package org.apache.helix.zookeeper.zkclient;

/*
 * 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.
 */

import org.apache.helix.zookeeper.zkclient.exception.ZkInterruptedException;


public class ExceptionUtil {

    public static RuntimeException convertToRuntimeException(Throwable e) {
        if (e instanceof RuntimeException) {
            return (RuntimeException) e;
        }
        retainInterruptFlag(e);
        return new RuntimeException(e);
    }

    /**
     * This sets the interrupt flag if the catched exception was an {@link InterruptedException}. Catching such an
     * exception always clears the interrupt flag.
     *
     * @param catchedException
     *            The catched exception.
     */
    public static void retainInterruptFlag(Throwable catchedException) {
        if (catchedException instanceof InterruptedException) {
            Thread.currentThread().interrupt();
        }
    }

    public static void rethrowInterruptedException(Throwable e) throws InterruptedException {
        if (e instanceof InterruptedException) {
            throw (InterruptedException) e;
        }
        if (e instanceof ZkInterruptedException) {
            throw (ZkInterruptedException) e;
        }
    }
}
