private bool SynchronizeFolderItems(MailboxSession mailboxSession, LocalFolder localFolder, ItemSynchronizer itemSynchronizer)
{
bool result = false;
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: Start syncing folder", this);
try
{
while (this.BatchSync(mailboxSession, localFolder, itemSynchronizer))
{
if (this.Deadline.IsOver)
{
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: Timed out while syncing new items.", this);
break;
}
}
}
finally
{
localFolder.DeleteSelectedItems();
}
this.EnforceLevelOfDetails(mailboxSession, localFolder, itemSynchronizer);
localFolder.SaveLevelOfDetails(this.ActualLevelOfDetails);
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: End syncing folder", this);
if (!this.Deadline.IsOver)
{
result = true;
localFolder.UpdateLastSyncTimes();
SharingLog.LogEntry(mailboxSession, "Synchronization completed.");
}
return(result);
}
private BaseFolderType GetFolder(MailboxSession mailboxSession, LocalFolder localFolder)
{
BaseFolderType folder;
try
{
folder = this.ExchangeService.GetFolder(localFolder.RemoteFolderId);
}
catch (FailedCommunicationException ex)
{
SharingEngine.Tracer.TraceDebug <SharingEngine, FailedCommunicationException>((long)this.GetHashCode(), "{0}: GetFolder failed with the following exception: {1}", this, ex);
SharingLog.LogEntry(mailboxSession, "GetFolder failed with the following exception: " + ex);
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: Failure was due connection error which might indicate the EWS endpoint needs update", this);
Uri uri;
try
{
uri = this.Discover();
}
catch (LocalizedException ex2)
{
SharingEngine.Tracer.TraceDebug <SharingEngine, LocalizedException>((long)this.GetHashCode(), "{0}: Unable to discover new EWS endpoint because of exception: {1}", this, ex2);
throw new AutodiscoverFailedException(ex2, ex);
}
if (StringComparer.OrdinalIgnoreCase.Equals(uri.ToString(), this.ExchangeService.Url))
{
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: EWS endpoint continues to be the same, failing with original exception", this);
throw ex;
}
this.ExchangeService.Url = uri.ToString();
folder = this.ExchangeService.GetFolder(localFolder.RemoteFolderId);
SharingLog.LogEntry(mailboxSession, "The Sharing Url for this subscription has been updated to " + uri);
this.UpdateSubscriptionData(mailboxSession, uri);
}
return(folder);
}
private bool SynchronizeFolder(MailboxSession mailboxSession, LocalFolder localFolder, ItemSynchronizer itemSynchronizer)
{
BaseFolderType folder = this.GetFolder(mailboxSession, localFolder);
this.ActualLevelOfDetails = new SharingLevelOfDetails(folder);
this.OriginalLevelOfDetails = new SharingLevelOfDetails(localFolder.LoadLevelOfDetails());
if (this.OriginalLevelOfDetails == LevelOfDetails.None)
{
SharingEngine.Tracer.TraceDebug <SharingEngine, SharingLevelOfDetails>((long)this.GetHashCode(), "{0}: Access level changed from None to {1}. Saving the actual access level.", this, this.ActualLevelOfDetails);
localFolder.SaveLevelOfDetails(this.ActualLevelOfDetails);
}
if (this.ActualLevelOfDetails == LevelOfDetails.None)
{
SharingEngine.Tracer.TraceDebug <LocalFolder>((long)this.GetHashCode(), "{0}: Permissions revoked for this folder.", localFolder);
localFolder.DeleteAllItems();
localFolder.DeleteSyncState();
localFolder.SaveLevelOfDetails(this.ActualLevelOfDetails);
SharingEngine.Tracer.TraceDebug <LocalFolder>((long)this.GetHashCode(), "{0}: All items have been deleted.", localFolder);
SharingLog.LogEntry(mailboxSession, "User no longer has permissions to the publisher's folder. All items have been removed.");
return(true);
}
if (this.ActualLevelOfDetails > this.OriginalLevelOfDetails)
{
SharingEngine.Tracer.TraceDebug <SharingEngine>((long)this.GetHashCode(), "{0}: Permission to the remote folder has increased. Resetting the sync state.", this);
this.SyncState = null;
localFolder.DeleteSyncState();
}
SharingLog.LogEntry(mailboxSession, "Current permissions to the publisher's folder: " + this.ActualLevelOfDetails);
return(this.SynchronizeFolderItems(mailboxSession, localFolder, itemSynchronizer));
}
private bool TrySyncOneItem(MailboxSession mailboxSession, ItemSynchronizer itemSynchronizer, ItemType remoteItem)
{
SharingEngine.Tracer.TraceDebug <SharingEngine, string>((long)this.GetHashCode(), "{0}: Syncing item {1}", this, remoteItem.ItemId.Id);
LocalizedException exception = null;
try
{
Exception syncException = null;
GrayException.MapAndReportGrayExceptions(delegate()
{
try
{
itemSynchronizer.Sync(remoteItem, mailboxSession, this.ExchangeService);
}
catch (FailedCommunicationException syncException)
{
FailedCommunicationException syncException = syncException;
}
catch (StorageTransientException syncException2)
{
FailedCommunicationException syncException = syncException2;
}
catch (ObjectNotFoundException syncException3)
{
FailedCommunicationException syncException = syncException3;
}
catch (RecurrenceException exception2)
{
exception = exception2;
}
catch (TimeZoneException exception3)
{
exception = exception3;
}
catch (ObjectValidationException syncException4)
{
FailedCommunicationException syncException = syncException4;
}
});
if (syncException != null)
{
SharingEngine.Tracer.TraceError <SharingEngine, Exception>((long)this.GetHashCode(), "{0}: Transient failure while syncing an item. Exception: {1}", this, syncException);
throw new BatchSynchronizationFailedException(syncException);
}
}
catch (GrayException exception)
{
GrayException exception4;
exception = exception4;
}
if (exception != null)
{
SharingEngine.Tracer.TraceError <SharingEngine, string, LocalizedException>((long)this.GetHashCode(), "{0}: Error syncing item {1}. Exception: {2}", this, remoteItem.ItemId.Id, exception);
SharingLog.LogEntry(mailboxSession, string.Format("Error syncing item - Subject: {0}, Id: {1}, Exception: {2}", remoteItem.Subject, remoteItem.ItemId.Id, exception));
return(false);
}
return(true);
}
public static bool SyncFolder(MailboxSession mailboxSession, StoreId sharingFolderId, Deadline processingDeadline)
{
if (!SharingEngine.tracker.Start(mailboxSession.MailboxOwner.MailboxInfo.MailboxGuid, sharingFolderId))
{
SharingEngine.Tracer.TraceError <StoreId>(0L, "{0}: Folder is already syncing", sharingFolderId);
throw new PendingSynchronizationException();
}
bool result = true;
SharingEngine sharingEngine = null;
LocalFolder localFolder = null;
ItemSynchronizer itemSynchronizer = null;
try
{
SharingLog.LogEntry(mailboxSession, "Starting sync for folder " + sharingFolderId);
localFolder = SharingEngine.GetLocalFolder(mailboxSession, sharingFolderId);
localFolder.UpdateLastAttemptedSyncTime();
itemSynchronizer = SharingEngine.CreateItemSynchronizer(mailboxSession, localFolder);
sharingEngine = SharingEngine.Create(mailboxSession, sharingFolderId);
result = sharingEngine.Execute(mailboxSession, localFolder, itemSynchronizer, processingDeadline);
}
catch (Exception arg)
{
SharingLog.LogEntry(mailboxSession, string.Format("Synchronization finished unexpectedly due to the following error: {0}, External Url {1}", arg, (sharingEngine != null && sharingEngine.ExchangeService != null) ? sharingEngine.ExchangeService.Url : "Not specified"));
throw;
}
finally
{
SharingEngine.UnblockFolderSync(mailboxSession.MailboxOwner.MailboxInfo.MailboxGuid, sharingFolderId);
if (itemSynchronizer != null)
{
itemSynchronizer = null;
}
if (localFolder != null)
{
localFolder.Dispose();
localFolder = null;
}
if (sharingEngine != null)
{
sharingEngine.Dispose();
}
}
return(result);
}
private bool BatchSync(MailboxSession mailboxSession, LocalFolder localFolder, ItemSynchronizer itemSynchronizer)
{
List <ItemIdType> list = new List <ItemIdType>();
if (string.IsNullOrEmpty(this.SyncState))
{
this.SyncState = localFolder.LoadSyncState();
}
Changes changes = this.ExchangeService.GetChanges(128, this.SyncState);
if (changes == null)
{
SharingEngine.Tracer.TraceDebug <LocalFolder>((long)this.GetHashCode(), "{0}: Unable to retrieve changes", localFolder);
return(false);
}
SharingEngine.Tracer.TraceDebug <SharingEngine, int>((long)this.GetHashCode(), "{0}: Called SyncFolderItems. Got {1} changes", this, changes.Items.Length);
foreach (ItemChange itemChange in changes.Items)
{
switch (itemChange.ChangeType)
{
case ItemChangeType.Create:
case ItemChangeType.Update:
list.Add(itemChange.Id);
break;
case ItemChangeType.Delete:
{
StoreId localIdFromRemoteId = localFolder.GetLocalIdFromRemoteId(itemChange.Id.Id);
if (localIdFromRemoteId != null)
{
localFolder.SelectItemToDelete(localIdFromRemoteId);
}
break;
}
}
}
if (list.Count > 0)
{
SharingEngine.Tracer.TraceDebug <SharingEngine, int>((long)this.GetHashCode(), "{0}: Processing {1} creates/updates", this, list.Count);
IEnumerable <ItemType> item = this.ExchangeService.GetItem(list.ToArray(), localFolder.Type);
if (item != null)
{
int num = 0;
foreach (ItemType remoteItem in item)
{
if (this.Deadline.IsOver)
{
SharingEngine.Tracer.TraceError <SharingEngine>((long)this.GetHashCode(), "{0}: run out of time for completing the sync", this);
return(true);
}
if (!this.TrySyncOneItem(mailboxSession, itemSynchronizer, remoteItem))
{
num++;
SharingEngine.Tracer.TraceError <SharingEngine, int>((long)this.GetHashCode(), "{0}: Item failed to sync. Total number of failures during this batch: {1}.", this, num);
if (num == 30)
{
SharingEngine.Tracer.TraceError <SharingEngine>((long)this.GetHashCode(), "{0}: Too many items have failed. Ending batch loop.", this);
break;
}
}
}
SharingLog.LogEntry(mailboxSession, string.Format("Synchronized {0} out of {1} items during this batch.", list.Count - num, list.Count));
if (num == list.Count || num == 30)
{
SharingEngine.Tracer.TraceError <SharingEngine>((long)this.GetHashCode(), "{0}: Excessive errors while processing batch. Sync state will not be saved.", this);
throw new BatchSynchronizationFailedException();
}
}
}
localFolder.SaveSyncState(changes.SyncState);
this.SyncState = changes.SyncState;
return(changes.MoreChangesAvailable);
}
