/// <summary> /// Uploads inline image attachment from source to target and returns target inline image AttachmentReference Guid. /// </summary> /// <param name="inlineImageUrl"></param> /// <returns></returns> private async Task <string> UploadInlineImageAttachmentFromSourceWorkItemToTarget(IBatchMigrationContext batchContext, string inlineImageUrl, int sourceWorkItemId, int maxAttachmentSize) { Guid sourceGuid = MigrationHelpers.GetAttachmentUrlGuid(inlineImageUrl); string targetGuid = null; if (Guid.Empty.Equals(sourceGuid)) { Logger.LogWarning(LogDestination.File, $"Unexpected format for inline image url {inlineImageUrl} for source work item {sourceWorkItemId}"); ClientHelpers.AddFailureReasonToWorkItemMigrationState(sourceWorkItemId, FailureReason.InlineImageUrlFormatError, batchContext.WorkItemMigrationState); // just return the null guid since there is nothing we can do with an invalid url return(null); } Stream stream = null; try { Logger.LogTrace(LogDestination.File, $"Reading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); stream = await WorkItemTrackingHelpers.GetAttachmentAsync(this.context.SourceClient.WorkItemTrackingHttpClient, sourceGuid); Logger.LogTrace(LogDestination.File, $"Completed reading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); } catch (Exception e) { Logger.LogError(LogDestination.File, e, $"Unable to download inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); ClientHelpers.AddFailureReasonToWorkItemMigrationState(sourceWorkItemId, FailureReason.InlineImageDownloadError, batchContext.WorkItemMigrationState); // just return the null guid since there is nothing we can do if we couldn't download the inline image return(null); } if (stream != null) { using (MemoryStream memstream = new MemoryStream()) { bool copiedStream = false; using (stream) { try { Logger.LogTrace(LogDestination.File, $"Downloading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); await ClientHelpers.CopyStreamAsync(stream, memstream); Logger.LogTrace(LogDestination.File, $"Completed downloading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); copiedStream = true; } catch (Exception e) { Logger.LogError(LogDestination.File, e, $"Unable to download inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); ClientHelpers.AddFailureReasonToWorkItemMigrationState(sourceWorkItemId, FailureReason.InlineImageDownloadError, batchContext.WorkItemMigrationState); } } if (memstream.Length > maxAttachmentSize) { Logger.LogWarning(LogDestination.File, $"Inline image attachment of source work item with id {sourceWorkItemId} and url {inlineImageUrl} exceeded the maximum attachment size of {maxAttachmentSize} bytes." + $" Skipping creating the inline image attachment in target account."); return(null); } if (copiedStream) { memstream.Position = 0; //upload the attachment to target try { Logger.LogTrace(LogDestination.File, $"Uploading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); var aRef = await WorkItemTrackingHelpers.CreateAttachmentChunkedAsync(this.context.TargetClient.WorkItemTrackingHttpClient, this.context.TargetClient.Connection, memstream, this.context.Config.AttachmentUploadChunkSize); targetGuid = aRef.Id.ToString(); Logger.LogTrace(LogDestination.File, $"Completed uploading inline image {inlineImageUrl} for source work item {sourceWorkItemId} from the source account"); } catch (Exception e) { Logger.LogError(LogDestination.File, e, $"Unable to upload inline image for source work item {sourceWorkItemId} in the target account"); ClientHelpers.AddFailureReasonToWorkItemMigrationState(sourceWorkItemId, FailureReason.InlineImageUploadError, batchContext.WorkItemMigrationState); } } } } return(targetGuid); }