/// <summary>
/// Subscribes the given client to messages of a given type.
/// </summary>
/// <param name="subscriber">
/// The subscriber.
/// </param>
/// /// <param name="messageType">
/// The message type.
/// </param>
/// /// <param name="context">
/// The context.
/// </param>
/// <returns>
/// The task
/// </returns>
public Task Subscribe(Subscriber subscriber, MessageType messageType, ContextBag context)
{
var subscriptionKey = new SubscriptionKey(messageType);
var update = new UpdateDefinitionBuilder <Subscription>().AddToSet(s => s.Subscribers, subscriber);
return(this.collection.UpdateOneAsync(
s => s.Id == subscriptionKey,
update,
new UpdateOptions()
{
IsUpsert = true
}));
}
/// <summary>
/// Unsubscribes the given client from messages of given type.
/// </summary>
/// <param name="subscriber">
/// The subscriber.
/// </param>
/// /// <param name="messageType">
/// The message type.
/// </param>
/// /// <param name="context">
/// The context.
/// </param>
/// <returns>
/// The task
/// </returns>
public Task Unsubscribe(Subscriber subscriber, MessageType messageType, ContextBag context)
{
var subscriptionKey = new SubscriptionKey(messageType);
var update = new UpdateDefinitionBuilder <Subscription>().Pull(s => s.Subscribers, subscriber);
return(this.collection.UpdateOneAsync(
s => s.Id == subscriptionKey && s.Subscribers.Contains(subscriber),
update,
new UpdateOptions()
{
IsUpsert = false
}));
}
