org.apache.activemq.artemis.api.core.jgroups.JGroupsReceiver Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.activemq.artemis.api.core.jgroups;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.invoke.MethodHandles;
import org.apache.activemq.artemis.shaded.org.jgroups.Receiver;
/**
* This class is used to receive messages from a JGroups channel.
* Incoming messages are put into a queue.
*/
public class JGroupsReceiver implements Receiver {
private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private final BlockingQueue dequeue = new LinkedBlockingDeque<>();
@Override
public void receive(org.apache.activemq.artemis.shaded.org.jgroups.Message msg) {
logger.trace("sending message {}", msg);
dequeue.add(msg.getArray());
}
public byte[] receiveBroadcast() throws Exception {
byte[] bytes = dequeue.take();
if (logger.isTraceEnabled()) {
logBytes("receiveBroadcast()", bytes);
}
return bytes;
}
private void logBytes(String methodName, byte[] bytes) {
if (bytes != null) {
logger.trace("{}::{} bytes", methodName, bytes.length);
} else {
logger.trace("{}:: no bytes", methodName);
}
}
public byte[] receiveBroadcast(long time, TimeUnit unit) throws Exception {
byte[] bytes = dequeue.poll(time, unit);
if (logger.isTraceEnabled()) {
logBytes("receiveBroadcast(long time, TimeUnit unit)", bytes);
}
return bytes;
}
}