public TriggerService(ITriggerDiscoveryService triggerDiscoveryService, ICascadeStrategy cascadingStrategy, ILoggerFactory loggerFactory, IOptions <TriggerOptions> triggerOptions)
{
_triggerDiscoveryService = triggerDiscoveryService ?? throw new ArgumentNullException(nameof(triggerDiscoveryService));
_cascadingStrategy = cascadingStrategy ?? throw new ArgumentNullException(nameof(cascadingStrategy));
_loggerFactory = loggerFactory ?? throw new ArgumentNullException(nameof(loggerFactory));
_defaultConfiguration = new TriggerSessionConfiguration(false, triggerOptions.Value.MaxCascadeCycles);
Configuration = _defaultConfiguration;
}
public IEnumerable <IEnumerable <TriggerContextDescriptor> > Discover(TriggerSessionConfiguration configuration, TriggerContextTracker tracker, ILogger logger)
{
var changes = tracker.DiscoveredChanges ?? throw new InvalidOperationException("Trigger discovery process has not yet started. Please ensure that TriggerSession.DiscoverChanges() or TriggerSession.RaiseBeforeSaveTriggers() has been called");
if (logger.IsEnabled(LogLevel.Debug))
{
_changesDetected(logger, changes.Count(), _name, null);
}
return(Enumerable.Repeat(changes, 1));
}
public IEnumerable <IEnumerable <TriggerContextDescriptor> > Discover(TriggerSessionConfiguration configuration, TriggerContextTracker tracker, ILogger logger)
{
var maxCascadingCycles = configuration.MaxCascadeCycles;
_discoveryStarted(logger, _name, maxCascadingCycles, null);
var iteration = 0;
while (true)
{
if (iteration > maxCascadingCycles)
{
throw new InvalidOperationException("MaxCascadingCycle was reached");
}
var changes = tracker.DiscoverChanges();
// In case someone made a call to TriggerSession.DetectChanges, prior to calling RaiseBeforeSaveTriggers, we want to make sure that we include that discovery result in the first iteration
if (iteration == 0 && !_skipDetectedChanges)
{
changes = tracker.DiscoveredChanges !;
}
if (changes.Any())
{
if (logger.IsEnabled(LogLevel.Debug))
{
changes = changes.ToList();
_changesDetected(logger, changes.Count(), _name, iteration, maxCascadingCycles, null);
}
yield return(changes);
}
else
{
break;
}
iteration++;
}
}
public ITriggerSession CreateSession(DbContext context, TriggerSessionConfiguration configuration, IServiceProvider serviceProvider = null) => throw new NotImplementedException();