/// <summary>
/// This is the one where all the magic starts. Main() so to speak. I will load the settings, connect to tfs and apply the aggregation rules.
/// </summary>
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;
int currentAggregationId = 0;
int workItemId = 0;
string currentAggregationName = string.Empty;
try
{
if (notificationType == NotificationType.Notification && notificationEventArgs is WorkItemChangedEvent)
{
// Change this object to be a type we can easily get into
WorkItemChangedEvent ev = notificationEventArgs as WorkItemChangedEvent;
// Connect to the setting file and load the location of the TFS server
string tfsUri = TFSAggregatorSettings.TFSUri;
// Connect to TFS so we are ready to get and send data.
Store store = new Store(tfsUri);
// Get the id of the work item that was just changed by the user.
workItemId = ev.CoreFields.IntegerFields[0].NewValue;
// Download the work item so we can update it (if needed)
WorkItem eventWorkItem = store.Access.GetWorkItem(workItemId);
string workItemTypeName = eventWorkItem.Type.Name;
List<WorkItem> workItemsToSave = new List<WorkItem>();
if (TFSAggregatorSettings.LoggingIsEnabled)
{
MiscHelpers.LogMessage(String.Format("Change detected to {0} [{1}]", workItemTypeName, workItemId));
MiscHelpers.LogMessage(String.Format("{0}Processing {1} AggregationItems", " ", TFSAggregatorSettings.ConfigAggregatorItems.Count.ToString()));
}
// Apply the aggregation rules to the work item
foreach (ConfigAggregatorItem configAggregatorItem in TFSAggregatorSettings.ConfigAggregatorItems)
{
IEnumerable<WorkItem> sourceWorkItems = null;
WorkItem targetWorkItem = null;
currentAggregationName = configAggregatorItem.Name;
// Check to make sure that the rule applies to the work item type we have
if (eventWorkItem.Type.Name == configAggregatorItem.WorkItemType)
{
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}[Entry {2}] Aggregation '{3}' applies to {1} work items", " ", workItemTypeName, currentAggregationId, currentAggregationName));
// Use the link type to see what the work item we are updating is
if (configAggregatorItem.LinkType == ConfigLinkTypeEnum.Self)
{
// We are updating the same workitem that was sent in the event.
sourceWorkItems = new List<WorkItem> {eventWorkItem};
targetWorkItem = eventWorkItem;
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}{0}Aggregation applies to SELF. ({1} {2})", " ", workItemTypeName, workItemId));
// Make sure that all conditions are true before we do the aggregation
// If any fail then we don't do this aggregation.
if (!configAggregatorItem.Conditions.AreAllConditionsMet(targetWorkItem))
{
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}All conditions for aggregation are not met.", " "));
currentAggregationId++;
continue;
}
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}All conditions for aggregation are met.", " "));
}
// We are aggregating to the parent
else if (configAggregatorItem.LinkType == ConfigLinkTypeEnum.Parent)
{
bool parentLevelFound = true;
// Go up the tree till we find the level of parent that we are looking for.
WorkItem iterateToParent = eventWorkItem;
for (int i = 0; i < configAggregatorItem.LinkLevel; i++)
{
// Load the parent from the saved list (if we have it in there) or just load it from the store.
WorkItem nullCheck = iterateToParent.GetParentFromListOrStore(workItemsToSave, store);
//
if (nullCheck != null)
{
iterateToParent = nullCheck;
}
else
parentLevelFound = false;
}
// If we did not find the correct parent then we are done with this aggregation.
if (!parentLevelFound)
{
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}{0}Couldn't find a PARENT {2} {4} up from {3} [{1}]. This aggregation will not continue.", " ", workItemId, configAggregatorItem.LinkLevel, workItemTypeName, configAggregatorItem.LinkLevel > 1 ? "levels" : "level"));
currentAggregationId++;
continue;
}
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}{0}Found {1} [{2}] {3} {4} up from {5} [{6}]. Aggregation continues.", " ", iterateToParent.Type.Name, iterateToParent.Id, configAggregatorItem.LinkLevel, configAggregatorItem.LinkLevel > 1 ? "levels" : "level", workItemTypeName, workItemId));
targetWorkItem = iterateToParent;
// Make sure that all conditions are true before we do the aggregation
// If any fail then we don't do this aggregation.
if (!configAggregatorItem.Conditions.AreAllConditionsMet(targetWorkItem))
{
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}All conditions for parent aggregation are not met", " "));
currentAggregationId++;
continue;
}
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}{0}All conditions for parent aggregation are met", " "));
// Get the children down how ever many link levels were specified.
List<WorkItem> iterateFromParents = new List<WorkItem> {targetWorkItem};
for (int i = 0; i < configAggregatorItem.LinkLevel; i++)
{
List<WorkItem> thisLevelOfKids = new List<WorkItem>();
// Iterate all the parents to find the children of current set of parents
foreach (WorkItem iterateFromParent in iterateFromParents)
{
thisLevelOfKids.AddRange(iterateFromParent.GetChildrenFromListOrStore(workItemsToSave, store));
}
iterateFromParents = thisLevelOfKids;
}
// remove the kids that are not the right type that we are working with
ConfigAggregatorItem configAggregatorItemClosure = configAggregatorItem;
iterateFromParents.RemoveAll(x => x.Type.Name != configAggregatorItemClosure.WorkItemType);
sourceWorkItems = iterateFromParents;
}
// Do the actual aggregation now
bool changeMade = Aggregator.Aggregate(sourceWorkItems, targetWorkItem, configAggregatorItem);
// If we made a change then add this work item to the list of items to save.
if (changeMade)
{
// Add the target work item to the list of work items to save.
workItemsToSave.AddIfUnique(targetWorkItem);
}
}
else
{
if (TFSAggregatorSettings.LoggingIsEnabled) MiscHelpers.LogMessage(String.Format("{0}[Entry {2}] Aggregation '{3}' does not apply to {1} work items", " ", workItemTypeName, currentAggregationId, currentAggregationName));
}
currentAggregationId++;
}
// Save any changes to the target work items.
workItemsToSave.ForEach(x =>
{
bool isValid = x.IsValid();
if (TFSAggregatorSettings.LoggingIsEnabled)
{
MiscHelpers.LogMessage(String.Format("{0}{0}{0}{1} [{2}] {3} valid to save. {4}",
" ",
x.Type.Name,
x.Id,
isValid ? "IS" : "IS NOT",
String.Format("\n{0}{0}{0}{0}Invalid fields: {1}", " ", MiscHelpers.GetInvalidWorkItemFieldsList(x).ToString())));
}
if (isValid)
{
x.PartialOpen();
x.Save();
}
});
MiscHelpers.AddRunSeparatorToLog();
}
}
catch (Exception e)
{
string message = String.Format("Exception encountered processing Work Item [{2}]: {0} \nStack Trace:{1}", e.Message, e.StackTrace, workItemId);
if (e.InnerException != null)
{
message += String.Format("\n Inner Exception: {0} \nStack Trace:{1}", e.InnerException.Message, e.InnerException.StackTrace);
}
MiscHelpers.LogMessage(message, true);
}
return EventNotificationStatus.ActionPermitted;
}
