1 /* 2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.jcmd; 27 28 import java.io.File; 29 import java.util.regex.Matcher; 30 import java.util.regex.Pattern; 31 32 import jdk.testlibrary.Asserts; 33 import jdk.testlibrary.jfr.FileHelper; 34 import jdk.testlibrary.OutputAnalyzer; 35 import jdk.testlibrary.jfr.JcmdAsserts; 36 import jdk.testlibrary.jfr.JcmdHelper; 37 38 /* 39 * @test 40 * @summary Start a recording without name. 41 * @key jfr 42 * @library /lib/testlibrary 43 * @run main/othervm jdk.jfr.jcmd.TestJcmdStartStopDefault 44 */ 45 public class TestJcmdStartStopDefault { 46 47 public static void main(String[] args) throws Exception { 48 File recording = new File("TestJcmdStartStopDefault.jfr"); 49 50 OutputAnalyzer output = JcmdHelper.jcmd("JFR.start"); 51 JcmdAsserts.assertRecordingHasStarted(output); 52 53 String name = parseRecordingName(output); 54 name= "Recording-" + name; 55 JcmdHelper.waitUntilRunning(name); 56 57 output = JcmdHelper.jcmd("JFR.dump", 58 "name=" + name, 59 "filename=" + recording.getAbsolutePath()); 60 JcmdAsserts.assertRecordingDumpedToFile(output, name, recording); 61 JcmdHelper.stopAndCheck(name); 62 FileHelper.verifyRecording(recording); 63 } 64 65 private static String parseRecordingName(OutputAnalyzer output) { 66 // Expected output: 67 // Started recording recording-1. No limit (duration/maxsize/maxage) in use. 68 // Use JFR.dump name=recording-1 filename=FILEPATH to copy recording data to file. 69 70 String stdout = output.getStdout(); 71 Pattern p = Pattern.compile(".*Use JFR.dump name=(\\S+).*", Pattern.DOTALL); 72 Matcher m = p.matcher(stdout); 73 Asserts.assertTrue(m.matches(), "Could not parse recording name"); 74 String name = m.group(1); 75 System.out.println("Recording name=" + name); 76 return name; 77 } 78 }