protected override async Task ExecuteAsync(
CancellationToken stoppingToken
)
{
while (!stoppingToken.IsCancellationRequested)
{
try
{
_log.Trace("Running feed task (FeedHostedService.ExecuteAsync)...");
await _feedService.ProcessFeeds();
_log.Trace($"Waiting {_feedCheckInterval:g} for next run...");
_feedMonitor.SetNextFeedCheck(DateTimeOffset.Now + _feedCheckInterval);
await Task.Delay(_feedCheckInterval, stoppingToken);
if (stoppingToken.IsCancellationRequested)
{
_log.Info("FeedHostedService.ExecuteAsync stopped while delaying on service execution cancellation token.");
}
_log.Trace("Done running feed task (FeedHostedService.ExecuteAsync).");
}
catch (Exception exception)
{
_log.Error($"Error when executing feed task (FeedHostedService.ExecuteAsync): {exception}");
}
}
_log.Info("FeedHostedService.ExecuteAsync exiting due to service execution cancellation token cancellation requested.");
}
public FeedBackgroundService(IFeedService feedService, IConfiguration configuration, IFeedMonitor feedMonitor)
{
_feedMonitor = feedMonitor;
_feedService = feedService;
_log = LogManager.GetLogger("Feeds");
if (!TimeSpan.TryParse(configuration["Page2Feed:FeedCheckInterval"], out _feedCheckInterval))
{
throw new ArgumentException(
"Could not parse feed check interval",
"Page2Feed:FeedCheckInterval"
);
}
#if DEBUG
_feedCheckInterval = TimeSpan.FromSeconds(5);
#endif
_feedMonitor.SetNextFeedCheck(DateTimeOffset.Now + _feedCheckInterval);
}