| // *************************************************************************************************************************** |
| // * 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.juneau.utils; |
| |
| import java.util.concurrent.atomic.*; |
| |
| import org.apache.juneau.annotation.*; |
| |
| /** |
| * Represents an entry in {@link StackTraceDatabase}. |
| */ |
| @Bean(bpi="exception,hash,count") |
| public class StackTraceInfo implements Comparable<StackTraceInfo> { |
| final AtomicInteger count; |
| final long timeout; |
| final String hash; |
| final String exception; |
| |
| /** |
| * Constructor. |
| * |
| * @param exception The simple name of the exception class. Can be <jk>null</jk>. |
| * @param timeout The time in UTC milliseconds at which point this stack trace info should be discarded from caches. |
| * @param hash The hash id of this stack trace. |
| */ |
| public StackTraceInfo(String exception, long timeout, int hash) { |
| this.count = new AtomicInteger(0); |
| this.timeout = timeout; |
| this.hash = Integer.toHexString(hash); |
| this.exception = exception; |
| } |
| |
| private StackTraceInfo(String exception, int count, long timeout, String hash) { |
| this.count = new AtomicInteger(count); |
| this.timeout = timeout; |
| this.hash = hash; |
| this.exception = exception; |
| } |
| |
| /** |
| * Returns the number of times this stack trace was encountered. |
| * |
| * @return The number of times this stack trace was encountered. |
| */ |
| public int getCount() { |
| return count.intValue(); |
| } |
| |
| /** |
| * Returns an 8-byte hash of the stack trace. |
| * |
| * @return An 8-byte hash of the stack trace. |
| */ |
| public String getHash() { |
| return hash; |
| } |
| |
| /** |
| * Returns the simple class name of the exception. |
| * |
| * @return The simple class name of the exception, or <jk>null</jk> if not specified. |
| */ |
| public String getException() { |
| return exception; |
| } |
| |
| /** |
| * Increments the occurrence count of this exception. |
| * |
| * @return This object (for method chaining). |
| */ |
| public StackTraceInfo increment() { |
| count.incrementAndGet(); |
| return this; |
| } |
| |
| @Override /* Comparable */ |
| public int compareTo(StackTraceInfo o) { |
| return Integer.compare(o.getCount(), getCount()); |
| } |
| |
| @Override /* Object */ |
| public StackTraceInfo clone() { |
| return new StackTraceInfo(exception, count.intValue(), timeout, hash); |
| } |
| } |