https://github.com/raizam/simpleazurescheduler

A simple standalone scheduler library relying on Azure Table Storage.
https://github.com/raizam/simpleazurescheduler

Last synced: about 2 months ago
JSON representation

A simple standalone scheduler library relying on Azure Table Storage.

• Host: GitHub
• URL: https://github.com/raizam/simpleazurescheduler
• Owner: raizam
• Created: 2013-02-02T21:29:14.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2013-02-03T18:40:22.000Z (almost 12 years ago)
• Last Synced: 2023-04-09T06:48:04.022Z (almost 2 years ago)
• Language: C#
• Size: 133 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
SimpleAzureScheduler

====================

A simple standalone scheduler library relying on Azure Table Storage.

> Currently this is a prototype, a pre-alpha version that still needs to be tested. To be used at your own risk.

##Design goals

* Optimize Storage transactions as much as possible. This is done using RangeQueries and BatchOperations only, grouping transactions as much as possible. Scheduling and Fetching 50 tasks can be done with 3 transactions only.

* Simple and non intrusive API

* Scheduler class has to be thread safe (and should already be)

##How to use it

* Take a look at the code snippet in the unit test project

* The Scheduler class expect to get a storage connection string from the ConfigurationManager, using the key "StorageConnectionString"

* Before compiling don't forget to add "Azure Storage" package from nuget

			using (Scheduler scheduler = new Scheduler())

            {

                for (int i = 0; i < 100; i++)

                {

                    

                    TimeSpan ts = TimeSpan.FromSeconds(random.Next(10)); // timespan in the next 10 seconds

                    object taskData = new { Title = string.Format("Do it in {0} seconds", ts.TotalSeconds) }; //task data object can be anything System.Helper.Json can handle

					

					

					//How to schedule a task:

                    scheduler.ScheduleTask(Tasks.Todo, ts, taskData); //thread safe

                }

                IDisposable trigger = Execute.AtInterval(TimeSpan.FromSeconds(1), x => //execute every second

                {

                    //how to retrive tasks

                    foreach (ScheduledTask task in scheduler.FetchScheduledItems(Tasks.Todo))

                    {

                        dynamic data = task.GetData(); // there's also a generic version: T GetData()

                        string title = data.Title.ToString();

                        Trace.WriteLine(string.Format("{2} - Processed task {0} - Category: {1} ", task.Id, title, DateTime.Now.ToLongTimeString()));

                        scheduler.Close(task); //close the task (otherwise it will be executed again later)

                    }

                });

                Thread.Sleep(10000); //wait to let the timer execute incomming tasks

                trigger.Dispose(); //stops executing

            }//the scheduler must be always disposed to makes sure everything was saved