/// <summary>
/// 若用户在线则推送消息，不在线返回false
/// </summary>
/// <param name="p_userID"></param>
/// <param name="p_msg"></param>
/// <returns>true 已在线推送，false不在线</returns>
public static async Task <bool> PushIfOnline(long p_userID, MsgInfo p_msg)
{
if (Online.All.TryGetValue(p_userID, out var ls) &&
ls != null &&
ls.Count > 0)
{
// 本地在线推送
ls[0].AddMsg(p_msg.GetOnlineMsg());
return(true);
}
// 查询所有其他副本
int cnt = await Kit.GetSvcReplicaCount();
if (cnt > 1)
{
string key = $"msg:PushIfOnline:{p_userID}:{Guid.NewGuid().ToString().Substring(0, 6)}";
Kit.RemoteMulticast(new OnlinePushEvent
{
PrefixKey = key,
Receivers = new List <long> {
p_userID
},
Msg = p_msg.GetOnlineMsg(),
PushFirstSession = true
});
// 等待收集
int total, retry = 0;
var sc = new StringCache(key);
do
{
await Task.Delay(_delayMilli);
total = await sc.Get <int>("cnt");
retry++;
}while (total < cnt && retry < _maxRetry);
// 删除统计总数
await sc.Delete("cnt");
// 存在键值表示在线
if (await sc.Delete(null))
{
return(true);
}
}
return(false);
}
/// <summary>
/// 向所有副本的所有在线用户广播信息
/// </summary>
/// <param name="p_msg"></param>
public static async Task BroadcastAllOnline(MsgInfo p_msg)
{
Throw.IfNull(p_msg);
var msg = p_msg.GetOnlineMsg();
int cnt = await Kit.GetSvcReplicaCount();
if (cnt > 1)
{
// 多副本推送
Kit.RemoteMulticast(new BroadcastEvent {
Msg = msg
});
}
else
{
// 本地单副本推送
foreach (var ls in Online.All.Values)
{
foreach (var ci in ls)
{
ci.AddMsg(msg);
}
}
}
}
/// <summary>
/// 向用户列表中的在线用户推送信息
/// </summary>
/// <param name="p_userIDs">用户列表</param>
/// <param name="p_msg">待推送信息</param>
/// <returns>在线推送列表</returns>
public static async Task <List <long> > Push(List <long> p_userIDs, MsgInfo p_msg)
{
if (p_userIDs == null || p_userIDs.Count == 0 || p_msg == null)
{
throw new Exception("待推送的用户或信息不可为空！");
}
var onlines = new List <long>();
var offlines = new List <long>();
string onlineMsg = p_msg.GetOnlineMsg();
int cnt = await Kit.GetSvcReplicaCount();
if (cnt > 1)
{
// Msg服务多副本推送
await PushMultipleReplicas(p_userIDs, onlineMsg, onlines, offlines, cnt);
}
else
{
// 本地单副本推送
PushLocal(p_userIDs, onlineMsg, onlines, offlines);
}
// 离线
if (offlines.Count > 0)
{
// 将消息保存到用户的未推送列表
var lc = new ListCache <string>(MsgQueueKey);
foreach (long id in offlines)
{
await lc.RightPush(id, onlineMsg);
}
// 推送离线提醒
if (!string.IsNullOrEmpty(p_msg.Title))
{
Offline.Add(offlines, p_msg);
}
}
return(onlines);
}