private bool PerformFolderCopyOnWrite(COWSettings settings, IDumpsterItemOperations dumpster, ICoreItem item, MailboxSession sessionWithBestAccess, COWTriggerAction operation, FolderChangeOperationFlags folderChangeOperationFlags, bool copyAfterSave)
{
bool result = false;
if (settings.IsCurrentFolderEnabled(sessionWithBestAccess) || COWCalendarLogging.IsParkedMessagesFolder(settings, sessionWithBestAccess))
{
StoreObjectId storeObjectId = item.StoreObjectId;
this.PerformCopyOnWrite(sessionWithBestAccess, dumpster, storeObjectId);
item.OpenAsReadWrite();
CalendarLoggingHelper.AddMetadata(item, operation, new FolderChangeOperationFlags?(folderChangeOperationFlags));
COWSettings.AddMetadata(settings, item, operation);
this.SaveItem(item, sessionWithBestAccess, operation);
if (copyAfterSave)
{
this.PerformCopyOnWrite(sessionWithBestAccess, dumpster, storeObjectId);
}
result = true;
}
return(result);
}
public void ItemOperation(COWSettings settings, IDumpsterItemOperations dumpster, COWTriggerAction operation, COWTriggerActionState state, StoreSession session, StoreObjectId itemId, CoreItem item, CoreFolder folder, bool onBeforeNotification, OperationResult result, CallbackContext callbackContext)
{
Util.ThrowOnNullArgument(dumpster, "dumpster");
EnumValidator.ThrowIfInvalid <COWTriggerAction>(operation, "operation");
EnumValidator.ThrowIfInvalid <OperationResult>(result, "result");
EnumValidator.ThrowIfInvalid <COWTriggerActionState>(state, "state");
MailboxSession sessionWithBestAccess = callbackContext.SessionWithBestAccess;
if (onBeforeNotification)
{
if (CalendarLoggingHelper.ShouldLog(item, operation))
{
StoreObjectId storeObjectId = ((ICoreObject)item).StoreObjectId;
CalendarLoggingHelper.AddMetadata(item, operation, null);
if (operation == COWTriggerAction.Update && state == COWTriggerActionState.Save && CalendarLoggingHelper.ShouldBeCopiedOnWrite(storeObjectId))
{
if (settings.HoldEnabled() && item.IsLegallyDirty)
{
return;
}
if (!settings.IsCurrentFolderItemEnabled(sessionWithBestAccess, item) && !COWCalendarLogging.IsParkedMessagesFolder(settings, sessionWithBestAccess))
{
return;
}
if (dumpster.IsDumpsterOverCalendarLoggingQuota(sessionWithBestAccess, settings))
{
ExTraceGlobals.CalendarLoggingTracer.Information <string, string>((long)session.GetHashCode(), "User {0} has exceeded the calendar logging quota of {1}", session.UserLegacyDN, settings.CalendarLoggingQuota.Value.ToString("A"));
StorageGlobals.EventLogger.LogEvent(StorageEventLogConstants.Tuple_COWCalendarLoggingStopped, session.UserLegacyDN, new object[]
{
session.UserLegacyDN
});
}
else if (dumpster.IsDumpsterOverWarningQuota(settings))
{
ExTraceGlobals.CalendarLoggingTracer.Information <string, string>((long)session.GetHashCode(), "Disabling calendar logging for user {0}, since it has exceeded the dumpster warning quota of {1}", session.UserLegacyDN, settings.DumpsterWarningQuota.Value.ToString("A"));
dumpster.DisableCalendarLogging();
}
else
{
StoreObjectId calendarLogGeneratedId = this.PerformCopyOnWrite(sessionWithBestAccess, dumpster, storeObjectId);
dumpster.Results.CalendarLogGeneratedId = calendarLogGeneratedId;
}
}
COWSettings.AddMetadata(settings, item, operation);
return;
}
}
else if (operation == COWTriggerAction.Update && state == COWTriggerActionState.Save && result == OperationResult.Failed)
{
dumpster.RollbackItemVersion(sessionWithBestAccess, item, dumpster.Results.CalendarLogGeneratedId);
dumpster.Results.CalendarLogGeneratedId = null;
}
}