1167 lines
58 KiB
JavaScript
1167 lines
58 KiB
JavaScript
/* eslint-disable @typescript-eslint/prefer-nullish-coalescing */
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/* eslint-disable @typescript-eslint/no-this-alias */
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/* eslint-disable @typescript-eslint/no-unsafe-return */
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import { ApplicationError } from '@n8n/errors';
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import * as jmespath from 'jmespath';
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import { DateTime, Duration, Interval, Settings } from 'luxon';
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import { augmentArray, augmentObject } from './augment-object';
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import { AGENT_LANGCHAIN_NODE_TYPE, SCRIPTING_NODE_TYPES } from './constants';
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import { ExpressionError } from './errors/expression.error';
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import { getGlobalState } from './global-state';
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import { NodeConnectionTypes } from './interfaces';
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import * as NodeHelpers from './node-helpers';
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import { createResultError, createResultOk } from './result';
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import { isResourceLocatorValue } from './type-guards';
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import { deepCopy, isObjectEmpty } from './utils';
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import { createEnvProvider, createEnvProviderState } from './workflow-data-proxy-env-provider';
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import { getPinDataIfManualExecution } from './workflow-data-proxy-helpers';
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const isScriptingNode = (nodeName, workflow) => {
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const node = workflow.getNode(nodeName);
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return node && SCRIPTING_NODE_TYPES.includes(node.type);
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};
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const PAIRED_ITEM_METHOD = {
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PAIRED_ITEM: 'pairedItem',
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ITEM_MATCHING: 'itemMatching',
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ITEM: 'item',
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$GET_PAIRED_ITEM: '$getPairedItem',
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};
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export class WorkflowDataProxy {
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workflow;
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runIndex;
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itemIndex;
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activeNodeName;
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siblingParameters;
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mode;
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additionalKeys;
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executeData;
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defaultReturnRunIndex;
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selfData;
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contextNodeName;
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envProviderState;
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runExecutionData;
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connectionInputData;
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timezone;
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// TODO: Clean that up at some point and move all the options into an options object
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constructor(workflow, runExecutionData, runIndex, itemIndex, activeNodeName, connectionInputData, siblingParameters, mode, additionalKeys, executeData, defaultReturnRunIndex = -1, selfData = {}, contextNodeName = activeNodeName, envProviderState) {
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this.workflow = workflow;
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this.runIndex = runIndex;
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this.itemIndex = itemIndex;
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this.activeNodeName = activeNodeName;
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this.siblingParameters = siblingParameters;
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this.mode = mode;
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this.additionalKeys = additionalKeys;
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this.executeData = executeData;
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this.defaultReturnRunIndex = defaultReturnRunIndex;
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this.selfData = selfData;
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this.contextNodeName = contextNodeName;
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this.envProviderState = envProviderState;
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this.runExecutionData = isScriptingNode(this.contextNodeName, workflow)
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? runExecutionData !== null
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? augmentObject(runExecutionData)
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: null
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: runExecutionData;
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this.connectionInputData = isScriptingNode(this.contextNodeName, workflow)
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? augmentArray(connectionInputData)
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: connectionInputData;
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this.timezone = workflow.settings?.timezone ?? getGlobalState().defaultTimezone;
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Settings.defaultZone = this.timezone;
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}
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/**
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* Returns a proxy which allows to query context data of a given node
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*
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* @private
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* @param {string} nodeName The name of the node to get the context from
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*/
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nodeContextGetter(nodeName) {
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const that = this;
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const node = this.workflow.nodes[nodeName];
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if (!that.runExecutionData?.executionData && that.connectionInputData.length > 0) {
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return {}; // incoming connection has pinned data, so stub context object
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}
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if (!that.runExecutionData?.executionData && !that.runExecutionData?.resultData) {
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throw new ExpressionError("The workflow hasn't been executed yet, so you can't reference any context data", {
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runIndex: that.runIndex,
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itemIndex: that.itemIndex,
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type: 'no_execution_data',
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});
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}
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return new Proxy({}, {
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has: () => true,
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ownKeys(target) {
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if (Reflect.ownKeys(target).length === 0) {
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// Target object did not get set yet
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Object.assign(target, NodeHelpers.getContext(that.runExecutionData, 'node', node));
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}
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return Reflect.ownKeys(target);
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},
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getOwnPropertyDescriptor() {
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return {
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enumerable: true,
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configurable: true,
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};
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},
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get(_, name) {
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if (name === 'isProxy')
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return true;
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name = name.toString();
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const contextData = NodeHelpers.getContext(that.runExecutionData, 'node', node);
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return contextData[name];
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},
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});
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}
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selfGetter() {
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const that = this;
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return new Proxy({}, {
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has: () => true,
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ownKeys(target) {
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return Reflect.ownKeys(target);
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},
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get(_, name) {
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if (name === 'isProxy')
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return true;
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name = name.toString();
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return that.selfData[name];
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},
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});
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}
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buildAgentToolInfo(node) {
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const nodeType = this.workflow.nodeTypes.getByNameAndVersion(node.type, node.typeVersion);
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const type = nodeType.description.displayName;
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const params = NodeHelpers.getNodeParameters(nodeType.description.properties, node.parameters, true, false, node, nodeType.description);
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const resourceKey = params?.resource;
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const operationKey = params?.operation;
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const resource = nodeType.description.properties
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.find((nodeProperties) => nodeProperties.name === 'resource')
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?.options?.find((option) => 'value' in option && option.value === resourceKey)?.name ??
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null;
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const operation = nodeType.description.properties
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.find((nodeProperty) => nodeProperty.name === 'operation' &&
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nodeProperty.displayOptions?.show?.resource?.some((y) => y === resourceKey))
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?.options?.find((y) => 'value' in y && y.value === operationKey)?.name ?? null;
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const hasCredentials = !isObjectEmpty(node.credentials ?? {});
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const hasValidCalendar = nodeType.description.name.includes('googleCalendar')
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? isResourceLocatorValue(node.parameters.calendar) && node.parameters.calendar.value !== ''
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: undefined;
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const aiDefinedFields = Object.entries(node.parameters)
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.map(([key, value]) => [key, isResourceLocatorValue(value) ? value.value : value])
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.filter(([_, value]) => value?.toString().toLowerCase().includes('$fromai'))
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.map(([key]) => nodeType.description.properties.find((property) => property.name === key)?.displayName);
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return {
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name: node.name,
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type,
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resource,
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operation,
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hasCredentials,
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hasValidCalendar,
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aiDefinedFields,
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};
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}
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agentInfo() {
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const agentNode = this.workflow.getNode(this.activeNodeName);
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if (!agentNode || agentNode.type !== AGENT_LANGCHAIN_NODE_TYPE)
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return undefined;
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const connectedTools = this.workflow
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.getParentNodes(this.activeNodeName, NodeConnectionTypes.AiTool)
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.map((nodeName) => this.workflow.getNode(nodeName))
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.filter((node) => node);
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const memoryConnectedToAgent = this.workflow.getParentNodes(this.activeNodeName, NodeConnectionTypes.AiMemory).length > 0;
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const allTools = this.workflow.queryNodes((nodeType) => {
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return nodeType.description.name.toLowerCase().includes('tool');
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});
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const unconnectedTools = allTools
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.filter((node) => this.workflow.getChildNodes(node.name, NodeConnectionTypes.AiTool, 1).length === 0)
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.filter((node) => !connectedTools.includes(node));
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return {
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memoryConnectedToAgent,
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tools: [
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...connectedTools.map((node) => ({ connected: true, ...this.buildAgentToolInfo(node) })),
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...unconnectedTools.map((node) => ({ connected: false, ...this.buildAgentToolInfo(node) })),
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],
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};
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}
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/**
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* Returns a proxy which allows to query parameter data of a given node
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*
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* @private
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* @param {string} nodeName The name of the node to query data from
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* @param {boolean} [resolveValue=true] If the expression value should get resolved
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*/
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nodeParameterGetter(nodeName, resolveValue = true) {
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const that = this;
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const node = this.workflow.nodes[nodeName];
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// `node` is `undefined` only in expressions in credentials
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return new Proxy(node?.parameters ?? {}, {
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has: () => true,
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ownKeys(target) {
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return Reflect.ownKeys(target);
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},
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getOwnPropertyDescriptor() {
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return {
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enumerable: true,
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configurable: true,
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};
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},
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get(target, name) {
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if (name === 'isProxy')
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return true;
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if (name === 'toJSON')
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return () => deepCopy(target);
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name = name.toString();
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let returnValue;
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if (name[0] === '&') {
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const key = name.slice(1);
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if (!that.siblingParameters.hasOwnProperty(key)) {
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throw new ApplicationError('Could not find sibling parameter on node', {
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extra: { nodeName, parameter: key },
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});
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}
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returnValue = that.siblingParameters[key];
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}
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else {
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if (!node.parameters.hasOwnProperty(name)) {
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// Parameter does not exist on node
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return undefined;
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}
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returnValue = node.parameters[name];
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}
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// Avoid recursion
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if (returnValue === `={{ $parameter.${name} }}`)
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return undefined;
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if (isResourceLocatorValue(returnValue)) {
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if (returnValue.__regex && typeof returnValue.value === 'string') {
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const expr = new RegExp(returnValue.__regex);
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const extracted = expr.exec(returnValue.value);
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if (extracted && extracted.length >= 2) {
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returnValue = extracted[1];
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}
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else {
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return returnValue.value;
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}
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}
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else {
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returnValue = returnValue.value;
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}
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}
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if (resolveValue && typeof returnValue === 'string' && returnValue.charAt(0) === '=') {
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// The found value is an expression so resolve it
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return that.workflow.expression.getParameterValue(returnValue, that.runExecutionData, that.runIndex, that.itemIndex, that.activeNodeName, that.connectionInputData, that.mode, that.additionalKeys, that.executeData, false, {}, that.contextNodeName);
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}
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return returnValue;
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},
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});
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}
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getNodeExecutionOrPinnedData({ nodeName, branchIndex, runIndex, shortSyntax = false, }) {
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try {
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return this.getNodeExecutionData(nodeName, shortSyntax, branchIndex, runIndex);
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}
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catch (e) {
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const pinData = getPinDataIfManualExecution(this.workflow, nodeName, this.mode);
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if (pinData) {
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return pinData;
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}
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throw e;
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}
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}
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/**
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* Returns the node ExecutionData
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*
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* @private
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* @param {string} nodeName The name of the node query data from
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* @param {boolean} [shortSyntax=false] If short syntax got used
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* @param {number} [outputIndex] The index of the output, if not given the first one gets used
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* @param {number} [runIndex] The index of the run, if not given the current one does get used
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*/
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getNodeExecutionData(nodeName, shortSyntax = false, outputIndex, runIndex) {
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const that = this;
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let executionData;
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if (!shortSyntax) {
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// Long syntax got used to return data from node in path
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if (that.runExecutionData === null) {
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throw new ExpressionError("The workflow hasn't been executed yet, so you can't reference any output data", {
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runIndex: that.runIndex,
|
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itemIndex: that.itemIndex,
|
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});
|
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}
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if (!that.workflow.getNode(nodeName)) {
|
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throw new ExpressionError("Referenced node doesn't exist", {
|
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runIndex: that.runIndex,
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itemIndex: that.itemIndex,
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nodeCause: nodeName,
|
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descriptionKey: 'nodeNotFound',
|
||
});
|
||
}
|
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if (!that.runExecutionData.resultData.runData.hasOwnProperty(nodeName) &&
|
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!getPinDataIfManualExecution(that.workflow, nodeName, that.mode)) {
|
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throw new ExpressionError(`Node '${nodeName}' hasn't been executed`, {
|
||
messageTemplate: 'An expression references this node, but the node is unexecuted. Consider re-wiring your nodes or checking for execution first, i.e. {{ $if( $("{{nodeName}}").isExecuted, <action_if_executed>, "") }}',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeName, that.workflow)
|
||
? 'pairedItemNoConnectionCodeNode'
|
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: 'pairedItemNoConnection',
|
||
type: 'no_execution_data',
|
||
nodeCause: nodeName,
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
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||
});
|
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}
|
||
runIndex = runIndex === undefined ? that.defaultReturnRunIndex : runIndex;
|
||
runIndex =
|
||
runIndex === -1 ? that.runExecutionData.resultData.runData[nodeName].length - 1 : runIndex;
|
||
if (that.runExecutionData.resultData.runData[nodeName].length <= runIndex) {
|
||
throw new ExpressionError(`Run ${runIndex} of node "${nodeName}" not found`, {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
const taskData = that.runExecutionData.resultData.runData[nodeName][runIndex].data;
|
||
if (!taskData.main?.length || taskData.main[0] === null) {
|
||
// throw new ApplicationError('No data found for item-index', { extra: { itemIndex } });
|
||
throw new ExpressionError('No data found from `main` input', {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
// Check from which output to read the data.
|
||
// Depends on how the nodes are connected.
|
||
// (example "IF" node. If node is connected to "true" or to "false" output)
|
||
if (outputIndex === undefined) {
|
||
const nodeConnection = that.workflow.getNodeConnectionIndexes(that.contextNodeName, nodeName, NodeConnectionTypes.Main);
|
||
if (nodeConnection === undefined) {
|
||
throw new ExpressionError(`connect "${that.contextNodeName}" to "${nodeName}"`, {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
outputIndex = nodeConnection.sourceIndex;
|
||
}
|
||
if (outputIndex === undefined) {
|
||
outputIndex = 0;
|
||
}
|
||
if (taskData.main.length <= outputIndex) {
|
||
throw new ExpressionError(`Node "${nodeName}" has no branch with index ${outputIndex}.`, {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
executionData = taskData.main[outputIndex];
|
||
}
|
||
else {
|
||
// Short syntax got used to return data from active node
|
||
executionData = that.connectionInputData;
|
||
}
|
||
return executionData;
|
||
}
|
||
/**
|
||
* Returns a proxy which allows to query data of a given node
|
||
*
|
||
* @private
|
||
* @param {string} nodeName The name of the node query data from
|
||
* @param {boolean} [shortSyntax=false] If short syntax got used
|
||
* @param {boolean} [throwOnMissingExecutionData=true] If an error should get thrown if no execution data is available
|
||
*/
|
||
nodeDataGetter(nodeName, shortSyntax = false, throwOnMissingExecutionData = true) {
|
||
const that = this;
|
||
const node = this.workflow.nodes[nodeName];
|
||
return new Proxy({ binary: undefined, data: undefined, json: undefined }, {
|
||
has: () => true,
|
||
get(target, name, receiver) {
|
||
if (name === 'isProxy')
|
||
return true;
|
||
name = name.toString();
|
||
if (!node) {
|
||
throw new ExpressionError('Referenced node does not exist', {
|
||
messageTemplate: 'Make sure to double-check the node name for typos',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeName, that.workflow)
|
||
? 'pairedItemNoConnectionCodeNode'
|
||
: 'pairedItemNoConnection',
|
||
type: 'paired_item_no_connection',
|
||
nodeCause: nodeName,
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
if (['binary', 'data', 'json'].includes(name)) {
|
||
const executionData = that.getNodeExecutionOrPinnedData({
|
||
nodeName,
|
||
shortSyntax,
|
||
});
|
||
if (executionData.length === 0 && !throwOnMissingExecutionData) {
|
||
return undefined;
|
||
}
|
||
// Ultra-simple execution-based validation: if no execution data exists, throw error
|
||
if (executionData.length === 0) {
|
||
throw new ExpressionError(`Node '${nodeName}' hasn't been executed`, {
|
||
messageTemplate: 'An expression references this node, but the node is unexecuted. Consider re-wiring your nodes or checking for execution first, i.e. {{ $if( $("{{nodeName}}").isExecuted, <action_if_executed>, "") }}',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeName, that.workflow)
|
||
? 'pairedItemNoConnectionCodeNode'
|
||
: 'pairedItemNoConnection',
|
||
type: 'no_execution_data',
|
||
nodeCause: nodeName,
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
if (executionData.length <= that.itemIndex) {
|
||
throw new ExpressionError(`"${nodeName}" node has ${executionData.length} item(s) but you're trying to access item ${that.itemIndex}`, {
|
||
messageTemplate: 'Adjust your expression to access an existing item index (0-{{maxIndex}})',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: 'pairedItemInvalidIndex',
|
||
type: 'no_execution_data',
|
||
nodeCause: nodeName,
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
if (['data', 'json'].includes(name)) {
|
||
// JSON-Data
|
||
return executionData[that.itemIndex].json;
|
||
}
|
||
if (name === 'binary') {
|
||
// Binary-Data
|
||
const returnData = {};
|
||
if (!executionData[that.itemIndex].binary) {
|
||
return returnData;
|
||
}
|
||
const binaryKeyData = executionData[that.itemIndex].binary;
|
||
for (const keyName of Object.keys(binaryKeyData)) {
|
||
returnData[keyName] = {};
|
||
const binaryData = binaryKeyData[keyName];
|
||
for (const propertyName in binaryData) {
|
||
if (propertyName === 'data') {
|
||
// Skip the data property
|
||
continue;
|
||
}
|
||
returnData[keyName][propertyName] = binaryData[propertyName];
|
||
}
|
||
}
|
||
return returnData;
|
||
}
|
||
}
|
||
else if (name === 'context') {
|
||
return that.nodeContextGetter(nodeName);
|
||
}
|
||
else if (name === 'parameter') {
|
||
// Get node parameter data
|
||
return that.nodeParameterGetter(nodeName);
|
||
}
|
||
else if (name === 'runIndex') {
|
||
if (!that.runExecutionData?.resultData.runData[nodeName]) {
|
||
return -1;
|
||
}
|
||
return that.runExecutionData.resultData.runData[nodeName].length - 1;
|
||
}
|
||
return Reflect.get(target, name, receiver);
|
||
},
|
||
});
|
||
}
|
||
prevNodeGetter() {
|
||
const allowedValues = ['name', 'outputIndex', 'runIndex'];
|
||
const that = this;
|
||
return new Proxy({}, {
|
||
has: () => true,
|
||
ownKeys() {
|
||
return allowedValues;
|
||
},
|
||
getOwnPropertyDescriptor() {
|
||
return {
|
||
enumerable: true,
|
||
configurable: true,
|
||
};
|
||
},
|
||
get(target, name, receiver) {
|
||
if (name === 'isProxy')
|
||
return true;
|
||
if (!that.executeData?.source) {
|
||
// Means the previous node did not get executed yet
|
||
return undefined;
|
||
}
|
||
const sourceData = that.executeData.source.main[0];
|
||
if (name === 'name') {
|
||
return sourceData.previousNode;
|
||
}
|
||
if (name === 'outputIndex') {
|
||
return sourceData.previousNodeOutput || 0;
|
||
}
|
||
if (name === 'runIndex') {
|
||
return sourceData.previousNodeRun || 0;
|
||
}
|
||
return Reflect.get(target, name, receiver);
|
||
},
|
||
});
|
||
}
|
||
/**
|
||
* Returns a proxy to query data from the workflow
|
||
*
|
||
* @private
|
||
*/
|
||
workflowGetter() {
|
||
const allowedValues = ['active', 'id', 'name'];
|
||
const that = this;
|
||
return new Proxy({}, {
|
||
has: () => true,
|
||
ownKeys() {
|
||
return allowedValues;
|
||
},
|
||
getOwnPropertyDescriptor() {
|
||
return {
|
||
enumerable: true,
|
||
configurable: true,
|
||
};
|
||
},
|
||
get(target, name, receiver) {
|
||
if (name === 'isProxy')
|
||
return true;
|
||
if (allowedValues.includes(name.toString())) {
|
||
const value = that.workflow[name];
|
||
if (value === undefined && name === 'id') {
|
||
throw new ExpressionError('save workflow to view', {
|
||
description: 'Please save the workflow first to use $workflow',
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
return value;
|
||
}
|
||
return Reflect.get(target, name, receiver);
|
||
},
|
||
});
|
||
}
|
||
/**
|
||
* Returns a proxy to query data of all nodes
|
||
*
|
||
* @private
|
||
*/
|
||
nodeGetter() {
|
||
const that = this;
|
||
return new Proxy({}, {
|
||
has: () => true,
|
||
get(_, name) {
|
||
if (name === 'isProxy')
|
||
return true;
|
||
const nodeName = name.toString();
|
||
if (that.workflow.getNode(nodeName) === null) {
|
||
throw new ExpressionError("Referenced node doesn't exist", {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
nodeCause: nodeName,
|
||
descriptionKey: 'nodeNotFound',
|
||
});
|
||
}
|
||
return that.nodeDataGetter(nodeName);
|
||
},
|
||
});
|
||
}
|
||
/**
|
||
* Returns the data proxy object which allows to query data from current run
|
||
*
|
||
*/
|
||
getDataProxy(opts) {
|
||
const that = this;
|
||
// replacing proxies with the actual data.
|
||
const jmespathWrapper = (data, query) => {
|
||
if (typeof data !== 'object' || typeof query !== 'string') {
|
||
throw new ExpressionError('expected two arguments (Object, string) for this function', {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
if (!Array.isArray(data) && typeof data === 'object') {
|
||
return jmespath.search({ ...data }, query);
|
||
}
|
||
return jmespath.search(data, query);
|
||
};
|
||
const createExpressionError = (message, context) => {
|
||
if (isScriptingNode(that.activeNodeName, that.workflow) && context?.functionOverrides) {
|
||
// If the node in which the error is thrown is a function node,
|
||
// display a different error message in case there is one defined
|
||
message = context.functionOverrides.message || message;
|
||
context.description = context.functionOverrides.description || context.description;
|
||
// The error will be in the code and not on an expression on a parameter
|
||
// so remove the messageTemplate as it would overwrite the message
|
||
context.messageTemplate = undefined;
|
||
}
|
||
if (context?.nodeCause) {
|
||
const nodeName = context.nodeCause;
|
||
const pinData = getPinDataIfManualExecution(that.workflow, nodeName, that.mode);
|
||
if (pinData) {
|
||
if (!context) {
|
||
context = {};
|
||
}
|
||
message = `Unpin '${nodeName}' to execute`;
|
||
context.messageTemplate = undefined;
|
||
context.descriptionKey = 'pairedItemPinned';
|
||
}
|
||
if (context.moreInfoLink && (pinData || isScriptingNode(nodeName, that.workflow))) {
|
||
const moreInfoLink = ' <a target="_blank" href="https://docs.n8n.io/data/data-mapping/data-item-linking/item-linking-errors/">More info</a>';
|
||
context.description += moreInfoLink;
|
||
if (context.descriptionTemplate)
|
||
context.descriptionTemplate += moreInfoLink;
|
||
}
|
||
}
|
||
return new ExpressionError(message, {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
...context,
|
||
});
|
||
};
|
||
const createInvalidPairedItemError = ({ nodeName }) => {
|
||
return createExpressionError("Can't get data for expression", {
|
||
messageTemplate: 'Expression info invalid',
|
||
functionality: 'pairedItem',
|
||
functionOverrides: {
|
||
message: "Can't get data",
|
||
},
|
||
nodeCause: nodeName,
|
||
descriptionKey: 'pairedItemInvalidInfo',
|
||
type: 'paired_item_invalid_info',
|
||
});
|
||
};
|
||
const createMissingPairedItemError = (nodeCause, usedMethodName = PAIRED_ITEM_METHOD.PAIRED_ITEM) => {
|
||
const pinData = getPinDataIfManualExecution(that.workflow, nodeCause, that.mode);
|
||
const message = pinData
|
||
? `Using the ${usedMethodName} method doesn't work with pinned data in this scenario. Please unpin '${nodeCause}' and try again.`
|
||
: `Paired item data for ${usedMethodName} from node '${nodeCause}' is unavailable. Ensure '${nodeCause}' is providing the required output.`;
|
||
return new ExpressionError(message, {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeCause, that.workflow)
|
||
? 'pairedItemNoInfoCodeNode'
|
||
: 'pairedItemNoInfo',
|
||
nodeCause,
|
||
causeDetailed: `Missing pairedItem data (node '${nodeCause}' probably didn't supply it)`,
|
||
type: 'paired_item_no_info',
|
||
});
|
||
};
|
||
const createNoConnectionError = (nodeCause) => {
|
||
return createExpressionError('Invalid expression', {
|
||
messageTemplate: 'No path back to referenced node',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeCause, that.workflow)
|
||
? 'pairedItemNoConnectionCodeNode'
|
||
: 'pairedItemNoConnection',
|
||
type: 'paired_item_no_connection',
|
||
moreInfoLink: true,
|
||
nodeCause,
|
||
});
|
||
};
|
||
function createBranchNotFoundError(node, item, cause) {
|
||
return createExpressionError('Branch not found', {
|
||
messageTemplate: 'Paired item references non-existent branch',
|
||
functionality: 'pairedItem',
|
||
nodeCause: cause,
|
||
functionOverrides: { message: 'Invalid branch reference' },
|
||
description: `Item ${item} in node ${node} references a branch that doesn't exist.`,
|
||
type: 'paired_item_invalid_info',
|
||
});
|
||
}
|
||
function createPairedItemNotFound(destNode, cause) {
|
||
return createExpressionError('Paired item resolution failed', {
|
||
messageTemplate: 'Unable to find paired item source',
|
||
functionality: 'pairedItem',
|
||
nodeCause: cause,
|
||
functionOverrides: { message: 'Data not found' },
|
||
description: `Could not trace back to node '${destNode}'`,
|
||
type: 'paired_item_no_info',
|
||
moreInfoLink: true,
|
||
});
|
||
}
|
||
function createPairedItemMultipleItemsFound(destNode, itemIndex) {
|
||
return createExpressionError('Multiple matches found', {
|
||
messageTemplate: `Multiple matching items for item [${itemIndex}]`,
|
||
functionality: 'pairedItem',
|
||
functionOverrides: { message: 'Multiple matches' },
|
||
nodeCause: destNode,
|
||
descriptionKey: isScriptingNode(destNode, that.workflow)
|
||
? 'pairedItemMultipleMatchesCodeNode'
|
||
: 'pairedItemMultipleMatches',
|
||
type: 'paired_item_multiple_matches',
|
||
});
|
||
}
|
||
function normalizeInputs(pairedItem, sourceData) {
|
||
if (typeof pairedItem === 'number') {
|
||
pairedItem = { item: pairedItem };
|
||
}
|
||
const finalSource = pairedItem.sourceOverwrite || sourceData;
|
||
return [pairedItem, finalSource];
|
||
}
|
||
function pinDataToTask(pinData) {
|
||
if (!pinData)
|
||
return undefined;
|
||
return {
|
||
data: { main: [pinData] },
|
||
startTime: 0,
|
||
executionTime: 0,
|
||
executionIndex: 0,
|
||
source: [],
|
||
};
|
||
}
|
||
function getTaskData(source) {
|
||
return (that.runExecutionData?.resultData?.runData?.[source.previousNode]?.[source.previousNodeRun || 0] ??
|
||
pinDataToTask(getPinDataIfManualExecution(that.workflow, source.previousNode, that.mode)));
|
||
}
|
||
function getNodeOutput(taskData, source, nodeCause) {
|
||
const outputIndex = source.previousNodeOutput || 0;
|
||
const outputs = taskData?.data?.main?.[outputIndex];
|
||
if (!outputs) {
|
||
throw createExpressionError('Can’t get data for expression', {
|
||
messageTemplate: 'Missing output data',
|
||
functionOverrides: { message: 'Missing output' },
|
||
nodeCause,
|
||
description: `Expected output #${outputIndex} from node ${source.previousNode}`,
|
||
type: 'internal',
|
||
});
|
||
}
|
||
return outputs;
|
||
}
|
||
const normalizePairedItem = (paired) => {
|
||
if (paired === null || paired === undefined) {
|
||
return [];
|
||
}
|
||
const pairedItems = Array.isArray(paired) ? paired : [paired];
|
||
return pairedItems.map((p) => (typeof p === 'number' ? { item: p } : p));
|
||
};
|
||
const getPairedItem = (destinationNodeName, incomingSourceData, initialPairedItem, usedMethodName = PAIRED_ITEM_METHOD.$GET_PAIRED_ITEM, nodeBeforeLast) => {
|
||
// Normalize inputs
|
||
const [pairedItem, sourceData] = normalizeInputs(initialPairedItem, incomingSourceData);
|
||
if (!sourceData) {
|
||
throw createPairedItemNotFound(destinationNodeName, nodeBeforeLast);
|
||
}
|
||
const taskData = getTaskData(sourceData);
|
||
const outputData = getNodeOutput(taskData, sourceData, nodeBeforeLast);
|
||
const item = outputData[pairedItem.item];
|
||
const sourceArray = taskData?.source ?? [];
|
||
// Done: reached the destination node in the ancestry chain
|
||
if (sourceData.previousNode === destinationNodeName) {
|
||
if (pairedItem.item >= outputData.length) {
|
||
throw createInvalidPairedItemError({ nodeName: sourceData.previousNode });
|
||
}
|
||
return item;
|
||
}
|
||
// Normalize paired item to always be IPairedItemData[]
|
||
const nextPairedItems = normalizePairedItem(item.pairedItem);
|
||
if (nextPairedItems.length === 0) {
|
||
throw createMissingPairedItemError(sourceData.previousNode, usedMethodName);
|
||
}
|
||
// Recursively traverse ancestry to find the destination node + paired item
|
||
const results = nextPairedItems.flatMap((nextPairedItem) => {
|
||
const inputIndex = nextPairedItem.input ?? 0;
|
||
if (inputIndex >= sourceArray.length)
|
||
return [];
|
||
const nextSource = nextPairedItem.sourceOverwrite ?? sourceArray[inputIndex];
|
||
try {
|
||
return createResultOk(getPairedItem(destinationNodeName, nextSource, { ...nextPairedItem, input: inputIndex }, usedMethodName, sourceData.previousNode));
|
||
}
|
||
catch (error) {
|
||
return createResultError(error);
|
||
}
|
||
});
|
||
if (results.every((result) => !result.ok)) {
|
||
throw results[0].error;
|
||
}
|
||
const matchedItems = results.filter((result) => result.ok).map((result) => result.result);
|
||
if (matchedItems.length === 0) {
|
||
if (sourceArray.length === 0)
|
||
throw createNoConnectionError(destinationNodeName);
|
||
throw createBranchNotFoundError(sourceData.previousNode, pairedItem.item, nodeBeforeLast);
|
||
}
|
||
const [first, ...rest] = matchedItems;
|
||
if (rest.some((r) => r !== first)) {
|
||
throw createPairedItemMultipleItemsFound(destinationNodeName, pairedItem.item);
|
||
}
|
||
return first;
|
||
};
|
||
const handleFromAi = (name, _description, _type = 'string', defaultValue) => {
|
||
const { itemIndex, runIndex } = that;
|
||
if (!name || name === '') {
|
||
throw new ExpressionError("Add a key, e.g. $fromAI('placeholder_name')", {
|
||
runIndex,
|
||
itemIndex,
|
||
});
|
||
}
|
||
const nameValidationRegex = /^[a-zA-Z0-9_-]{0,64}$/;
|
||
if (!nameValidationRegex.test(name)) {
|
||
throw new ExpressionError('Invalid parameter key, must be between 1 and 64 characters long and only contain lowercase letters, uppercase letters, numbers, underscores, and hyphens', {
|
||
runIndex,
|
||
itemIndex,
|
||
});
|
||
}
|
||
const resultData = that.runExecutionData?.resultData.runData[that.activeNodeName]?.[runIndex];
|
||
let inputData;
|
||
let placeholdersDataInputData;
|
||
if (!resultData) {
|
||
inputData = this.connectionInputData?.[runIndex];
|
||
placeholdersDataInputData = inputData.json;
|
||
}
|
||
else {
|
||
inputData =
|
||
that.runExecutionData?.resultData.runData[that.activeNodeName]?.[runIndex].inputOverride;
|
||
placeholdersDataInputData = inputData?.[NodeConnectionTypes.AiTool]?.[0]?.[itemIndex].json;
|
||
}
|
||
if (!placeholdersDataInputData) {
|
||
throw new ExpressionError('No execution data available', {
|
||
runIndex,
|
||
itemIndex,
|
||
type: 'no_execution_data',
|
||
});
|
||
}
|
||
return (
|
||
// TS does not know that the key exists, we need to address this in refactor
|
||
placeholdersDataInputData?.query?.[name] ??
|
||
placeholdersDataInputData?.[name] ??
|
||
defaultValue);
|
||
};
|
||
const base = {
|
||
$: (nodeName) => {
|
||
if (!nodeName) {
|
||
throw createExpressionError('When calling $(), please specify a node');
|
||
}
|
||
const referencedNode = that.workflow.getNode(nodeName);
|
||
if (referencedNode === null) {
|
||
throw createExpressionError("Referenced node doesn't exist", {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
nodeCause: nodeName,
|
||
descriptionKey: 'nodeNotFound',
|
||
});
|
||
}
|
||
const ensureNodeExecutionData = () => {
|
||
if (!that?.runExecutionData?.resultData?.runData.hasOwnProperty(nodeName) &&
|
||
!getPinDataIfManualExecution(that.workflow, nodeName, that.mode)) {
|
||
throw createExpressionError(`Node '${nodeName}' hasn't been executed`, {
|
||
messageTemplate: 'An expression references this node, but the node is unexecuted. Consider re-wiring your nodes or checking for execution first, i.e. {{ $if( $("{{nodeName}}").isExecuted, <action_if_executed>, "") }}',
|
||
functionality: 'pairedItem',
|
||
descriptionKey: isScriptingNode(nodeName, that.workflow)
|
||
? 'pairedItemNoConnectionCodeNode'
|
||
: 'pairedItemNoConnection',
|
||
type: 'no_execution_data',
|
||
nodeCause: nodeName,
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
});
|
||
}
|
||
};
|
||
return new Proxy({}, {
|
||
has: () => true,
|
||
ownKeys() {
|
||
return [
|
||
PAIRED_ITEM_METHOD.PAIRED_ITEM,
|
||
'isExecuted',
|
||
PAIRED_ITEM_METHOD.ITEM_MATCHING,
|
||
PAIRED_ITEM_METHOD.ITEM,
|
||
'first',
|
||
'last',
|
||
'all',
|
||
'context',
|
||
'params',
|
||
];
|
||
},
|
||
get(target, property, receiver) {
|
||
if (property === 'isProxy')
|
||
return true;
|
||
if (property === 'isExecuted') {
|
||
return (that?.runExecutionData?.resultData?.runData.hasOwnProperty(nodeName) ?? false);
|
||
}
|
||
if (property === PAIRED_ITEM_METHOD.PAIRED_ITEM ||
|
||
property === PAIRED_ITEM_METHOD.ITEM_MATCHING ||
|
||
property === PAIRED_ITEM_METHOD.ITEM) {
|
||
// Before resolving the pairedItem make sure that the requested node comes in the
|
||
// graph before the current one
|
||
const activeNode = that.workflow.getNode(that.activeNodeName);
|
||
let contextNode = that.contextNodeName;
|
||
if (activeNode) {
|
||
const parentMainInputNode = that.workflow.getParentMainInputNode(activeNode);
|
||
contextNode = parentMainInputNode?.name ?? contextNode;
|
||
}
|
||
const parentNodes = that.workflow.getParentNodes(contextNode);
|
||
if (!parentNodes.includes(nodeName)) {
|
||
throw createNoConnectionError(nodeName);
|
||
}
|
||
ensureNodeExecutionData();
|
||
const pairedItemMethod = (itemIndex) => {
|
||
if (itemIndex === undefined) {
|
||
if (property === PAIRED_ITEM_METHOD.ITEM_MATCHING) {
|
||
throw createExpressionError('Missing item index for .itemMatching()', {
|
||
itemIndex,
|
||
});
|
||
}
|
||
itemIndex = that.itemIndex;
|
||
}
|
||
if (!that.connectionInputData.length) {
|
||
const pinnedData = getPinDataIfManualExecution(that.workflow, nodeName, that.mode);
|
||
if (pinnedData) {
|
||
return pinnedData[itemIndex];
|
||
}
|
||
}
|
||
const executionData = that.connectionInputData;
|
||
const input = executionData?.[itemIndex];
|
||
if (!input) {
|
||
throw createExpressionError('Can’t get data for expression', {
|
||
messageTemplate: 'Can’t get data for expression under ‘%%PARAMETER%%’ field',
|
||
functionality: 'pairedItem',
|
||
functionOverrides: {
|
||
description: `Some intermediate nodes between ‘<strong>${nodeName}</strong>‘ and ‘<strong>${that.activeNodeName}</strong>‘ have not executed yet.`,
|
||
message: 'Can’t get data',
|
||
},
|
||
description: `Some intermediate nodes between ‘<strong>${nodeName}</strong>‘ and ‘<strong>${that.activeNodeName}</strong>‘ have not executed yet.`,
|
||
causeDetailed: `pairedItem can\'t be found when intermediate nodes between ‘<strong>${nodeName}</strong>‘ and ‘<strong>${that.activeNodeName}</strong> have not executed yet.`,
|
||
itemIndex,
|
||
type: 'paired_item_intermediate_nodes',
|
||
});
|
||
}
|
||
// As we operate on the incoming item we can be sure that pairedItem is not an
|
||
// array. After all can it only come from exactly one previous node via a certain
|
||
// input. For that reason do we not have to consider the array case.
|
||
const pairedItem = input.pairedItem;
|
||
if (pairedItem === undefined) {
|
||
throw createMissingPairedItemError(that.activeNodeName, property);
|
||
}
|
||
if (!that.executeData?.source) {
|
||
throw createExpressionError('Can’t get data for expression', {
|
||
messageTemplate: 'Can’t get data for expression under ‘%%PARAMETER%%’ field',
|
||
functionality: 'pairedItem',
|
||
functionOverrides: {
|
||
message: 'Can’t get data',
|
||
},
|
||
description: 'Apologies, this is an internal error. See details for more information',
|
||
causeDetailed: 'Missing sourceData (probably an internal error)',
|
||
itemIndex,
|
||
});
|
||
}
|
||
const sourceData = that.executeData.source.main[pairedItem.input || 0] ??
|
||
that.executeData.source.main[0];
|
||
return getPairedItem(nodeName, sourceData, pairedItem, property);
|
||
};
|
||
if (property === PAIRED_ITEM_METHOD.ITEM) {
|
||
return pairedItemMethod();
|
||
}
|
||
return pairedItemMethod;
|
||
}
|
||
if (property === 'first') {
|
||
ensureNodeExecutionData();
|
||
return (branchIndex, runIndex) => {
|
||
branchIndex =
|
||
branchIndex ??
|
||
// default to the output the active node is connected to
|
||
that.workflow.getNodeConnectionIndexes(that.activeNodeName, nodeName)
|
||
?.sourceIndex ??
|
||
0;
|
||
const executionData = that.getNodeExecutionOrPinnedData({
|
||
nodeName,
|
||
branchIndex,
|
||
runIndex,
|
||
});
|
||
if (executionData[0])
|
||
return executionData[0];
|
||
return undefined;
|
||
};
|
||
}
|
||
if (property === 'last') {
|
||
ensureNodeExecutionData();
|
||
return (branchIndex, runIndex) => {
|
||
branchIndex =
|
||
branchIndex ??
|
||
// default to the output the active node is connected to
|
||
that.workflow.getNodeConnectionIndexes(that.activeNodeName, nodeName)
|
||
?.sourceIndex ??
|
||
0;
|
||
const executionData = that.getNodeExecutionOrPinnedData({
|
||
nodeName,
|
||
branchIndex,
|
||
runIndex,
|
||
});
|
||
if (!executionData.length)
|
||
return undefined;
|
||
if (executionData[executionData.length - 1]) {
|
||
return executionData[executionData.length - 1];
|
||
}
|
||
return undefined;
|
||
};
|
||
}
|
||
if (property === 'all') {
|
||
ensureNodeExecutionData();
|
||
return (branchIndex, runIndex) => {
|
||
branchIndex =
|
||
branchIndex ??
|
||
// default to the output the active node is connected to
|
||
that.workflow.getNodeConnectionIndexes(that.activeNodeName, nodeName)
|
||
?.sourceIndex ??
|
||
0;
|
||
return that.getNodeExecutionOrPinnedData({ nodeName, branchIndex, runIndex });
|
||
};
|
||
}
|
||
if (property === 'context') {
|
||
return that.nodeContextGetter(nodeName);
|
||
}
|
||
if (property === 'params') {
|
||
return that.workflow.getNode(nodeName)?.parameters;
|
||
}
|
||
return Reflect.get(target, property, receiver);
|
||
},
|
||
});
|
||
},
|
||
$input: new Proxy({}, {
|
||
has: () => true,
|
||
ownKeys() {
|
||
return ['all', 'context', 'first', 'item', 'last', 'params'];
|
||
},
|
||
getOwnPropertyDescriptor() {
|
||
return {
|
||
enumerable: true,
|
||
configurable: true,
|
||
};
|
||
},
|
||
get(target, property, receiver) {
|
||
if (property === 'isProxy')
|
||
return true;
|
||
if (that.connectionInputData.length === 0) {
|
||
throw createExpressionError('No execution data available', {
|
||
runIndex: that.runIndex,
|
||
itemIndex: that.itemIndex,
|
||
type: 'no_execution_data',
|
||
});
|
||
}
|
||
if (property === 'item') {
|
||
return that.connectionInputData[that.itemIndex];
|
||
}
|
||
if (property === 'first') {
|
||
return (...args) => {
|
||
if (args.length) {
|
||
throw createExpressionError('$input.first() should have no arguments');
|
||
}
|
||
const result = that.connectionInputData;
|
||
if (result[0]) {
|
||
return result[0];
|
||
}
|
||
return undefined;
|
||
};
|
||
}
|
||
if (property === 'last') {
|
||
return (...args) => {
|
||
if (args.length) {
|
||
throw createExpressionError('$input.last() should have no arguments');
|
||
}
|
||
const result = that.connectionInputData;
|
||
if (result.length && result[result.length - 1]) {
|
||
return result[result.length - 1];
|
||
}
|
||
return undefined;
|
||
};
|
||
}
|
||
if (property === 'all') {
|
||
return () => {
|
||
const result = that.connectionInputData;
|
||
if (result.length) {
|
||
return result;
|
||
}
|
||
return [];
|
||
};
|
||
}
|
||
if (['context', 'params'].includes(property)) {
|
||
// For the following properties we need the source data so fail in case it is missing
|
||
// for some reason (even though that should actually never happen)
|
||
if (!that.executeData?.source) {
|
||
throw createExpressionError('Can’t get data for expression', {
|
||
messageTemplate: 'Can’t get data for expression under ‘%%PARAMETER%%’ field',
|
||
functionOverrides: {
|
||
message: 'Can’t get data',
|
||
},
|
||
description: 'Apologies, this is an internal error. See details for more information',
|
||
causeDetailed: 'Missing sourceData (probably an internal error)',
|
||
runIndex: that.runIndex,
|
||
});
|
||
}
|
||
const sourceData = that.executeData.source.main[0];
|
||
if (property === 'context') {
|
||
return that.nodeContextGetter(sourceData.previousNode);
|
||
}
|
||
if (property === 'params') {
|
||
return that.workflow.getNode(sourceData.previousNode)?.parameters;
|
||
}
|
||
}
|
||
return Reflect.get(target, property, receiver);
|
||
},
|
||
}),
|
||
$binary: {}, // Placeholder
|
||
$data: {}, // Placeholder
|
||
$env: createEnvProvider(that.runIndex, that.itemIndex, that.envProviderState ?? createEnvProviderState()),
|
||
$evaluateExpression: (expression, itemIndex) => {
|
||
itemIndex = itemIndex || that.itemIndex;
|
||
return that.workflow.expression.getParameterValue(`=${expression}`, that.runExecutionData, that.runIndex, itemIndex, that.activeNodeName, that.connectionInputData, that.mode, that.additionalKeys, that.executeData, false, {}, that.contextNodeName);
|
||
},
|
||
$item: (itemIndex, runIndex) => {
|
||
const defaultReturnRunIndex = runIndex === undefined ? -1 : runIndex;
|
||
const dataProxy = new WorkflowDataProxy(this.workflow, this.runExecutionData, this.runIndex, itemIndex, this.activeNodeName, this.connectionInputData, that.siblingParameters, that.mode, that.additionalKeys, that.executeData, defaultReturnRunIndex, {}, that.contextNodeName);
|
||
return dataProxy.getDataProxy();
|
||
},
|
||
$fromAI: handleFromAi,
|
||
// Make sure mis-capitalized $fromAI is handled correctly even though we don't auto-complete it
|
||
$fromai: handleFromAi,
|
||
$fromAi: handleFromAi,
|
||
$items: (nodeName, outputIndex, runIndex) => {
|
||
if (nodeName === undefined) {
|
||
nodeName = that.prevNodeGetter().name;
|
||
const node = this.workflow.nodes[nodeName];
|
||
let result = that.connectionInputData;
|
||
if (node.executeOnce === true) {
|
||
result = result.slice(0, 1);
|
||
}
|
||
if (result.length) {
|
||
return result;
|
||
}
|
||
return [];
|
||
}
|
||
outputIndex = outputIndex || 0;
|
||
runIndex = runIndex === undefined ? -1 : runIndex;
|
||
return that.getNodeExecutionData(nodeName, false, outputIndex, runIndex);
|
||
},
|
||
$json: {}, // Placeholder
|
||
$node: this.nodeGetter(),
|
||
$self: this.selfGetter(),
|
||
$parameter: this.nodeParameterGetter(this.activeNodeName),
|
||
$rawParameter: this.nodeParameterGetter(this.activeNodeName, false),
|
||
$prevNode: this.prevNodeGetter(),
|
||
$runIndex: this.runIndex,
|
||
$mode: this.mode,
|
||
$workflow: this.workflowGetter(),
|
||
$itemIndex: this.itemIndex,
|
||
$now: DateTime.now(),
|
||
$today: DateTime.now().set({ hour: 0, minute: 0, second: 0, millisecond: 0 }),
|
||
$jmesPath: jmespathWrapper,
|
||
DateTime,
|
||
Interval,
|
||
Duration,
|
||
...that.additionalKeys,
|
||
$getPairedItem: getPairedItem,
|
||
// deprecated
|
||
$jmespath: jmespathWrapper,
|
||
$position: this.itemIndex,
|
||
$thisItem: that.connectionInputData[that.itemIndex],
|
||
$thisItemIndex: this.itemIndex,
|
||
$thisRunIndex: this.runIndex,
|
||
$nodeVersion: that.workflow.getNode(that.activeNodeName)?.typeVersion,
|
||
$nodeId: that.workflow.getNode(that.activeNodeName)?.id,
|
||
$agentInfo: this.agentInfo(),
|
||
$webhookId: that.workflow.getNode(that.activeNodeName)?.webhookId,
|
||
};
|
||
const throwOnMissingExecutionData = opts?.throwOnMissingExecutionData ?? true;
|
||
return new Proxy(base, {
|
||
has: () => true,
|
||
get(target, name, receiver) {
|
||
if (name === 'isProxy')
|
||
return true;
|
||
if (['$data', '$json'].includes(name)) {
|
||
return that.nodeDataGetter(that.contextNodeName, true, throwOnMissingExecutionData)?.json;
|
||
}
|
||
if (name === '$binary') {
|
||
return that.nodeDataGetter(that.contextNodeName, true, throwOnMissingExecutionData)
|
||
?.binary;
|
||
}
|
||
return Reflect.get(target, name, receiver);
|
||
},
|
||
});
|
||
}
|
||
}
|
||
//# sourceMappingURL=workflow-data-proxy.js.map
|