curator-framework/src/test/java/org/apache/curator/ConnectionStateAccessor.java

/**
 * 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.curator;

import org.apache.curator.framework.CuratorFramework;

import java.lang.reflect.Field;

public final class ConnectionStateAccessor
{
    public static void setDebugWaitOnExpiredForClient(CuratorFramework client)
    {
        CuratorZookeeperClient zookeeperClient = client.getZookeeperClient();
        ConnectionState state = (ConnectionState)getInternalState(zookeeperClient, "state");
        state.debugWaitOnExpiredEvent = true;
    }

    private static Object getInternalState(Object target, String field) {
        Class<?> c = target.getClass();
        try {
            Field f = c.getDeclaredField(field);
            f.setAccessible(true);
            return f.get(target);
        } catch (Exception e) {
            throw new RuntimeException("Unable to get internal state on a private field.", e);
        }
    }
}