ArtificerServerException.java

/*
 * Copyright 2012 JBoss 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 org.artificer.common.error;

import org.artificer.common.ArtificerException;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author eric.wittmann@redhat.com
 */
public class ArtificerServerException extends ArtificerException {

    private static final long serialVersionUID = 2648287148198104189L;

    private static final Pattern ST_PATTERN = Pattern.compile("([a-zA-Z0-9_\\.]*)\\.([a-zA-Z0-9_\\.]*)\\(([a-zA-Z0-9_\\.]*):([\\d]*)\\)");

    /**
     * Constructor.
     */
    public ArtificerServerException() {
    }

    /**
     * Constructor.
     * @param message
     */
    public ArtificerServerException(String message) {
        super(message);
    }

    /**
     * Constructor.
     * @param message
     * @param cause
     */
    public ArtificerServerException(String message, Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructor.
     * @param cause
     */
    public ArtificerServerException(Throwable cause) {
        super(cause);
    }

    /**
     * Constructor.
     * @param msg
     * @param stackTrace
     */
    public ArtificerServerException(String msg, String stackTrace) {
        super(msg);
        setStackTrace(parseStackTrace(stackTrace));
    }

    /**
     * Parses a stack trace string into an array of stack trace elements.  Basically
     * reverses the "printStackTrace" process.
     * @param stackTrace string formatted java stack trace
     * @return stack trace element array
     */
    private static StackTraceElement[] parseStackTrace(String stackTrace) {
        List<StackTraceElement> stElements = new ArrayList<StackTraceElement>();

        Matcher matcher = ST_PATTERN.matcher(stackTrace);
        while (matcher.find()){
            String className = matcher.group(1);
            String methodName = matcher.group(2);
            String fileName = matcher.group(3);
            int lineNumber = Integer.parseInt(matcher.group(4) == null ? "0" : matcher.group(4));
            stElements.add(new StackTraceElement(className, methodName, fileName, lineNumber));
        }

        return stElements.toArray(new StackTraceElement[stElements.size()]);
    }

}