LightIoC– Another lightweight IoC Library

Hi Community,

Today’s post is about an IoC library I wrote back in 2013. I called it “LightIoc” because it’s self-contained in a single assembly file. Over the years I have used a few IoC libraries some of them are easy to use, others a bit bulkier or with more dependant assemblies but for this one I added a few custom features as mentioned below:

  • Pre-jitting of assemblies to improve start-up performance. This is configuration driven
  • Discovery of assemblies at start-up
  • Configuration and registration of types via code or config files
  • Lifespan of objects, in other words, objects that are required to do something then are self-disposed
///////////////////////

// Sample config file//

///////////////////////

 

<configuration>

    <configSections>

        <section name="LightIoC" allowLocation="false" allowDefinition="Everywhere"

                         type="LightIoC.Configuration.ConfigReader, LightIoC, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>

    </configSections>

    <LightIoC>

        <Pre-Jitting enabled="true"/>

        <registrations>

            <register name="IDispatchMessageInspector" />

            <register name="ITestLib" type="WebAPI.Core.Interfaces.ITestLib" assemblyFQN="WebAPI.Core.Interfaces, Version=1.0.0.0, Culture=neutral, PublicKeyToken=23e52edaf0ea7bd4"  />

            <register name="IWebApiLogger" type="WebAPI.Core.Interfaces.IWebApiLogger" assemblyFQN="WebAPI.Core.Interfaces, Version=1.0.0.0, Culture=neutral, PublicKeyToken=23e52edaf0ea7bd4"  />

            <register name="IWebApiPerfCounter" type="WebAPI.Core.Interfaces.IWebApiLogger" assemblyFQN="WebAPI.Core.Interfaces, Version=1.0.0.0, Culture=neutral, PublicKeyToken=23e52edaf0ea7bd4"  />

        </registrations>

        <mappings>

            <map abstraction="IWebApiLogger" to="DefaultLogger" instanceRequired="true" />

            <map abstraction="IWebApiPerfCounter" to="WebApiPerfCounter" instanceRequired="true" />

            <map abstraction="IDispatchMessageInspector" to="MessageInspector" instanceRequired="true" />

            <map abstraction="ITestLib" to="ThisIsADestroyableClass" instanceRequired="true" lifeSpan="300" />

        </mappings>

    </LightIoC>

</configuration?

Alternatively I could have also registered my type container in code, as shown. Type registration can take a Type as such or also the name of the type as string, hence validation occurs at initialization of the container.

public void InitializeTypeContainer<T>() where T: System.ComponentModel.Component {

            if (!TypeContainerInitialized) {

                TypeContainer.Current.RegisterType<IUnifiedShell>("UnifiedShell");

                TypeContainer.Current.RegisterType<IShellConfig>("ShellConfig");

                TypeContainer.Current.RegisterType<ILogger>("Logger", true);

                TypeContainer.Current.RegisterType<IAgentService>("AgentService");

                TypeContainer.Current.RegisterType<IAutomationResult>("AutomationResult");

                TypeContainer.Current.RegisterType<IAutomationRequest>("AutomationRequest");

                TypeContainer.Current.RegisterType<IPerfCounters>("PerfCounters", true);

                TypeContainer.Current.RegisterType<IServiceOperation>("ServiceOperation");

                TypeContainer.Current.RegisterType<IServiceInformation>("CustomServiceBase", true);

                TypeContainer.Current.RegisterType<IBaseService<T>>(typeof(T).Name, true);

                TypeContainer.Current.RegisterType<IAutomationEngine>(TypeContainer.Current.Resolve<IBaseService<T>>());

            }

}

 

I hope you find this useful. Source code is available here

 

Regards,

 

Angel

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Filed under: Microsoft - @ April 17, 2016 6:21 pm

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