Linux下Redis C++操作的封装
2024-08-30 10:09:04
安装和启动Redis服务...略!很粗糙的版本,待改进...
Redis Client C++示例代码...略!
/** * Time: 14-3-10 * File: RedisCache.h * Author: wbhuang * Description: none */ #ifndef __REDIS_CACHE_H__ #define __REDIS_CACHE_H__ #include <string> #include <boost/date_time.hpp> #include "redisclient.h" using namespace std; using namespace boost; class RedisMediator { public: static const int DEFAULT_EXPIRE_TIME = 0; virtual string getKey() = 0; virtual string getValue() = 0; int getTime() { return 0; } bool getIsSetDefaultValue() { return false; } string getDefaultValue() { return "none"; } }; class RedisCache { private: string host, port; bool clusterMode; shared_ptr<redis::client> client; public: RedisCache(); virtual ~RedisCache(); RedisCache(string host, string port); string set(string key, string value); string get(string key); string del(string key); string getAndSet(RedisMediator *redisMediator); bool exists(string key); vector<string> mGet(vector<string> *keys); vector<string> mSet(vector<string> *keys, vector<string> *values); vector<string> mGetAndSet(vector<RedisMediator*> *redisMediators); string hashSet(string key, string field, string value); string hashGet(string key, string field); string hashDel(string key, string field); string hashGetAndSet(string key, RedisMediator *redisMediator); bool hashExists(string key, string field); int hashLen(string key); string sAdd(string key, string value); string sPop(string key); string sDel(string key); string rPush(string key, string value); string lPush(string key, string value); int lLen(string key); string lIndex(string key, int index); string lSet(string key, int index, string value); string lPop(string key); string rPop(string key); void flushAll(); void flushDb(); protected: }; #endif /*__REDIS_CACHE_H__*/
/** * Time: 14-3-1 * File: RedisCache.cpp * Author: wbhuang * Description: none */ #include "RedisCache.h" #define VALUE_NULL "**nonexistent-key**" RedisCache::RedisCache() { char *charHost= getenv("REDIS_HOST"); if(charHost) { host = string(charHost); } else { host = string("localhost"); } client = shared_ptr<redis::client>( new redis::client(host) ); } RedisCache::RedisCache(string host, string port):host(host), port(port) { client = shared_ptr<redis::client>( new redis::client(this->host) ); } RedisCache::~RedisCache() { } string RedisCache::set(string key, string value) { if (key.empty()) return ""; client->set(key, value); return value; } string RedisCache::get(string key) { string value; if (key.empty()) return ""; if (exists(key)) value = client->get(key); return value; } string RedisCache::del(string key) { string value; value = get(key); client->del(key); return value; } string RedisCache::getAndSet(RedisMediator *redisMediator) { if (NULL == redisMediator) return ""; string key, value; key = redisMediator->getKey(); value = get(key); if (value.empty()) { value = redisMediator->getValue(); set(key, value); int time = redisMediator->getTime(); if (0 != time) client->expire(key, time); } return value; } bool RedisCache::exists(string key) { return client->exists(key); } vector<string> RedisCache::mGet(vector<string> *keys) { redis::client::string_vector vals; client->mget(*keys, vals); return vals; } vector<string> RedisCache::mSet(vector<string> *keys, vector<string> *values) { for (int i = 0; i < keys->size(); i++) { client->set((*keys)[i], (*values)[i]); } return *values; } vector<string> RedisCache::mGetAndSet(vector<RedisMediator*> *redisMediators) { string key, value; vector<string> values; for (int i = 0; i < redisMediators->size(); i++) { key = (*redisMediators)[i]->getKey(); value = get(key); if (value.empty()) { value = (*redisMediators)[i]->getKey(); set(key, value); } values.push_back(value); } return values; } string RedisCache::hashSet(string key, string field, string value) { if(key.empty() || field.empty()) return ""; client->hset(key, field, value); return value; } string RedisCache::hashGet(string key, string field) { if (key.empty() || field.empty()) return ""; string value; if (hashExists(key, field)) value = client->hget(key, field); return value; } string RedisCache::hashDel(string key, string field) { string value; value = hashGet(key, field); client->hdel(key, field); return value; } string RedisCache::hashGetAndSet(string key, RedisMediator *redisMediator) { if (key.empty() || NULL == redisMediator) return ""; string field, value; field = redisMediator->getKey(); value = hashGet(key, field); if (value.empty()) { value = redisMediator->getValue(); hashSet(key, field, value); } return value; } bool RedisCache::hashExists(string key, string field) { return client->hexists(key, field); } int RedisCache::hashLen(string key) { return client->hlen(key); } string RedisCache::sAdd(string key, string value) { if (key.empty() || value.empty()) return ""; client->sadd(key, value); return value; } string RedisCache::sPop(string key) { string value; value = client->spop(key); if (VALUE_NULL == value) value = ""; return value; } string RedisCache::sDel(string key) { if (key.empty()) return ""; return sPop(key); } string RedisCache::rPush(string key, string value) { if (key.empty()) return ""; client->rpush(key, value); return value; } string RedisCache::lPush(string key, string value) { if (key.empty()) return ""; client->lpush(key, value); return value; } int RedisCache::lLen(string key) { if (key.empty()) return 0; return client->llen(key); } string RedisCache::lIndex(string key, int index) { if (key.empty() || index < 0 || index >= lLen(key)) return ""; string value = client->lindex(key, index); if (VALUE_NULL == value) value =""; return value; } string RedisCache::lSet(string key, int index, string value) { if (key.empty() || index < 0 || index >= lLen(key)) return ""; client->lset(key, index, value); return value; } string RedisCache::lPop(string key) { if (key.empty()) return ""; string value = client->lpop(key); if (VALUE_NULL == value) value = ""; return value; } string RedisCache::rPop(string key) { if (key.empty()) return ""; string value = client->rpop(key); if (VALUE_NULL == value) value = ""; return value; } void RedisCache::flushAll() { client->flushall(); } void RedisCache::flushDb() { client->flushdb(); }
#include "RedisCache.h" #include <iostream> int main() { RedisCache* cache = new RedisCache(); cache->set("foo", "wbhuang"); string value = cache->get("foo"); cout<<"after set foo:"<<value<<endl; cache->del("foo"); value = cache->get("foo"); cout<<"after del foo:"<<cache->get("foo")<<endl; vector<string> vecKey, vecValue; vecKey.push_back("foo1"); vecValue.push_back("val1"); vecKey.push_back("foo2"); vecValue.push_back("val2"); cache->mSet(&vecKey, &vecValue); cout<<"after mset foo2:"<<cache->get("foo2")<<endl; vector<string> vecRet = cache->mGet(&vecKey); cout<<"after mget foo1:"<<vecRet[0]<<endl; string hKey = "hfoo"; string hField = "hfield"; cache->hashSet(hKey, hField, "wbhuang"); cout<<"after hset len:"<<cache->hashLen(hKey)<<endl; string hValue = cache->hashGet(hKey, hField); cache->hashDel(hKey, hField); //cache->del(hKey); cout<<"after hdel len:"<<cache->hashLen(hKey) <<",value"<<cache->hashGet(hKey, hField)<<endl; string sKey = "sKey"; string sValue = "sValue"; cache->sAdd(sKey, sValue); cout<<"after sAdd value:"<<cache->sPop(sKey)<<endl; cache->sDel(sKey); cout<<"after sDel value:"<<cache->sPop(sKey)<<endl; string rKey = "rfoo"; string rValue = "rValue", lValue = "lValue"; cache->rPush(rKey, rValue); cout<<"test rPush end"<<endl; cache->lPush(rKey, lValue); cout<<"test lPush end"<<endl; string rRet; rRet = cache->lIndex(rKey, 1); cout<<"test lIndex end rRet:"<<rRet<<endl; int llen = cache->lLen(rKey); cout<<"test lLen end len:"<<llen<<endl; cout<<"test lIndex end 1:"<<rRet<<endl; rRet = cache->lPop(rKey); cout<<"after lPop ret:"<<rRet<<endl; cache->lSet(rKey, 0, "wbh"); rRet = cache->rPop(rKey); cout<<"after lset rPop ret:"<<rRet<<endl; rRet = cache->rPop(rKey); cout<<"empty stack len:"<<cache->lLen(rKey)<<",ret:"<<cache->rPop(rKey)<<endl; cout<<"empty statck 0:"<<cache->lIndex(rKey, 0)<<endl; cache->flushDb(); delete cache; return 0; }
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