public PhotoResponse Retrieve(PhotoRequest request, PhotoResponse response)
{
PhotoResponse result;
using (new StopwatchPerformanceTracker("MailboxHandlerTotal", request.PerformanceLogger))
{
using (new StorePerformanceTracker("MailboxHandlerTotal", request.PerformanceLogger))
{
if (request.ShouldSkipHandlers(PhotoHandlers.Mailbox))
{
this.tracer.TraceDebug((long)this.GetHashCode(), "MAILBOX HANDLER: skipped by request.");
result = response;
}
else if (response.Served)
{
this.tracer.TraceDebug((long)this.GetHashCode(), "MAILBOX HANDLER: skipped because photo has already been served by an upstream handler.");
result = response;
}
else
{
response.MailboxHandlerProcessed = true;
request.PerformanceLogger.Log("MailboxHandlerProcessed", string.Empty, 1U);
try
{
this.ComputeTargetPrincipalAndStampOntoRequest(request);
if (request.TargetPrincipal == null)
{
this.tracer.TraceDebug((long)this.GetHashCode(), "MAILBOX HANDLER: skipped because target principal has not been initialized and could not be computed.");
result = response;
}
else
{
this.tracer.TraceDebug <ExchangePrincipal, SmtpAddress>((long)this.GetHashCode(), "MAILBOX HANDLER: target principal: {0}; PRIMARY SMTP address: {1}", request.TargetPrincipal, request.TargetPrincipal.MailboxInfo.PrimarySmtpAddress);
using (DisposeGuard disposeGuard = default(DisposeGuard))
{
bool forceReloadThumbprint = true;
IMailboxSession mailboxSession = request.HostOwnedTargetMailboxSessionGetter(request.TargetPrincipal);
if (mailboxSession == null)
{
this.tracer.TraceDebug <ExchangePrincipal>((long)this.GetHashCode(), "MAILBOX HANDLER: opening session to mailbox of user {0}", request.TargetPrincipal);
mailboxSession = this.CreateMailboxSession(request);
disposeGuard.Add <IMailboxSession>(mailboxSession);
forceReloadThumbprint = false;
}
int num = this.ReadThumbprintAndStampOntoResponse(request, response, mailboxSession, forceReloadThumbprint);
this.tracer.TraceDebug <int>((long)this.GetHashCode(), "MAILBOX HANDLER: read photo thumbprint = {0:X8}", num);
if (PhotoThumbprinter.Default.ThumbprintMatchesETag(num, request.ETag))
{
result = this.ServePhotoNotModified(request, response);
}
else
{
result = this.ReadPhotoFromMailboxOntoResponse(request, response, mailboxSession);
}
}
}
}
catch (ObjectNotFoundException ex)
{
request.PerformanceLogger.Log("MailboxHandlerPhotoAvailable", string.Empty, 0U);
if (this.reader.HasPhotoBeenDeleted(ex))
{
result = this.ServePhotoHasBeenDeleted(request, response);
}
else
{
this.tracer.TraceDebug <ObjectNotFoundException>((long)this.GetHashCode(), "MAILBOX HANDLER: photo not found. Exception: {0}", ex);
result = response;
}
}
catch (StorageTransientException arg)
{
this.tracer.TraceError <StorageTransientException>((long)this.GetHashCode(), "MAILBOX HANDLER: transient exception at reading photo. Exception: {0}", arg);
request.PerformanceLogger.Log("MailboxHandlerError", string.Empty, 1U);
throw;
}
catch (StoragePermanentException arg2)
{
this.tracer.TraceError <StoragePermanentException>((long)this.GetHashCode(), "MAILBOX HANDLER: permanent exception at reading photo. Exception: {0}", arg2);
request.PerformanceLogger.Log("MailboxHandlerError", string.Empty, 1U);
throw;
}
}
}
}
return(result);
}
