org.jboss.ejb.protocol.remote.ProtocolV1ObjectResolver 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 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.AbstractEJBMetaData;
import org.jboss.ejb.client.Affinity;
import org.jboss.ejb.client.EJBMetaDataImpl;
import org.jboss.ejb.client.NodeAffinity;
import org.jboss.ejb.client.URIAffinity;
import org.jboss.marshalling.ObjectResolver;
import org.jboss.remoting3.Connection;
import org.wildfly.common.rpc.RemoteExceptionCause;
/**
* @author David M. Lloyd
*/
final class ProtocolV1ObjectResolver extends ProtocolObjectResolver implements ObjectResolver {
private final NodeAffinity peerNodeAffinity;
private final NodeAffinity selfNodeAffinity;
private final URIAffinity peerUriAffinity;
private final boolean preferUri;
ProtocolV1ObjectResolver(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 instanceof EJBMetaDataImpl) {
return ((EJBMetaDataImpl) replacement).toAbstractEJBMetaData();
} else if (replacement instanceof NodeAffinity) {
if (replacement.equals(selfNodeAffinity)) {
// Peer sent our node name; make it local
return Affinity.LOCAL;
} else if (preferUri && peerUriAffinity != null && replacement.equals(peerNodeAffinity)) {
// Peer (server) sent their own node name; make it a URI if we can
return peerUriAffinity;
}
} else if(replacement == Affinity.NONE) {
return peerUriAffinity;
}
return replacement;
}
public Object writeReplace(final Object original) {
if (original instanceof URIAffinity) {
if (peerUriAffinity != null && original.equals(peerUriAffinity) && peerNodeAffinity != null) {
return peerNodeAffinity;
}
return Affinity.NONE;
} else if (original == Affinity.LOCAL && selfNodeAffinity != null) {
// Swap a local affinity with a node affinity with the name of this node
return selfNodeAffinity;
} else if (original instanceof AbstractEJBMetaData) {
return new EJBMetaDataImpl((AbstractEJBMetaData) original);
} else if (original instanceof RemoteExceptionCause) {
// old clients will not have this class
return ((RemoteExceptionCause) original).toPlainThrowable();
}
return super.writeReplace(original);
}
}