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/*
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.internal.consumer;
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import jdk.jfr.consumer.RecordedClass;
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import jdk.jfr.consumer.RecordedClassLoader;
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import jdk.jfr.consumer.RecordedFrame;
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import jdk.jfr.consumer.RecordedMethod;
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import jdk.jfr.consumer.RecordedStackTrace;
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import jdk.jfr.consumer.RecordedThread;
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import jdk.jfr.consumer.RecordedThreadGroup;
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import jdk.jfr.internal.Type;
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/**
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* Abstract factory for creating specialized types
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*/
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public abstract class ObjectFactory<T> {
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private static final JdkJfrConsumer PRIVATE_ACCESS = JdkJfrConsumer.instance();
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private final static String TYPE_PREFIX_VERSION_1 = "com.oracle.jfr.types.";
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private final static String TYPE_PREFIX_VERSION_2 = Type.TYPES_PREFIX;
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public final static String STACK_FRAME_VERSION_1 = TYPE_PREFIX_VERSION_1 + "StackFrame";
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public final static String STACK_FRAME_VERSION_2 = TYPE_PREFIX_VERSION_2 + "StackFrame";
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static ObjectFactory<?> create(Type type, TimeConverter timeConverter) {
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switch (type.getName()) {
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case "java.lang.Thread":
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return createThreadFactory(type, timeConverter);
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case TYPE_PREFIX_VERSION_1 + "StackFrame":
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case TYPE_PREFIX_VERSION_2 + "StackFrame":
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return createFrameFactory(type, timeConverter);
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case TYPE_PREFIX_VERSION_1 + "Method":
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case TYPE_PREFIX_VERSION_2 + "Method":
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return createMethodFactory(type, timeConverter);
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case TYPE_PREFIX_VERSION_1 + "ThreadGroup":
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case TYPE_PREFIX_VERSION_2 + "ThreadGroup":
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return createdThreadGroupFactory(type, timeConverter);
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case TYPE_PREFIX_VERSION_1 + "StackTrace":
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case TYPE_PREFIX_VERSION_2 + "StackTrace":
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return createStackTraceFactory(type, timeConverter);
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case TYPE_PREFIX_VERSION_1 + "ClassLoader":
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case TYPE_PREFIX_VERSION_2 + "ClassLoader":
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return createClassLoaderFactory(type, timeConverter);
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case "java.lang.Class":
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return createClassFactory(type, timeConverter);
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}
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return null;
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}
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private static ObjectFactory<RecordedClass> createClassFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedClass>(type, timeConverter) {
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@Override
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RecordedClass createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedClass(objectContext, id, values);
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}
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};
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}
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private static ObjectFactory<?> createClassLoaderFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedClassLoader>(type, timeConverter) {
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@Override
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RecordedClassLoader createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedClassLoader(objectContext, id, values);
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}
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};
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}
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private static ObjectFactory<RecordedStackTrace> createStackTraceFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedStackTrace>(type, timeConverter) {
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@Override
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RecordedStackTrace createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedStackTrace(objectContext, values);
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}
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};
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}
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private static ObjectFactory<RecordedThreadGroup> createdThreadGroupFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedThreadGroup>(type, timeConverter) {
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@Override
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RecordedThreadGroup createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedThreadGroup(objectContext, values);
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}
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};
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}
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private static ObjectFactory<RecordedMethod> createMethodFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedMethod>(type, timeConverter) {
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@Override
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RecordedMethod createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedMethod(objectContext, values);
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}
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};
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}
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private static ObjectFactory<RecordedFrame> createFrameFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedFrame>(type, timeConverter) {
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@Override
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RecordedFrame createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedFrame(objectContext, values);
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}
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};
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}
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private static ObjectFactory<RecordedThread> createThreadFactory(Type type, TimeConverter timeConverter) {
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return new ObjectFactory<RecordedThread>(type, timeConverter) {
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@Override
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RecordedThread createTyped(ObjectContext objectContext, long id, Object[] values) {
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return PRIVATE_ACCESS.newRecordedThread(objectContext, id, values);
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}
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};
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}
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private final ObjectContext objectContext;
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private ObjectFactory(Type type, TimeConverter timeConverter) {
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this.objectContext = new ObjectContext(null, type.getFields(), timeConverter);
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}
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T createObject(long id, Object value) {
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if (value == null) {
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return null;
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}
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if (value instanceof Object[]) {
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return createTyped(objectContext, id, (Object[]) value);
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}
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throw new InternalError("Object factory must have struct type. Type was " + value.getClass().getName());
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}
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abstract T createTyped(ObjectContext objectContextm, long id, Object[] values);
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}
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