protected override void CalculateState()

in src/DotPulsar/Internal/ConsumerProcess.cs [42:83]
40 lines of code
12 McCabe index (conditional complexity)

    protected override void CalculateState()
    {
        if (_stateManager.IsFinalState())
            return;

        if (ExecutorState == ExecutorState.Faulted)
        {
            var formerState = _stateManager.SetState(ConsumerState.Faulted);
            if (formerState != ConsumerState.Faulted)
                ActionQueue.Enqueue(async _ => await _subConsumer.ChannelFaulted(Exception!).ConfigureAwait(false));
            return;
        }

        switch (ChannelState)
        {
            case ChannelState.Active:
                _stateManager.SetState(ConsumerState.Active);
                return;
            case ChannelState.Inactive:
                _stateManager.SetState(ConsumerState.Inactive);
                return;
            case ChannelState.ClosedByServer:
            case ChannelState.Disconnected:
                _stateManager.SetState(ConsumerState.Disconnected);
                ActionQueue.Enqueue(async x =>
                {
                    await _subConsumer.CloseChannel(x).ConfigureAwait(false);
                    await _subConsumer.EstablishNewChannel(x).ConfigureAwait(false);
                });
                return;
            case ChannelState.Connected:
                if (!_isFailoverSubscription)
                    _stateManager.SetState(ConsumerState.Active);
                return;
            case ChannelState.ReachedEndOfTopic:
                _stateManager.SetState(ConsumerState.ReachedEndOfTopic);
                return;
            case ChannelState.Unsubscribed:
                _stateManager.SetState(ConsumerState.Unsubscribed);
                return;
        }
    }