This makes a lot of sense thank you. But I am still unsure about how
to create a delay. If I were to create a command with a Timer in it
would it cause a delay in calling the next command in the queue?
On Sep 30, 8:33 am, Thomas Broyer <[EMAIL PROTECTED]> wrote:
> On 29 sep, 17:49, "Peter D." <[EMAIL PROTECTED]> wrote:
>
>
>
> > I've read a few posts on here on how to delay loops and such using
> > Timers but I am unsure if they fit with my particular needs. I am
> > writing a feature for a GWT app I inherited that controls application
> > server states. (e.g. Start/Stop/Restart etc). I thought it would be a
> > cool idea to allow the users to set delays between each command sent
> > to the app server.
>
> > Example:
>
> > SERVER1 - RESTART
> > DELAY 15 SECONDS
> > SERVER2 - RESTART
> > DELAY 15 SECONDS
> > ...
>
> > The problem I am having is with the delaying. Using a Timer would not
> > work because the timers return instantly when you set them on a
> > schedule. So any servers set with an action below any timers would
> > start right away. And all delay timers would start almost at the same
> > time.
>
> > The functionality I want is to be able to go through that list and do
> > each action one by one. Send restart server 1 command, delay 15
> > seconds, send restart server 2 command, delay 15 seconds, etc...
>
> > I would appreciate any suggestions or insights on this problem, thank
> > you.
>
> Push "commands" into a queue.
> Commands are all asynchronous ("server restart" might be synchronous
> if you don't wait for a response that the restart order has been
> received and taken into account), so you'll wait for the command to
> complete before launching the following one.
> In a few word:
> - each command would know how to run and report completeness
> (AsyncCallback for RPCs, RequestCallback for RequestBuilder, an
> interface of your choice for Timers that'd be called from the Timer's
> run() method)
> - your callback passed to each command's "run()" method simply
> dequeue and run and the next command, passing itself as the callback
> (to dequeue and run the next command, etc.)
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