/
workflowHelpers.ts
740 lines (625 loc) · 23.4 KB
/
workflowHelpers.ts
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import {
ERROR_TRIGGER_NODE_TYPE,
PLACEHOLDER_FILLED_AT_EXECUTION_TIME,
PLACEHOLDER_EMPTY_WORKFLOW_ID,
START_NODE_TYPE,
WEBHOOK_NODE_TYPE,
VIEWS,
} from '@/constants';
import {
IConnections,
IDataObject,
INode,
INodeExecutionData,
INodeIssues,
INodeParameters,
NodeParameterValue,
INodeCredentials,
INodeType,
INodeTypes,
INodeTypeData,
INodeTypeDescription,
INodeVersionedType,
IRunData,
IRunExecutionData,
IWorfklowIssues,
IWorkflowDataProxyAdditionalKeys,
Workflow,
NodeHelpers,
IExecuteData,
INodeConnection,
IWebhookDescription,
} from 'n8n-workflow';
import {
IExecutionResponse,
INodeTypesMaxCount,
INodeUi,
IWorkflowData,
IWorkflowDb,
IWorkflowDataUpdate,
XYPosition,
ITag,
IUpdateInformation,
} from '../../Interface';
import { externalHooks } from '@/components/mixins/externalHooks';
import { restApi } from '@/components/mixins/restApi';
import { nodeHelpers } from '@/components/mixins/nodeHelpers';
import { showMessage } from '@/components/mixins/showMessage';
import { isEqual } from 'lodash';
import mixins from 'vue-typed-mixins';
import { v4 as uuidv4 } from 'uuid';
export const workflowHelpers = mixins(
externalHooks,
nodeHelpers,
restApi,
showMessage,
)
.extend({
methods: {
executeData(parentNode: string[], currentNode: string, inputName: string, runIndex: number): IExecuteData {
const executeData = {
node: {},
data: {},
source: null,
} as IExecuteData;
if (parentNode.length) {
// Add the input data to be able to also resolve the short expression format
// which does not use the node name
const parentNodeName = parentNode[0];
const workflowRunData = this.$store.getters.getWorkflowRunData as IRunData | null;
if (workflowRunData === null) {
return executeData;
}
if (!workflowRunData[parentNodeName] ||
workflowRunData[parentNodeName].length <= runIndex ||
!workflowRunData[parentNodeName][runIndex].hasOwnProperty('data') ||
workflowRunData[parentNodeName][runIndex].data === undefined ||
!workflowRunData[parentNodeName][runIndex].data!.hasOwnProperty(inputName)
) {
executeData.data = {};
} else {
executeData.data = workflowRunData[parentNodeName][runIndex].data!;
if (workflowRunData[currentNode] && workflowRunData[currentNode][runIndex]) {
executeData.source = {
[inputName]: workflowRunData[currentNode][runIndex].source!,
};
} else {
// The curent node did not get executed in UI yet so build data manually
executeData.source = {
[inputName]: [
{
previousNode: parentNodeName,
},
],
};
}
}
}
return executeData;
},
// Returns connectionInputData to be able to execute an expression.
connectionInputData (parentNode: string[], currentNode: string, inputName: string, runIndex: number, nodeConnection: INodeConnection = { sourceIndex: 0, destinationIndex: 0 }): INodeExecutionData[] | null {
let connectionInputData = null;
const executeData = this.executeData(parentNode, currentNode, inputName, runIndex);
if (parentNode.length) {
if (!Object.keys(executeData.data).length || executeData.data[inputName].length <= nodeConnection.sourceIndex) {
connectionInputData = [];
} else {
connectionInputData = executeData.data![inputName][nodeConnection.sourceIndex];
if (connectionInputData !== null) {
// Update the pairedItem information on items
connectionInputData = connectionInputData.map((item, itemIndex) => {
return {
...item,
pairedItem: {
item: itemIndex,
input: nodeConnection.destinationIndex,
},
};
});
}
}
}
return connectionInputData;
},
// Returns a shallow copy of the nodes which means that all the data on the lower
// levels still only gets referenced but the top level object is a different one.
// This has the advantage that it is very fast and does not cause problems with vuex
// when the workflow replaces the node-parameters.
getNodes (): INodeUi[] {
const nodes = this.$store.getters.allNodes;
const returnNodes: INodeUi[] = [];
for (const node of nodes) {
returnNodes.push(Object.assign({}, node));
}
return returnNodes;
},
// Returns data about nodeTypes which ahve a "maxNodes" limit set.
// For each such type does it return how high the limit is, how many
// already exist and the name of this nodes.
getNodeTypesMaxCount (): INodeTypesMaxCount {
const nodes = this.$store.getters.allNodes;
const returnData: INodeTypesMaxCount = {};
const nodeTypes = this.$store.getters.allNodeTypes;
for (const nodeType of nodeTypes) {
if (nodeType.maxNodes !== undefined) {
returnData[nodeType.name] = {
exist: 0,
max: nodeType.maxNodes,
nodeNames: [],
};
}
}
for (const node of nodes) {
if (returnData[node.type] !== undefined) {
returnData[node.type].exist += 1;
returnData[node.type].nodeNames.push(node.name);
}
}
return returnData;
},
// Returns how many nodes of the given type currently exist
getNodeTypeCount (nodeType: string): number {
const nodes = this.$store.getters.allNodes;
let count = 0;
for (const node of nodes) {
if (node.type === nodeType) {
count++;
}
}
return count;
},
// Checks if everything in the workflow is complete and ready to be executed
checkReadyForExecution (workflow: Workflow, lastNodeName?: string) {
let node: INode;
let nodeType: INodeType | undefined;
let nodeIssues: INodeIssues | null = null;
const workflowIssues: IWorfklowIssues = {};
let checkNodes = Object.keys(workflow.nodes);
if (lastNodeName) {
checkNodes = workflow.getParentNodes(lastNodeName);
checkNodes.push(lastNodeName);
} else {
// As webhook nodes always take presidence check first
// if there are any
let checkWebhook: string[] = [];
for (const nodeName of Object.keys(workflow.nodes)) {
if (workflow.nodes[nodeName].disabled !== true && workflow.nodes[nodeName].type === WEBHOOK_NODE_TYPE) {
checkWebhook = [nodeName, ...checkWebhook, ...workflow.getChildNodes(nodeName)];
}
}
if (checkWebhook.length) {
checkNodes = checkWebhook;
} else {
// If no webhook nodes got found try to find another trigger node
const startNode = workflow.getStartNode();
if (startNode !== undefined) {
checkNodes = workflow.getChildNodes(startNode.name);
checkNodes.push(startNode.name);
}
}
}
for (const nodeName of checkNodes) {
nodeIssues = null;
node = workflow.nodes[nodeName];
if (node.disabled === true) {
// Ignore issues on disabled nodes
continue;
}
nodeType = workflow.nodeTypes.getByNameAndVersion(node.type, node.typeVersion);
if (nodeType === undefined) {
// Node type is not known
nodeIssues = {
typeUnknown: true,
};
} else {
nodeIssues = this.getNodeIssues(nodeType.description, node, ['execution']);
}
if (nodeIssues !== null) {
workflowIssues[node.name] = nodeIssues;
}
}
if (Object.keys(workflowIssues).length === 0) {
return null;
}
return workflowIssues;
},
getNodeTypes (): INodeTypes {
const nodeTypes: INodeTypes = {
nodeTypes: {},
init: async (nodeTypes?: INodeTypeData): Promise<void> => { },
getAll: (): Array<INodeType | INodeVersionedType> => {
// Does not get used in Workflow so no need to return it
return [];
},
getByNameAndVersion: (nodeType: string, version?: number): INodeType | undefined => {
const nodeTypeDescription = this.$store.getters.nodeType(nodeType, version) as INodeTypeDescription | null;
if (nodeTypeDescription === null) {
return undefined;
}
return {
description: nodeTypeDescription,
// As we do not have the trigger/poll functions available in the frontend
// we use the information available to figure out what are trigger nodes
// @ts-ignore
trigger: ![ERROR_TRIGGER_NODE_TYPE, START_NODE_TYPE].includes(nodeType) && nodeTypeDescription.inputs.length === 0 && !nodeTypeDescription.webhooks || undefined,
};
},
};
return nodeTypes;
},
// Returns a workflow instance.
getWorkflow (nodes?: INodeUi[], connections?: IConnections, copyData?: boolean): Workflow {
nodes = nodes || this.getNodes();
connections = connections || (this.$store.getters.allConnections as IConnections);
const nodeTypes = this.getNodeTypes();
let workflowId = this.$store.getters.workflowId;
if (workflowId === PLACEHOLDER_EMPTY_WORKFLOW_ID) {
workflowId = undefined;
}
const workflowName = this.$store.getters.workflowName;
if (copyData === true) {
return new Workflow({ id: workflowId, name: workflowName, nodes: JSON.parse(JSON.stringify(nodes)), connections: JSON.parse(JSON.stringify(connections)), active: false, nodeTypes, settings: this.$store.getters.workflowSettings});
} else {
return new Workflow({ id: workflowId, name: workflowName, nodes, connections, active: false, nodeTypes, settings: this.$store.getters.workflowSettings});
}
},
// Returns the currently loaded workflow as JSON.
getWorkflowDataToSave (): Promise<IWorkflowData> {
const workflowNodes = this.$store.getters.allNodes;
const workflowConnections = this.$store.getters.allConnections;
let nodeData;
const nodes = [];
for (let nodeIndex = 0; nodeIndex < workflowNodes.length; nodeIndex++) {
try {
// @ts-ignore
nodeData = this.getNodeDataToSave(workflowNodes[nodeIndex]);
} catch (e) {
return Promise.reject(e);
}
nodes.push(nodeData);
}
const data: IWorkflowData = {
name: this.$store.getters.workflowName,
nodes,
connections: workflowConnections,
active: this.$store.getters.isActive,
settings: this.$store.getters.workflowSettings,
tags: this.$store.getters.workflowTags,
};
const workflowId = this.$store.getters.workflowId;
if (workflowId !== PLACEHOLDER_EMPTY_WORKFLOW_ID) {
data.id = workflowId;
}
return Promise.resolve(data);
},
// Returns all node-types
getNodeDataToSave (node: INodeUi): INodeUi {
const skipKeys = [
'color',
'continueOnFail',
'credentials',
'disabled',
'issues',
'notes',
'parameters',
'status',
];
// @ts-ignore
const nodeData: INodeUi = {
parameters: {},
};
for (const key in node) {
if (key.charAt(0) !== '_' && skipKeys.indexOf(key) === -1) {
// @ts-ignore
nodeData[key] = node[key];
}
}
// Get the data of the node type that we can get the default values
// TODO: Later also has to care about the node-type-version as defaults could be different
const nodeType = this.$store.getters.nodeType(node.type, node.typeVersion) as INodeTypeDescription | null;
if (nodeType !== null) {
// Node-Type is known so we can save the parameters correctly
const nodeParameters = NodeHelpers.getNodeParameters(nodeType.properties, node.parameters, false, false, node);
nodeData.parameters = nodeParameters !== null ? nodeParameters : {};
// Add the node credentials if there are some set and if they should be displayed
if (node.credentials !== undefined && nodeType.credentials !== undefined) {
const saveCredenetials: INodeCredentials = {};
for (const nodeCredentialTypeName of Object.keys(node.credentials)) {
if (this.hasProxyAuth(node) || Object.keys(node.parameters).includes('genericAuthType')) {
saveCredenetials[nodeCredentialTypeName] = node.credentials[nodeCredentialTypeName];
continue;
}
const credentialTypeDescription = nodeType.credentials
// filter out credentials with same name in different node versions
.filter((c) => this.displayParameter(node.parameters, c, '', node))
.find((c) => c.name === nodeCredentialTypeName);
if (credentialTypeDescription === undefined) {
// Credential type is not know so do not save
continue;
}
if (this.displayParameter(node.parameters, credentialTypeDescription, '', node) === false) {
// Credential should not be displayed so do also not save
continue;
}
saveCredenetials[nodeCredentialTypeName] = node.credentials[nodeCredentialTypeName];
}
// Set credential property only if it has content
if (Object.keys(saveCredenetials).length !== 0) {
nodeData.credentials = saveCredenetials;
}
}
} else {
// Node-Type is not known so save the data as it is
nodeData.credentials = node.credentials;
nodeData.parameters = node.parameters;
if (nodeData.color !== undefined) {
nodeData.color = node.color;
}
}
// Save the disabled property and continueOnFail only when is set
if (node.disabled === true) {
nodeData.disabled = true;
}
if (node.continueOnFail === true) {
nodeData.continueOnFail = true;
}
// Save the notes only if when they contain data
if (![undefined, ''].includes(node.notes)) {
nodeData.notes = node.notes;
}
return nodeData;
},
getWebhookExpressionValue (webhookData: IWebhookDescription, key: string): string {
if (webhookData[key] === undefined) {
return 'empty';
}
try {
return this.resolveExpression(webhookData[key] as string) as string;
} catch (e) {
return this.$locale.baseText('nodeWebhooks.invalidExpression');
}
},
getWebhookUrl (webhookData: IWebhookDescription, node: INode, showUrlFor?: string): string {
if (webhookData.restartWebhook === true) {
return '$resumeWebhookUrl';
}
let baseUrl = this.$store.getters.getWebhookUrl;
if (showUrlFor === 'test') {
baseUrl = this.$store.getters.getWebhookTestUrl;
}
const workflowId = this.$store.getters.workflowId;
const path = this.getWebhookExpressionValue(webhookData, 'path');
const isFullPath = this.getWebhookExpressionValue(webhookData, 'isFullPath') as unknown as boolean || false;
return NodeHelpers.getNodeWebhookUrl(baseUrl, workflowId, node, path, isFullPath);
},
resolveParameter(parameter: NodeParameterValue | INodeParameters | NodeParameterValue[] | INodeParameters[]) {
const itemIndex = 0;
const inputName = 'main';
const activeNode = this.$store.getters.activeNode;
const workflow = this.getWorkflow();
const parentNode = workflow.getParentNodes(activeNode.name, inputName, 1);
const executionData = this.$store.getters.getWorkflowExecution as IExecutionResponse | null;
const workflowRunData = this.$store.getters.getWorkflowRunData as IRunData | null;
let runIndexParent = 0;
if (workflowRunData !== null && parentNode.length) {
runIndexParent = workflowRunData[parentNode[0]].length -1;
}
const nodeConnection = workflow.getNodeConnectionIndexes(activeNode!.name, parentNode[0]);
let connectionInputData = this.connectionInputData(parentNode, activeNode.name, inputName, runIndexParent, nodeConnection);
let runExecutionData: IRunExecutionData;
if (executionData === null) {
runExecutionData = {
resultData: {
runData: {},
},
};
} else {
runExecutionData = executionData.data;
}
if (connectionInputData === null) {
connectionInputData = [];
}
const additionalKeys: IWorkflowDataProxyAdditionalKeys = {
$executionId: PLACEHOLDER_FILLED_AT_EXECUTION_TIME,
$resumeWebhookUrl: PLACEHOLDER_FILLED_AT_EXECUTION_TIME,
};
let runIndexCurrent = 0;
if (workflowRunData !== null && workflowRunData[activeNode.name]) {
runIndexCurrent = workflowRunData[activeNode.name].length -1;
}
const executeData = this.executeData(parentNode, activeNode.name, inputName, runIndexCurrent);
return workflow.expression.getParameterValue(parameter, runExecutionData, runIndexCurrent, itemIndex, activeNode.name, connectionInputData, 'manual', this.$store.getters.timezone, additionalKeys, executeData, false) as IDataObject;
},
resolveExpression(expression: string, siblingParameters: INodeParameters = {}) {
const parameters = {
'__xxxxxxx__': expression,
...siblingParameters,
};
const returnData = this.resolveParameter(parameters) as IDataObject;
if (typeof returnData['__xxxxxxx__'] === 'object') {
const workflow = this.getWorkflow();
return workflow.expression.convertObjectValueToString(returnData['__xxxxxxx__'] as object);
}
return returnData['__xxxxxxx__'];
},
async updateWorkflow({workflowId, active}: {workflowId: string, active?: boolean}) {
let data: IWorkflowDataUpdate = {};
const isCurrentWorkflow = workflowId === this.$store.getters.workflowId;
if (isCurrentWorkflow) {
data = await this.getWorkflowDataToSave();
}
if (active !== undefined) {
data.active = active;
}
const workflow = await this.restApi().updateWorkflow(workflowId, data);
if (isCurrentWorkflow) {
this.$store.commit('setActive', !!workflow.active);
this.$store.commit('setStateDirty', false);
}
if (workflow.active) {
this.$store.commit('setWorkflowActive', workflowId);
} else {
this.$store.commit('setWorkflowInactive', workflowId);
}
},
async saveCurrentWorkflow({name, tags}: {name?: string, tags?: string[]} = {}, redirect = true): Promise<boolean> {
const currentWorkflow = this.$route.params.name;
if (!currentWorkflow) {
return this.saveAsNewWorkflow({name, tags}, redirect);
}
// Workflow exists already so update it
try {
this.$store.commit('addActiveAction', 'workflowSaving');
const workflowDataRequest: IWorkflowDataUpdate = await this.getWorkflowDataToSave();
if (name) {
workflowDataRequest.name = name.trim();
}
if (tags) {
workflowDataRequest.tags = tags;
}
const workflowData = await this.restApi().updateWorkflow(currentWorkflow, workflowDataRequest);
if (name) {
this.$store.commit('setWorkflowName', {newName: workflowData.name});
}
if (tags) {
const createdTags = (workflowData.tags || []) as ITag[];
const tagIds = createdTags.map((tag: ITag): string => tag.id);
this.$store.commit('setWorkflowTagIds', tagIds);
}
this.$store.commit('setStateDirty', false);
this.$store.commit('removeActiveAction', 'workflowSaving');
this.$externalHooks().run('workflow.afterUpdate', { workflowData });
return true;
} catch (error) {
this.$store.commit('removeActiveAction', 'workflowSaving');
this.$showMessage({
title: this.$locale.baseText('workflowHelpers.showMessage.title'),
message: error.message,
type: 'error',
});
return false;
}
},
async saveAsNewWorkflow ({name, tags, resetWebhookUrls, openInNewWindow}: {name?: string, tags?: string[], resetWebhookUrls?: boolean, openInNewWindow?: boolean} = {}, redirect = true): Promise<boolean> {
try {
this.$store.commit('addActiveAction', 'workflowSaving');
const workflowDataRequest: IWorkflowDataUpdate = await this.getWorkflowDataToSave();
// make sure that the new ones are not active
workflowDataRequest.active = false;
const changedNodes = {} as IDataObject;
if (resetWebhookUrls) {
workflowDataRequest.nodes = workflowDataRequest.nodes!.map(node => {
if (node.webhookId) {
node.webhookId = uuidv4();
changedNodes[node.name] = node.webhookId;
}
return node;
});
}
if (name) {
workflowDataRequest.name = name.trim();
}
if (tags) {
workflowDataRequest.tags = tags;
}
const workflowData = await this.restApi().createNewWorkflow(workflowDataRequest);
if (openInNewWindow) {
const routeData = this.$router.resolve({name: VIEWS.WORKFLOW, params: {name: workflowData.id}});
window.open(routeData.href, '_blank');
this.$store.commit('removeActiveAction', 'workflowSaving');
return true;
}
this.$store.commit('setActive', workflowData.active || false);
this.$store.commit('setWorkflowId', workflowData.id);
this.$store.commit('setWorkflowName', {newName: workflowData.name, setStateDirty: false});
this.$store.commit('setWorkflowSettings', workflowData.settings || {});
this.$store.commit('setStateDirty', false);
Object.keys(changedNodes).forEach((nodeName) => {
const changes = {
key: 'webhookId',
value: changedNodes[nodeName],
name: nodeName,
} as IUpdateInformation;
this.$store.commit('setNodeValue', changes);
});
const createdTags = (workflowData.tags || []) as ITag[];
const tagIds = createdTags.map((tag: ITag): string => tag.id);
this.$store.commit('setWorkflowTagIds', tagIds);
const templateId = this.$route.query.templateId;
if (templateId) {
this.$telemetry.track('User saved new workflow from template', {
template_id: templateId,
workflow_id: workflowData.id,
wf_template_repo_session_id: this.$store.getters['templates/previousSessionId'],
});
}
if (redirect) {
this.$router.push({
name: VIEWS.WORKFLOW,
params: { name: workflowData.id as string, action: 'workflowSave' },
});
}
this.$store.commit('removeActiveAction', 'workflowSaving');
this.$store.commit('setStateDirty', false);
this.$externalHooks().run('workflow.afterUpdate', { workflowData });
return true;
} catch (e) {
this.$store.commit('removeActiveAction', 'workflowSaving');
this.$showMessage({
title: this.$locale.baseText('workflowHelpers.showMessage.title'),
message: (e as Error).message,
type: 'error',
});
return false;
}
},
// Updates the position of all the nodes that the top-left node
// is at the given position
updateNodePositions (workflowData: IWorkflowData | IWorkflowDataUpdate, position: XYPosition): void {
if (workflowData.nodes === undefined) {
return;
}
// Find most top-left node
const minPosition = [99999999, 99999999];
for (const node of workflowData.nodes) {
if (node.position[1] < minPosition[1]) {
minPosition[0] = node.position[0];
minPosition[1] = node.position[1];
} else if (node.position[1] === minPosition[1]) {
if (node.position[0] < minPosition[0]) {
minPosition[0] = node.position[0];
minPosition[1] = node.position[1];
}
}
}
// Update the position on all nodes so that the
// most top-left one is at given position
const offsetPosition = [position[0] - minPosition[0], position[1] - minPosition[1]];
for (const node of workflowData.nodes) {
node.position[0] += offsetPosition[0];
node.position[1] += offsetPosition[1];
}
},
async dataHasChanged(id: string) {
const currentData = await this.getWorkflowDataToSave();
const data: IWorkflowDb = await this.restApi().getWorkflow(id);
if(data !== undefined) {
const x = {
nodes: data.nodes,
connections: data.connections,
settings: data.settings,
name: data.name,
};
const y = {
nodes: currentData.nodes,
connections: currentData.connections,
settings: currentData.settings,
name: currentData.name,
};
return !isEqual(x, y);
}
return true;
},
},
});