private void StartSubscription(StartSubscriptionMessage msg)
{
switch (_state)
{
case ConnectionState.Init:
msg.Source.SetException(new InvalidOperationException(string.Format("EventStoreConnection '{0}' is not active.", _esConnection.ConnectionName)));
break;
case ConnectionState.Connecting:
case ConnectionState.Connected:
var operation = new SubscriptionOperation(_settings.Log, msg.Source, msg.StreamId, msg.ResolveLinkTos,
msg.UserCredentials, msg.EventAppeared, msg.SubscriptionDropped,
_settings.VerboseLogging, () => _connection);
LogDebug("StartSubscription {4} {0}, {1}, {2}, {3}.", operation.GetType().Name, operation, msg.MaxRetries, msg.Timeout, _state == ConnectionState.Connected ? "fire" : "enqueue");
var subscription = new SubscriptionItem(operation, msg.MaxRetries, msg.Timeout);
if (_state == ConnectionState.Connecting)
{
_subscriptions.EnqueueSubscription(subscription);
}
else
{
_subscriptions.StartSubscription(subscription, _connection);
}
break;
case ConnectionState.Closed:
msg.Source.SetException(new ObjectDisposedException(_esConnection.ConnectionName));
break;
default: throw new Exception(string.Format("Unknown state: {0}.", _state));
}
}
public void StartSubscription(SubscriptionItem subscription, TcpPackageConnection connection)
{
Ensure.NotNull(connection, "connection");
if (subscription.IsSubscribed)
{
LogDebug("StartSubscription REMOVING due to already subscribed {0}.", subscription);
RemoveSubscription(subscription);
return;
}
subscription.CorrelationId = Guid.NewGuid();
subscription.ConnectionId = connection.ConnectionId;
subscription.LastUpdated = DateTime.UtcNow;
_activeSubscriptions.Add(subscription.CorrelationId, subscription);
if (!subscription.Operation.Subscribe(subscription.CorrelationId, connection))
{
LogDebug("StartSubscription REMOVING AS COULDN'T SUBSCRIBE {0}.", subscription);
RemoveSubscription(subscription);
}
else
{
LogDebug("StartSubscription SUBSCRIBING {0}.", subscription);
}
}
public bool RemoveSubscription(SubscriptionItem subscription)
{
var res = _activeSubscriptions.Remove(subscription.CorrelationId);
LogDebug("RemoveSubscription {0}, result {1}.", subscription, res);
return(res);
}
public void ScheduleSubscriptionRetry(SubscriptionItem subscription)
{
if (!RemoveSubscription(subscription))
{
LogDebug("RemoveSubscription failed when trying to retry {0}.", subscription);
return;
}
if (subscription.MaxRetries >= 0 && subscription.RetryCount >= subscription.MaxRetries)
{
LogDebug("RETRIES LIMIT REACHED when trying to retry {0}.", subscription);
subscription.Operation.DropSubscription(SubscriptionDropReason.SubscribingError,
new RetriesLimitReachedException(subscription.ToString(), subscription.RetryCount));
return;
}
LogDebug("retrying subscription {0}.", subscription);
_retryPendingSubscriptions.Add(subscription);
}
private void StartSubscription(StartSubscriptionMessage msg)
{
switch (_state)
{
case ConnectionState.Init:
msg.Source.SetException(new InvalidOperationException(string.Format("EventStoreConnection '{0}' is not active.", _esConnection.ConnectionName)));
break;
case ConnectionState.Connecting:
case ConnectionState.Connected:
var operation = new SubscriptionOperation(_settings.Log, msg.Source, msg.StreamId, msg.ResolveLinkTos,
msg.UserCredentials, msg.EventAppeared, msg.SubscriptionDropped,
_settings.VerboseLogging, () => _connection);
LogDebug("StartSubscription {4} {0}, {1}, {2}, {3}.", operation.GetType().Name, operation, msg.MaxRetries, msg.Timeout, _state == ConnectionState.Connected ? "fire" : "enqueue");
var subscription = new SubscriptionItem(operation, msg.MaxRetries, msg.Timeout);
if (_state == ConnectionState.Connecting)
_subscriptions.EnqueueSubscription(subscription);
else
_subscriptions.StartSubscription(subscription, _connection);
break;
case ConnectionState.Closed:
msg.Source.SetException(new ObjectDisposedException(_esConnection.ConnectionName));
break;
default: throw new Exception(string.Format("Unknown state: {0}.", _state));
}
}
public bool TryGetActiveSubscription(Guid correlationId, out SubscriptionItem subscription)
{
return _activeSubscriptions.TryGetValue(correlationId, out subscription);
}
public void StartSubscription(SubscriptionItem subscription, TcpPackageConnection connection)
{
Ensure.NotNull(connection, "connection");
if (subscription.IsSubscribed)
{
LogDebug("StartSubscription REMOVING due to already subscribed {0}.", subscription);
RemoveSubscription(subscription);
return;
}
subscription.CorrelationId = Guid.NewGuid();
subscription.ConnectionId = connection.ConnectionId;
subscription.LastUpdated = DateTime.UtcNow;
_activeSubscriptions.Add(subscription.CorrelationId, subscription);
if (!subscription.Operation.Subscribe(subscription.CorrelationId, connection))
{
LogDebug("StartSubscription REMOVING AS COULDN'T SUBSCRIBE {0}.", subscription);
RemoveSubscription(subscription);
}
else
{
LogDebug("StartSubscription SUBSCRIBING {0}.", subscription);
}
}
public void EnqueueSubscription(SubscriptionItem subscriptionItem)
{
_waitingSubscriptions.Enqueue(subscriptionItem);
}
public void ScheduleSubscriptionRetry(SubscriptionItem subscription)
{
if (!RemoveSubscription(subscription))
{
LogDebug("RemoveSubscription failed when trying to retry {0}.", subscription);
return;
}
if (subscription.MaxRetries >= 0 && subscription.RetryCount >= subscription.MaxRetries)
{
LogDebug("RETRIES LIMIT REACHED when trying to retry {0}.", subscription);
subscription.Operation.DropSubscription(SubscriptionDropReason.SubscribingError,
new RetriesLimitReachedException(subscription.ToString(), subscription.RetryCount));
return;
}
LogDebug("retrying subscription {0}.", subscription);
_retryPendingSubscriptions.Add(subscription);
}
public bool RemoveSubscription(SubscriptionItem subscription)
{
var res = _activeSubscriptions.Remove(subscription.CorrelationId);
LogDebug("RemoveSubscription {0}, result {1}.", subscription, res);
return res;
}
public bool TryGetActiveSubscription(Guid correlationId, out SubscriptionItem subscription)
{
return(_activeSubscriptions.TryGetValue(correlationId, out subscription));
}
public void EnqueueSubscription(SubscriptionItem subscriptionItem)
{
_waitingSubscriptions.Enqueue(subscriptionItem);
}