organizing redis driver

src/database/redis/sets.js

@@ -0,0 +1,63 @@
+"use strict";
+
+module.exports = function(redisClient, module) {
+	module.setAdd = function(key, value, callback) {
+		redisClient.sadd(key, value, callback);
+	};
+
+	module.setRemove = function(key, value, callback) {
+		redisClient.srem(key, value, callback);
+	};
+
+	module.isSetMember = function(key, value, callback) {
+		redisClient.sismember(key, value, function(err, result) {
+			if(err) {
+				return callback(err);
+			}
+
+			callback(null, result === 1);
+		});
+	};
+
+	module.isSetMembers = function(key, values, callback) {
+		var multi = redisClient.multi();
+		for (var i=0; i<values.length; ++i) {
+			multi.sismember(key, values[i]);
+		}
+
+		multi.exec(function(err, results) {
+			if (err) {
+				return callback(err);
+			}
+
+			for (var i=0; i<results.length; ++i) {
+				results[i] = results[i] === 1;
+			}
+			callback(null, results);
+		});
+	};
+
+	module.isMemberOfSets = function(sets, value, callback) {
+		var multi = redisClient.multi();
+
+		for (var i = 0, ii = sets.length; i < ii; i++) {
+			multi.sismember(sets[i], value);
+		}
+
+		multi.exec(callback);
+	};
+
+	module.getSetMembers = function(key, callback) {
+		redisClient.smembers(key, callback);
+	};
+
+	module.setCount = function(key, callback) {
+		redisClient.scard(key, callback);
+	};
+
+	module.setRemoveRandom = function(key, callback) {
+		redisClient.spop(key, callback);
+	};
+
+	return module;
+};