org.xnio.XnioXmlParser Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source
*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.xnio;
import static javax.xml.stream.XMLStreamConstants.*;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Collections;
import org.wildfly.client.config.ClientConfiguration;
import org.wildfly.client.config.ConfigXMLParseException;
import org.wildfly.client.config.ConfigurationXMLStreamReader;
import org.wildfly.common.net.CidrAddress;
/**
* The XNIO XML configuration parser.
*
* @author David M. Lloyd
*/
final class XnioXmlParser {
private static final String NS_XNIO_3_5 = "urn:xnio:3.5";
static XnioWorker parseWorker(Xnio xnio) throws ConfigXMLParseException, IOException {
return parseWorker(xnio, ClientConfiguration.getInstance());
}
static XnioWorker parseWorker(Xnio xnio, ClientConfiguration clientConfiguration) throws ConfigXMLParseException, IOException {
final XnioWorker.Builder builder = xnio.createWorkerBuilder();
if (clientConfiguration == null) {
return null;
}
builder.setDaemon(true);
final ConfigurationXMLStreamReader reader = clientConfiguration.readConfiguration(Collections.singleton(NS_XNIO_3_5));
parseDocument(reader, builder);
return builder.build();
}
private static void parseDocument(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
if (reader.hasNext()) switch (reader.nextTag()) {
case START_ELEMENT: {
checkElementNamespace(reader);
switch (reader.getLocalName()) {
case "worker": {
parseWorkerElement(reader, workerBuilder);
break;
}
default: throw reader.unexpectedElement();
}
break;
}
default: {
throw reader.unexpectedContent();
}
}
}
private static void parseWorkerElement(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireNoAttributes(reader);
int foundBits = 0;
while (reader.hasNext()) {
switch (reader.nextTag()) {
case END_ELEMENT: {
return;
}
case START_ELEMENT: {
checkElementNamespace(reader);
switch (reader.getLocalName()) {
case "daemon-threads": {
if (isSet(foundBits, 0)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 0);
parseDaemonThreads(reader, workerBuilder);
break;
}
case "worker-name": {
if (isSet(foundBits, 1)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 1);
parseWorkerName(reader, workerBuilder);
break;
}
case "pool-size": {
if (isSet(foundBits, 2)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 2);
parsePoolSize(reader, workerBuilder);
break;
}
case "task-keepalive": {
if (isSet(foundBits, 3)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 3);
parseTaskKeepalive(reader, workerBuilder);
break;
}
case "io-threads": {
if (isSet(foundBits, 4)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 4);
parseIoThreads(reader, workerBuilder);
break;
}
case "stack-size": {
if (isSet(foundBits, 5)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 5);
parseStackSize(reader, workerBuilder);
break;
}
case "outbound-bind-addresses": {
if (isSet(foundBits, 6)) throw reader.unexpectedElement();
foundBits = setBit(foundBits, 6);
parseOutboundBindAddresses(reader, workerBuilder);
break;
}
default: {
throw reader.unexpectedElement();
}
}
}
}
}
throw reader.unexpectedDocumentEnd();
}
private static void parseDaemonThreads(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "value");
final boolean daemon = reader.getBooleanAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setDaemon(daemon);
return;
}
private static void parseWorkerName(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "value");
String name = reader.getAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setWorkerName(name);
return;
}
private static void parsePoolSize(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "max-threads");
int threadCount = reader.getIntAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setCoreWorkerPoolSize(threadCount);
workerBuilder.setMaxWorkerPoolSize(threadCount);
return;
}
private static void parseTaskKeepalive(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "value");
int duration = reader.getIntAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setWorkerKeepAlive(duration);
return;
}
private static void parseIoThreads(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "value");
int threadCount = reader.getIntAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setWorkerIoThreads(threadCount);
return;
}
private static void parseStackSize(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireSingleAttribute(reader, "value");
long stackSize = reader.getLongAttributeValueResolved(0);
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
workerBuilder.setWorkerStackSize(stackSize);
return;
}
private static void parseOutboundBindAddresses(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
requireNoAttributes(reader);
for (;;) {
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() == START_ELEMENT) {
checkElementNamespace(reader);
if (! reader.getLocalName().equals("bind-address")) {
throw reader.unexpectedElement();
}
parseBindAddress(reader, workerBuilder);
} else {
assert reader.getEventType() == END_ELEMENT;
return;
}
}
}
private static void parseBindAddress(final ConfigurationXMLStreamReader reader, final XnioWorker.Builder workerBuilder) throws ConfigXMLParseException {
final int cnt = reader.getAttributeCount();
InetAddress address = null;
int port = 0;
CidrAddress match = null;
for (int i = 0; i < cnt; i ++) {
checkAttributeNamespace(reader, i);
switch (reader.getAttributeLocalName(i)) {
case "match": {
match = reader.getCidrAddressAttributeValueResolved(i);
break;
}
case "bind-address": {
address = reader.getInetAddressAttributeValueResolved(i);
break;
}
case "bind-port": {
port = reader.getIntAttributeValueResolved(i, 0, 65535);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (match == null) throw reader.missingRequiredAttribute(null, "match");
if (address == null) throw reader.missingRequiredAttribute(null, "bind-address");
workerBuilder.addBindAddressConfiguration(match, new InetSocketAddress(address, port));
if (! reader.hasNext()) throw reader.unexpectedDocumentEnd();
if (reader.nextTag() != END_ELEMENT) throw reader.unexpectedElement();
}
private static void checkElementNamespace(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
if (! reader.getNamespaceURI().equals(NS_XNIO_3_5)) {
throw reader.unexpectedElement();
}
}
private static void checkAttributeNamespace(final ConfigurationXMLStreamReader reader, final int idx) throws ConfigXMLParseException {
final String attributeNamespace = reader.getAttributeNamespace(idx);
if (attributeNamespace != null && ! attributeNamespace.isEmpty()) {
throw reader.unexpectedAttribute(idx);
}
}
private static void requireNoAttributes(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
if (attributeCount > 0) {
throw reader.unexpectedAttribute(0);
}
}
private static void requireSingleAttribute(final ConfigurationXMLStreamReader reader, final String attributeName) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
if (attributeCount < 1) {
throw reader.missingRequiredAttribute("", attributeName);
}
checkAttributeNamespace(reader, 0);
if (! reader.getAttributeLocalName(0).equals(attributeName)) {
throw reader.unexpectedAttribute(0);
}
if (attributeCount > 1) {
throw reader.unexpectedAttribute(1);
}
}
private static boolean isSet(int var, int bit) {
return (var & 1 << bit) != 0;
}
private static int setBit(int var, int bit) {
return var | 1 << bit;
}
}