eagle-core/eagle-common/src/main/java/org/apache/eagle/common/EagleExceptionWrapper.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.eagle.common;

public class EagleExceptionWrapper {
    private static final int MAX_DEPTH = 10;

    public static String wrap(Exception ex) {
        return wrap(ex, EagleExceptionWrapper.MAX_DEPTH);
    }

    public static String wrap(Exception ex, int maxdepth) {
        if (ex == null) {
            return null;
        }
        int d = maxdepth;
        if (d <= 0) {
            d = EagleExceptionWrapper.MAX_DEPTH;
        }
        int index = 0;
        StringBuffer sb = new StringBuffer();
        sb.append(ex);
        sb.append(System.getProperty("line.separator"));
        for (StackTraceElement element : ex.getStackTrace()) {
            sb.append(element.toString());
            sb.append(System.getProperty("line.separator"));
            if (++index >= d) {
                break;
            }
        }
        return sb.toString();
    }
}