org.apache.dubbo.common.serialize.hessian2.dubbo.AbstractHessian2FactoryInitializer Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.dubbo.common.serialize.hessian2.dubbo;
import com.alibaba.com.caucho.hessian.io.SerializerFactory;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public abstract class AbstractHessian2FactoryInitializer implements Hessian2FactoryInitializer {
private static final Map CL_2_SERIALIZER_FACTORY = new ConcurrentHashMap<>();
private static volatile SerializerFactory SYSTEM_SERIALIZER_FACTORY;
@Override
public SerializerFactory getSerializerFactory() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
if (classLoader == null) {
// system classloader
if (SYSTEM_SERIALIZER_FACTORY == null) {
synchronized (AbstractHessian2FactoryInitializer.class) {
if (SYSTEM_SERIALIZER_FACTORY == null) {
SYSTEM_SERIALIZER_FACTORY = createSerializerFactory();
}
}
}
return SYSTEM_SERIALIZER_FACTORY;
}
if (!CL_2_SERIALIZER_FACTORY.containsKey(classLoader)) {
synchronized (AbstractHessian2FactoryInitializer.class) {
if (!CL_2_SERIALIZER_FACTORY.containsKey(classLoader)) {
SerializerFactory serializerFactory = createSerializerFactory();
CL_2_SERIALIZER_FACTORY.put(classLoader, serializerFactory);
return serializerFactory;
}
}
}
return CL_2_SERIALIZER_FACTORY.get(classLoader);
}
protected abstract SerializerFactory createSerializerFactory();
}