kythe.io@v0.0.68-0.20240422202219-7225dbc01741/kythe/cxx/common/indexing/MemcachedHashCache.h (about) 1 /* 2 * Copyright 2019 The Kythe Authors. All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef KYTHE_CXX_COMMON_INDEXING_MEMCACHEDHASHCACHE_H_ 18 #define KYTHE_CXX_COMMON_INDEXING_MEMCACHEDHASHCACHE_H_ 19 20 #include <string> 21 22 #include "kythe/cxx/common/indexing/KytheCachingOutput.h" 23 24 extern "C" { 25 struct memcached_st; 26 } 27 28 namespace kythe { 29 30 /// \brief A `HashCache` that uses a memcached server. 31 class MemcachedHashCache : public HashCache { 32 public: 33 ~MemcachedHashCache() override; 34 35 /// \brief Use a memcached instance (e.g. "--SERVER=foo:1234") 36 bool OpenMemcache(const std::string& spec); 37 38 void RegisterHash(const Hash& hash) override; 39 40 bool SawHash(const Hash& hash) override; 41 42 private: 43 ::memcached_st* cache_ = nullptr; 44 }; 45 46 } // namespace kythe 47 #endif // KYTHE_CXX_COMMON_INDEXING_MEMCACHEDHASHCACHE_H_