| /** |
| * 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 "SinglePartitionMessageRouter.h" |
| #include <cstdlib> // rand() |
| #include <boost/algorithm/string.hpp> |
| namespace pulsar { |
| SinglePartitionMessageRouter::~SinglePartitionMessageRouter(){} |
| SinglePartitionMessageRouter::SinglePartitionMessageRouter(unsigned int numPartitions):numPartitions_(numPartitions) { |
| unsigned int random = rand(); |
| selectedSinglePartition_ = random % numPartitions_; |
| } |
| |
| //override |
| int SinglePartitionMessageRouter::getPartition(const Message& msg) { |
| //if message has a key, hash the key and return the partition |
| if (msg.hasPartitionKey()) { |
| StringHash hash; |
| return hash(msg.getPartitionKey()) % numPartitions_; |
| } else { |
| //else pick the next partition |
| return selectedSinglePartition_; |
| } |
| } |
| } |
