public AccountSampleEventWriter(SampleEventKey sampleEventKey, IServerStreamWriter <SampleEventArgsMessage> responseStream,
LogControl logControl, Action <SampleEventKey> removeAction)
{
_sampleEventKey = sampleEventKey;
_responseStream = responseStream;
_logControl = logControl;
_removeAction = removeAction;
_account = Accounts.RequireAccount(_sampleEventKey.AccountName);
_account.SampleEvent += AccountOnSampleEvent;
}
public override async Task Subscribe(IAsyncStreamReader <SubscribeRequest> requestStream, IServerStreamWriter <SampleEventArgsMessage> responseStream, ServerCallContext context)
{
var requesterHeader = context.RequestHeaders.FirstOrDefault(x => x.Key == Constants.Requester.ToLower()); // Must be lower case. Ugh!
var peer = context.Peer;
var requester = requesterHeader == null ? $"Anonymous@{peer}" : $"{requesterHeader.Value}@{peer}";
while (await requestStream.MoveNext())
{
var request = requestStream.Current;
var key = new SampleEventKey(request.AccountName, requester);
if (request.StartStop)
{
var writer = new AccountSampleEventWriter(key, responseStream, _logControl, RemoveWriter);
_eventWriters.TryAdd(key, writer);
OnAccountNameAdded(request.AccountName);
_logControl.LogMessage($"Added subscription to SampleEvents for {AccountNameAdded}");
}
else
{
RemoveWriter(key);
return;
}
}
}
private void RemoveWriter(SampleEventKey key)
{
_eventWriters.TryRemove(key, out _);
OnAccountNameRemoved(key.AccountName);
_logControl.LogMessage($"Removed subscription to SampleEvents for {AccountNameAdded}");
}