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- /*
- * 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.jorphan.util;
- import java.io.BufferedWriter;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.OutputStreamWriter;
- import java.io.Writer;
- import java.lang.management.ManagementFactory;
- import java.lang.management.ThreadInfo;
- import java.lang.management.ThreadMXBean;
- import java.nio.charset.StandardCharsets;
- import java.text.SimpleDateFormat;
- import java.util.Date;
- /**
- * Utility class to create a Thread Dump
- * @since 3.2
- */
- public class ThreadDumper {
- // Only invoked by IODH class
- private ThreadDumper() {
- super();
- }
- /**
- * Returns name of file containing thread dump.
- * @return Name of file containing thread dump
- * @throws Exception if file cannot be written
- */
- public static String threadDump() throws Exception {
- return threadDump(new File(".")); //$NON-NLS-1$
- }
- /**
- * Returns name of file containing thread dump.
- * @param basedir {@link File} Base directory
- * @return Name of file containing thread dump
- * @throws Exception if file cannot we written
- */
- @SuppressWarnings("JdkObsolete")
- public static String threadDump(File basedir) throws Exception {
- SimpleDateFormat timestampFormat = new SimpleDateFormat("yyyyMMdd_hhmmss_SSS");
- String stamp = timestampFormat.format(new Date());
- File temp = new File(basedir,"thread_dump_"+stamp+".log");
- final String path = temp.getPath();
- try (FileOutputStream fos = new FileOutputStream(temp);
- OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fos, StandardCharsets.UTF_8);
- BufferedWriter bufferedWriter = new BufferedWriter(outputStreamWriter)) {
- writeThreadDump(bufferedWriter);
- }
- return path;
- }
- /**
- * Write Thread Dump
- * @param writer {@link Writer}
- * @throws IOException if file cannot be written
- */
- public static void writeThreadDump(Writer writer) throws IOException {
- ThreadMXBean threadMxBean = ManagementFactory.getThreadMXBean();
- for (ThreadInfo ti : threadMxBean.dumpAllThreads(true, true)) {
- writer.write(ti.toString());
- }
- }
- }
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