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.consumer; 27 28 import java.util.List; 29 30 import jdk.jfr.ValueDescriptor; 31 import jdk.jfr.internal.Type; 32 33 /** 34 * Abstract factory for creating specialized types 35 */ 36 abstract class ObjectFactory<T> { 37 38 final static String TYPE_PREFIX_VERSION_1 = "com.oracle.jfr.types."; 39 final static String TYPE_PREFIX_VERSION_2 = Type.TYPES_PREFIX; 40 final static String STACK_FRAME_VERSION_1 = TYPE_PREFIX_VERSION_1 + "StackFrame"; 41 final static String STACK_FRAME_VERSION_2 = TYPE_PREFIX_VERSION_2 + "StackFrame"; 42 43 public static ObjectFactory<?> create(Type type, TimeConverter timeConverter) { 44 switch (type.getName()) { 45 case "java.lang.Thread": 46 return RecordedThread.createFactory(type, timeConverter); 47 case TYPE_PREFIX_VERSION_1 + "StackFrame": 48 case TYPE_PREFIX_VERSION_2 + "StackFrame": 49 return RecordedFrame.createFactory(type, timeConverter); 50 case TYPE_PREFIX_VERSION_1 + "Method": 51 case TYPE_PREFIX_VERSION_2 + "Method": 52 return RecordedMethod.createFactory(type, timeConverter); 53 case TYPE_PREFIX_VERSION_1 + "ThreadGroup": 54 case TYPE_PREFIX_VERSION_2 + "ThreadGroup": 55 return RecordedThreadGroup.createFactory(type, timeConverter); 56 case TYPE_PREFIX_VERSION_1 + "StackTrace": 57 case TYPE_PREFIX_VERSION_2 + "StackTrace": 58 return RecordedStackTrace.createFactory(type, timeConverter); 59 case TYPE_PREFIX_VERSION_1 + "ClassLoader": 60 case TYPE_PREFIX_VERSION_2 + "ClassLoader": 61 return RecordedClassLoader.createFactory(type, timeConverter); 62 case "java.lang.Class": 63 return RecordedClass.createFactory(type, timeConverter); 64 } 65 return null; 66 } 67 68 private final List<ValueDescriptor> valueDescriptors; 69 70 ObjectFactory(Type type) { 71 this.valueDescriptors = type.getFields(); 72 } 73 74 T createObject(long id, Object value) { 75 if (value == null) { 76 return null; 77 } 78 if (value instanceof Object[]) { 79 return createTyped(valueDescriptors, id, (Object[]) value); 80 } 81 throw new InternalError("Object factory must have struct type"); 82 } 83 84 abstract T createTyped(List<ValueDescriptor> valueDescriptors, long id, Object[] values); 85 }