public static void GetAllSubFolders(ExchangeService service, ExchangeFolder currentFolder, List <ExchangeFolder> folderStore, bool skipEmpty = true)
{
Logger.Debug("Looking for sub folders of '" + currentFolder.FolderPath + "'");
var results = service.FindFolders(currentFolder.Folder.Id, new FolderView(int.MaxValue));
foreach (var folder in results)
{
String folderPath = (String.IsNullOrEmpty(currentFolder.FolderPath)
? ""
: currentFolder.FolderPath + @"\") + folder.DisplayName;
if (currentFolder.IsPublicFolder)
{
folderPath = Regex.Replace(folderPath, @"^Global Public Folder Root\\", @"");
}
if (skipEmpty && folder.TotalCount == 0 && folder.ChildFolderCount == 0)
{
Logger.Debug("Skipping folder " + folderPath + ", no messages, no subfolders.");
continue;
}
Logger.Debug("Found folder " + folderPath + ", " + folder.TotalCount + " messages in total.");
var exchangeFolder = new ExchangeFolder()
{
Folder = folder,
FolderPath = folderPath,
MessageCount = folder.TotalCount,
FolderId = folder.Id,
IsPublicFolder = currentFolder.IsPublicFolder
};
// only add it to the list of folders if it isn't the public folder root
if (!currentFolder.IsPublicFolder || !String.Equals(folder.DisplayName, "Global Public Folder Root"))
{
folderStore.Add(exchangeFolder);
}
if (exchangeFolder.Folder.ChildFolderCount > 0)
{
GetAllSubFolders(service, exchangeFolder, folderStore, skipEmpty);
}
}
}
private bool FindExchangeMessages(ExchangeFolder exchangeFolder, SearchFilter.SearchFilterCollection filter, ItemView view, List <EmailMessage> emails, PropertySet fullPropertySet)
{
int majorFailureCount = 0;
int tryCount = 0;
do
{
emails.Clear();
tryCount++;
var start = Environment.TickCount;
try
{
Logger.Debug("Retrieving next email messages from " + exchangeFolder.FolderPath);
// Get results
FindItemsResults <Item> findResults = exchangeFolder.Folder.FindItems(filter, view);
// Filter out non mail items
foreach (var item in findResults)
{
if (item is EmailMessage)
{
try
{
emails.Add((EmailMessage)item);
if (TestOnly && emails.Count > 20)
{
break;
}
}
catch (Exception e)
{
FailedMessageCount++;
Logger.Error("Failed to extract email message from results, skipping : " + e.Message, e);
}
}
else
{
Logger.Warn("Will not export message, item is not a mail message [" + item.GetType() + "]");
IgnoredMessageCount++;
}
}
if (emails.Count > 0)
{
// Load properties for our final list of mails
Logger.Debug("Retrieving " + emails.Count + " emails properties from " +
exchangeFolder.FolderPath);
service.LoadPropertiesForItems(emails, fullPropertySet);
}
Logger.Debug("Retrieved " + emails.Count + " messages from " + exchangeFolder.FolderPath + " in " + (Environment.TickCount - start) + "ms, trying " + tryCount + " times. " + (findResults.MoreAvailable ? "More" : "No more") + " messages in folder available.");
return(findResults.MoreAvailable && !TestOnly);
}
catch (ServerBusyException e)
{
Logger.Warn(
"Received Server Busy Response (ServerBusyException), will back off and try again after (30s) : " +
e.Message);
Thread.Sleep(30000);
}
catch (XmlException e)
{
Logger.Error("XML Response invalid (XmlException), will attempt again : " +
e.Message);
Thread.Sleep(1000);
}
catch (TimeoutException e)
{
Logger.Error("Request timed out with TimeoutException, will back off and try again after (30s) : " +
e.Message);
Thread.Sleep(30000);
}
catch (ServiceRequestException e)
{
Logger.Error(
"Service request failed with ServiceRequestException, this may not be a permanent error, will back off and try again after (30s) : " +
e.Message);
Thread.Sleep(30000);
} catch (Exception e)
{
majorFailureCount++;
if (majorFailureCount >= 10)
{
throw e;
}
else
{
Logger.Error("Failed to get emails/properties, will attempt " + (10 - majorFailureCount) + " more times after 30s pause.", e);
Thread.Sleep(30000);
}
}
} while(true);
}
