npm i generic-pool
npm i redis
logger自己放,config自己配
只写了一部分redis方法,其他要用自己加
var config = require('../config/config.js');
var logger = require('../log').logger;
const redisDb = {};
var redis = require('redis');
const genericPool = require('generic-pool');
// const client = redis.createClient(config.redis_port, config.redis_host, {
// auth_pass: config.redis_pass
// });
const factory = {
create: function() {
return redis.createClient(config.redis_port, config.redis_host, {
auth_pass: config.redis_pass
});
},
destroy: function(client) {
client.quit();
}
};
const opts = {
max: 10, // maximum size of the pool
min: 2 // minimum size of the pool
};
const myPool = genericPool.createPool(factory, opts);
redisDb.myPool = myPool;
/**
* 添加string类型的数据
* @param key 键
* @params value 值
* @params expire (过期时间,单位秒;可为空,为空表示不过期)
* @param callBack(err,result)
*/
redisDb.set = (dbNum, key, value, expire, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.set(key, value, (err, result) => {
if (err) {
myPool.release(client);
callback(err, null);
return;
}
if (!isNaN(expire) && expire > 0) {
client.expire(key, parseInt(expire));
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 查询string类型的数据
* @param key 键
* @param callBack(err,result)
*/
redisDb.get = (dbNum, key, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.get(key, (err, result) => {
if (err) {
myPool.release(client);
callback(err, null);
return;
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 删除string类型的数据
* @param key 键
* @param callBack(err,result)
*/
redisDb.del = (dbNum, key, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.del(key, (err, result) => {
if (err) {
myPool.release(client);
callback(err, null);
return;
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 在散列里面关联起给定的键值对
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.hset = function(dbNum, key, subKey, body, callback) {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, function(err, res) {
client.hset(key, subKey, body, function(err, result) {
if (err) {
myPool.release(client);
logger.error(err);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 在散列里面关联起给定的键值对
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.hget = (dbNum, key, subKey, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.hget(key, subKey, (err, result) => {
if (err) {
myPool.release(client);
logger.error(err);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 在散列里面关联起给定的键值对hash[]
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.hmget = (dbNum, key, subKeys, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.hmget(key, subKeys, (err, result) => {
if (err) {
logger.error(err);
myPool.release(client);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 在散列里面关联起给定的键值对hash[]
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.hmset = function(dbNum, key, subKeys, body, callback) {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, function(err, res) {
client.hmset(key, subKeys, body, function(err, result) {
if (err) {
myPool.release(client);
logger.error(err);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 查询Hashes类型的所有数据 所有属性
* @param key 键
* @param callBack(err,result)
*/
redisDb.hgetall = function(dbNum, key, callback) {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, function(err, res) {
client.hgetall(key, function(err, result) {
if (err) {
logger.error('redisservice-line96:' + err);
myPool.release(client);
callback(err, null);
return;
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 检查给定键是否在散列中
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.hexists = function(dbNum, key, subKey, callback) {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, function(err, res) {
client.hexists(key, subKey, function(err, result) {
if (err) {
myPool.release(client);
logger.error(err);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 获取一个有序集合中的成员数量
*/
redisDb.zcard = (dbNum, key, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.zcard(key, (err, response) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 根据元素在有序排列中的位置,从中取出元素,按照score从低到高顺序返回
* @param key
* @param page
* @param count
* @param callback
*/
redisDb.zrange = (dbNum, key, page, count, callback) => {
var args2 = [key, (page - 1) * count, page * count - 1];
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.zrange(args2, (err, response) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 返回有序集合所有成员
* @param {} dbNum
* @param {} key
* @param {} callback
*/
redisDb.zrangeAll = (dbNum, key, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
//选择数据库
var args2 = [key, 0, -1];
client.zrange(args2, (err, response) => {
if (err) {
logger.error('redisservice-line238:' + err);
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 返回有序集合所有成员和分数
* @param {} dbNum
* @param {} key
* @param {} callback
*/
redisDb.zrangeAllWithscore = (dbNum, key, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
//选择数据库
var args2 = [key, 0, -1, 'WITHSCORES'];
client.zrange(args2, (err, response) => {
if (err) {
logger.error('redisservice-line238:' + err);
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 根据元素在有序排列中的位置,从中取出元素,通过下标获取 按照score从高到低顺序返回
* @param key
* @param start
* @param end
* @param callback
*/
redisDb.zrevrange = (dbNum, key, page, count, callback) => {
myPool
.acquire()
.then(function(client) {
var args2 = [key, (page - 1) * count, page * count - 1];
client.select(dbNum, (err, res) => {
client.zrevrange(args2, (err, response) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 获得元素的分数
* @param key
* @param page
* @param count
* @param callback
*/
redisDb.zscore = (dbNum, key, data, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
if (!key || !data) {
myPool.release(client);
callback(null, null);
} else {
client.zscore(key, data, (error, score) => {
if (error) {
myPool.release(client);
callback(null, null);
} else {
myPool.release(client);
callback(null, score);
}
});
}
});
})
.catch(function(err) {});
};
/**
* 获取value的排位
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.zrank = (dbNum, key, value, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.zrank(key, value, (err, result) => {
if (err) {
myPool.release(client);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
/**
* 获取value的排位(从大到小)
* @param key 键
* @params body 值
* @param callBack(err,result)
*/
redisDb.zrevrank = (dbNum, key, value, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.zrevrank(key, value, (err, result) => {
if (err) {
myPool.release(client);
callback(err, null);
}
myPool.release(client);
callback(null, result);
});
});
})
.catch(function(err) {});
};
redisDb.zrangebyindex = (dbNum, key, start, page, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
//选择数据库
var args2 = [key, Number(start + 1), Number(start) + Number(page)];
client.zrange(args2, (err, response) => {
if (err) {
logger.error('redisservice-line203:' + err);
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 获取value的排位
* @param key 键
* @params start 开始index
* @param callBack(err,result)
*/
redisDb.zrevrangebyindex = (dbNum, key, start, page, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
//选择数据库
var args2 = [key, Number(start + 1), Number(start) + Number(page)];
client.zrevrange(args2, (err, response) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 获取指定分数区间的数据
* @param key
* @param from
* @param to
* @param callback
*/
redisDb.zrangebyscore = (dbNum, key, from, to, callback) => {
var args2 = [key, from, to];
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, res) => {
client.zrangebyscore(args2, (err, response) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, response);
}
});
});
})
.catch(function(err) {});
};
/**
* 有序集合
*/
redisDb.zadd = (dbNum, key, data, expireTime, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
//选择数据库
var t = new Date().getTime(); //时间戳作score
client.zadd(key, -t++, new Date() + '-' + Number(data) / 1000, (err, response) => {
//过期时间,单位秒;可为空,为空表示不过期
if (expireTime) {
client.expire(key, expireTime);
}
myPool.release(client);
callback(null, response);
});
});
})
.catch(function(err) {});
};
redisDb.zaddscore = (dbNum, key, data, expireTime, score, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
//选择数据库
client.zadd(key, score, data, (err, response) => {
//过期时间,单位秒;可为空,为空表示不过期s
if (expireTime) {
client.expire(key, expireTime);
}
myPool.release(client);
callback(null, response);
});
});
})
.catch(function(err) {});
};
/**
* 求有序集合的并集-
*/
redisDb.zunionstore = (dbNum, key, keys, page, count, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
//选择数据库
client.zunionstore([key, keys.length].concat(keys), (err, res) => {
myPool.release(client);
callback(null, res);
});
});
})
.catch(function(err) {});
};
/* *
* list的存取
* */
redisDb.lpush = (dbNum, key, searchInfo, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
client.lpush(key, searchInfo, (err, res) => {
myPool.release(client);
callback(null, res);
});
});
})
.catch(function(err) {});
};
redisDb.lrange = (dbNum, key, startNum, finalNum, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
client.lrange(key, startNum, finalNum, (err, res) => {
myPool.release(client);
callback(null, res);
});
});
})
.catch(function(err) {});
};
/* *
*去重
* */
redisDb.lrem = (dbNum, key, num, value, callback) => {
myPool
.acquire()
.then(function(client) {
client.select(dbNum, (err, result) => {
client.lrem(key, num, value, (err, res) => {
if (err) {
myPool.release(client);
callback(err, null);
} else {
myPool.release(client);
callback(null, res);
}
});
});
})
.catch(function(err) {});
};
module.exports = redisDb;