Re: YAJL JSON data - how and when to save?

Thanks Scott,

If the program has crashed in production and the job is waiting for a
response to a message, then the environment variable route won't work. If I
use a data area or file, I can switch to debug mode and maybe get the
program to end correctly.
Regards

On Wed, 12 Jan 2022 at 01:56, Scott Klement <[email protected]> wrote:

> Hi Dave,
>
> I would typically create an environment variable.  These work great for
> CGI programs because you can set them in the Apache httpd.conf file, and
> they can be set separately for different <Directory>, <Location>, etc
> containers as needed.
>
> So for example, I might do something like this:
>
> ScriptAlias /apitest /QSYS.LIB/SKTESTAPI.LIB/MYPGM.PGM
>
> <Directory /QSYS.LIB/SKTESTAPI.LIB>
>    Require all granted
>    SetEnv API_LOG_FILE /var/apitest/requestData.txt
>    SetEnv QIBM_CGI_LIBRARY_LIST "TESTDB;SKUTILS"
> </Directory>
>
> The important part is API_LOG_FILE -- in this example, programs in the
> SKTESTAPI library will log their data to the
> /var/apitest/requestData.txt file.   If API_LOG_FILE isn't defined for a
> program, it would be in "production" mode and wouldn't log anything.
>
> Then in the program I would do something like this:
>
> dcl-pr getenv pointer EXTPROC('getenv');
>    name pointer value options(*STRING);
> end-pr;
>
> dcl-s logFile varchar(2048);
> dcl-s ptr pointer;
> dcl-s log int(10) inz(-1);
>   :
>   :
> ptr = getenv('API_LOG_FILE');
> if ptr = *null;
>    // no log needed
> else;
>    logFile = %str(ptr);
>    log = open( logFile
>              : O_CREAT + O_TRUNC + O_INHERITMODE + O_WRONLY
>                + O_TEXTDATA + O_TEXT_CREAT + O_CCSID
>              : 0
>              : 1208
>              : 0);
> endif;
>
> I included the prototype for "getenv" (get environment variable) in case
> you didn't already have it.  Typically, I'd have this in a copybook or
> similar.
>
> As always, in computer programming, there are many ways to accomplish
> the same thing, but this way has always worked nicely for me.  It's much
> more versatile than something like a data area because it can be defined
> in different places with different values in your httpd.conf
>
> Good luck!
>
>
> On 1/10/2022 11:40 AM, Dave wrote:
> > Hi,
> >
> >
> >
> > At the moment, during testing, each time my CGI programme receives JSON
> > data, I'm saving it to the IFS.
> >
> >
> > As I won't need to keep the JSON data once the application is deployed,
> what
> > would be the best way to dynamically turn on and off the save function of
> > the program in case it were needed? Seems to me there are many ways of
> > doing it. I could configure an environment variable, an URL,  change a
> data
> > area, etc. What do you people do ?
> >
> >
> >
> >
> > Thanks !
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