org.apache.rocketmq.client.java.route.TopicRouteData 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.rocketmq.client.java.route;
import org.apache.rocketmq.shaded.com.google.common.base.MoreObjects;
import org.apache.rocketmq.shaded.com.google.common.base.Objects;
import org.apache.rocketmq.shaded.com.google.common.collect.ImmutableList;
import org.apache.rocketmq.shaded.com.google.common.math.IntMath;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.rocketmq.shaded.commons.lang3.RandomUtils;
import org.apache.rocketmq.client.java.exception.NotFoundException;
import org.apache.rocketmq.client.java.misc.Utilities;
public class TopicRouteData {
private final AtomicInteger index;
/**
* Message queues of topic route.
*/
private final ImmutableList messageQueueImpls;
/**
* Construct topic route by message queues.
*
* @param messageQueues message queue list, should never be empty.
*/
public TopicRouteData(List messageQueues) {
this.index = new AtomicInteger(RandomUtils.nextInt(0, Integer.MAX_VALUE));
final ImmutableList.Builder builder = ImmutableList.builder();
for (apache.rocketmq.v2.MessageQueue messageQueue : messageQueues) {
builder.add(new MessageQueueImpl(messageQueue));
}
this.messageQueueImpls = builder.build();
}
public Set getTotalEndpoints() {
Set endpointsSet = new HashSet<>();
for (MessageQueueImpl messageQueueImpl : messageQueueImpls) {
endpointsSet.add(messageQueueImpl.getBroker().getEndpoints());
}
return endpointsSet;
}
public List getMessageQueues() {
return this.messageQueueImpls;
}
public Endpoints pickEndpointsToQueryAssignments() throws NotFoundException {
int nextIndex = index.getAndIncrement();
for (int i = 0; i < messageQueueImpls.size(); i++) {
final MessageQueueImpl messageQueueImpl = messageQueueImpls.get(IntMath.mod(nextIndex++,
messageQueueImpls.size()));
final Broker broker = messageQueueImpl.getBroker();
if (Utilities.MASTER_BROKER_ID != broker.getId()) {
continue;
}
if (Permission.NONE.equals(messageQueueImpl.getPermission())) {
continue;
}
return broker.getEndpoints();
}
throw new NotFoundException("Failed to pick endpoints to query assignment");
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
TopicRouteData that = (TopicRouteData) o;
return Objects.equal(messageQueueImpls, that.messageQueueImpls);
}
@Override
public int hashCode() {
return Objects.hashCode(messageQueueImpls);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("messageQueueImpls", messageQueueImpls)
.toString();
}
}