io.undertow.protocols.alpn.ALPNManager Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.protocols.alpn;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.ServiceLoader;
import java.util.function.Function;
import javax.net.ssl.SSLEngine;
/**
* @author Stuart Douglas
*/
public class ALPNManager {
private final ALPNProvider[] alpnProviders;
private final ALPNEngineManager[] alpnEngineManagers;
public static final ALPNManager INSTANCE = new ALPNManager(ALPNManager.class.getClassLoader());
public ALPNManager(ClassLoader classLoader) {
ServiceLoader loader = ServiceLoader.load(ALPNProvider.class, classLoader);
List provider = new ArrayList<>();
for (ALPNProvider prov : loader) {
provider.add(prov);
}
Collections.sort(provider, new Comparator() {
@Override
public int compare(ALPNProvider o1, ALPNProvider o2) {
return Integer.compare(o2.getPriority(), o1.getPriority()); //highest first
}
});
this.alpnProviders = provider.toArray(new ALPNProvider[0]);
ServiceLoader managerLoader = ServiceLoader.load(ALPNEngineManager.class, classLoader);
List managers = new ArrayList<>();
for (ALPNEngineManager manager : managerLoader) {
managers.add(manager);
}
Collections.sort(managers, new Comparator() {
@Override
public int compare(ALPNEngineManager o1, ALPNEngineManager o2) {
return Integer.compare(o2.getPriority(), o1.getPriority()); //highest first
}
});
this.alpnEngineManagers = managers.toArray(new ALPNEngineManager[0]);
}
public ALPNProvider getProvider(SSLEngine engine) {
for (ALPNProvider provider : alpnProviders) {
if (provider.isEnabled(engine)) {
return provider;
}
}
return null;
}
public void registerEngineCallback(SSLEngine original, Function selectionFunction) {
for(ALPNEngineManager manager : alpnEngineManagers) {
if(manager.registerEngine(original, selectionFunction)) {
return;
}
}
}
}