com.netflix.iep.guice.LifecycleModule Maven / Gradle / Ivy
/*
* Copyright 2015 Netflix, Inc.
*
* 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 com.netflix.iep.guice;
import com.google.inject.AbstractModule;
import com.google.inject.TypeLiteral;
import com.google.inject.matcher.Matchers;
import com.google.inject.spi.InjectionListener;
import com.google.inject.spi.ProvisionListener;
import com.google.inject.spi.TypeEncounter;
import com.google.inject.spi.TypeListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Provider;
import java.lang.reflect.Method;
/**
* Helper for listening to injection events and invoking the PostConstruct and PreDestroy
* annotated methods.
*/
public class LifecycleModule extends AbstractModule {
private static final Logger LOGGER = LoggerFactory.getLogger(LifecycleModule.class);
private static class BindingListener implements ProvisionListener {
private PreDestroyList preDestroyList;
BindingListener(PreDestroyList preDestroyList) {
this.preDestroyList = preDestroyList;
}
@Override public void onProvision(ProvisionInvocation provisionInvocation) {
T value = provisionInvocation.provision();
AnnotationUtils.invokePostConstruct(LOGGER, value, preDestroyList);
}
}
@Override protected void configure() {
PreDestroyList list = new PreDestroyList();
bindListener(Matchers.any(), new BindingListener(list));
bind(PreDestroyList.class).toInstance(list);
}
@Override public boolean equals(Object obj) {
return obj != null && getClass().equals(obj.getClass());
}
@Override public int hashCode() {
return getClass().hashCode();
}
}