Dependency Injection

Dependency Injection or Inversion of Control (IoC) is done with google guice (https://github.com/google/guice)

MySvc.java:

public interace MySvc {
    public void myServiceMethod()
}

MySvcImpl.java

public class MySvcImpl implements MySvc {
   public void myServiceMethod() {
       System.out.println("It works!");
   }
}

MyGuiceModule.java:

public class MyGuiceModule extends com.google.inject.AbstractModule {
    @Override
    public void configure() {
        bind(MySvc.class).to(MySvcImpl.class).in(com.google.inject.Singleton.class);
    }
}

MyPublisher.java:

import com.google.inject.Guice;
import com.google.inject.Inject; 


public class MyPublisher extends Publisher {


    private transient MySvc mySvc;


    private String someJobConfig


    @DataBoundConstructor
    public MyPublisher(String someJobConfig) {
        // no constructor injection
        this.someJobConfig = someJobConfig;
    }


    @Inject
    public void setMySvc(MySvc mySvc) {
        this.mySvc = mySvc;
    }


    @Override
    public boolean perform(AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener)
    {
	if (mySvc == null)
	{
        	Guice.createInjector(new MyModule()).injectMembers(this);
	}
        // ...
        mySvc.myServiceMethod(); // "it works!"
    }

Jenkins : Dependency Injection

Dependency Injection