org.atmosphere.jersey.BroadcasterInjector Maven / Gradle / Ivy
/*
* Copyright 2008-2020 Async-IO.org
*
* 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 org.atmosphere.jersey;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.spi.inject.Injectable;
import org.atmosphere.cpr.Broadcaster;
import javax.ws.rs.core.Context;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.lang.reflect.Type;
/**
* Allow {@link Broadcaster} injection via the {@link Context} annotation supported
* by Jersey.
*
* @author Jeanfrancois Arcand
* @author Paul Sandoz
*/
abstract class BroadcasterInjector extends BaseInjectableProvider {
boolean isValidType(Type t) {
return (t instanceof Class) && Broadcaster.class.isAssignableFrom((Class) t);
}
public static final class PerRequest extends BroadcasterInjector {
@Override
public ComponentScope getScope() {
return ComponentScope.PerRequest;
}
@Override
public Injectable getInjectable(ComponentContext ic, Context a, Type t) {
if (!isValidType(t))
return null;
return new Injectable() {
@Override
public Broadcaster getValue() {
return getAtmosphereResource(Broadcaster.class, true).getBroadcaster();
}
};
}
}
public static final class Singleton extends BroadcasterInjector {
@Override
public ComponentScope getScope() {
return ComponentScope.Singleton;
}
@Override
public Injectable getInjectable(ComponentContext ic, Context a, Type t) {
if (!isValidType(t))
return null;
return new Injectable() {
@Override
public Broadcaster getValue() {
return (Broadcaster) Proxy.newProxyInstance(this.getClass().getClassLoader(),
new Class[]{Broadcaster.class},
new InvocationHandler() {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return method.invoke(getAtmosphereResource(Broadcaster.class, true).getBroadcaster(),
args);
}
});
}
};
}
}
}
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