private static long ZStore(string command, IRedisClient client, string destination, RedisWeightDictionary keyWeights, RedisAggregate?aggregate)
{
if (client == null)
{
throw new ArgumentNullException("client");
}
if (string.IsNullOrEmpty(destination))
{
throw new ArgumentNullException("destination");
}
if (keyWeights == null)
{
throw new ArgumentNullException("keyWeights");
}
if (keyWeights.Count == 0)
{
return(0L);
}
IEnumerable <object> args = new object[] { destination, keyWeights.Count };
args = RedisArgs.ConcatAll(args, keyWeights.Keys);
if (keyWeights.Values.Where(weight => weight != 1.0).Count() > 0)
{
args = RedisArgs.ConcatAll(RedisArgs.ConcatLast(args, "WEIGHTS"), keyWeights.Values.Cast <object>());
}
if (aggregate.HasValue)
{
args = RedisArgs.ConcatLasts(args, "AGGREGATE", aggregate.Value.ToString().ToUpperInvariant());
}
return(client.Execute(new RedisInteger(command, args.ToArray())));
}
/// <summary>
/// 阻塞式(blocking)移除并返回列表键的尾元素。
/// </summary>
/// <param name="client">Redis 客户端。</param>
/// <param name="timeout">接受一个以秒为单位的数字作为值。超时参数设为 0 表示阻塞时间可以无限期延长(block indefinitely) 。</param>
/// <param name="keys">按参数键的先后顺序依次检查各个列表，弹出第一个非空列表的尾元素。</param>
/// <returns>在指定时间内，如果列表为空，返回一个 null。否则，返回一个含有键值的元素项。</returns>
public static RedisKeyItem BRPop(this IRedisClient client, long timeout, params string[] keys)
{
if (client == null)
{
throw new ArgumentNullException(nameof(client));
}
if (timeout < 0)
{
throw new ArgumentOutOfRangeException(nameof(timeout));
}
if (keys == null)
{
throw new ArgumentNullException(nameof(keys));
}
if (keys.Length == 0)
{
return(null);
}
var args = RedisArgs.ConcatLast(keys, timeout).ToArray();
return(client.Execute(new RedisItem <RedisKeyItem>(true, "BRPOP", args)));
}
