/// <summary>
/// Performs the invalidation if the request has an <see cref="InvalidateCachedInstancesOfAttribute"/> attribute.
/// </summary>
public void Intercept(IColomboRequestHandleInvocation nextInvocation)
{
var invalidateCachedInstancesOfAttributes = nextInvocation.Request.GetCustomAttributes<InvalidateCachedInstancesOfAttribute>();
foreach (var invalidateCachedInstancesOfAttribute in invalidateCachedInstancesOfAttributes)
{
foreach (var responseType in invalidateCachedInstancesOfAttribute.ResponsesTypes)
{
string cacheSegment = null;
var cacheSegmentAttribute = nextInvocation.Request.GetCustomAttribute<CacheSegmentAttribute>();
if (cacheSegmentAttribute != null)
cacheSegment = cacheSegmentAttribute.GetCacheSegment(nextInvocation.Request);
Logger.DebugFormat("Invalidating all responses of type {0} from cache segment {1}", responseType, cacheSegment);
cache.Flush(cacheSegment, responseType);
}
}
nextInvocation.Proceed();
var enableClientCachingAttribute = nextInvocation.Request.GetCustomAttribute<EnableCacheAttribute>();
if (enableClientCachingAttribute == null) return;
var cacheKey = nextInvocation.Request.GetCacheKey();
string cacheSegmentAfter = null;
var cacheSegmentAttributeAfter = nextInvocation.Request.GetCustomAttribute<CacheSegmentAttribute>();
if (cacheSegmentAttributeAfter != null)
cacheSegmentAfter = cacheSegmentAttributeAfter.GetCacheSegment(nextInvocation.Request);
Logger.DebugFormat("Caching {0} in segment {1} with cacheKey {2} for {3}", nextInvocation.Request, cacheSegmentAfter, cacheKey, enableClientCachingAttribute.Duration);
cache.Store(cacheSegmentAfter, cacheKey, nextInvocation.Response, enableClientCachingAttribute.Duration);
}
/// <summary>
/// Monitor the performance.
/// </summary>
public void Intercept(IColomboRequestHandleInvocation invocation)
{
if (invocation == null) throw new ArgumentNullException("invocation");
Contract.EndContractBlock();
var watch = new Stopwatch();
watch.Start();
invocation.Proceed();
watch.Stop();
try
{
var instanceName = invocation.Request.GetGroupName();
using (var numberOfRequestsHandled = PerfCounterFactory.GetPerfCounter(PerfCounter.NumRequestsHandled, instanceName))
numberOfRequestsHandled.Increment();
using (var numberOfRequestsHandledPerSec = PerfCounterFactory.GetPerfCounter(PerfCounter.NumRequestsHandledPerSec, instanceName))
numberOfRequestsHandledPerSec.Increment();
using (var averageDurationForRequestHandling = PerfCounterFactory.GetPerfCounter(PerfCounter.AverageDurationForRequestHandling, instanceName))
averageDurationForRequestHandling.IncrementBy(watch.ElapsedTicks);
using (var averageDurationForRequestHandlingBase = PerfCounterFactory.GetPerfCounter(PerfCounter.AverageDurationForRequestHandlingBase, instanceName))
averageDurationForRequestHandlingBase.Increment();
}
catch (Exception ex)
{
Logger.Warn("Error while computing performance counters values.", ex);
}
}
public RequestHandlerHandleInterceptorInvocation(IRequestHandlerHandleInterceptor interceptor, IColomboRequestHandleInvocation nextInvocation)
{
if (interceptor == null) throw new ArgumentNullException("interceptor");
if (nextInvocation == null) throw new ArgumentNullException("nextInvocation");
Contract.EndContractBlock();
this.interceptor = interceptor;
this.nextInvocation = nextInvocation;
}
public void Intercept(IColomboRequestHandleInvocation nextInvocation)
{
try
{
nextInvocation.Proceed();
}
catch (Exception ex)
{
try
{
var alert = new ExceptionAlert(new[] { nextInvocation.Request }, ex);
Logger.Warn(alert.ToString());
foreach (var alerter in Alerters)
alerter.Alert(alert);
}
catch
{
}
throw;
}
}