| /* |
| * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.internal; |
| |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_CONSTANT_POOL; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_DIMENSION; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_ID; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_NAME; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_SIMPLE_TYPE; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_SUPER_TYPE; |
| import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_TYPE_ID; |
| import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_ANNOTATION; |
| import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_FIELD; |
| import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_SETTING; |
| import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_TYPE; |
| |
| import java.io.DataInput; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import jdk.jfr.AnnotationElement; |
| import jdk.jfr.SettingDescriptor; |
| import jdk.jfr.ValueDescriptor; |
| import jdk.jfr.internal.MetadataDescriptor.Element; |
| |
| /** |
| * Parses metadata. |
| * |
| */ |
| final class MetadataReader { |
| |
| private final DataInput input; |
| private final List<String> pool; |
| private final MetadataDescriptor descriptor; |
| private final Map<Long, Type> types = new HashMap<>(); |
| |
| public MetadataReader(DataInput input) throws IOException { |
| this.input = input; |
| int size = input.readInt(); |
| this.pool = new ArrayList<>(size); |
| for (int i = 0; i < size; i++) { |
| this.pool.add(input.readUTF()); |
| } |
| descriptor = new MetadataDescriptor(); |
| Element root = createElement(); |
| Element metadata = root.elements("metadata").get(0); |
| declareTypes(metadata); |
| defineTypes(metadata); |
| annotateTypes(metadata); |
| buildEvenTypes(); |
| Element time = root.elements("region").get(0); |
| descriptor.gmtOffset = time.attribute(MetadataDescriptor.ATTRIBUTE_GMT_OFFSET, 1); |
| descriptor.locale = time.attribute(MetadataDescriptor.ATTRIBUTE_LOCALE, ""); |
| descriptor.root = root; |
| if (LogTag.JFR_SYSTEM_PARSER.shouldLog(LogLevel.TRACE.level)) { |
| List<Type> ts = new ArrayList<>(types.values()); |
| Collections.sort(ts, (x,y) -> x.getName().compareTo(y.getName())); |
| for (Type t : ts) { |
| t.log("Found", LogTag.JFR_SYSTEM_PARSER, LogLevel.TRACE); |
| } |
| } |
| } |
| |
| private String readString() throws IOException { |
| return pool.get(readInt()); |
| } |
| |
| private int readInt() throws IOException { |
| return input.readInt(); |
| } |
| |
| private Element createElement() throws IOException { |
| String name = readString(); |
| Element e = new Element(name); |
| int attributeCount = readInt(); |
| for (int i = 0; i < attributeCount; i++) { |
| e.addAttribute(readString(), readString()); |
| } |
| int childrenCount = readInt(); |
| for (int i = 0; i < childrenCount; i++) { |
| e.add(createElement()); |
| } |
| return e; |
| } |
| |
| private void annotateTypes(Element metadata) throws IOException { |
| for (Element typeElement : metadata.elements(ELEMENT_TYPE)) { |
| Type type = getType(ATTRIBUTE_ID, typeElement); |
| ArrayList<AnnotationElement> aes = new ArrayList<>(); |
| for (Element annotationElement : typeElement.elements(ELEMENT_ANNOTATION)) { |
| aes.add(makeAnnotation(annotationElement)); |
| } |
| aes.trimToSize(); |
| type.setAnnotations(aes); |
| |
| int index = 0; |
| if (type instanceof PlatformEventType) { |
| List<SettingDescriptor> settings = ((PlatformEventType) type).getAllSettings(); |
| for (Element settingElement : typeElement.elements(ELEMENT_SETTING)) { |
| ArrayList<AnnotationElement> annotations = new ArrayList<>(); |
| for (Element annotationElement : settingElement.elements(ELEMENT_ANNOTATION)) { |
| annotations.add(makeAnnotation(annotationElement)); |
| } |
| annotations.trimToSize(); |
| PrivateAccess.getInstance().setAnnotations(settings.get(index), annotations); |
| index++; |
| } |
| } |
| index = 0; |
| List<ValueDescriptor> fields = type.getFields(); |
| for (Element fieldElement : typeElement.elements(ELEMENT_FIELD)) { |
| ArrayList<AnnotationElement> annotations = new ArrayList<>(); |
| for (Element annotationElement : fieldElement.elements(ELEMENT_ANNOTATION)) { |
| annotations.add(makeAnnotation(annotationElement)); |
| } |
| annotations.trimToSize(); |
| PrivateAccess.getInstance().setAnnotations(fields.get(index), annotations); |
| index++; |
| } |
| } |
| } |
| |
| private AnnotationElement makeAnnotation(Element annotationElement) throws IOException { |
| Type annotationType = getType(ATTRIBUTE_TYPE_ID, annotationElement); |
| List<Object> values = new ArrayList<>(); |
| for (ValueDescriptor v : annotationType.getFields()) { |
| if (v.isArray()) { |
| List<Object> list = new ArrayList<>(); |
| int index = 0; |
| while (true) { |
| String text = annotationElement.attribute(v.getName() + "-" + index); |
| if (text == null) { |
| break; |
| } |
| list.add(objectify(v.getTypeName(), text)); |
| index++; |
| } |
| Object object = Utils.makePrimitiveArray(v.getTypeName(), list); |
| if (object == null) { |
| throw new IOException("Unsupported type " + list + " in array"); |
| } |
| values.add(object); |
| } else { |
| String text = annotationElement.attribute(v.getName()); |
| values.add(objectify(v.getTypeName(), text)); |
| } |
| } |
| return PrivateAccess.getInstance().newAnnotation(annotationType, values, false); |
| } |
| |
| private Object objectify(String typeName, String text) throws IOException { |
| try { |
| switch (typeName) { |
| case "int": |
| return Integer.valueOf(text); |
| case "long": |
| return Long.valueOf(text); |
| case "double": |
| return Double.valueOf(text); |
| case "float": |
| return Float.valueOf(text); |
| case "short": |
| return Short.valueOf(text); |
| case "char": |
| if (text.length() != 1) { |
| throw new IOException("Unexpected size of char"); |
| } |
| return text.charAt(0); |
| case "byte": |
| return Byte.valueOf(text); |
| case "boolean": |
| return Boolean.valueOf(text); |
| case "java.lang.String": |
| return text; |
| } |
| } catch (IllegalArgumentException iae) { |
| throw new IOException("Could not parse text representation of " + typeName); |
| } |
| throw new IOException("Unsupported type for annotation " + typeName); |
| } |
| |
| private Type getType(String attribute, Element element) { |
| long id = element.longValue(attribute); |
| Type type = types.get(id); |
| if (type == null) { |
| String name = element.attribute("type"); |
| throw new IllegalStateException("Type '" + id + "' is not defined for " + name); |
| } |
| return type; |
| } |
| |
| private void buildEvenTypes() { |
| for (Type type : descriptor.types) { |
| if (type instanceof PlatformEventType) { |
| descriptor.eventTypes.add(PrivateAccess.getInstance().newEventType((PlatformEventType) type)); |
| } |
| } |
| } |
| |
| private void defineTypes(Element metadata) { |
| for (Element typeElement : metadata.elements(ELEMENT_TYPE)) { |
| long id = typeElement.attribute(ATTRIBUTE_ID, -1); |
| Type t = types.get(id); |
| for (Element fieldElement : typeElement.elements(ELEMENT_SETTING)) { |
| String name = fieldElement.attribute(ATTRIBUTE_NAME); |
| String defaultValue = fieldElement.attribute(ATTRIBUTE_NAME); |
| Type settingType = getType(ATTRIBUTE_TYPE_ID, fieldElement); |
| PlatformEventType eventType = (PlatformEventType) t; |
| eventType.add(PrivateAccess.getInstance().newSettingDescriptor(settingType, name, defaultValue, new ArrayList<>(2))); |
| } |
| for (Element fieldElement : typeElement.elements(ELEMENT_FIELD)) { |
| String name = fieldElement.attribute(ATTRIBUTE_NAME); |
| Type fieldType = getType(ATTRIBUTE_TYPE_ID, fieldElement); |
| long dimension = fieldElement.attribute(ATTRIBUTE_DIMENSION, 0); |
| boolean constantPool = fieldElement.attribute(ATTRIBUTE_CONSTANT_POOL) != null; |
| // Add annotation later, because they may refer to undefined |
| // types at this stage |
| t.add(PrivateAccess.getInstance().newValueDescriptor(name, fieldType, new ArrayList<>(), (int) dimension, constantPool, null)); |
| } |
| t.trimFields(); |
| } |
| } |
| |
| private void declareTypes(Element metadata) { |
| for (Element typeElement : metadata.elements(ELEMENT_TYPE)) { |
| String typeName = typeElement.attribute(ATTRIBUTE_NAME); |
| String superType = typeElement.attribute(ATTRIBUTE_SUPER_TYPE); |
| boolean simpleType = typeElement.attribute(ATTRIBUTE_SIMPLE_TYPE) != null; |
| long id = typeElement.attribute(ATTRIBUTE_ID, -1); |
| Type t; |
| if (Type.SUPER_TYPE_EVENT.equals(superType)) { |
| t = new PlatformEventType(typeName, id, false, false); |
| } else { |
| t = new Type(typeName, superType, id, false, simpleType); |
| } |
| types.put(id, t); |
| descriptor.types.add(t); |
| } |
| } |
| |
| public MetadataDescriptor getDescriptor() { |
| return descriptor; |
| } |
| } |