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* Copyright (c) 2016, 2019, 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.
*
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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;
import jdk.jfr.internal.consumer.RecordingInput;
import jdk.jfr.internal.consumer.StringParser;
/**
* 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(RecordingInput input) throws IOException {
this.input = input;
int size = input.readInt();
this.pool = new ArrayList<>(size);
StringParser p = new StringParser(null, false);
for (int i = 0; i < size; i++) {
this.pool.add((String) p.parse(input));
}
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 (Logger.shouldLog(LogTag.JFR_SYSTEM_PARSER, LogLevel.TRACE)) {
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);
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