task-scheduler/app/main/resources/cron.py

from flask_restful import Resource, request
from app.main import scheduler
import json
from datetime import datetime


def printing_something(text):
    print("printing {0} at {1}".format(text, datetime.now()))


class Cron(Resource):
    def get(self):

        jobs = []

        for job in scheduler.get_jobs():
            jobdict = {}
            crontab = {}
            jobdict['id'] = job.id
            jobdict['name'] = job.name
            jobdict['args'] = str(job.args)
            jobdict['next_run_time'] = str(job.next_run_time)

            for f in job.trigger.fields:
                cuarval = str(f)
                crontab[f.name] = cuarval

            jobdict['crontab'] = crontab
            jobs.append(jobdict)

        return {'jobs': jobs}

    def post(self):
        json_data = request.get_json()
        if not json_data:
            return {'message': 'No input data provided'}, 400

        day = '*' if not json_data.get('day') else json_data.get('day')
        hour = '*' if not json_data.get('hour') else json_data.get('hour')
        minute = '*' if not json_data.get('minute') else json_data.get('minute')
        text = json_data.get('text')

        job = scheduler.add_job(printing_something, trigger='cron',
                                day=day, hour=hour, minute=minute, args=[text])

        return "job details: {0}".format(job)

    def delete(self, job_id):
        # json_data = request.get_json()
        # if not json_data:
        #     return {'message': 'No input data provided'}, 400

        # jobid = json_data.get('id')

        resp = scheduler.remove_job(job_id=job_id)

        return resp