How to add delay in Omnet++? - time

Actually, The idea is that when a person get infected it becomes sick after some time (days or even weeks). How to do so? How could I add some time(or delay) into my code?
Thank you.

Schedule a self-message into the future. At that specific time point, the message will be delivered to the handleMessage() method where you can act accordingly.

Related

How to send "Is Typing" notifications until response task completed?

How to send Is Typing notification from bot application until bot process another response. I can see currently it is limited to 3 seconds, but I want to extend it until the next response come back from Bot.
Can anyone help me with this? I have seen a couple of approaches where they recommend showing recursively until your task finish its execution but not sure how to Implement this.
Currently, this is not a feature of bot framework. You cannot control the length of time of which the typing indicator is displayed for. Your best bet is to try to resend the typing indicator as many times as needed until you long-running task is completed. This will be a custom solution that there may already be examples of out there.
You can send the typing activity every couple seconds while your processing runs asynchronously. This uses a bit of extra bandwidth, so your call. e.g.
var search = searchclient.Documents.SearchAsync(query);
var typing = turnContext.Activity.CreateReply();
typing.Type = ActivityTypes.Typing;
do {
turnContext.SendActivityAsync(typing);
} while (!search.Wait(2000));
var results = search.Result.Results;
Or set the wait to 4 seconds, or a random number between 2 and 5 seconds, so it looks like the bot is typing a little, thinking, then typing more...
Virtually all chats employ forms of faking the "real time" presence of the typing indicator. You are best to not even try, instead letting it vary randomly at the client side, and heuristically altering to your own logic, and have any end event cancel it. Especially if your API footprint is part of your operating cost.

Laravel Raffle Project. Is a Queue the best way to achieve this?

I'm creating a raffle site as a small side project. It will handle multiple raffles each with an end time. At the end of each raffle a single winner is chosen.
Are Laravel Jobs the best way to go with this? Do I just create a single forever-repeating job to check if any raffles have ended and need a winner?
If not, what would be the best way to go?
I don't think that forever-repeating scripts are generally a good idea.
I just create a single forever-repeating job
This is almost never a good idea. It has its applications in legacy code bases but websockets and events are best considered for this job. Also, you have the benefit of using a really good framework like Laravel, so take advantage of it
Websockets
If you want people to be notified in real time in the browser.
If you have all your users subscribe to a websocket channel when they load the page, you can easily send a message to a websocket server to all subscribed clients (ie browsers) to let them know who the winner is.
Then, in your client side code (Javascript), you can parse that message to determine who the winner is and render a pop up that let's the user know.
Events
If you don't mind a bit of a delay, most definitely use events for this.
At the end of every action that might potentially end a raffle (ie, a name is chosen at random by a computer - function chooseName()). Fire an event that notifies all participants in the raffle.
https://laravel.com/docs/5.2/events
NB: I've listed the above two as separate issues, but actually, the could be used together. For example, in the event that a name is chosen at random, determine if the raffle is over and notify clients via a websocket connection.
Why I wouldn't use delayed Jobs
The crux of the reason - maintainability
Imagine a scenario where something extends the time of your raffle by a week. This could've happened because a raffle was cheated on or whatever (can't really think of all the use cases in that area).
Now, your job has a set delay in place - is it really a good programming principle to have to change two things when only one scenario changed? Nope. Having something like an event in place - onRaffleEnd - explicitly looks for the occurrence of an event. Laravel doesn't care when that event happens.
Using delayed Jobs can work - it's just not a good programming use case in your scenario and limits what you're able to do in the longer run. It will force you to make more considerations when unforeseen circumstances come along as well as when you want to change things. This also decentralizes the logic related to your raffle. Whilst decoupling code is good practice, having logic sit in completely different places makes maintenance a nightmare.

Listen for Rally defect status change

I'm investigating extending the functionality of Rally for my company.
Here's what we want to do: When a user changes the 'State' of a defect we want to run some custom code. I'd like to attach a listener to the 'State' dropdown field so that when the state changes the listener fires some code.
Is this possible? I've been doing some research and everything seems to indicate no.
Any suggestions or pointers or tips would be gratefully appreciated..
thanks in advance,
Brian.
I've set up a recurring Windows scheduled task that executes a script to look for such changes. It's polling, but it runs very fast since it's looking for specific criteria ((state==XYZ) and (Children == nil)).
I believe with the new API I could change that to return results since the last poll time (which I would store each time I poll).
HTH

Can I send multiple ShellToast notifications at once?

What happens, if I send multiple ShellToast notifications from background agent at once, for example in ToDo list app I want to notify that 3 tasks should be finished today?
Is it allowed or recommended? Would the user see all three toasts or only the first one?
The scheduled agent only runs once and it's up to you to manage which toast will be shown. In those scenarios you should be using a counter...possibly.
The way I've worked around this sort of thing in the past is just track a time or which toasts have been shown in sort of a queue and just show one every update so you could just rotate through your queue throughout the day until the tasks in app are no longer valid. Or, based on the phone's time, determine what to show (they fire every 30 min or so).
Ultimately, the optimal way is probably having one toast that says "You have 3 tasks to complete" etc etc.
Hope one of those solutions might help!
// Jed

I m tring to implement ajax polling in my code but i want to make sure that the server has an update before requesting for the data

I m tring to implement ajax polling in my code but i want to make sure that the server has an update before requesting for the data.How can I accomplish this?
the entire point of polling is you don't know if the server is ready. If you knew, you wouldn't have to poll...
One thing you can do to make the load on the server lighter is increase the interval between polls the longer it takes. So, initially poll every 2 seconds, but after say five tries, go to five seconds, and after five tries, maybe give up and give a message. Depends on your specific use case though...

Resources