public static RESTCallHandler getHandler()
{
if (instance == null)
{
instance = new RESTCallHandler();
}
return(instance);
}
public EventNotificationStatus ProcessEvent(TeamFoundationRequestContext requestContext,
NotificationType notificationType,
object notificationEventArgs,
out int statusCode,
out string statusMessage,
out ExceptionPropertyCollection properties)
{
statusCode = 0;
properties = null;
statusMessage = String.Empty;
// TODO: Make impact on performance minimal by optimize logic for understanding if we are interested
// in this event or not. Also put longer running task in Jobs. For now - do basic checks.
if (notificationType != NotificationType.Notification)
{
return(EventNotificationStatus.ActionPermitted);
}
var notification = notificationEventArgs as WorkItemChangedEvent;
if (notification == null)
{
return(EventNotificationStatus.ActionPermitted);
}
// Should not thow exception - if so, the code will be disabled by TFS.
try
{
// Init adapter - will only be done once per deployment of plugin
if (!HandlerSettings.initFromFile())
{
// Fatal error when trying to init - return
// TODO: How allow retry without server restart or re-deploy of plugin?
return(EventNotificationStatus.ActionPermitted);
}
// Handle case where event is fired because of Save we initiated.
if (ignoreSaveEvent(notification))
{
return(EventNotificationStatus.ActionPermitted);
}
int workItemId = notification.CoreFields.IntegerFields[0].NewValue;
HandlerSettings.LogMessage(
String.Format(
"WorkItem with id {0} named '{1}' was saved.",
"" + workItemId,
notification.WorkItemTitle),
HandlerSettings.LoggingLevel.INFO);
// TODO: In examples I have seen you get actual WI by process below, i.e. opening a new connection to TFS.
// I would expect as we already are in the context of a TFS you somehow could use this. Note: There is a
// WorkItem class in the namespace Microsoft.TeamFoundation.WorkItemTracking.Server - no documentation found.
Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItem workItem = getStore().GetWorkItem(workItemId);
// If a new item is based on an existing (copied) we need to reset the connection to any existing TR.
// Note exception if item is created by the functional user. This to allow test case where TR is set
// by test case code.
String user = HandlerSettings.GetSignumForChangeNotification(workItem, notification);
if (notification.ChangeType == ChangeTypes.New)
{
if (!user.Equals(HandlerSettings.TFSProviderUser, StringComparison.OrdinalIgnoreCase))
{
// Note: Will not save - done in event handling or at end.
ECRMapper.disconnectBug(workItem);
}
}
ProductMapper.EventType eventType =
ProductMapper.getInstance().GetEventType(workItem, notification, user);
if (eventType == ProductMapper.EventType.CreateUpdate)
{
// Handle the event as the release is for a maintenance product
RESTCallHandler.getHandler().handleEvent(workItem, user, notification);
}
else if (eventType == ProductMapper.EventType.Disconnect)
{
// Handle the event as the release is for a maintenance product
RESTCallHandler.getHandler().handleDisconnectEvent(workItem, user, notification);
}
else
{
HandlerSettings.LogMessage(
String.Format(
"WorkItem with id {0} save event was ignored by integration.",
"" + workItemId),
HandlerSettings.LoggingLevel.INFO);
}
// If updated but not saved, we need to explicitly call save. Very unusual case but will happen
// e.g. if item is copied with a product value that before was in maintenance but now not. Then
// code to disconnect bug is called, but event not handled or Bug saved, hence save here.
if (workItem.IsDirty)
{
RESTCallHandler.getHandler().saveBug(workItem);
}
}
catch (Exception ex)
{
// Error when reading mapping file - assume fatal
HandlerSettings.LogMessage(
"Error when handling the change of workitem." +
"\nError: " + ex.Message +
"\nStack: " + ex.StackTrace,
HandlerSettings.LoggingLevel.ERROR);
}
return(EventNotificationStatus.ActionPermitted);
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// The file is changed or being changed - lets make sure we can read before proceeding
while (true)
{
try
{
using (Stream stream = System.IO.File.Open(
e.FullPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
{
if (stream != null)
{
LogMessage(
String.Format("File {0} changed, will re-read.", e.FullPath),
LoggingLevel.INFO);
break;
}
}
}
catch (FileNotFoundException ex)
{
LogMessage(
String.Format("File {0} not ready for re-read yet: {1}", e.FullPath, ex.Message),
LoggingLevel.INFO);
}
catch (IOException ex)
{
LogMessage(
String.Format("File {0} not ready for re-read yet: {1}", e.FullPath, ex.Message),
LoggingLevel.INFO);
}
catch (UnauthorizedAccessException ex)
{
LogMessage(
String.Format("File {0} not ready for re-read yet: {1}", e.FullPath, ex.Message),
LoggingLevel.INFO);
}
Thread.Sleep(500);
}
try
{
FileSystemWatcher watcher = (FileSystemWatcher)source;
if (configFileChangeTimes.ContainsKey(watcher))
{
DateTime lastKnownChange = configFileChangeTimes[watcher];
DateTime lastChange = File.GetLastWriteTime(e.FullPath);
if (lastKnownChange == lastChange)
{
// Event originating because of same change - ignore
return;
}
}
// Set new last file write time
configFileChangeTimes[watcher] = File.GetLastWriteTime(e.FullPath);
// Clear cached values
WorkItemChangedEventHandler.clearConnection();
RESTCallHandler.clearHandler();
// Re-initialize by re-reading all config files
initiated = false;
initFromFile();
}
catch (Exception ex)
{
LogMessage(
String.Format("Failed to re-read the property file: {1}", ex.Message),
LoggingLevel.ERROR);
}
}
public static void clearHandler()
{
instance = null;
}