--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/MetadataDescriptor.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,273 @@
+/*
+ * 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 java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Locale;
+import java.util.TimeZone;
+
+import jdk.jfr.EventType;
+
+/**
+ * Metadata about a chunk
+ */
+public final class MetadataDescriptor {
+
+ static final class Attribute {
+ final String name;
+ final String value;
+
+ private Attribute(String name, String value) {
+ this.name = name;
+ this.value = value;
+ }
+ }
+
+ static final class Element {
+ final String name;
+ final List<Element> elements = new ArrayList<>();
+ final List<Attribute> attributes = new ArrayList<>();
+
+ Element(String name) {
+ this.name = name;
+ }
+
+ long longValue(String name) {
+ String v = attribute(name);
+ if (v != null)
+ return Long.parseLong(v);
+ else
+ throw new IllegalArgumentException(name);
+ }
+
+ String attribute(String name) {
+ for (Attribute a : attributes) {
+ if (a.name.equals(name)) {
+ return a.value;
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder sb = new StringBuilder();
+ try {
+ prettyPrintXML(sb, "", this);
+ } catch (IOException e) {
+ // should not happen
+ }
+ return sb.toString();
+ }
+
+ long attribute(String name, long defaultValue) {
+ String text = attribute(name);
+ if (text == null) {
+ return defaultValue;
+ }
+ return Long.parseLong(text);
+ }
+
+ String attribute(String name, String defaultValue) {
+ String text = attribute(name);
+ if (text == null) {
+ return defaultValue;
+ }
+ return text;
+ }
+
+ List<Element> elements(String... names) {
+ List<Element> filteredElements = new ArrayList<>();
+ for (String name : names) {
+ for (Element e : elements) {
+ if (e.name.equals(name)) {
+ filteredElements.add(e);
+ }
+ }
+ }
+ return filteredElements;
+ }
+
+ void add(Element element) {
+ elements.add(element);
+ }
+
+ void addAttribute(String name, Object value) {
+ attributes.add(new Attribute(name, String.valueOf(value)));
+ }
+
+ Element newChild(String name) {
+ Element e = new Element(name);
+ elements.add(e);
+ return e;
+ }
+
+ public void addArrayAttribute(Element element, String name, Object value) {
+ String typeName = value.getClass().getComponentType().getName();
+ switch (typeName) {
+ case "int":
+ int[] ints = (int[]) value;
+ for (int i = 0; i < ints.length; i++) {
+ addAttribute(name + "-" + i , ints[i]);
+ }
+ break;
+ case "long":
+ long[] longs = (long[]) value;
+ for (int i = 0; i < longs.length; i++) {
+ addAttribute(name + "-" + i , longs[i]);
+ }
+ break;
+ case "float":
+ float[] floats = (float[]) value;
+ for (int i = 0; i < floats.length; i++) {
+ addAttribute(name + "-" + i , floats[i]);
+ }
+ break;
+
+ case "double":
+ double[] doubles = (double[]) value;
+ for (int i = 0; i < doubles.length; i++) {
+ addAttribute(name + "-" + i , doubles[i]);
+ }
+ break;
+ case "short":
+ short[] shorts = (short[]) value;
+ for (int i = 0; i < shorts.length; i++) {
+ addAttribute(name + "-" + i , shorts[i]);
+ }
+ break;
+ case "char":
+ char[] chars = (char[]) value;
+ for (int i = 0; i < chars.length; i++) {
+ addAttribute(name + "-" + i , chars[i]);
+ }
+ break;
+ case "byte":
+ byte[] bytes = (byte[]) value;
+ for (int i = 0; i < bytes.length; i++) {
+ addAttribute(name + "-" + i , bytes[i]);
+ }
+ break;
+ case "boolean":
+ boolean[] booleans = (boolean[]) value;
+ for (int i = 0; i < booleans.length; i++) {
+ addAttribute(name + "-" + i , booleans[i]);
+ }
+ break;
+ case "java.lang.String":
+ String[] strings = (String[]) value;
+ for (int i = 0; i < strings.length; i++) {
+ addAttribute(name + "-" + i , strings[i]);
+ }
+ break;
+ default:
+ throw new InternalError("Array type of " + typeName + " is not supported");
+ }
+ }
+ }
+
+ static final String ATTRIBUTE_ID = "id";
+ static final String ATTRIBUTE_SIMPLE_TYPE = "simpleType";
+ static final String ATTRIBUTE_GMT_OFFSET = "gmtOffset";
+ static final String ATTRIBUTE_LOCALE = "locale";
+ static final String ELEMENT_TYPE = "class";
+ static final String ELEMENT_SETTING = "setting";
+ static final String ELEMENT_ANNOTATION = "annotation";
+ static final String ELEMENT_FIELD = "field";
+ static final String ATTRIBUTE_SUPER_TYPE = "superType";
+ static final String ATTRIBUTE_TYPE_ID = "class";
+ static final String ATTRIBUTE_DIMENSION = "dimension";
+ static final String ATTRIBUTE_NAME = "name";
+ static final String ATTRIBUTE_CONSTANT_POOL = "constantPool";
+ static final String ATTRIBUTE_DEFAULT_VALUE = "defaultValue";
+
+ final List<EventType> eventTypes = new ArrayList<>();
+ final Collection<Type> types = new ArrayList<>();
+ long gmtOffset;
+ String locale;
+ Element root;
+
+ // package private
+ MetadataDescriptor() {
+ }
+
+ private static void prettyPrintXML(Appendable sb, String indent, Element e) throws IOException {
+ sb.append(indent + "<" + e.name);
+ for (Attribute a : e.attributes) {
+ sb.append(" ").append(a.name).append("=\"").append(a.value).append("\"");
+ }
+ if (e.elements.size() == 0) {
+ sb.append("/");
+ }
+ sb.append(">\n");
+ for (Element child : e.elements) {
+ prettyPrintXML(sb, indent + " ", child);
+ }
+ if (e.elements.size() != 0) {
+ sb.append(indent).append("</").append(e.name).append(">\n");
+ }
+ }
+
+ public Collection<Type> getTypes() {
+ return types;
+ }
+
+ public List<EventType> getEventTypes() {
+ return eventTypes;
+ }
+
+ public int getGMTOffset() {
+ return (int) gmtOffset;
+ }
+
+ public String getLocale() {
+ return locale;
+ }
+
+ public static MetadataDescriptor read(DataInput input) throws IOException {
+ MetadataReader r = new MetadataReader(input);
+ return r.getDescriptor();
+ }
+
+ static void write(List<Type> types, DataOutput output) throws IOException {
+ MetadataDescriptor m = new MetadataDescriptor();
+ m.locale = Locale.getDefault().toString();
+ m.gmtOffset = TimeZone.getDefault().getRawOffset();
+ m.types.addAll(types);
+ MetadataWriter w = new MetadataWriter(m);
+ w.writeBinary(output);
+ }
+
+ @Override
+ public String toString() {
+ return root.toString();
+ }
+}