async Task ProcessMessages(IMessage[] messages, EndpointExecutorFsm fsm)
{
SendMessage command = Commands.SendMessage(messages);
await fsm.RunAsync(command);
await command.Completion;
}
public async Task UpdatePriorities(IList <uint> priorities, Option <Endpoint> newEndpoint)
{
Preconditions.CheckArgument(priorities.Count > 0);
Events.UpdatePriorities(this, priorities);
if (this.closed)
{
throw new InvalidOperationException($"Endpoint executor for endpoint {this.Endpoint} is closed.");
}
// Update priorities by merging the new ones with the existing.
// We don't ever remove stale priorities, otherwise stored messages
// pending for a removed priority will never get sent.
ImmutableDictionary <uint, EndpointExecutorFsm> snapshot = this.prioritiesToFsms;
Dictionary <uint, EndpointExecutorFsm> updatedSnapshot = new Dictionary <uint, EndpointExecutorFsm>(snapshot);
foreach (uint priority in priorities)
{
if (!updatedSnapshot.ContainsKey(priority))
{
string id = GetMessageQueueId(this.Endpoint.Id, priority);
// Create a message queue in the store for every priority we have
await this.messageStore.AddEndpoint(id);
// Create a checkpointer and a FSM for every message queue
ICheckpointer checkpointer = await this.checkpointerFactory.CreateAsync(id, this.Endpoint.Id, priority);
EndpointExecutorFsm fsm = new EndpointExecutorFsm(this.Endpoint, checkpointer, this.config);
// Add it to our dictionary
updatedSnapshot.Add(priority, fsm);
}
else
{
// Update the existing FSM with the new endpoint
EndpointExecutorFsm fsm = updatedSnapshot[priority];
await newEndpoint.ForEachAsync(e => fsm.RunAsync(Commands.UpdateEndpoint(e)));
}
}
if (this.prioritiesToFsms.CompareAndSet(snapshot, updatedSnapshot.ToImmutableDictionary()))
{
Events.UpdatePrioritiesSuccess(this, updatedSnapshot.Keys.ToList());
// Update the lastUsedFsm to be the initial one, we always
// have at least one priority->FSM pair at this point.
this.lastUsedFsm = updatedSnapshot[priorities[0]];
}
else
{
Events.UpdatePrioritiesFailure(this, updatedSnapshot.Keys.ToList());
}
}