/// <summary>
/// 订阅
/// </summary>
/// <param name="info"></param>
/// <param name="sessionId"></param>
public void Subscribe(SubscribeInformaction info, string sessionId)
{
var subscribe = Server.MessageStore.GetSubscribe(info.SubscribeId, info.Topic);
var record = new MessageSubscribeRecord()
{
CurrentSessionId = sessionId, SubscribeInformaction = info
};
if (subscribe == null)
{
//先查询是否存在同主题订阅，不存在则向消息队列订阅
if (!Server.MessageStore.HasTopicSubscribe(info.Topic))
{
Server.MessageQueue.Subscribe(info);
}
Server.MessageStore.SaveSubscribe(record);
}
else
{
Server.MessageStore.UpdateSubscribe(record);
}
//异步处理失败推送重试
Task.Factory.StartNew((o) =>
{
var subscribeRecord = (MessageSubscribeRecord)o;
RetryFailedSubscription(subscribeRecord.SubscribeInformaction, subscribeRecord.CurrentSessionId);
}, record);
}
public void UpdateSubscribe(MessageSubscribeRecord record)
{
var db = Connection.GetDatabase();
var json = JsonConvert.SerializeObject(record);
db.HashSet(record.SubscribeInformaction.Topic, record.SubscribeInformaction.SubscribeId, json);
if (MessageSubscribeRecords.ContainsKey(record.SubscribeInformaction.Topic))
{
var subscribe = MessageSubscribeRecords[record.SubscribeInformaction.Topic].FirstOrDefault(o => o.SubscribeInformaction.SubscribeId == record.SubscribeInformaction.SubscribeId);
subscribe.CurrentSessionId = record.CurrentSessionId;
}
}
public void SaveSubscribe(MessageSubscribeRecord record)
{
var db = Connection.GetDatabase();
var json = JsonConvert.SerializeObject(record);
db.ListRightPush("MessageSubscribeRecord", record.SubscribeInformaction.Topic);
db.HashSet(record.SubscribeInformaction.Topic, record.SubscribeInformaction.SubscribeId, json);
if (!MessageSubscribeRecords.ContainsKey(record.SubscribeInformaction.Topic))
{
MessageSubscribeRecords[record.SubscribeInformaction.Topic] = new List <MessageSubscribeRecord>();
}
MessageSubscribeRecords[record.SubscribeInformaction.Topic].Add(record);
}
