/// <summary>
/// 加入订阅
/// </summary>
/// <param name="clientId">客户端id</param>
/// <param name="channel">订阅名称</param>
public void SubscribeChannel(Guid clientId, string channel)
{
string channelKey = RedisKeyFormatUtil.GetSubscribeChannelKey(_appId, channel);
string ClientChannelKey = RedisKeyFormatUtil.GetClientChannelKey(_appId, clientId);
_redis.StartPipe(a => a
.HSet(channelKey, clientId.ToString(), 0)
.HSet(ClientChannelKey, channel, 0)
.HIncrBy(this.ChannelListKey, channel, 1));
}
/// <summary>
/// 取消订阅
/// </summary>
/// <param name="clientId">客户端id</param>
/// <param name="channels">订阅名称</param>
public void UnSubscribeChannel(Guid clientId, params string[] channels)
{
if (channels?.Any() != true)
{
return;
}
using (var pipe = _redis.StartPipe())
{
string ClientChannelKey = RedisKeyFormatUtil.GetClientChannelKey(_appId, clientId);
foreach (var channel in channels)
{
string channelKey = RedisKeyFormatUtil.GetSubscribeChannelKey(_appId, channel);
pipe.HDel(channelKey, clientId.ToString())
.HDel(ClientChannelKey, channel)
.Eval($"if redis.call('HINCRBY', KEYS[1], '{channel}', '-1') <= 0 then redis.call('HDEL', KEYS[1], '{channel}') end return 1",
this.ChannelListKey);
}
}
}
/// <summary>
/// 获取用户参与的所有订阅
/// </summary>
/// <param name="clientId">客户端id</param>
/// <returns></returns>
public string[] GetChanListByClientId(Guid clientId)
{
string ClientChannelKey = RedisKeyFormatUtil.GetClientChannelKey(_appId, clientId);
return(_redis.HKeys(ClientChannelKey));
}
