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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;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_CONSTANT_POOL;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_DIMENSION;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_ID;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_NAME;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_SIMPLE_TYPE;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_SUPER_TYPE;
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import static jdk.jfr.internal.MetadataDescriptor.ATTRIBUTE_TYPE_ID;
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import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_ANNOTATION;
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import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_FIELD;
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import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_SETTING;
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import static jdk.jfr.internal.MetadataDescriptor.ELEMENT_TYPE;
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import java.io.DataInput;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import jdk.jfr.AnnotationElement;
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import jdk.jfr.SettingDescriptor;
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import jdk.jfr.ValueDescriptor;
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import jdk.jfr.internal.MetadataDescriptor.Element;
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import jdk.jfr.internal.consumer.RecordingInput;
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import jdk.jfr.internal.consumer.StringParser;
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/**
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* Parses metadata.
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*
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*/
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final class MetadataReader {
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private final DataInput input;
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private final List<String> pool;
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private final MetadataDescriptor descriptor;
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private final Map<Long, Type> types = new HashMap<>();
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public MetadataReader(RecordingInput input) throws IOException {
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this.input = input;
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int size = input.readInt();
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this.pool = new ArrayList<>(size);
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StringParser p = new StringParser(null, false);
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for (int i = 0; i < size; i++) {
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this.pool.add((String) p.parse(input));
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}
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descriptor = new MetadataDescriptor();
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Element root = createElement();
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Element metadata = root.elements("metadata").get(0);
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declareTypes(metadata);
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defineTypes(metadata);
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annotateTypes(metadata);
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buildEvenTypes();
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Element time = root.elements("region").get(0);
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descriptor.gmtOffset = time.attribute(MetadataDescriptor.ATTRIBUTE_GMT_OFFSET, 1);
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descriptor.locale = time.attribute(MetadataDescriptor.ATTRIBUTE_LOCALE, "");
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descriptor.root = root;
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if (Logger.shouldLog(LogTag.JFR_SYSTEM_PARSER, LogLevel.TRACE)) {
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List<Type> ts = new ArrayList<>(types.values());
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Collections.sort(ts, (x,y) -> x.getName().compareTo(y.getName()));
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for (Type t : ts) {
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t.log("Found", LogTag.JFR_SYSTEM_PARSER, LogLevel.TRACE);
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}
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}
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}
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private String readString() throws IOException {
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return pool.get(readInt());
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}
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private int readInt() throws IOException {
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return input.readInt();
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}
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private Element createElement() throws IOException {
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String name = readString();
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Element e = new Element(name);
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int attributeCount = readInt();
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for (int i = 0; i < attributeCount; i++) {
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e.addAttribute(readString(), readString());
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}
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int childrenCount = readInt();
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for (int i = 0; i < childrenCount; i++) {
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e.add(createElement());
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}
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return e;
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}
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private void annotateTypes(Element metadata) throws IOException {
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for (Element typeElement : metadata.elements(ELEMENT_TYPE)) {
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Type type = getType(ATTRIBUTE_ID, typeElement);
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ArrayList<AnnotationElement> aes = new ArrayList<>();
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for (Element annotationElement : typeElement.elements(ELEMENT_ANNOTATION)) {
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aes.add(makeAnnotation(annotationElement));
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}
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aes.trimToSize();
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type.setAnnotations(aes);
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int index = 0;
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if (type instanceof PlatformEventType) {
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List<SettingDescriptor> settings = ((PlatformEventType) type).getAllSettings();
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for (Element settingElement : typeElement.elements(ELEMENT_SETTING)) {
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ArrayList<AnnotationElement> annotations = new ArrayList<>();
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for (Element annotationElement : settingElement.elements(ELEMENT_ANNOTATION)) {
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annotations.add(makeAnnotation(annotationElement));
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}
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annotations.trimToSize();
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PrivateAccess.getInstance().setAnnotations(settings.get(index), annotations);
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index++;
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}
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}
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index = 0;
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List<ValueDescriptor> fields = type.getFields();
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for (Element fieldElement : typeElement.elements(ELEMENT_FIELD)) {
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ArrayList<AnnotationElement> annotations = new ArrayList<>();
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for (Element annotationElement : fieldElement.elements(ELEMENT_ANNOTATION)) {
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annotations.add(makeAnnotation(annotationElement));
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}
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annotations.trimToSize();
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PrivateAccess.getInstance().setAnnotations(fields.get(index), annotations);
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index++;
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}
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}
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}
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private AnnotationElement makeAnnotation(Element annotationElement) throws IOException {
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Type annotationType = getType(ATTRIBUTE_TYPE_ID, annotationElement);
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List<Object> values = new ArrayList<>();
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for (ValueDescriptor v : annotationType.getFields()) {
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if (v.isArray()) {
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List<Object> list = new ArrayList<>();
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int index = 0;
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while (true) {
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String text = annotationElement.attribute(v.getName() + "-" + index);
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if (text == null) {
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break;
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}
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list.add(objectify(v.getTypeName(), text));
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index++;
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}
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Object object = Utils.makePrimitiveArray(v.getTypeName(), list);
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if (object == null) {
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throw new IOException("Unsupported type " + list + " in array");
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}
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values.add(object);
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} else {
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String text = annotationElement.attribute(v.getName());
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values.add(objectify(v.getTypeName(), text));
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}
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}
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return PrivateAccess.getInstance().newAnnotation(annotationType, values, false);
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}
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private Object objectify(String typeName, String text) throws IOException {
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try {
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switch (typeName) {
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case "int":
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return Integer.valueOf(text);
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case "long":
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return Long.valueOf(text);
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case "double":
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return Double.valueOf(text);
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case "float":
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return Float.valueOf(text);
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case "short":
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return Short.valueOf(text);
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case "char":
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if (text.length() != 1) {
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throw new IOException("Unexpected size of char");
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}
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return text.charAt(0);
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case "byte":
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return Byte.valueOf(text);
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case "boolean":
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return Boolean.valueOf(text);
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case "java.lang.String":
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return text;
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}
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} catch (IllegalArgumentException iae) {
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throw new IOException("Could not parse text representation of " + typeName);
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}
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throw new IOException("Unsupported type for annotation " + typeName);
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}
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private Type getType(String attribute, Element element) {
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long id = element.longValue(attribute);
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Type type = types.get(id);
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if (type == null) {
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String name = element.attribute("type");
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throw new IllegalStateException("Type '" + id + "' is not defined for " + name);
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}
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return type;
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}
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private void buildEvenTypes() {
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for (Type type : descriptor.types) {
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if (type instanceof PlatformEventType) {
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descriptor.eventTypes.add(PrivateAccess.getInstance().newEventType((PlatformEventType) type));
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}
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}
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}
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private void defineTypes(Element metadata) {
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for (Element typeElement : metadata.elements(ELEMENT_TYPE)) {
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long id = typeElement.attribute(ATTRIBUTE_ID, -1);
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Type t = types.get(id);
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for (Element fieldElement : typeElement.elements(ELEMENT_SETTING)) {
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String name = fieldElement.attribute(ATTRIBUTE_NAME);
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String defaultValue = fieldElement.attribute(ATTRIBUTE_NAME);
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Type settingType = getType(ATTRIBUTE_TYPE_ID, fieldElement);
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PlatformEventType eventType = (PlatformEventType) t;
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eventType.add(PrivateAccess.getInstance().newSettingDescriptor(settingType, name, defaultValue, new ArrayList<>(2)));
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}
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for (Element fieldElement : typeElement.elements(ELEMENT_FIELD)) {
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String name = fieldElement.attribute(ATTRIBUTE_NAME);
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Type fieldType = getType(ATTRIBUTE_TYPE_ID, fieldElement);
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long dimension = fieldElement.attribute(ATTRIBUTE_DIMENSION, 0);
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boolean constantPool = fieldElement.attribute(ATTRIBUTE_CONSTANT_POOL) != null;
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// Add annotation later, because they may refer to undefined
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// types at this stage
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t.add(PrivateAccess.getInstance().newValueDescriptor(name, fieldType, new ArrayList<>(), (int) dimension, constantPool, null));
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}
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t.trimFields();
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}
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}
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private void declareTypes(Element metadata) {
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for (Element typeElement : metadata.elements(ELEMENT_TYPE)) {
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String typeName = typeElement.attribute(ATTRIBUTE_NAME);
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String superType = typeElement.attribute(ATTRIBUTE_SUPER_TYPE);
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boolean simpleType = typeElement.attribute(ATTRIBUTE_SIMPLE_TYPE) != null;
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long id = typeElement.attribute(ATTRIBUTE_ID, -1);
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Type t;
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if (Type.SUPER_TYPE_EVENT.equals(superType)) {
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t = new PlatformEventType(typeName, id, false, false);
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} else {
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t = new Type(typeName, superType, id, false, simpleType);
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}
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types.put(id, t);
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descriptor.types.add(t);
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}
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}
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public MetadataDescriptor getDescriptor() {
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return descriptor;
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}
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}
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