feat(core): Improve debugging of sub-workflows (#11602)

packages/@n8n/nodes-langchain/nodes/tools/ToolWorkflow/ToolWorkflow.node.ts

@@ -14,8 +14,10 @@ import type {
 	ISupplyDataFunctions,
 	SupplyData,
 	ExecutionError,
+	ExecuteWorkflowData,
 	IDataObject,
 	INodeParameterResourceLocator,
+	ITaskMetadata,
 } from 'n8n-workflow';
 import { NodeConnectionType, NodeOperationError, jsonParse } from 'n8n-workflow';
 
@@ -358,9 +360,14 @@ export class ToolWorkflow implements INodeType {
 	};
 
 	async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
+		const workflowProxy = this.getWorkflowDataProxy(0);
+
 		const name = this.getNodeParameter('name', itemIndex) as string;
 		const description = this.getNodeParameter('description', itemIndex) as string;
 
+		let subExecutionId: string | undefined;
+		let subWorkflowId: string | undefined;
+
 		const useSchema = this.getNodeParameter('specifyInputSchema', itemIndex) as boolean;
 		let tool: DynamicTool | DynamicStructuredTool | undefined = undefined;
 
@@ -396,11 +403,16 @@ export class ToolWorkflow implements INodeType {
 					) as INodeParameterResourceLocator;
 					workflowInfo.id = value as string;
 				}
+
+				subWorkflowId = workflowInfo.id;
 			} else if (source === 'parameter') {
 				// Read workflow from parameter
 				const workflowJson = this.getNodeParameter('workflowJson', itemIndex) as string;
 				try {
 					workflowInfo.code = JSON.parse(workflowJson) as IWorkflowBase;
+
+					// subworkflow is same as parent workflow
+					subWorkflowId = workflowProxy.$workflow.id;
 				} catch (error) {
 					throw new NodeOperationError(
 						this.getNode(),
@@ -440,13 +452,15 @@ export class ToolWorkflow implements INodeType {
 
 			const items = [newItem] as INodeExecutionData[];
 
-			let receivedData: INodeExecutionData;
+			let receivedData: ExecuteWorkflowData;
 			try {
-				receivedData = (await this.executeWorkflow(
-					workflowInfo,
-					items,
-					runManager?.getChild(),
-				)) as INodeExecutionData;
+				receivedData = await this.executeWorkflow(workflowInfo, items, runManager?.getChild(), {
+					parentExecution: {
+						executionId: workflowProxy.$execution.id,
+						workflowId: workflowProxy.$workflow.id,
+					},
+				});
+				subExecutionId = receivedData.executionId;
 			} catch (error) {
 				// Make sure a valid error gets returned that can by json-serialized else it will
 				// not show up in the frontend
@@ -454,6 +468,7 @@ export class ToolWorkflow implements INodeType {
 			}
 
 			const response: string | undefined = get(receivedData, [
+				'data',
 				0,
 				0,
 				'json',
@@ -503,10 +518,25 @@ export class ToolWorkflow implements INodeType {
 				response = `There was an error: "${executionError.message}"`;
 			}
 
+			let metadata: ITaskMetadata | undefined;
+			if (subExecutionId && subWorkflowId) {
+				metadata = {
+					subExecution: {
+						executionId: subExecutionId,
+						workflowId: subWorkflowId,
+					},
+				};
+			}
+
 			if (executionError) {
-				void this.addOutputData(NodeConnectionType.AiTool, index, executionError);
+				void this.addOutputData(NodeConnectionType.AiTool, index, executionError, metadata);
 			} else {
-				void this.addOutputData(NodeConnectionType.AiTool, index, [[{ json: { response } }]]);
+				void this.addOutputData(
+					NodeConnectionType.AiTool,
+					index,
+					[[{ json: { response } }]],
+					metadata,
+				);
 			}
 			return response;
 		};