Initial commit to release

packages/core/src/ActiveWorkflows.ts

@@ -0,0 +1,112 @@
+import {
+	ITriggerResponse,
+	IWorkflowExecuteAdditionalData,
+	Workflow,
+} from 'n8n-workflow';
+
+import {
+	NodeExecuteFunctions,
+} from './';
+
+
+export interface WorkflowData {
+	workflow: Workflow;
+	triggerResponse?: ITriggerResponse;
+}
+
+export class ActiveWorkflows {
+	private workflowData: {
+		[key: string]: WorkflowData;
+	} = {};
+
+
+	/**
+	 * Returns if the workflow is active
+	 *
+	 * @param {string} id The id of the workflow to check
+	 * @returns {boolean}
+	 * @memberof ActiveWorkflows
+	 */
+	isActive(id: string): boolean {
+		return this.workflowData.hasOwnProperty(id);
+	}
+
+
+	/**
+	 * Returns the ids of the currently active workflows
+	 *
+	 * @returns {string[]}
+	 * @memberof ActiveWorkflows
+	 */
+	allActiveWorkflows(): string[] {
+		return Object.keys(this.workflowData);
+	}
+
+
+	/**
+	 * Returns the Workflow data for the workflow with
+	 * the given id if it is currently active
+	 *
+	 * @param {string} id
+	 * @returns {(WorkflowData | undefined)}
+	 * @memberof ActiveWorkflows
+	 */
+	get(id: string): WorkflowData | undefined {
+		return this.workflowData[id];
+	}
+
+
+	/**
+	 * Makes a workflow active
+	 *
+	 * @param {string} id The id of the workflow to activate
+	 * @param {Workflow} workflow The workflow to activate
+	 * @param {IWorkflowExecuteAdditionalData} additionalData The additional data which is needed to run workflows
+	 * @returns {Promise<void>}
+	 * @memberof ActiveWorkflows
+	 */
+	async add(id: string, workflow: Workflow, additionalData: IWorkflowExecuteAdditionalData): Promise<void> {
+		console.log('ADD ID (active): ' + id);
+
+		this.workflowData[id] = {
+			workflow
+		};
+		const triggerNodes = workflow.getTriggerNodes();
+
+		let triggerResponse: ITriggerResponse | undefined;
+		for (const triggerNode of triggerNodes) {
+			triggerResponse = await workflow.runTrigger(triggerNode, NodeExecuteFunctions, additionalData, 'trigger');
+			if (triggerResponse !== undefined) {
+				// If a response was given save it
+				this.workflowData[id].triggerResponse = triggerResponse;
+			}
+		}
+	}
+
+
+
+	/**
+	 * Makes a workflow inactive
+	 *
+	 * @param {string} id The id of the workflow to deactivate
+	 * @returns {Promise<void>}
+	 * @memberof ActiveWorkflows
+	 */
+	async remove(id: string): Promise<void> {
+		console.log('REMOVE ID (active): ' + id);
+
+		if (!this.isActive(id)) {
+			// Workflow is currently not registered
+			throw new Error(`The workflow with the id "${id}" is currently not active and can so not be removed`);
+		}
+
+		const workflowData = this.workflowData[id];
+
+		if (workflowData.triggerResponse && workflowData.triggerResponse.closeFunction) {
+			await workflowData.triggerResponse.closeFunction();
+		}
+
+		delete this.workflowData[id];
+	}
+
+}