private static void ExecuteForcedFeeding([NotNull] EventFeed eventFeed, TimeSpan delayUpperBound)
{
try
{
lock (eventFeed)
eventFeed.ExecuteForcedFeeding(delayUpperBound);
}
catch (Exception)
{
eventFeed.Shutdown();
throw;
}
}
private void RunFeed([NotNull] EventFeed eventFeed, TimeSpan delayBetweenIterations, CancellationToken cancellationToken)
{
periodicJobRunner.RunPeriodicJobWithLeaderElection(FormatFeedJobName(eventFeed),
delayBetweenIterations,
jobAction: jobCancellationToken => ExecuteFeeding(eventFeed, jobCancellationToken),
onTakeTheLead: () =>
{
eventFeed.Initialize();
return(eventFeed);
},
onLoseTheLead: () =>
{
eventFeed.Shutdown();
return(eventFeed);
},
cancellationToken);
}
private void RunFeeds([CanBeNull] string singleLeaderElectionKey, TimeSpan delayBetweenIterations, [NotNull, ItemNotNull] IBlade[] blades, CancellationToken cancellationToken)
{
if (!blades.Any())
{
throw new InvalidOperationException("No feeds to run");
}
if (string.IsNullOrEmpty(singleLeaderElectionKey))
{
foreach (var blade in blades)
{
var eventFeed = new EventFeed(feedKey: blade.BladeId.BladeKey, new[] { blade });
RunFeed(eventFeed, delayBetweenIterations, cancellationToken);
runningFeeds.Add(eventFeed);
}
}
else
{
var eventFeed = new EventFeed(feedKey: singleLeaderElectionKey, blades);
RunFeed(eventFeed, delayBetweenIterations, cancellationToken);
runningFeeds.Add(eventFeed);
}
}
private static void ExecuteFeeding([NotNull] EventFeed eventFeed, CancellationToken cancellationToken)
{
lock (eventFeed)
eventFeed.ExecuteFeeding(cancellationToken);
}
private static string FormatFeedJobName([NotNull] EventFeed eventFeed)
{
return($"{eventFeed.FeedKey}-PeriodicJob");
}