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 up Jfr startup 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 }