--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/MetadataReader.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,271 @@
+/*
+ * 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;
+ }
+}