1 /*

     2  * Copyright (c) 2016, 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.internal.cmd;

    27 

    28 import java.io.IOException;

    29 import java.nio.file.Path;

    30 import java.nio.file.Paths;

    31 import java.time.Duration;

    32 import java.time.Instant;

    33 import java.util.ArrayList;

    34 import java.util.Collections;

    35 import java.util.Deque;

    36 import java.util.HashMap;

    37 import java.util.List;

    38 

    39 import jdk.jfr.EventType;

    40 import jdk.jfr.internal.MetadataDescriptor;

    41 import jdk.jfr.internal.Type;

    42 import jdk.jfr.internal.consumer.ChunkHeader;

    43 import jdk.jfr.internal.consumer.RecordingInput;

    44 

    45 final class SummaryCommand extends Command {

    46 

    47     private static class Statistics {

    48         Statistics(String name) {

    49             this.name = name;

    50         }

    51 

    52         String name;

    53         long count;

    54         long size;

    55     }

    56 

    57     @Override

    58     public String getOptionSyntax() {

    59         return "<file>";

    60     }

    61 

    62     @Override

    63     public void displayOptionUsage() {

    64         println("  <file>   Location of the recording file (.jfr) to display information about");

    65     }

    66 

    67     @Override

    68     public String getName() {

    69         return "summary";

    70     }

    71 

    72     @Override

    73     public String getDescription() {

    74         return "Display general information about a recording file (.jfr)";

    75     }

    76 

    77     @Override

    78     public void execute(Deque<String> options) {

    79         if (options.isEmpty()) {

    80             userFailed("Missing file");

    81         }

    82         ensureMaxArgumentCount(options, 1);

    83         Path p = Paths.get(options.remove());

    84         ensureFileExist(p);

    85         ensureJFRFile(p);

    86         try {

    87             printInformation(p);

    88         } catch (IOException e) {

    89             throw new IllegalStateException("Unexpected error. " + e.getMessage());

    90         }

    91     }

    92 

    93     private void printInformation(Path p) throws IOException {

    94         long totalSize = 0;

    95         long totalDuration = 0;

    96         long chunks = 0;

    97 

    98         try (RecordingInput input = new RecordingInput(p.toFile())) {

    99             ChunkHeader first = new ChunkHeader(input);

   100             ChunkHeader ch = first;

   101             String eventPrefix = Type.EVENT_NAME_PREFIX;

   102             if (first.getMajor() == 1) {

   103                 eventPrefix = "com.oracle.jdk.";

   104             }

   105             HashMap<Long, Statistics> stats = new HashMap<>();

   106             stats.put(0L, new Statistics(eventPrefix + "Metadata"));

   107             stats.put(1L, new Statistics(eventPrefix + "CheckPoint"));

   108             int minWidth = 0;

   109             while (true) {

   110                 long chunkEnd = ch.getEnd();

   111                 MetadataDescriptor md = ch.readMetadata();

   112 

   113                 for (EventType eventType : md.getEventTypes()) {

   114                     stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName()));

   115                     minWidth = Math.max(minWidth, eventType.getName().length());

   116                 }

   117 

   118                 totalSize += ch.getSize();

   119                 totalDuration += ch.getDuration();

   120                 chunks++;

   121                 input.position(ch.getEventStart());

   122                 while (input.position() < chunkEnd) {

   123 

   124                     long pos = input.position();

   125                     int size = input.readInt();

   126                     long eventTypeId = input.readLong();

   127                     Statistics s = stats.get(eventTypeId);

   128 

   129                     if (s != null) {

   130                         s.count++;

   131                         s.size += size;

   132                     }

   133                     input.position(pos + size);

   134                 }

   135                 if (ch.isLastChunk()) {

   136                     break;

   137                 }

   138                 ch = ch.nextHeader();

   139             }

   140             println();

   141             long epochSeconds = first.getStartNanos() / 1_000_000_000L;

   142             long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L;

   143             println(" Version: " + first.getMajor() + "." + first.getMinor());

   144             println(" Chunks: " + chunks);

   145             println(" Size: " + totalSize + " bytes");

   146             println(" Start: " + Instant.ofEpochSecond(epochSeconds, adjustNanos));

   147             println(" Duration: " + Duration.ofNanos(totalDuration));

   148             println();

   149             println(" Start Ticks: " + first.getStartTicks());

   150             println(" Ticks / Second: " + first.getTicksPerSecond());

   151 

   152             List<Statistics> statsList = new ArrayList<>(stats.values());

   153             Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count));

   154             println();

   155             String header = "      Count  Size (bytes) ";

   156             String typeHeader = " Event Type";

   157             minWidth = Math.max(minWidth, typeHeader.length());

   158             println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header);

   159             println(pad(minWidth + header.length(), '='));

   160             for (Statistics s : statsList) {

   161                 System.out.printf(" %-" + minWidth + "s%10d  %12d\n", s.name, s.count, s.size);

   162             }

   163         }

   164     }

   165 

   166     private String pad(int count, char c) {

   167         StringBuilder sb = new StringBuilder();

   168         for (int i = 0; i < count; i++) {

   169             sb.append(c);

   170         }

   171         return sb.toString();

   172     }

   173 }