com.google.caliper.runner.worker.ProxyWorkerException.java Source code

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Here is the source code for com.google.caliper.runner.worker.ProxyWorkerException.java

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/*
 * Copyright (C) 2012 Google Inc.
 *
 * 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 com.google.caliper.runner.worker;

import com.google.common.base.Joiner;
import com.google.common.base.Splitter;

/**
 * An exception created on the runner with the same stack trace as one thrown on the worker that
 * reports the actual exception class and message in its message.
 */
public final class ProxyWorkerException extends RuntimeException {

    private final String exceptionType;
    private final String message;

    public ProxyWorkerException(String exceptionType, String message, String stackTrace) {
        super(formatMessage(stackTrace));
        this.message = message;
        this.exceptionType = exceptionType;
    }

    /** Returns the type of the original exception. */
    public String exceptionType() {
        return exceptionType;
    }

    /** Returns the message from the original exception. */
    public String message() {
        return message;
    }

    private static String formatMessage(String stackTrace) {
        StringBuilder builder = new StringBuilder(stackTrace.length() + 512)
                .append("An exception occurred in a worker process. The stack trace is as follows:\n\t");
        Joiner.on("\n\t").appendTo(builder, Splitter.on('\n').split(stackTrace));
        return builder.toString();
    }
}