org.wildfly.httpclient.common.HttpClientXmlParser Maven / Gradle / Ivy
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* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.httpclient.common;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.Collections;
import org.wildfly.client.config.ClientConfiguration;
import org.wildfly.client.config.ConfigXMLParseException;
import org.wildfly.client.config.ConfigurationXMLStreamReader;
/**
* @author Stuart Douglas
*/
final class HttpClientXmlParser {
private static final String NS_EJB_HTTP_CLIENT = "urn:wildfly-http-client:1.0";
static WildflyHttpContext parseHttpContext() throws ConfigXMLParseException, IOException {
final ClientConfiguration clientConfiguration = ClientConfiguration.getInstance();
final WildflyHttpContext.Builder builder = new WildflyHttpContext.Builder();
if (clientConfiguration != null) {
try (final ConfigurationXMLStreamReader streamReader = clientConfiguration.readConfiguration(Collections.singleton(NS_EJB_HTTP_CLIENT))) {
parseDocument(streamReader, builder);
}
}
return builder.build();
}
//for testing
static WildflyHttpContext.Builder parseConfig(URI uri) throws ConfigXMLParseException {
final WildflyHttpContext.Builder builder = new WildflyHttpContext.Builder();
try (final ConfigurationXMLStreamReader streamReader = ClientConfiguration.getInstance(uri).readConfiguration(Collections.singleton(NS_EJB_HTTP_CLIENT))) {
parseDocument(streamReader, builder);
return builder;
}
}
private static void parseDocument(final ConfigurationXMLStreamReader reader, final WildflyHttpContext.Builder builder) throws ConfigXMLParseException {
if (reader.hasNext()) switch (reader.nextTag()) {
case START_ELEMENT: {
switch (reader.getNamespaceURI()) {
case NS_EJB_HTTP_CLIENT:
break;
default:
throw reader.unexpectedElement();
}
switch (reader.getLocalName()) {
case "http-client": {
parseRootElement(reader, builder);
break;
}
default:
throw reader.unexpectedElement();
}
break;
}
default: {
throw reader.unexpectedContent();
}
}
}
private static void parseRootElement(final ConfigurationXMLStreamReader reader, final WildflyHttpContext.Builder builder) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
default: {
throw reader.unexpectedAttribute(i);
}
}
}
while (reader.hasNext()) {
switch (reader.nextTag()) {
case START_ELEMENT: {
switch (reader.getNamespaceURI()) {
case NS_EJB_HTTP_CLIENT:
break;
default:
throw reader.unexpectedElement();
}
switch (reader.getLocalName()) {
case "configs": {
parseConfigsElement(reader, builder);
break;
}
case "defaults": {
parseDefaults(reader, builder);
break;
}
default:
throw reader.unexpectedElement();
}
break;
}
case END_ELEMENT: {
return;
}
}
}
}
private static InetSocketAddress parseBind(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
String address = null;
int port = 0;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "address": {
address = reader.getAttributeValueResolved(i);
break;
}
case "port": {
port = reader.getIntAttributeValueResolved(i);
if (port < 0 || port > 65535) {
throw HttpClientMessages.MESSAGES.portValueOutOfRange(port);
}
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (address == null) {
throw reader.missingRequiredAttribute(null, "address");
}
final InetSocketAddress bindAddress = InetSocketAddress.createUnresolved(address, port);
switch (reader.nextTag()) {
case END_ELEMENT: {
return bindAddress;
}
default: {
throw reader.unexpectedElement();
}
}
}
private static long parseLongElement(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
Long value = null;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "value": {
value = reader.getLongAttributeValueResolved(i);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (value == null) {
throw reader.missingRequiredAttribute(null, "value");
}
switch (reader.nextTag()) {
case END_ELEMENT: {
return value;
}
default: {
throw reader.unexpectedElement();
}
}
}
private static int parseIntElement(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
Integer value = null;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "value": {
value = reader.getIntAttributeValueResolved(i);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (value == null) {
throw reader.missingRequiredAttribute(null, "value");
}
switch (reader.nextTag()) {
case END_ELEMENT: {
return value;
}
default: {
throw reader.unexpectedElement();
}
}
}
private static boolean parseBooleanElement(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
Boolean value = null;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "value": {
value = reader.getBooleanAttributeValueResolved(i);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (value == null) {
throw reader.missingRequiredAttribute(null, "value");
}
switch (reader.nextTag()) {
case END_ELEMENT: {
return value;
}
default: {
throw reader.unexpectedElement();
}
}
}
private static void parseConfigsElement(final ConfigurationXMLStreamReader reader, final WildflyHttpContext.Builder builder) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
if (attributeCount > 0) {
throw reader.unexpectedAttribute(0);
}
while (reader.hasNext()) {
switch (reader.nextTag()) {
case START_ELEMENT: {
switch (reader.getNamespaceURI()) {
case NS_EJB_HTTP_CLIENT:
break;
default:
throw reader.unexpectedElement();
}
switch (reader.getLocalName()) {
case "config": {
parseConfig(reader, builder);
break;
}
default:
throw reader.unexpectedElement();
}
break;
}
case END_ELEMENT: {
return;
}
}
}
}
private static void parseDefaults(final ConfigurationXMLStreamReader reader, final WildflyHttpContext.Builder builder) throws ConfigXMLParseException {
if (reader.getAttributeCount() > 0) {
throw reader.unexpectedAttribute(0);
}
while (reader.hasNext()) {
switch (reader.nextTag()) {
case START_ELEMENT: {
switch (reader.getNamespaceURI()) {
case NS_EJB_HTTP_CLIENT:
break;
default:
throw reader.unexpectedElement();
}
switch (reader.getLocalName()) {
case "bind-address": {
builder.setDefaultBindAddress(parseBind(reader));
break;
}
case "idle-timeout": {
builder.setIdleTimeout(parseLongElement(reader));
break;
}
case "max-connections": {
builder.setMaxConnections(parseIntElement(reader));
break;
}
case "max-streams-per-connection": {
builder.setMaxStreamsPerConnection(parseIntElement(reader));
break;
}
case "eagerly-acquire-session": {
builder.setEagerlyAcquireSession(parseBooleanElement(reader));
break;
}
case "enable-http2": {
builder.setEnableHttp2(parseBooleanElement(reader));
break;
}
case "buffer-pool": {
builder.setBufferConfig(parseBufferConfig(reader));
break;
}
default:
throw reader.unexpectedElement();
}
break;
}
case END_ELEMENT: {
return;
}
}
}
}
private static WildflyHttpContext.BufferBuilder parseBufferConfig(final ConfigurationXMLStreamReader reader) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
Integer bufferSize = null;
Integer maxSize = null;
Integer threadLocalSize = null;
Boolean direct = null;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "buffer-size": {
bufferSize = reader.getIntAttributeValueResolved(i);
break;
}
case "max-size": {
maxSize = reader.getIntAttributeValueResolved(i);
break;
}
case "thread-local-size": {
threadLocalSize = reader.getIntAttributeValueResolved(i);
break;
}
case "direct": {
direct = reader.getBooleanAttributeValueResolved(i);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (bufferSize == null) {
throw reader.missingRequiredAttribute(null, "value");
}
WildflyHttpContext.BufferBuilder value = new WildflyHttpContext.BufferBuilder();
value.setBufferSize(bufferSize);
if(maxSize != null) {
value.setMaxSize(maxSize);
}
if(threadLocalSize != null) {
value.setThreadLocalSize(threadLocalSize);
}
if(direct != null) {
value.setDirect( direct);
}
switch (reader.nextTag()) {
case END_ELEMENT: {
return value;
}
default: {
throw reader.unexpectedElement();
}
}
}
private static void parseConfig(final ConfigurationXMLStreamReader reader, final WildflyHttpContext.Builder builder) throws ConfigXMLParseException {
final int attributeCount = reader.getAttributeCount();
URI uri = null;
for (int i = 0; i < attributeCount; i++) {
switch (reader.getAttributeLocalName(i)) {
case "uri": {
uri = reader.getURIAttributeValueResolved(i);
break;
}
default: {
throw reader.unexpectedAttribute(i);
}
}
}
if (uri == null) {
throw reader.missingRequiredAttribute(null, "uri");
}
final WildflyHttpContext.Builder.HttpConfigBuilder targetBuilder = builder.addConfig(uri);
while (reader.hasNext()) {
switch (reader.nextTag()) {
case START_ELEMENT: {
switch (reader.getNamespaceURI()) {
case NS_EJB_HTTP_CLIENT:
break;
default:
throw reader.unexpectedElement();
}
switch (reader.getLocalName()) {
case "idle-timeout": {
targetBuilder.setIdleTimeout(parseLongElement(reader));
break;
}
case "max-connections": {
targetBuilder.setMaxConnections(parseIntElement(reader));
break;
}
case "max-streams-per-connection": {
targetBuilder.setMaxStreamsPerConnection(parseIntElement(reader));
break;
}
case "eagerly-acquire-session": {
targetBuilder.setEagerlyAcquireSession(parseBooleanElement(reader));
break;
}
case "enable-http2": {
targetBuilder.setEnableHttp2(parseBooleanElement(reader));
break;
}
case "bind-address": {
targetBuilder.setBindAddress(parseBind(reader));
break;
}
default:
throw reader.unexpectedElement();
}
break;
}
case END_ELEMENT: {
return;
}
}
}
}
}
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