private XmlDocument CreateAttachmentDescriptionDoc(TfsMigrationFileAttachment f, string revision)
{
Debug.Assert(!string.IsNullOrEmpty(revision));
XmlDocument migrationActionDetails = new XmlDocument();
XmlElement root = migrationActionDetails.CreateElement("WorkItemChanges");
root.SetAttribute("WorkItemID", XmlConvert.ToString(WorkItem.Id));
root.SetAttribute("Revision", revision);
root.SetAttribute("WorkItemType", WorkItem.Type.Name);
migrationActionDetails.AppendChild(root);
XmlElement c = migrationActionDetails.CreateElement("Attachment");
c.SetAttribute("Name", f.Name);
c.SetAttribute("Length", XmlConvert.ToString(f.Length));
c.SetAttribute("UtcCreationDate", XmlConvert.ToString(f.UtcCreationDate, XmlDateTimeSerializationMode.Unspecified));
c.SetAttribute("UtcLastWriteDate", XmlConvert.ToString(f.UtcLastWriteDate, XmlDateTimeSerializationMode.Unspecified));
XmlElement v = migrationActionDetails.CreateElement("Comment");
v.InnerText = f.Comment;
c.AppendChild(v);
root.AppendChild(c);
return(migrationActionDetails);
}
internal void ComputeAttachmentDelta(
ChangeGroupService changeGroupService,
DateTime waterMarkChangeStartTime,
ITranslationService translationService,
Guid sourceId,
List <ChangeGroup> groups)
{
List <TfsMigrationFileAttachment> files = new List <TfsMigrationFileAttachment>();
if (WorkItem.Attachments.Count > 0)
{
List <Revision> revsToBeSynced = FindUnsyncedRevisions(waterMarkChangeStartTime,
translationService,
sourceId,
null);
bool hasAttachmentChanges = false;
foreach (Revision rev in revsToBeSynced)
{
if (rev.Index == 0 &&
(int)rev.Fields[CoreField.AttachedFileCount].Value > 0)
{
hasAttachmentChanges = true;
break;
}
if (rev.Index > 0)
{
int currAttchCount = (int)rev.Fields[CoreField.AttachedFileCount].Value;
Revision prevRev = rev.WorkItem.Revisions[rev.Index - 1];
int prevAttchCount = (int)prevRev.Fields[CoreField.AttachedFileCount].Value;
if (currAttchCount != prevAttchCount)
{
hasAttachmentChanges = true;
break;
}
}
}
if (!hasAttachmentChanges)
{
return;
}
foreach (Attachment attachment in WorkItem.Attachments)
{
if (attachment.AttachedTimeUtc <= waterMarkChangeStartTime ||
!attachment.IsSaved)
{
continue;
}
files.Add(new TfsMigrationFileAttachment(attachment));
}
}
Guid changeActionId = WellKnownChangeActionId.AddAttachment;
ChangeGroup changeGroup = changeGroupService.CreateChangeGroupForDeltaTable(
string.Format("{0}:{1}", WorkItem.Id, "Attachments"));
foreach (TfsMigrationFileAttachment attachmentFile in files)
{
XmlDocument migrationActionDetails = CreateAttachmentDescriptionDoc(attachmentFile, WorkItem.Rev.ToString());
changeGroup.CreateAction(
changeActionId,
attachmentFile,
WorkItem.Id.ToString(),
"",
"0",
"",
WellKnownContentType.WorkItem.ReferenceName,
migrationActionDetails);
}
// VERY IMPORTANT: use the RelatedArtifactsStore to detect detailed attachment changes
WorkItemAttachmentStore store = new WorkItemAttachmentStore(sourceId);
List <FileAttachmentMetadata> additionalAttachmentToDelete;
store.UpdatePerItemAttachmentChangesByCheckingRelatedItemRecords(
WorkItem.Id.ToString(), changeGroup, out additionalAttachmentToDelete);
foreach (FileAttachmentMetadata attch in additionalAttachmentToDelete)
{
TfsMigrationFileAttachment attachmentFile = new TfsMigrationFileAttachment(attch);
XmlDocument migrationActionDetails = CreateAttachmentDescriptionDoc(attachmentFile, WorkItem.Rev.ToString());
changeGroup.CreateAction(
WellKnownChangeActionId.DelAttachment,
attachmentFile,
WorkItem.Id.ToString(),
"",
"0",
"",
WellKnownContentType.WorkItem.ReferenceName,
migrationActionDetails);
}
groups.Add(changeGroup);
}