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Redis C语言操作封装

2024-07-05 22:48:23   226人阅读

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#ifndef BOYAA_FOURLANDLORD_REDISCLASS_H_20130217
#define BOYAA_FOURLANDLORD_REDISCLASS_H_20130217
 
#include "hiredis.h"
#include <string>
#include <vector>
using namespace std;
 
typedef struct RedisConf
{
    char pszServer[32];
    int  nPort;
    RedisConf()
    {
        memset(this, 0, sizeof(RedisConf));
    }
}TRedisConf;
 
class CRedisClass
{      
    public:
        CRedisClass(string& host, int& port, unsigned short second = 5);
        ~CRedisClass();
        int ConnectRedis(const char* host, const unsigned short& port, const unsigned short second = 5);
        int ConnectRedis();
        int SetValue(const string &key, const string &value);
        string &GetValue(const string &key, string &value);
        bool DelValue(string &key);
        bool ExiKey( string &key);
        int Enqueue(const string &queue, const string &value);
        string &Dequeue(const string &queue, string &value);
        int Push(const string &stack, const string &value);
        string &Pop(const string &stack, string &value);
        bool IsActived();
        bool Expire(const string& key, unsigned int sec);
 
        bool ZRange(string& key, int start, int end, vector<string> & ret);
        int ZSize(const string& key);
        int ZAdd(const string& key, const int value, const string& menber);
        bool ZRemRangeByRank(const string& key, int min, int max);
        string ZScore(const string& key, const string& member, string& score);
        int ZRank(const string& key, const string& member);
        int ZRevRank(const string& key, const string& member);
        bool SetByte(const string & key, char * buf, int len);
        int GetByte(const string & key, char * buf, int len);  
        bool SAdd(const string & key, const string & menber);
        bool SRem(const string & key, const string & menber);
        bool SMembers(const string & key, vector<string> & ret);
 
        bool LPush(const string & key, const string & menber);
        bool RPush(const string & key, const string & menber);
        bool LPop(const string & key, string & value);
        bool RPop(const string & key, string & value);
        bool RRange(const string & key, vector<string> & ret);
        bool LRem(const string & key, const string & menber);
        int LLen(const string & key);  
    private:
        TRedisConf m_RedisConf;            //redis配置
        redisContext *m_Redis;
        redisReply *m_Reply;
        struct timeval timeout;
        string redisHost;
        unsigned short redisPort;
         
        void freeReply();
        bool ping();
        CRedisClass(const CRedisClass& /*rhs*/){}
         
};
 
#endif

　　

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#include "RedisClass.h"
#include <string>
using namespace std;
 
CRedisClass::CRedisClass(string& host, int& port,unsigned short second/* = 5*/)
{
    m_Reply = NULL;
    redisHost = host;
    redisPort = port;
    timeout.tv_sec = second;
    timeout.tv_usec = 0;
    m_Redis = redisConnectWithTimeout(redisHost.c_str(), redisPort, timeout);
}
 
CRedisClass::~CRedisClass()
{
    if(m_Reply)
    {
        freeReply();
    }
    if(m_Redis)
    {
        redisFree(m_Redis);
    }
}
 
int CRedisClass::ConnectRedis(const char* host, const unsigned short& port, const unsigned short second/* = 5*/)
{
    if (m_Redis)
    {
       redisFree(m_Redis);
    }
     
    struct timeval tv = {second, 0};
     
    m_Redis = redisConnectWithTimeout(host, port, tv);
     
    return m_Redis ? 0 : 1;
 
}
 
int CRedisClass::ConnectRedis()
{
    if (m_Redis)
    {
       redisFree(m_Redis);
    }
     
    m_Redis = redisConnectWithTimeout(redisHost.c_str(), redisPort, timeout);
     
    return m_Redis ? 0 : 1;
 
}
 
int CRedisClass::SetValue(const string& key, const string& value)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "SET %s %s", key.c_str(), value.c_str()));
     
    int result = 1;
    if(m_Reply != NULL)
    {
        result = m_Reply ? m_Reply->integer : 1;
    }
    freeReply();
    return result;
 
}
 
string& CRedisClass::GetValue(const string& key, string& value)
{
     m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "GET %s", key.c_str()));
     if(m_Reply != NULL && NULL != m_Reply->str)
     {
        value = http://www.mamicode.com/m_Reply->str;
     }
     freeReply();
     return value;
}
 
int CRedisClass::Enqueue(const string& queue, const string& value)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "rpush %s %s", queue.c_str(), value.c_str()));
 
    int result = 1;
    if(m_Reply != NULL)
    {
       result = m_Reply ? m_Reply->integer : 1;
    }
    freeReply();
 
    return result;
 
}
 
string& CRedisClass::Dequeue(const string& queue, string& value)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "lpop %s", queue.c_str()));
     
    if (m_Reply)
    {
        if (m_Reply->type == 1)
        {
            value = http://www.mamicode.com/m_Reply->str;
        }
 
        freeReply();
    }
    return value; 
}
 
int CRedisClass::Push(const string& stack, const string& value)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "rpush %s %s", stack.c_str(), value.c_str()));
 
    int result = 1;
    if(m_Reply != NULL)
    {
        result = m_Reply ? m_Reply->integer : 1;
    }
 
    freeReply();
 
    return result;
}
 
string& CRedisClass::Pop(const string& stack, string& value)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "rpop %s", stack.c_str()));
    if(m_Reply != NULL)
    {
        value = http://www.mamicode.com/m_Reply->str;
    }
 
    freeReply();
 
    return value;
}
 
bool CRedisClass::DelValue(string& key)
{
    m_Reply = reinterpret_cast<redisReply*>(redisCommand(m_Redis, "DEL %s ", key.c_str()));
    if(m_Reply != NULL)
    {
       freeReply();
       return true;
    }
    return false;
}
 
bool CRedisClass::ExiKey(string& key)
{
    int rec = 0;
    m_Reply = reinterpret_cast<redisReply*>(redisCommand(m_Redis, "EXISTS %s", key.c_str()));
    if(m_Reply != NULL)
    {
       rec = m_Reply->integer;  
       freeReply();
       return rec==1 ? true : false;
    }
 
    return false;
}
 
bool CRedisClass::IsActived()
{
     return ping();
}
 
void CRedisClass::freeReply()
{
    if(m_Reply)
    {
        freeReplyObject(m_Reply);
        m_Reply = NULL;
    }
 
}
 
bool CRedisClass::ping()
{
    if (!m_Redis)
    {
        return false;
    }
     
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ping"));
 
    bool IsActviced = false;
 
    if (m_Reply != NULL)
    {
        IsActviced = strcmp("PONG", m_Reply->str) == 0 ? true : false;
 
        freeReply();
    }
 
    return IsActviced;
}
 
bool CRedisClass::ZRange(string& key, int start, int end, vector<string> & ret)
{
    m_Reply = reinterpret_cast<redisReply*>(redisCommand(m_Redis, "ZREVRANGE %s %d %d",
                key.c_str(), start, end));
    if(m_Reply != NULL)
    {
        for (int i = 0; i < m_Reply->elements; i++)
        {
            redisReply *r = m_Reply->element[i];
            ret.push_back(r->str);
        }
        freeReply();
        return true;
    }
    return false;
}
 
int CRedisClass::ZSize(const string& key)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZCARD %s", key.c_str()));
 
    int result = 0;
    if(m_Reply != NULL)
    {
        result = m_Reply ? m_Reply->integer : 0;
        freeReply();
    }
    return result;
}
 
int CRedisClass::ZAdd(const string& key, const int value, const string& menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZADD %s %d %s", key.c_str(), value, menber.c_str()));
 
    int result = 1;
    if(m_Reply != NULL)
    {
        result = m_Reply ? m_Reply->integer : 1;
        freeReply();
    }
    return result;
 
}
 
bool CRedisClass::ZRemRangeByRank(const string& key, int min, int max)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZREMRANGEBYRANK %s %d %d", key.c_str(), min, max));
    int result = 1;
    if(m_Reply != NULL)
    {
        result = m_Reply ? m_Reply->integer : 1;
        freeReply();
    }
    return result;
}
string CRedisClass::ZScore(const string& key, const string& member, string& score)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZSCORE %s %s", key.c_str(), member.c_str()));
    if(m_Reply != NULL)
    {
        if (NULL != m_Reply->str)
        {
            score = m_Reply->str;
        }
        freeReply();
    }
 
    return score;
}
 
int CRedisClass::ZRank(const string& key, const string& member)
{
    int ret = 1000000;
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZREVRANK %s %s", key.c_str(), member.c_str()));
    if(m_Reply != NULL && 3 == m_Reply->type)
    {
        ret = m_Reply->integer;
        freeReply();
    }
 
    return ret;
}
int CRedisClass::ZRevRank(const string& key, const string& member)
{
    int ret = 1000000;
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "ZREVRANK %s %s", key.c_str(), member.c_str()));
    if(m_Reply != NULL && 3 == m_Reply->type)
    {
        ret = m_Reply->integer;
        freeReply();
    }
 
    return ret;
}
 
bool CRedisClass::Expire(const string& key, unsigned int sec)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "EXPIRE %s %d", key.c_str(), sec));
    bool result = false;
    if(m_Reply != NULL)
    {
        result = true;
        freeReply();
    }
    return result;
}
bool CRedisClass::SetByte(const string & key, char * buf, int len)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "SET %b %b", key.c_str(), key.length(), buf, len));
    int result = false;
    if(m_Reply != NULL)
    {
        result = true;
        freeReply();
    }
    return result;
}
 
int CRedisClass::GetByte(const string & key, char * buf, int len)
{
    if (NULL != buf)
    {
        m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "GET %s", key.c_str()));
        if (NULL != m_Reply && len >= m_Reply->len)
        {
            memcpy(buf, m_Reply->str, m_Reply->len);
            int iRet = m_Reply->len;
            freeReply();
            return iRet;
        }
    }
    return 0;
}
 
bool CRedisClass::SAdd(const string & key, const string & menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "SADD %s %s", key.c_str(), menber.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        if (1 == m_Reply->integer)
        {
            result = true;
        }
        freeReply();
    }
    return result;
}
 
bool CRedisClass::SRem(const string & key, const string & menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "SREM %s %s", key.c_str(), menber.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        if (1 == m_Reply->integer)
        {
            result = true;
        }
        freeReply();
    }
    return result;
}
 
bool CRedisClass::SMembers(const string & key, vector<string> & ret)
{
    m_Reply = reinterpret_cast<redisReply*>(redisCommand(m_Redis, "SMEMBERS %s", key.c_str()));
    if(m_Reply != NULL)
    {
        for (int i = 0; i < m_Reply->elements; i++)
        {
            redisReply *r = m_Reply->element[i];
            ret.push_back(r->str);
        }
        freeReply();
        return true;
    }
    return false;
}
 
bool CRedisClass::LPush(const string & key, const string & menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "LPUSH %s %s", key.c_str(), menber.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        if (0 < m_Reply->integer)
        {
            result = true;
        }
        freeReply();
    }
    return result;
}
 
bool CRedisClass::RPush(const string & key, const string & menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "RPUSH %s %s", key.c_str(), menber.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        if (0 < m_Reply->integer)
        {
            result = true;
        }
        freeReply();
    }
    return result;
}
 
bool CRedisClass::LPop(const string & key, string & value)
{
    value = http://www.mamicode.com/"";
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "LPOP %s", key.c_str()));
    if(m_Reply != NULL && NULL != m_Reply->str)
    {
        value = http://www.mamicode.com/m_Reply->str;
    }
 
    freeReply();
    if (value.empty())
    {
        return false;
    }
    return true;
}
 
bool CRedisClass::RPop(const string & key, string & value)
{
    value = http://www.mamicode.com/"";
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "RPOP %s", key.c_str()));
    if(m_Reply != NULL && NULL != m_Reply->str)
    {
        value = http://www.mamicode.com/m_Reply->str;
    }
 
    freeReply();
    if (value.empty())
    {
        return false;
    }
    return true;
}
 
bool CRedisClass::RRange(const string & key, vector<string> & ret)
{
    string value;
    while (RPop(key, value))
    {
        ret.push_back(value);
    }
 
    return true;
}
bool CRedisClass::LRem(const string & key, const string & menber)
{
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "LREM %s %s", key.c_str(), menber.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        if (1 == m_Reply->integer)
        {
            result = true;
        }
        freeReply();
    }
    return result;
}
 
int CRedisClass::LLen(const string & key)
{
    int ret = 0;
    m_Reply = static_cast<redisReply*>(redisCommand(m_Redis, "LLEN %s", key.c_str()));
 
    bool result = false;
    if(m_Reply != NULL)
    {
        ret = m_Reply->integer;
        freeReply();
    }
    return ret;
}

　　


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