org.wildfly.naming.client.remote.ProtocolUtils 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).
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/*
* JBoss, Home of Professional Open Source.
* 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.naming.client.remote;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ServiceConfigurationError;
import java.util.ServiceLoader;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.MarshallingConfiguration;
import org.jboss.marshalling.OutputStreamByteOutput;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.remoting3.MessageInputStream;
import org.jboss.remoting3.MessageOutputStream;
import org.wildfly.naming.client.MarshallingCompatibilityHelper;
/**
* Utilities related to the remote naming transport protocol.
*
* @author Farah Juma
*/
final class ProtocolUtils {
public static final String NAMING = "naming";
public static final byte[] NAMING_BYTES = { 'n', 'a', 'm', 'i', 'n', 'g' };
private static MarshallerFactory riverMarshallerFactory = Marshalling.getProvidedMarshallerFactory("river");
private ProtocolUtils() {
}
public static int readId(final MessageInputStream stream, final int version) throws IOException {
return version == 1 ? stream.readInt() : stream.readUnsignedShort();
}
public static void writeId(final MessageOutputStream stream, final int version, final int id) throws IOException {
if (version == 1) {
stream.writeInt(id);
} else {
stream.writeShort(id);
}
}
public static Unmarshaller createUnmarshaller(MessageInputStream is, MarshallingConfiguration configuration) throws IOException {
final Unmarshaller unmarshaller = riverMarshallerFactory.createUnmarshaller(configuration);
unmarshaller.start(Marshalling.createByteInput(is));
return unmarshaller;
}
public static Marshaller createMarshaller(MessageOutputStream os, MarshallingConfiguration configuration) throws IOException {
final Marshaller marshaller = riverMarshallerFactory.createMarshaller(configuration);
marshaller.start(new OutputStreamByteOutput(os) {
@Override
public void flush() throws IOException {
//ignore flushes, all they do is wreck performance as you get a double flush when closing the marshaller
//which results in two network packets being sent
}
});
return marshaller;
}
private static final List MARSHALLING_COMPATIBILITY_HELPERS;
static {
List list = new ArrayList<>();
final ServiceLoader helpers = ServiceLoader.load(MarshallingCompatibilityHelper.class, ProtocolUtils.class.getClassLoader());
final Iterator iterator = helpers.iterator();
for (;;) try {
if (! iterator.hasNext()) break;
list.add(iterator.next());
} catch (ServiceConfigurationError e) {}
MARSHALLING_COMPATIBILITY_HELPERS = list;
}
static List getMarshallingCompatibilityHelpers() {
return MARSHALLING_COMPATIBILITY_HELPERS;
}
}