| /** |
| * 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. |
| */ |
| #pragma once |
| |
| #include <assert.h> |
| #include <atomic> |
| #include "ServiceURI.h" |
| |
| namespace pulsar { |
| |
| class ServiceNameResolver { |
| public: |
| ServiceNameResolver(const std::string& uriString) |
| : serviceUri_(uriString), numAddresses_(serviceUri_.getServiceHosts().size()) { |
| assert(numAddresses_ > 0); // the validation has been done in ServiceURI |
| } |
| |
| ServiceNameResolver(const ServiceNameResolver&) = delete; |
| ServiceNameResolver& operator=(const ServiceNameResolver&) = delete; |
| |
| bool useTls() const noexcept { |
| return serviceUri_.getScheme() == PulsarScheme::PULSAR_SSL || |
| serviceUri_.getScheme() == PulsarScheme::HTTPS; |
| } |
| |
| bool useHttp() const noexcept { |
| return serviceUri_.getScheme() == PulsarScheme::HTTP || |
| serviceUri_.getScheme() == PulsarScheme::HTTPS; |
| } |
| |
| const std::string& resolveHost() { |
| return serviceUri_.getServiceHosts()[(numAddresses_ == 1) ? 0 : (index_++ % numAddresses_)]; |
| } |
| |
| private: |
| const ServiceURI serviceUri_; |
| const size_t numAddresses_; |
| std::atomic_size_t index_{0}; |
| |
| friend class PulsarFriend; |
| }; |
| |
| } // namespace pulsar |