public static void AddUser <T>(UrlSubscription <T> user)
{
//attempt to get type subscription
SubscriptionsByType subscriptionsByUser;
SubscriptionsByType.TryGetValue(typeof(T), out subscriptionsByUser);
//if unable to get attempt to add
if (subscriptionsByUser == null)
{
subscriptionsByUser = new SubscriptionsByType()
{
SubscriptionType = typeof(T)
};
//add new type subscription
var wasAdded = SubscriptionsByType.TryAdd(typeof(T), subscriptionsByUser);
//if add failed then likely another thread was adding at the same time, try again
if (!wasAdded)
{
AddUser <T>(user);
return;
}
}
//attempt to get user subscription
SubscriptionsByUser subscriptionsByUrl;
subscriptionsByUser.SubscriptionsByUser.TryGetValue(user.ConnectionId, out subscriptionsByUrl);
//if unable to get attempt to add
if (subscriptionsByUrl == null)
{
subscriptionsByUrl = new SubscriptionsByUser()
{
SubscriptionType = typeof(T)
};
//add new type subscription
var wasAdded = subscriptionsByUser.SubscriptionsByUser.TryAdd(user.ConnectionId, subscriptionsByUrl);
//if add failed then likely another thread was adding at the same time, try again
if (!wasAdded)
{
AddUser <T>(user);
return;
}
}
//add or update value with new value
subscriptionsByUrl.SubscriptionsByUrl.AddOrUpdate(user.Url, user, (key, oldValue) => oldValue = user);
}
public static void AddUser(UserSubscription user)
{
// 获取某个主题订阅
SubscriptionsByTopic subscriptionsByTopic;
SubscriptionsByTopic.TryGetValue(user.Topic, out subscriptionsByTopic);
// 如果主题不存在，新添加
if (subscriptionsByTopic == null)
{
subscriptionsByTopic = new SubscriptionsByTopic()
{
Topic = user.Topic
};
var wasAdded = SubscriptionsByTopic.TryAdd(user.Topic, subscriptionsByTopic);
}
// 获取某个主题用户的全部订阅
SubscriptionsByUser subscriptionsByUser;
subscriptionsByTopic.SubscriptionsByUser.TryGetValue(user.ConnectionId, out subscriptionsByUser);
// 主题用户不存在，新添加
if (subscriptionsByUser == null)
{
subscriptionsByUser = new SubscriptionsByUser()
{
ConnectionId = user.ConnectionId,
};
var wasAdded = subscriptionsByTopic.SubscriptionsByUser.TryAdd(user.ConnectionId, subscriptionsByUser);
}
// 用户订阅值同步
subscriptionsByUser.SubscriptionsByTopic.AddOrUpdate(user.Topic, user, (key, oldValue) => oldValue = user);
}
