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 }