org.jboss.ejb.protocol.remote.ProtocolV3ObjectResolver 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.jboss.ejb.protocol.remote;
import java.net.URI;
import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.NodeAffinity;
import org.jboss.ejb.client.URIAffinity;
import org.jboss.marshalling.ObjectResolver;
import org.jboss.remoting3.Connection;
/**
* @author Farah Juma
*/
final class ProtocolV3ObjectResolver extends ProtocolObjectResolver implements ObjectResolver {
private final NodeAffinity peerNodeAffinity;
private final NodeAffinity selfNodeAffinity;
private final URIAffinity peerUriAffinity;
private final boolean preferUri;
ProtocolV3ObjectResolver(final Connection connection, final boolean preferUri) {
final String remoteEndpointName = connection.getRemoteEndpointName();
peerNodeAffinity = remoteEndpointName == null ? null : new NodeAffinity(remoteEndpointName);
final String localEndpointName = connection.getEndpoint().getName();
selfNodeAffinity = localEndpointName == null ? null : new NodeAffinity(localEndpointName);
this.preferUri = preferUri;
final URI peerURI = connection.getPeerURI();
peerUriAffinity = peerURI == null ? null : (URIAffinity) Affinity.forUri(peerURI);
}
public Object readResolve(final Object replacement) {
if (replacement == Affinity.LOCAL) {
// This shouldn't be possible. If it happens though, we will guess that it is the peer talking about itself
return preferUri && peerUriAffinity != null ? peerUriAffinity : peerNodeAffinity != null ? peerNodeAffinity : Affinity.NONE;
} else if (replacement instanceof NodeAffinity) {
if (selfNodeAffinity != null && replacement.equals(selfNodeAffinity)) {
return Affinity.LOCAL;
} else if (preferUri && peerUriAffinity != null && peerNodeAffinity != null && replacement.equals(peerNodeAffinity)) {
// the peer is talking about itself; use the more specific URI if we have one
return peerUriAffinity;
}
}
return replacement;
}
public Object writeReplace(final Object original) {
if (original == Affinity.LOCAL && selfNodeAffinity != null) {
// we don't know the peer's view URI of us, if there even is one, so switch it to node affinity and let the peer sort it out
return selfNodeAffinity;
} else if (peerUriAffinity != null && original instanceof URIAffinity && original.equals(peerUriAffinity) && peerNodeAffinity != null) {
// it's the peer node; the peer won't know its own URI though, so send its node affinity instead
return peerNodeAffinity;
}
return super.writeReplace(original);
}
}