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("com.oracle.jfr.settings.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 long min = Long.MAX_VALUE; 62 boolean beginChunk = false; 63 boolean endChunk = false; 64 String text = EVERY_CHUNK; 65 for (String value : values) { 66 switch (value) { 67 case EVERY_CHUNK: 68 beginChunk = true; 69 endChunk = true; 70 break; 71 case BEGIN_CHUNK: 72 beginChunk = true; 73 break; 74 case END_CHUNK: 75 endChunk = true; 76 break; 77 default: 78 long l = Utils.parseTimespan(value); 79 if (l < min) { 80 text = value; 81 min = l; 82 } 83 } 84 } 85 if (min != Long.MAX_VALUE) { 86 return text; 87 } 88 if (beginChunk && !endChunk) { 89 return BEGIN_CHUNK; 90 } 91 if (!beginChunk && endChunk) { 92 return END_CHUNK; 93 } 94 return text; 95 } 96 97 @Override 98 public void setValue(String value) { 99 switch (value) { 100 case EVERY_CHUNK: 101 eventType.setPeriod(0, true, true); 102 break; 103 case BEGIN_CHUNK: 104 eventType.setPeriod(0, true, false); 105 break; 106 case END_CHUNK: 107 eventType.setPeriod(0, false, true); 108 break; 109 default: 110 eventType.setPeriod(Utils.parseTimespan(value) / 1_000_000, false, false); 111 } 112 this.value = value; 113 } 114 115 @Override 116 public String getValue() { 117 return value; 118 } 119 120 public static boolean isType(long typeId) { 121 return PeriodSetting.typeId == typeId; 122 } 123 }