/*
 * 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.zookeeper.test;

import io.netty.buffer.ByteBufAllocator;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.zookeeper.ClientCnxnSocketNetty;
import org.apache.zookeeper.server.NettyServerCnxnFactory;

/**
 * Uses reflection to call package-private methods in Netty connection classes
 * to set/clear the test ByteBufAllocator.
 */
public class TestByteBufAllocatorTestHelper {

    public static void setTestAllocator(ByteBufAllocator allocator) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
        Method m1 = NettyServerCnxnFactory.class.getDeclaredMethod("setTestAllocator", ByteBufAllocator.class);
        m1.setAccessible(true);
        m1.invoke(null, allocator);
        Method m2 = ClientCnxnSocketNetty.class.getDeclaredMethod("setTestAllocator", ByteBufAllocator.class);
        m2.setAccessible(true);
        m2.invoke(null, allocator);
    }

    public static void clearTestAllocator() throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
        Method m1 = NettyServerCnxnFactory.class.getDeclaredMethod("clearTestAllocator");
        m1.setAccessible(true);
        m1.invoke(null);
        Method m2 = ClientCnxnSocketNetty.class.getDeclaredMethod("clearTestAllocator");
        m2.setAccessible(true);
        m2.invoke(null);
    }

}
