1 /* 2 * Copyright (c) 2015, 2018, 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.nio.file.Path; 29 import java.nio.file.Paths; 30 import java.util.regex.Matcher; 31 import java.util.regex.Pattern; 32 33 import jdk.test.lib.Asserts; 34 import jdk.test.lib.jfr.FileHelper; 35 import jdk.test.lib.process.OutputAnalyzer; 36 37 /* 38 * @test 39 * @summary Start a recording without name. 40 * @key jfr 41 * @library /test/lib /test/jdk 42 * @run main/othervm jdk.jfr.jcmd.TestJcmdStartStopDefault 43 */ 44 public class TestJcmdStartStopDefault { 45 46 public static void main(String[] args) throws Exception { 47 Path recording = Paths.get(".","TestJcmdStartStopDefault.jfr").toAbsolutePath().normalize(); 48 49 OutputAnalyzer output = JcmdHelper.jcmd("JFR.start"); 50 JcmdAsserts.assertRecordingHasStarted(output); 51 52 String name = parseRecordingName(output); 53 JcmdHelper.waitUntilRunning(name); 54 55 output = JcmdHelper.jcmd("JFR.dump", 56 "name=" + name, 57 "filename=" + recording); 58 JcmdAsserts.assertRecordingDumpedToFile(output, recording.toFile()); 59 JcmdHelper.stopAndCheck(name); 60 FileHelper.verifyRecording(recording.toFile()); 61 } 62 63 private static String parseRecordingName(OutputAnalyzer output) { 64 // Expected output: 65 // Started recording recording-1. No limit (duration/maxsize/maxage) in use. 66 // Use JFR.dump name=recording-1 filename=FILEPATH to copy recording data to file. 67 68 String stdout = output.getStdout(); 69 Pattern p = Pattern.compile(".*Use jcmd \\d+ JFR.dump name=(\\S+).*", Pattern.DOTALL); 70 Matcher m = p.matcher(stdout); 71 Asserts.assertTrue(m.matches(), "Could not parse recording name"); 72 String name = m.group(1); 73 System.out.println("Recording name=" + name); 74 return name; 75 } 76 }