/// <summary>
/// Pull notifications specific folders
/// </summary>
/// <param name="folderId">The email folder id</param>
/// <param name="eventTypes">The notification event type</param>
/// <returns>The Event Result</returns>
public GetEventsResults PullNotifications(IEnumerable <FolderId> folderId, params EventType[] eventTypes)
{
PullSubscription subscription = _exchangeService.SubscribeToPullNotifications(folderId, lifeTime, null, eventTypes);
GetEventsResults events = subscription.GetEvents();
return(events);
}
static void SetPullNotifications(ExchangeService service)
{
// Initiate the subscription object, specifying the folder and events.
PullSubscription subscription = service.SubscribeToPullNotifications(
new FolderId[] { WellKnownFolderName.Inbox }, 5, null,
EventType.NewMail, EventType.Created, EventType.Deleted);
// Initiate the GetEvents method for the new subscription.
GetEventsResults events = subscription.GetEvents();
// Handle the results of the GetEvents method.
foreach (ItemEvent itemEvent in events.ItemEvents)
{
switch (itemEvent.EventType)
{
case EventType.NewMail:
EmailMessage message = EmailMessage.Bind(service, itemEvent.ItemId);
break;
case EventType.Created:
Item item = Item.Bind(service, itemEvent.ItemId);
break;
case EventType.Deleted:
Console.WriteLine("Item deleted: " + itemEvent.ItemId.UniqueId);
break;
}
}
}
/// <summary>
/// Pull notifications for all folders
/// </summary>
/// <param name="eventTypes">The notification event type</param>
/// <returns>The Event Result</returns>
public GetEventsResults PullNotifications(params EventType[] eventTypes)
{
PullSubscription subscription = _exchangeService.SubscribeToPullNotificationsOnAllFolders(lifeTime, null, eventTypes);
GetEventsResults events = subscription.GetEvents();
return(events);
}
static ExchangeService GetBinding(ExchangeService service)
{
//Subscribe to Inbox newmail/modified events.
subscriptionInbox = service.SubscribeToPullNotifications(
new FolderId[] { WellKnownFolderName.Inbox }, //Inbox
5, //TimeOut
null,
EventType.NewMail, EventType.Modified); //NewMail or Modified
// Display the service URL.
return service;
}
/// <summary>
/// Call Unsubscribe() and reset the form.
/// </summary>
private void btnUnsubscribe_Click(object sender, EventArgs e)
{
this.CurrentSubscription.Unsubscribe();
this.CurrentSubscription = null;
// Enable/Disable form controls for no active subscription
this.btnUnsubscribe.Enabled = false;
this.btnSubscribe.Enabled = true;
this.btnGetEvents.Enabled = false;
// Reset form elements
this.lstEvents.Items.Clear();
this.lblEventsHeader.Text = string.Empty;
}
private void btnPullSubscribe_Click(object sender, RoutedEventArgs e)
{
ExchangeService service = _context.GetService();
_pullSubscription = service.SubscribeToPullNotifications(new FolderId[] { WellKnownFolderName.Inbox }, 10, null, EventType.NewMail);
txtSubscriptionActivity.Text += "Pull Subscription Created" + Environment.NewLine;
//set up polling
_timer = new DispatcherTimer();
_timer.Interval = TimeSpan.FromSeconds(10);
_timer.Tick += timer_Tick;
_timer.Start();
btnPullSubscribe.IsEnabled = false;
btnPullUnsubscribe.IsEnabled = true;
}
/// <summary>
/// Creates pull subscriptions for all rooms and waits on timer delay to pull subscriptions
/// </summary>
/// <param name="mailboxOwner"></param>
/// <returns></returns>
private async System.Threading.Tasks.Task PullSubscriptionChangesAsync(string mailboxOwner)
{
_traceListener.Trace("SyncProgram", $"PullSubscriptionChangesAsync({mailboxOwner}) starting");
var service = new EWService(EwsToken);
service.SetImpersonation(ConnectingIdType.SmtpAddress, mailboxOwner);
if (_subscriptions == null)
{
_subscriptions = new List <SubscriptionCollection>();
}
var EwsService = new EWService(EwsToken);
EwsService.SetImpersonation(ConnectingIdType.SmtpAddress, mailboxOwner);
// Retreive and Store PullSubscription Details
using (var _context = new EWSDbContext(EWSConstants.Config.Database))
{
foreach (var room in _context.RoomListRoomEntities.Where(w => !string.IsNullOrEmpty(w.Identity)))
{
EntitySubscription dbSubscription = null;
string watermark = null;
if (_context.SubscriptionEntities.Any(rs => rs.SmtpAddress == room.SmtpAddress))
{
dbSubscription = _context.SubscriptionEntities.FirstOrDefault(rs => rs.SmtpAddress == room.SmtpAddress);
watermark = dbSubscription.Watermark;
}
else
{
// newup a subscription to track the watermark
dbSubscription = new EntitySubscription()
{
LastRunTime = DateTime.UtcNow,
SmtpAddress = room.SmtpAddress
};
_context.SubscriptionEntities.Add(dbSubscription);
}
try
{
var roomService = new EWService(EwsToken);
var subscription = roomService.CreatePullSubscription(ConnectingIdType.SmtpAddress, room.SmtpAddress, pollingTimeout, watermark);
// close out the old subscription
dbSubscription.PreviousWatermark = (!string.IsNullOrEmpty(watermark)) ? watermark : null;
dbSubscription.Watermark = subscription.Watermark;
_traceListener.Trace("SyncProgram", $"ListenToRoomReservationChangesAsync.Subscribed to room {room.SmtpAddress}");
_subscriptions.Add(new SubscriptionCollection()
{
Pulling = subscription,
SmtpAddress = room.SmtpAddress
});
var rowChanged = _context.SaveChanges();
_traceListener.Trace("SyncProgram", $"Pull subscription persisted {rowChanged} rows");
}
catch (Microsoft.Exchange.WebServices.Data.ServiceRequestException srex)
{
_traceListener.Trace("SyncProgram", $"Failed to provision subscription {srex.Message}");
throw new Exception($"Subscription could not be created for {room.SmtpAddress} with MSG:{srex.Message}");
}
}
}
try
{
var waitTimer = new TimeSpan(0, 5, 0);
while (!CancellationTokenSource.IsCancellationRequested)
{
var milliseconds = (int)waitTimer.TotalMilliseconds;
using (var _context = new EWSDbContext(EWSConstants.Config.Database))
{
foreach (var item in _subscriptions)
{
bool?ismore = default(bool);
do
{
PullSubscription subscription = item.Pulling;
var events = subscription.GetEvents();
var watermark = subscription.Watermark;
ismore = subscription.MoreEventsAvailable;
var email = item.SmtpAddress;
var databaseItem = _context.SubscriptionEntities.FirstOrDefault(rs => rs.SmtpAddress == email);
// pull last event from stack TODO: need heuristic for how meetings can be stored
var filteredEvents = events.ItemEvents.OrderBy(x => x.TimeStamp);
foreach (ItemEvent ev in filteredEvents)
{
var itemId = ev.ItemId;
try
{
// Send an item event you can bind to
await Messenger.SendQueueO365ChangesAsync(queueSubscription, email, ev);
}
catch (ServiceResponseException ex)
{
_traceListener.Trace("SyncProgram", $"ServiceException: {ex.Message}");
continue;
}
}
databaseItem.Watermark = watermark;
databaseItem.LastRunTime = DateTime.UtcNow;
// Save Database changes
await _context.SaveChangesAsync();
}while (ismore == true);
}
}
_traceListener.Trace("SyncProgram", $"Sleeping at {DateTime.UtcNow} for {milliseconds} milliseconds...");
System.Threading.Thread.Sleep(milliseconds);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
_traceListener.Trace("SyncProgram", $"PullSubscriptionChangesAsync({mailboxOwner}) exiting");
}
public User(string id, string password, string watermark)
{
Id = id;
Service = ExchangeServiceFactory.CreateByNetworkCredential(id, password);
Subscription = PullSubscriptionFactory.Create(Service, watermark);
}
//pull notifications
static void startPullNotification(object param)
{
ews _ews = (ews)param; //need an instance
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "Pullnotification: started"));
int iTimeoutMinutes = 5;
// Subscribe to pull notifications in the Inbox folder, and get notified when
// a new mail is received, when an item or folder is created, or when an item
// or folder is deleted.
PullSubscription subscription = null;
try
{
subscription = _ews._service.SubscribeToPullNotifications(new FolderId[] { WellKnownFolderName.Inbox },
iTimeoutMinutes /* timeOut: the subscription will end if the server is not polled within 5 minutes. */,
null /* watermark: null to start a new subscription. */,
EventType.NewMail);//, EventType.Created, EventType.Deleted);
}
catch (Exception ex)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.error, "Pullnotification: PullSubscription FAILED: " + ex.Message));
}
if (subscription == null)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.error, "Pullnotification: END with no subscription"));
return;
}
try
{
while (_ews._bRunPullThread)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "Pull sleeping " + (iTimeoutMinutes - 1).ToString() + " minutes..."));
int iCount = 0;
do
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.ews_pulse, "ews lives"));
iCount += 5000;
Thread.Sleep(5000);
//Thread.Sleep((iTimeoutMinutes - 1) * 60000);
} while (iCount < 60000);//do not sleep longer than iTimeout or you loose the subscription
// Wait a couple minutes, then poll the server for new events.
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "Pull looking for new mails"));
GetEventsResults events = subscription.GetEvents();
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "Pull processing"));
//to get plain text body only
PropertySet itempropertyset = new PropertySet(BasePropertySet.FirstClassProperties);
itempropertyset.RequestedBodyType = BodyType.Text; //request plain text body
// Loop through all item-related events.
foreach (ItemEvent itemEvent in events.ItemEvents)
{
switch (itemEvent.EventType)
{
case EventType.NewMail:
utils.helpers.addLog("PullNotification: " + "EventType.NewMail");
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "check eMail ..."));
// A new mail has been received. Bind to it
EmailMessage message = EmailMessage.Bind(_ews._service, itemEvent.ItemId, itempropertyset);
bool bDoProcessMail = false;
if (message.Subject.Contains(helpers.filterSubject) && (!message.Subject.Contains("[processed]")))
{
if (message.HasAttachments)
{
//check for endings of attachements
foreach (Attachment att in message.Attachments)
{
if (att.Name.EndsWith(helpers.filterAttachement))
{
bDoProcessMail = true;
continue;
}
}
}
if (bDoProcessMail)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "PullNotification: processMail"));
//create a new IMailMessage from the EmailMessage
MailMsg myMailMsg = new MailMsg(message, _ews._userData.sUser);
_ews._licenseMail.processMail(myMailMsg);
//change subject?
// Bind to the existing item, using the ItemId. This method call results in a GetItem call to EWS.
Item myItem = Item.Bind(_ews._service, itemEvent.ItemId);
myItem.Load();
// Update the Subject of the email.
myItem.Subject += "[processed]";
// Save the updated email. This method call results in an UpdateItem call to EWS.
myItem.Update(ConflictResolutionMode.AlwaysOverwrite);
_ews.OnStateChanged(new StatusEventArgs(StatusType.license_mail, "Pullnotification: email marked"));
}
else
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.other_mail, "PullNotification: mail does not match"));
}
}
break;
case EventType.Created:
// An item was created in the folder. Bind to it.
Item item = Item.Bind(_ews._service, itemEvent.ItemId);
utils.helpers.addLog("PullNotification: " + "EventType.Created " + item.ToString());
break;
case EventType.Deleted:
// An item has been deleted. Output its ID to the console.
utils.helpers.addLog("Item deleted: " + itemEvent.ItemId.UniqueId);
break;
default:
utils.helpers.addLog("PullNotification: " + itemEvent.EventType.ToString());
break;
}
}
// Loop through all folder-related events.
foreach (FolderEvent folderEvent in events.FolderEvents)
{
switch (folderEvent.EventType)
{
case EventType.Created:
// An folder was created. Bind to it.
Folder folder = Folder.Bind(_ews._service, folderEvent.FolderId);
break;
case EventType.Deleted:
// A folder has been deleted. Output its Id to the console.
utils.helpers.addLog("PullNotification: " + folderEvent.FolderId.UniqueId);
break;
default:
utils.helpers.addLog("PullNotification: " + folderEvent.EventType.ToString());
break;
}
}
/*
* // As an alternative, you can also loop through all the events.
* foreach (NotificationEvent notificationEvent in events.AllEvents)
* {
* if (notificationEvent is ItemEvent)
* {
* ItemEvent itemEvent = notificationEvent as ItemEvent;
*
* switch (itemEvent.EventType)
* {
* ...
* }
* }
* else
* {
* FolderEvent folderEvent = notificationEvent as FolderEvent;
*
* switch (folderEvent.EventType)
* {
* ...
* }
* }
* }
*/
}//end while
}
catch (ThreadAbortException)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "PullNotification: ThreadAbortException"));
_ews._bRunPullThread = false;
}
catch (Exception ex)
{
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "PullNotification: Pull Thread Exception:" + ex.Message));
_ews._bRunPullThread = false;
}
try
{
subscription.Unsubscribe();
}
catch (Exception ex)
{
utils.helpers.addExceptionLog("subscriptions unsubscribe exception");
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "PullNotification: subscriptions unsubscribe exception " + ex.Message));
}
subscription = null;
_ews.OnStateChanged(new StatusEventArgs(StatusType.ews_stopped, "ews pull ended"));
_ews.OnStateChanged(new StatusEventArgs(StatusType.none, "PullNotification: Pull ended"));
}
public EWSMailFolder(Folder folder)
{
_folder = folder;
subscription = _folder.Service.SubscribeToPullNotifications(new FolderId[] { folder.Id }, 30, null, EventType.NewMail);
}
/// <summary>
/// Gather form input and create PullSubscription
/// </summary>
private void btnSubscribe_Click(object sender, EventArgs e)
{
//const int DEFAULT_NOTIFICATION_TIMEOUT = 5;
// Convert the check box settings into an array of EventTypes
List <EventType> eventTypes = new List <EventType>();
if (this.chkCopiedEvent.Checked)
{
eventTypes.Add(EventType.Copied);
}
if (this.chkCreatedEvent.Checked)
{
eventTypes.Add(EventType.Created);
}
if (this.chkDeletedEvent.Checked)
{
eventTypes.Add(EventType.Deleted);
}
if (this.chkModifiedEvent.Checked)
{
eventTypes.Add(EventType.Modified);
}
if (this.chkMovedEvent.Checked)
{
eventTypes.Add(EventType.Moved);
}
if (this.chkNewMailEvent.Checked)
{
eventTypes.Add(EventType.NewMail);
}
int TimeOutMinutes = Convert.ToInt32(numMinutes.Value);
if (chkAllFoldes.Checked == false)
{
// Create the subscription based on the form settings
this.CurrentSubscription = this.CurrentService.SubscribeToPullNotifications(
new FolderId[] { this.CurrentFolderId },
TimeOutMinutes,
string.Empty,
eventTypes.ToArray());
}
else
{
// Create the subscription based on the form settings
this.CurrentSubscription = this.CurrentService.SubscribeToPullNotificationsOnAllFolders(
TimeOutMinutes,
string.Empty,
eventTypes.ToArray());
}
// Enable/Disable form controls for an active subscription
this.btnUnsubscribe.Enabled = true;
this.btnSubscribe.Enabled = false;
this.btnGetEvents.Enabled = true;
}
