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.internal.tool;

    27 

    28 import java.io.FileNotFoundException;

    29 import java.io.IOException;

    30 import java.io.PrintWriter;

    31 import java.nio.file.Path;

    32 import java.util.ArrayList;

    33 import java.util.HashMap;

    34 import java.util.List;

    35 import java.util.Map;

    36 import java.util.function.Predicate;

    37 

    38 import jdk.jfr.EventType;

    39 import jdk.jfr.Timespan;

    40 import jdk.jfr.Timestamp;

    41 import jdk.jfr.ValueDescriptor;

    42 import jdk.jfr.consumer.RecordedEvent;

    43 import jdk.jfr.consumer.RecordedObject;

    44 import jdk.jfr.consumer.RecordingFile;

    45 import jdk.jfr.internal.consumer.RecordingInternals;

    46 

    47 abstract class EventPrintWriter extends StructuredWriter {

    48 

    49     enum ValueType {

    50         TIMESPAN, TIMESTAMP, OTHER

    51     }

    52 

    53     protected static final String STACK_TRACE_FIELD = "stackTrace";

    54     protected static final String EVENT_THREAD_FIELD = "eventThread";

    55 

    56     private Predicate<EventType> eventFilter = x -> true;

    57     private int stackDepth;

    58 

    59     // cach that will speed up annotation lookup

    60     private Map<ValueDescriptor, ValueType> typeOfValues = new HashMap<>();

    61 

    62     EventPrintWriter(PrintWriter p) {

    63         super(p);

    64     }

    65 

    66     abstract protected void print(List<RecordedEvent> events);

    67 

    68     void print(Path source) throws FileNotFoundException, IOException {

    69         List<RecordedEvent> events = new ArrayList<>(500_000);

    70         printBegin();

    71         try (RecordingFile file = new RecordingFile(source)) {

    72             while (file.hasMoreEvents()) {

    73                 RecordedEvent event = file.readEvent();

    74                 if (acceptEvent(event)) {

    75                     events.add(event);

    76                 }

    77                 if (RecordingInternals.INSTANCE.isLastEventInChunk(file)) {

    78                     RecordingInternals.INSTANCE.sort(events);

    79                     print(events);

    80                     events.clear();

    81                 }

    82             }

    83         }

    84         printEnd();

    85         flush(true);

    86     }

    87 

    88     protected void printEnd() {

    89     }

    90 

    91     protected void printBegin() {

    92     }

    93 

    94     public final void setEventFilter(Predicate<EventType> eventFilter) {

    95         this.eventFilter = eventFilter;

    96     }

    97 

    98     protected final boolean acceptEvent(RecordedEvent event) {

    99         return eventFilter.test(event.getEventType());

   100     }

   101 

   102     protected final int getStackDepth() {

   103         return stackDepth;

   104     }

   105 

   106     protected final boolean isLateField(String name) {

   107         return name.equals(EVENT_THREAD_FIELD) || name.equals(STACK_TRACE_FIELD);

   108     }

   109 

   110     public void setStackDepth(int stackDepth) {

   111         this.stackDepth = stackDepth;

   112     }

   113 

   114     protected Object getValue(RecordedObject object, ValueDescriptor v) {

   115         ValueType valueType = typeOfValues.get(v);

   116         if (valueType == null) {

   117             valueType = determineValueType(v);

   118             typeOfValues.put(v, valueType);

   119         }

   120         switch (valueType) {

   121         case TIMESPAN:

   122             return object.getDuration(v.getName());

   123         case TIMESTAMP:

   124             return RecordingInternals.INSTANCE.getOffsetDataTime(object, v.getName());

   125         default:

   126             return object.getValue(v.getName());

   127         }

   128     }

   129     // It's expensive t check

   130     private ValueType determineValueType(ValueDescriptor v) {

   131         if (v.getAnnotation(Timespan.class) != null) {

   132             return ValueType.TIMESPAN;

   133         }

   134         if (v.getAnnotation(Timestamp.class) != null) {

   135             return ValueType.TIMESTAMP;

   136         }

   137         return ValueType.OTHER;

   138     }

   139 }