| /* |
| * 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.solr.common.util; |
| |
| import java.io.Closeable; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ExecutorService; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ObjectReleaseTracker { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| public static Map<Object,String> OBJECTS = new ConcurrentHashMap<>(); |
| |
| public static boolean track(Object object) { |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new PrintWriter(sw); |
| new ObjectTrackerException(object.getClass().getName()).printStackTrace(pw); |
| OBJECTS.put(object, sw.toString()); |
| return true; |
| } |
| |
| public static boolean release(Object object) { |
| OBJECTS.remove(object); |
| return true; |
| } |
| |
| public static void clear() { |
| OBJECTS.clear(); |
| } |
| |
| /** |
| * @return null if ok else error message |
| */ |
| public static String checkEmpty() { |
| String error = null; |
| Set<Entry<Object,String>> entries = OBJECTS.entrySet(); |
| |
| if (entries.size() > 0) { |
| List<String> objects = new ArrayList<>(); |
| for (Entry<Object,String> entry : entries) { |
| objects.add(entry.getKey().getClass().getSimpleName()); |
| } |
| |
| error = "ObjectTracker found " + entries.size() + " object(s) that were not released!!! " + objects + "\n"; |
| for (Entry<Object,String> entry : entries) { |
| error += entry.getValue() + "\n"; |
| } |
| } |
| |
| return error; |
| } |
| |
| public static void tryClose() { |
| Set<Entry<Object,String>> entries = OBJECTS.entrySet(); |
| |
| if (entries.size() > 0) { |
| for (Entry<Object,String> entry : entries) { |
| if (entry.getKey() instanceof Closeable) { |
| try { |
| ((Closeable)entry.getKey()).close(); |
| } catch (Throwable t) { |
| log.error("", t); |
| } |
| } else if (entry.getKey() instanceof ExecutorService) { |
| try { |
| ExecutorUtil.shutdownAndAwaitTermination((ExecutorService)entry.getKey()); |
| } catch (Throwable t) { |
| log.error("", t); |
| } |
| } |
| } |
| } |
| } |
| |
| private static class ObjectTrackerException extends RuntimeException { |
| ObjectTrackerException(String msg) { |
| super(msg); |
| } |
| } |
| |
| } |