public async Task <IEnumerable <JsonPatchOperation> > Process(IMigrationContext migrationContext, IBatchMigrationContext batchContext, WorkItem sourceWorkItem, WorkItem targetWorkItem)
{
IList <JsonPatchOperation> jsonPatchOperations = new List <JsonPatchOperation>();
if (sourceWorkItem.Relations == null)
{
return(jsonPatchOperations);
}
IEnumerable <WorkItemRelation> sourceAttachmentWorkItemRelations = GetAttachmentWorkItemRelations(sourceWorkItem.Relations);
if (sourceAttachmentWorkItemRelations.Any())
{
foreach (WorkItemRelation sourceAttachmentWorkItemRelation in sourceAttachmentWorkItemRelations)
{
WorkItemRelation targetAttachmentRelation = GetAttachmentIfExistsOnTarget(targetWorkItem, sourceAttachmentWorkItemRelation);
if (targetAttachmentRelation != null) // is on target
{
JsonPatchOperation attachmentAddOperation = MigrationHelpers.GetRelationAddOperation(targetAttachmentRelation);
jsonPatchOperations.Add(attachmentAddOperation);
}
else // is not on target
{
AttachmentLink attachmentLink = await UploadAttachmentFromSourceRelation(migrationContext, batchContext, sourceWorkItem, sourceAttachmentWorkItemRelation, migrationContext.Config.MaxAttachmentSize);
if (attachmentLink != null)
{
WorkItemRelation newAttachmentWorkItemRelation = new WorkItemRelation();
newAttachmentWorkItemRelation.Rel = sourceAttachmentWorkItemRelation.Rel;
newAttachmentWorkItemRelation.Url = attachmentLink.AttachmentReference.Url;
newAttachmentWorkItemRelation.Attributes = new Dictionary <string, object>();
newAttachmentWorkItemRelation.Attributes[Constants.RelationAttributeName] = attachmentLink.FileName;
newAttachmentWorkItemRelation.Attributes[Constants.RelationAttributeResourceSize] = attachmentLink.ResourceSize;
newAttachmentWorkItemRelation.Attributes[Constants.RelationAttributeComment] = attachmentLink.Comment;
JsonPatchOperation attachmentAddOperation = MigrationHelpers.GetRelationAddOperation(newAttachmentWorkItemRelation);
jsonPatchOperations.Add(attachmentAddOperation);
}
}
}
}
return(jsonPatchOperations);
}
public static JsonPatchOperation GetRevisionHistoryAttachmentAddOperation(AttachmentLink attachmentLink, int workItemId)
{
JsonPatchOperation jsonPatchOperation = new JsonPatchOperation();
jsonPatchOperation.Operation = Operation.Add;
jsonPatchOperation.Path = $"/{Constants.Relations}/-";
jsonPatchOperation.Value = new WorkItemRelation
{
Rel = Constants.AttachedFile,
Url = attachmentLink.AttachmentReference.Url,
Attributes = new Dictionary <string, object>
{
{ Constants.RelationAttributeName, attachmentLink.FileName },
{ Constants.RelationAttributeResourceSize, attachmentLink.ResourceSize },
{ Constants.RelationAttributeComment, attachmentLink.Comment }
}
};
return(jsonPatchOperation);
}