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.settings; 27 28 import java.util.Objects; 29 import java.util.Set; 30 31 import jdk.jfr.Description; 32 import jdk.jfr.Label; 33 import jdk.jfr.MetadataDefinition; 34 import jdk.jfr.Name; 35 import jdk.jfr.internal.PlatformEventType; 36 import jdk.jfr.internal.Control; 37 import jdk.jfr.internal.Type; 38 import jdk.jfr.internal.Utils; 39 40 @MetadataDefinition 41 @Label("Period") 42 @Description("Record event at interval") 43 @Name(Type.SETTINGS_PREFIX + "Period") 44 public final class PeriodSetting extends Control { 45 private static final long typeId = Type.getTypeId(PeriodSetting.class); 46 47 public static final String EVERY_CHUNK = "everyChunk"; 48 public static final String BEGIN_CHUNK = "beginChunk"; 49 public static final String END_CHUNK = "endChunk"; 50 public static final String NAME = "period"; 51 private final PlatformEventType eventType; 52 private String value = EVERY_CHUNK; 53 54 public PeriodSetting(PlatformEventType eventType, String defaultValue) { 55 super(defaultValue); 56 this.eventType = Objects.requireNonNull(eventType); 57 } 58 59 @Override 60 public String combine(Set<String> values) { 61 62 boolean beginChunk = false; 63 boolean endChunk = false; 64 Long min = null; 65 String text = null; 66 for (String value : values) { 67 switch (value) { 68 case EVERY_CHUNK: 69 beginChunk = true; 70 endChunk = true; 71 break; 72 case BEGIN_CHUNK: 73 beginChunk = true; 74 break; 75 case END_CHUNK: 76 endChunk = true; 77 break; 78 default: 79 long l = Utils.parseTimespanWithInfinity(value); 80 // Always accept first specified value 81 if (min == null) { 82 text = value; 83 min = l; 84 } else { 85 if (l < min) { 86 text = value; 87 min = l; 88 } 89 } 90 } 91 } 92 // A specified interval trumps *_CHUNK 93 if (min != null) { 94 return text; 95 } 96 if (beginChunk && !endChunk) { 97 return BEGIN_CHUNK; 98 } 99 if (!beginChunk && endChunk) { 100 return END_CHUNK; 101 } 102 return EVERY_CHUNK; // also default 103 } 104 105 @Override 106 public void setValue(String value) { 107 switch (value) { 108 case EVERY_CHUNK: 109 eventType.setPeriod(0, true, true); 110 break; 111 case BEGIN_CHUNK: 112 eventType.setPeriod(0, true, false); 113 break; 114 case END_CHUNK: 115 eventType.setPeriod(0, false, true); 116 break; 117 default: 118 long nanos = Utils.parseTimespanWithInfinity(value); 119 if (nanos != Long.MAX_VALUE) { 120 eventType.setPeriod(nanos / 1_000_000, false, false); 121 } else { 122 eventType.setPeriod(Long.MAX_VALUE, false, false); 123 } 124 } 125 this.value = value; 126 } 127 128 @Override 129 public String getValue() { 130 return value; 131 } 132 133 public static boolean isType(long typeId) { 134 return PeriodSetting.typeId == typeId; 135 } 136 }