private void RegisterChangesTrackingService()
{
Func <ICacheRepository> repositoryFactory = () => new CacheRepositoryImpl(_connectionStringName, new EntityPrimaryKeyGeneratorInterceptor());
var changeTrackingService = new ChangesTrackingService(repositoryFactory);
_container.RegisterInstance <IChangesTrackingService>(changeTrackingService);
var cacheManager = _container.Resolve <ICacheManager <object> >();
var observedRegions = new[] {
StoreServicesDecorator.RegionName,
CatalogServicesDecorator.RegionName,
MemberServicesDecorator.RegionName,
MarketingServicesDecorator.RegionName,
InventoryServicesDecorator.RegionName,
PricingServicesDecorator.RegionName
};
var logger = _container.Resolve <ILog>();
//Need observe cache events to correct update latest changes timestamp when platform running on multiple instances
//Cache clean event will be raising thanks to Redis cache synced invalidation
EventHandler <CacheClearEventArgs> onClearHandler = (sender, args) =>
{
try
{
changeTrackingService.Update(null, DateTime.UtcNow);
}
catch (Exception ex)
{
logger.Error(ex);
}
};
EventHandler <CacheClearRegionEventArgs> onClearRegionHandler = (sender, args) =>
{
if (args.Region != null && observedRegions.Any(x => x.EqualsInvariant(args.Region)))
{
try
{
changeTrackingService.Update(null, DateTime.UtcNow);
}
catch (Exception ex)
{
logger.Error(ex);
}
}
};
//Throttling is required to prevent frequent database updates operations. 10 seconds is set as minimum interval to prevent flooding of database when multiple
//platform instances is running
cacheManager.OnClearRegion += onClearRegionHandler.Throttle(TimeSpan.FromSeconds(10));
cacheManager.OnClear += onClearHandler.Throttle(TimeSpan.FromSeconds(10));
}
private void RegisterChangesTrackingService()
{
Func <ICacheRepository> repositoryFactory = () => new CacheRepositoryImpl(_connectionStringName, new EntityPrimaryKeyGeneratorInterceptor());
var changeTrackingService = new ChangesTrackingService(repositoryFactory);
_container.RegisterInstance <IChangesTrackingService>(changeTrackingService);
var cacheManager = _container.Resolve <ICacheManager <object> >();
var observedRegions = new[] {
StoreServicesDecorator.RegionName,
CatalogServicesDecorator.RegionName,
MemberServicesDecorator.RegionName,
MarketingServicesDecorator.RegionName,
InventoryServicesDecorator.RegionName,
PricingServicesDecorator.RegionName
};
var logger = _container.Resolve <ILog>();
//Need observe cache events to correct update latest changes timestamp when platform running on multiple instances
//Cache clean event will be raising thanks to Redis cache synced invalidation
cacheManager.OnClear += (e, args) =>
{
try
{
changeTrackingService.Update(null, DateTime.UtcNow);
}
catch (Exception ex)
{
logger.Error(ex);
}
};
cacheManager.OnClearRegion += (e, args) =>
{
if (args.Region != null && observedRegions.Any(x => x.EqualsInvariant(args.Region)))
{
try
{
changeTrackingService.Update(null, DateTime.UtcNow);
}
catch (Exception ex)
{
logger.Error(ex);
}
}
};
}