/*
 * 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.pulsar.functions.utils;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * Util to handle exceptions.
 */
public class Exceptions {

    public static void rethrowIOException(Throwable cause)
            throws IOException {
        if (cause instanceof IOException) {
            throw (IOException) cause;
        } else if (cause instanceof RuntimeException) {
            throw (RuntimeException) cause;
        } else if (cause instanceof Error) {
            throw (Error) cause;
        } else {
            throw new IOException(cause.getMessage(), cause);
        }
    }

    public static String toString(Exception ex) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        ex.printStackTrace(pw);
        return sw.toString();
    }

    public static boolean areExceptionsPresentInChain(Throwable error, Class ... types) {
        while (error != null) {
            for (Class type : types) {
                if (type.isInstance(error)) {
                    return true;
                }
            }
            error = error.getCause();
        }
        return false;
    }

}
