⚡ Add additional external workflow hooks

packages/cli/src/ExternalHooks.ts

@@ -1,23 +1,28 @@
 import {
 	Db,
-	IExternalHookFunctions,
-	IExternalHooks,
+	IExternalHooksFunctions,
+	IExternalHooksClass,
 } from './';
 
 import * as config from '../config';
 
 // export EXTERNAL_HOOK_FILES=/data/packages/cli/dist/src/externalHooksTemp/test-hooks.js
 
-class ExternalHooksClass implements IExternalHooks {
+class ExternalHooksClass implements IExternalHooksClass {
 
 	externalHooks: {
 		[key: string]: Array<() => {}>
 	} = {};
+	initDidRun = false;
 
 
 	async init(): Promise<void> {
 		console.log('ExternalHooks.init');
 
+		if (this.initDidRun === true) {
+			return;
+		}
+
 		const externalHookFiles = config.get('externalHookFiles').split(':');
 
 		console.log('externalHookFiles');
@@ -48,13 +53,15 @@ class ExternalHooksClass implements IExternalHooks {
 				}
 			}
 		}
+
+		this.initDidRun = true;
 	}
 
 	async run(hookName: string, hookParameters?: any[]): Promise<void> { // tslint:disable-line:no-any
 		console.log('RUN NOW: ' + hookName);
 
-		const externalHookFunctions: IExternalHookFunctions = {
-			DbCollections: Db.collections,
+		const externalHookFunctions: IExternalHooksFunctions = {
+			dbCollections: Db.collections,
 		};
 
 		if (this.externalHooks[hookName] === undefined) {

packages/cli/src/Interfaces.ts

@@ -188,11 +188,26 @@ export interface IExecutingWorkflowData {
 	workflowExecution?: PCancelable<IRun>;
 }
 
-export interface IExternalHookFunctions {
-	DbCollections: IDatabaseCollections;
+export interface IExternalHooks {
+	credentials?: {
+		create?: Array<{ (this: IExternalHooksFunctions, credentialsData: ICredentialsEncrypted): Promise<void>; }>
+		delete?: Array<{ (this: IExternalHooksFunctions, credentialId: string): Promise<void>; }>
+		update?: Array<{ (this: IExternalHooksFunctions, credentialsData: ICredentialsDb): Promise<void>; }>
+	};
+	workflow?: {
+		activate?: Array<{ (this: IExternalHooksFunctions, workflowData: IWorkflowDb): Promise<void>; }>
+		create?: Array<{ (this: IExternalHooksFunctions, workflowData: IWorkflowBase): Promise<void>; }>
+		delete?: Array<{ (this: IExternalHooksFunctions, workflowId: string): Promise<void>; }>
+		execute?: Array<{ (this: IExternalHooksFunctions, workflowData: IWorkflowDb, mode: WorkflowExecuteMode): Promise<void>; }>
+		update?: Array<{ (this: IExternalHooksFunctions, workflowData: IWorkflowDb): Promise<void>; }>
+	};
 }
 
-export interface IExternalHooks {
+export interface IExternalHooksFunctions {
+	dbCollections: IDatabaseCollections;
+}
+
+export interface IExternalHooksClass {
 	init(): Promise<void>;
 	run(hookName: string, hookParameters?: any[]): Promise<void>; // tslint:disable-line:no-any
 }

packages/cli/src/Server.ts

@@ -48,7 +48,6 @@ import {
 	WorkflowCredentials,
 	WebhookHelpers,
 	WorkflowExecuteAdditionalData,
-	WorkflowHelpers,
 	WorkflowRunner,
 	GenericHelpers,
 } from './';
@@ -477,6 +476,8 @@ class App {
 			if (responseData.active === true) {
 				// When the workflow is supposed to be active add it again
 				try {
+					await this.externalHooks.run('workflow.activate', [responseData]);
+
 					await this.activeWorkflowRunner.add(id);
 				} catch (error) {
 					// If workflow could not be activated set it again to inactive
@@ -680,8 +681,6 @@ class App {
 				nodeAccess.date = this.getCurrentDate();
 			}
 
-			await this.externalHooks.run('credentials.create');
-
 			const encryptionKey = await UserSettings.getEncryptionKey();
 			if (encryptionKey === undefined) {
 				throw new Error('No encryption key got found to encrypt the credentials!');
@@ -709,6 +708,8 @@ class App {
 			credentials.setData(incomingData.data, encryptionKey);
 			const newCredentialsData = credentials.getDataToSave() as ICredentialsDb;
 
+			await this.externalHooks.run('credentials.create', [newCredentialsData]);
+
 			// Add special database related data
 			newCredentialsData.createdAt = this.getCurrentDate();
 			newCredentialsData.updatedAt = this.getCurrentDate();
@@ -730,8 +731,6 @@ class App {
 
 			const id = req.params.id;
 
-			await this.externalHooks.run('credentials.update', [id]);
-
 			if (incomingData.name === '') {
 				throw new Error('Credentials have to have a name set!');
 			}
@@ -770,6 +769,8 @@ class App {
 			// Add special database related data
 			newCredentialsData.updatedAt = this.getCurrentDate();
 
+			await this.externalHooks.run('credentials.update', [newCredentialsData]);
+
 			// Update the credentials in DB
 			await Db.collections.Credentials!.update(id, newCredentialsData);
 

packages/cli/src/WorkflowExecuteAdditionalData.ts

@@ -1,5 +1,6 @@
 import {
 	Db,
+	ExternalHooks,
 	IExecutionDb,
 	IExecutionFlattedDb,
 	IPushDataExecutionFinished,
@@ -302,6 +303,10 @@ export async function executeWorkflow(workflowInfo: IExecuteWorkflowInfo, additi
 		workflowData = workflowInfo.code;
 	}
 
+	const externalHooks = ExternalHooks();
+	await externalHooks.init();
+	await externalHooks.run('workflow.execute', [workflowData, mode]);
+
 	const nodeTypes = NodeTypes();
 
 	const workflowName = workflowData ? workflowData.name : undefined;

packages/cli/src/WorkflowRunner.ts

@@ -1,5 +1,6 @@
 import {
 	ActiveExecutions,
+	ExternalHooks,
 	IProcessMessageDataHook,
 	ITransferNodeTypes,
 	IWorkflowExecutionDataProcess,
@@ -94,6 +95,9 @@ export class WorkflowRunner {
 	 * @memberof WorkflowRunner
 	 */
 	async run(data: IWorkflowExecutionDataProcess, loadStaticData?: boolean): Promise<string> {
+		const externalHooks = ExternalHooks();
+		await externalHooks.run('workflow.execute', [data.workflowData, data.executionMode]);
+
 		const executionsProcess = config.get('executions.process') as string;
 		if (executionsProcess === 'main') {
 			return this.runMainProcess(data, loadStaticData);

packages/cli/src/externalHooksTemp/test-hooks.ts

@@ -1,45 +1,44 @@
 import {
-	IExternalHookFunctions,
+	WorkflowExecuteMode,
+} from 'n8n-workflow';
+
+import {
+	IExternalHooks,
+	IExternalHooksFunctions,
 	IWorkflowBase,
+	IWorkflowDb,
 } from '../';
 
-// TODO: Move that to interfaces
-interface IExternalHooks {
-	credentials?: {
-		create?: Array<{ (this: IExternalHookFunctions): Promise<void>; }>
-		delete?: Array<{ (this: IExternalHookFunctions, credentialId: string): Promise<void>; }>
-		update?: Array<{ (this: IExternalHookFunctions, credentialId: string): Promise<void>; }>
-	};
-	workflow?: {
-		create?: Array<{ (this: IExternalHookFunctions, workflowData: IWorkflowBase): Promise<void>; }>
-		delete?: Array<{ (this: IExternalHookFunctions, workflowId: string): Promise<void>; }>
-		update?: Array<{ (this: IExternalHookFunctions, workflowData: IWorkflowBase): Promise<void>; }>
-	};
-}
 
 export = {
 	credentials: {
 		create: [
-			async function (this: IExternalHookFunctions) {
-				// console.log(this.DbCollections.Workflow);
-
+			async function (this: IExternalHooksFunctions) {
 				// Here any additional code can run or the creation blocked
-				throw new Error('No additional credentials can be created.');
+				// throw new Error('No additional credentials can be created.');
 			},
 		],
 	},
 	workflow: {
+		execute: [
+			async function (this: IExternalHooksFunctions, workflowData: IWorkflowDb, mode: WorkflowExecuteMode) {
+				console.log('execute: ' + mode);
+				// if (mode === 'integrated') {
+				// 	throw new Error('Workflow can not be executed.');
+				// }
+			}
+		],
 		update: [
-			async function (this: IExternalHookFunctions, workflowData: IWorkflowBase) {
+			async function (this: IExternalHooksFunctions, workflowData: IWorkflowBase) {
 				console.log('update workflow hook');
 
-				// const responseData = await this.DbCollections.Workflow!.findOne(workflowData.id);
+				// const responseData = await this.dbCollections.Workflow!.findOne(workflowData.id);
 				// console.log('workflowData');
 				// console.log(responseData);
 				// console.log(workflowData);
 
 				// Here any additional code can run or the creation blocked
-				throw new Error('Workflow can not be updated.');
+				// throw new Error('Workflow can not be updated.');
 			},
 		],
 	},