Gradle source code entry 7: gradle source code

Gradle source code entry 7: gradle source code

Today I analyzed the Object org. gradle. internal. service. DefaultServiceRegistry. doGet (Type serviceType) function.

    private Object doGet(Type serviceType) throws IllegalArgumentException {        synchronized (lock) {            if (closed) {                throw new IllegalStateException(String.format("Cannot locate service of type %s, as %s has been closed.", format(serviceType), displayName));            }            DefaultLookupContext context = new DefaultLookupContext();            ServiceProvider provider = context.find(serviceType, allServices);            if (provider != null) {                return provider.get();            }            throw new UnknownServiceException(serviceType, String.format("No service of type %s available in %s.", format(serviceType), displayName));        }    }

The focus here is context. find (serviceType, allServices );

AllServices is a variable of the CompositeProvider type. When serviceType is a value

In the getService of the CompositeProvider class, the class diagram shows that it also maintains a List of providers,

Traverse the list and continue provider. getSerivce.

Ownservices is also a member of allServices. providers by default.

1. FindDecoratorMethods (target, type, methods, ownServices );
2. FindFactoryMethods (target, type, methods, ownServices );

Come,

Result

For example, when serviceType is interface org. gradle. logging. StyledTextOutputFactory

Provider is Service StyledTextOutputFactory at LoggingServiceRegistry. createStyledTextOutputFactory ()