiceProvider services)
{
Console.WriteLine("Module A has been Started");
return Task.CompletedTask;
}
public Task StopAsync(IServiceProvider services)
{
Console.WriteLine("Module A has been Stoped");
return Task.CompletedTask;
}
}
[DependsOn(typeof(C))]
class B : IModule
{
public void ConfigureServices(IServiceCollection services)
{
// Here comes module B registration
}
}
class C : IModule
{
public void ConfigureServices(IServiceCollection services)
{
// Here comes module B registration
}
}Now all we have to do is invoke AddModule<ModuleTye>() to register the module and its all deendency tree in the current IServiceCollection.
We can see i also added a services.AddModulesHostedService() that is part of Nandel.Modules.AspNetCore that will manage the IHasStart and IHasStop signatures
in all dependency tree and run then in background as instance of IHostedService.
using Nandel.Modules;
using Nandel.Modules.AspNetCore;
class Startup
{
void ConfigureServices(IServiceCollection services)
{
services.AddModule<A>();
services.AddModulesHostedService();
}
}