taskbuffer/ts/taskbuffer.classes.taskmanager.ts

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import * as plugins from './taskbuffer.plugins';
import { Task } from './taskbuffer.classes.task';
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// interfaces
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import { Objectmap } from '@pushrocks/lik';
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export class TaskManager {
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public taskMap = new plugins.lik.Objectmap<Task>();
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private cronJobMap = new plugins.lik.Objectmap<ICronJob>();
constructor() {
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// nothing here
}
/**
* checks if a task is already present
* @param taskNameArg
*/
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public getTaskByName(taskNameArg): Task {
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return this.taskMap.find(itemArg => {
return itemArg.name === taskNameArg;
});
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}
/**
* adds a Task to the TaskManager
* @param taskArg
*/
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public addTask(taskArg: Task): void {
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if (!taskArg.name) {
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throw new Error('taskArg needs a name to be added to taskManager');
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}
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this.taskMap.add(taskArg);
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}
/**
* adds and schedules a task at once
* @param taskArg
* @param cronStringArg
*/
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public addAndScheduleTask(taskArg: Task, cronStringArg: string) {
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this.addTask(taskArg);
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const taskName = taskArg.name;
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this.scheduleTaskByName(taskName, cronStringArg);
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}
/**
* triggers a task in the TaskManagerByName
* @param taskNameArg
*/
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public triggerTaskByName(taskNameArg: string): Promise<any> {
const taskToTrigger = this.getTaskByName(taskNameArg);
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if (!taskToTrigger) {
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throw new Error(`There is no task with the name of ${taskNameArg}`);
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}
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return taskToTrigger.trigger();
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}
/**
* schedules the task by name
* @param taskNameArg
*/
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public scheduleTaskByName(taskNameArg: string, cronStringArg: string) {
const taskToSchedule = this.getTaskByName(taskNameArg);
const job = new plugins.cron.CronJob({
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cronTime: cronStringArg,
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onTick: () => {
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this.triggerTaskByName(taskNameArg);
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},
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start: true
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});
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this.cronJobMap.add({
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taskNameArg: taskToSchedule.name,
cronString: cronStringArg,
job: job
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});
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}
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public descheduleTaskByName(taskNameArg: string) {
const descheduledCron = this.cronJobMap.findOneAndRemove(itemArg => {
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return itemArg.taskNameArg === taskNameArg;
});
descheduledCron.job.stop();
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}
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/**
* returns all schedules of a specific task
* @param taskNameArg
*/
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public getSchedulesForTaskName(taskNameArg: string) {}
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}
export interface ICronJob {
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cronString: string;
taskNameArg: string;
job: any;
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}