/*
* Copyright 2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ratpack.groovy.internal;
import com.google.inject.Injector;
import com.google.inject.Module;
import groovy.lang.Closure;
import ratpack.func.Action;
import ratpack.func.Function;
import ratpack.groovy.Groovy;
import ratpack.groovy.guice.internal.DefaultGroovyBindingsSpec;
import ratpack.guice.BindingsSpec;
import ratpack.guice.GuiceBackedHandlerFactory;
import ratpack.handling.Handler;
import ratpack.launch.LaunchConfig;
public class RatpackDslClosureToHandlerTransformer implements Function<Closure<?>, Handler> {
private final LaunchConfig launchConfig;
private final GuiceBackedHandlerFactory handlerFactory;
private final Function<? super Module, ? extends Injector> moduleTransformer;
public RatpackDslClosureToHandlerTransformer(LaunchConfig launchConfig, GuiceBackedHandlerFactory handlerFactory, Function<? super Module, ? extends Injector> moduleTransformer) {
this.launchConfig = launchConfig;
this.handlerFactory = handlerFactory;
this.moduleTransformer = moduleTransformer;
}
@Override
public Handler apply(Closure<?> closure) throws Exception {
final RatpackImpl ratpack = new RatpackImpl();
ClosureUtil.configureDelegateFirst(ratpack, closure);
final Closure<?> bindingsConfigurer = ratpack.bindingsConfigurer;
Closure<?> handlersConfigurer = ratpack.handlersConfigurer;
Action<BindingsSpec> bindingsAction = new Action<BindingsSpec>() {
@Override
public void execute(BindingsSpec thing) throws Exception {
ClosureUtil.delegatingAction(bindingsConfigurer).execute(new DefaultGroovyBindingsSpec(thing));
}
};
return handlerFactory.create(bindingsAction, moduleTransformer, new InjectorHandlerTransformer(launchConfig, handlersConfigurer));
}
static class RatpackImpl implements Groovy.Ratpack {
private Closure<?> bindingsConfigurer;
private Closure<?> handlersConfigurer;
public void bindings(Closure<?> bindingsConfigurer) {
this.bindingsConfigurer = bindingsConfigurer;
}
public void handlers(Closure<?> handlersConfigurer) {
this.handlersConfigurer = handlersConfigurer;
}
}
}