fish.payara.persistence.eclipselink.cache.coordination.HazelcastTopicRemoteConnection Maven / Gradle / Ivy
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package fish.payara.persistence.eclipselink.cache.coordination;
import fish.payara.nucleus.eventbus.ClusterMessage;
import fish.payara.nucleus.eventbus.MessageReceiver;
import org.eclipse.persistence.internal.sessions.coordination.broadcast.BroadcastRemoteConnection;
import org.eclipse.persistence.sessions.coordination.Command;
import org.eclipse.persistence.sessions.coordination.RemoteCommandManager;
/**
* Hazelcast {@link BroadcastRemoteConnection} implementing the HZ {@link MessageListener} interface.
*
* @author Sven Diedrichsen
*/
public class HazelcastTopicRemoteConnection extends BroadcastRemoteConnection implements MessageReceiver {
/**
* The topic to publish commands to and receive messages from.
*/
private final HazelcastTopic topic;
HazelcastTopicRemoteConnection(RemoteCommandManager rcm) {
super(rcm);
this.topic = new HazelcastTopic(rcm.getChannel(), this);
}
/**
* Publishes the provided command via {@link HazelcastTopic}.
* @param o The command to execute.
* @return NULL
* @throws Exception In case of an error.
*/
@Override
protected Object executeCommandInternal(Object o) throws Exception {
if (o != null) {
Object[] debugInfo = null;
if (this.rcm.shouldLogDebugMessage()) {
debugInfo = this.logDebugBeforePublish(null);
}
if(Command.class.isAssignableFrom(o.getClass())) {
this.topic.publish(new HazelcastPayload.Command((Command) o));
} else if (o.getClass().isArray()) {
this.topic.publish(new HazelcastPayload.Bytes((byte[]) o));
}
if (debugInfo != null) {
this.logDebugAfterPublish(debugInfo, "");
}
}
return null;
}
@Override
protected void closeInternal() throws Exception {
this.topic.destroy();
}
/**
* Receives any published message containing hz payload.
* @param message the message to process.
*/
@Override
public void receiveMessage(ClusterMessage message) {
HazelcastPayload payload = message.getPayload();
if (!topic.hasPublished(payload)) {
HazelcastTopicStorage.getInstance().process(
() -> {
try {
this.processReceivedObject(payload.getCommand(this.rcm), payload.getId().toString());
} catch (Exception e) {
this.failDeserializeMessage(payload.getId().toString(), e);
}
}
);
}
}
}