org.redisson.misc.ProxyBuilder Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of redisson Show documentation
Redis Java client with features of In-Memory Data Grid
There is a newer version: 3.40.2
/**
 * Copyright (c) 2013-2024 Nikita Koksharov
 *
 * 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.redisson.misc;

import org.redisson.api.RFuture;
import org.redisson.connection.ServiceManager;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Objects;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 *
 * @author Nikita Koksharov
 *
 */
//TODO refactor to common object and MethodHandles
//MethodHandle mh = MethodHandles.lookup().findVirtual(implementation.getClass(), method.getName(),
//                MethodType.methodType(method.getReturnType(), method.getParameterTypes()));
public class ProxyBuilder {

    public interface Callback {

        Object execute(Callable> callable, Method instanceMethod);

    }

    private static class CacheKey {

        final Method method;
        final Class instanceClass;

        CacheKey(Method method, Class instanceClass) {
            super();
            this.method = method;
            this.instanceClass = instanceClass;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;
            CacheKey cacheKey = (CacheKey) o;
            return method.equals(cacheKey.method) && instanceClass.equals(cacheKey.instanceClass);
        }

        @Override
        public int hashCode() {
            return Objects.hash(method, instanceClass);
        }
    }

    private static final ConcurrentMap METHODS_MAPPING = new ConcurrentHashMap();

    public static  T create(Callback commandExecutor, Object instance, Object implementation, Class clazz, ServiceManager serviceManager) {
        InvocationHandler handler = new InvocationHandler() {
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                Method instanceMethod = getMethod(method, instance, implementation);

                if (instanceMethod.getName().endsWith("Async")) {
                    Callable> callable = () -> (RFuture