| /** |
| * 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. |
| */ |
| #include "RoundRobinMessageRouter.h" |
| |
| namespace pulsar { |
| RoundRobinMessageRouter::RoundRobinMessageRouter(ProducerConfiguration::HashingScheme hashingScheme) |
| : MessageRouterBase(hashingScheme), prevPartition_(0) {} |
| |
| RoundRobinMessageRouter::~RoundRobinMessageRouter() {} |
| |
| // override |
| int RoundRobinMessageRouter::getPartition(const Message& msg, const TopicMetadata& topicMetadata) { |
| // if message has a key, hash the key and return the partition |
| if (msg.hasPartitionKey()) { |
| return hash->makeHash(msg.getPartitionKey()) % topicMetadata.getNumPartitions(); |
| } else { |
| Lock lock(mutex_); |
| // else pick the next partition |
| return prevPartition_++ % topicMetadata.getNumPartitions(); |
| } |
| } |
| |
| } // namespace pulsar |