On Mon, 19 Jan 2009, didier.cuffaut wrote:
> 2) From my first post, are these lines OK or wrong? (syntax error?)
>
> tmsp = the delay in future.. say 100 seconds
> exten=> ra,n,System(NOW='date %S')
> exten=> ra,n,System(let NOW=$NOW+$tmsp)
> exten=> ra,n,System(TOUCH_TMSP='date -d "1970-01-01 $NOW sec GMT+1"
> +%Y%m%d%H%M. %S) < NOTE THE 'M. %S'
>
> *********
>
> or this way ?
>
> exten=> ra,n,Set(touchtime=$[${EPOCH} + ${tmsp}])
> exten=> ra,n,Set(TOUCH_TMSP=${STRFM(${touchtime},GMT+1,%C%y%m%d%H%M%S)
>
> *********
Each invocation of system() executes a separate process. The environment
variables do not survive across processes. This method will not work.
Setting a channel variable and then passing it will work.
Your choices are to use system() or agi(). I'm leaning towards system()
because the script/executable does not interact with Asterisk and may have
value to you as a stand-alone command line utility.
You can write either in whatever language you are comfortable with. My
sharpest tool is C but if execution speed is not important any scripting
language (like shell) will do.
I'm a big fan of the getopt facility as it does all the nasty command line
parsing for you so your utilities have a consistent, self-documenting look
and feel. I even use it when I write AGIs. A year from now, which would
you rather "re-discover" in your dialplan:
exten =
s,n,agi(schedule-future-call,--archive,--max-retries=2,--offset=${TMSP},--retry-time=60,--wait-time=20)
or
exten = s,n,agi(schedule-future-call,${TMSP},60,,,20,a,,2)
I think I would pass the offset rather than the absolute. I don't like to
clutter up my dialplans too much.
Thanks in advance,
------------------------------------------------------------------------
Steve Edwards [email protected] Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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