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