public async Task HandleMessages(CancellationToken token)
{
await Task.Run(async() =>
{
while (!token.IsCancellationRequested)
{
try
{
_logger?.LogDebug("Fetching... ");
var messages = await _client.FetchMessages();
_logger?.LogInformation($"Fetched {messages.Count()} messages.");
try
{
foreach (var message in messages)
{
_logger?.LogDebug("Categorizing message... ");
try
{
var category = _categorizer.Categorize(message);
_logger?.LogInformation($"Categorized message as {category.ToString()}.");
_logger?.LogDebug("Processing message... ");
switch (category)
{
case MessageCategory.Incoming:
await _mailman.ForwardEmail(message)
.ConfigureAwait(false);
break;
}
_logger?.LogDebug("Done.");
_logger?.LogDebug("Mark for deletion... ");
await _client.PermitDeletion(message);
_logger?.LogInformation("Marked for deletion.");
}
catch (Exception ex)
{
_logger?.LogError(ex, ex.Message);
}
}
}
finally
{
await _client.DisconnectSmtp();
}
_logger?.LogDebug("Deleting messages... ");
await _client.DeleteMessages()
.ConfigureAwait(false);
_logger?.LogInformation("Deleted messages.");
}
catch (Exception ex)
{
_logger?.LogError(ex, ex.Message);
}
try
{
_logger?.LogDebug("Entering sleep... ");
await Task.Delay(10000, token);
_logger?.LogDebug("Continuing.");
}
catch (TaskCanceledException)
{
break;
}
}
}).ConfigureAwait(false);
}