1 /* 2 * Copyright (c) 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.jvm; 27 28 import java.io.IOException; 29 import java.nio.file.Files; 30 import java.nio.file.Paths; 31 import java.util.ArrayList; 32 import java.util.List; 33 34 /** 35 * @test TestLogOutput 36 * @key jfr 37 * @summary Sanity test jfr logging output 38 * 39 * @library /lib / 40 * @run main/othervm -Xlog:disable -Xlog:jfr*=trace:file=jfr_trace.txt -XX:StartFlightRecording=duration=1s,filename=recording.jfr jdk.jfr.jvm.TestLogOutput 41 */ 42 public class TestLogOutput { 43 public static void main(String[] args) throws Exception { 44 final String fileName = "jfr_trace.txt"; 45 final List<String>findWhat = new ArrayList<>(); 46 findWhat.add("Starting a recording"); 47 findWhat.add("Flight Recorder initialized"); 48 boolean passed = false; 49 List<String> matches = new ArrayList<String>(findWhat); 50 51 do { 52 List<String> lines; 53 try { 54 lines = Files.readAllLines(Paths.get(fileName)); 55 } catch (IOException e) { 56 throw new Error(e); 57 } 58 for (String l : lines) { 59 for (String m : matches) { 60 if (l.toString().contains(m)) { 61 matches.remove(m); 62 break; 63 } 64 } 65 } 66 if (matches.size() < 1) { 67 passed = true; 68 break; 69 } 70 if (lines.size() > 100) { 71 break; /* did not find it */ 72 } 73 } while(!passed); 74 75 if (!passed) { 76 throw new Error("Not found " + findWhat + " in stream"); 77 } 78 79 System.out.println("PASSED"); 80 } 81 }