Re: [HTCondor-users] Default value for attributes from environment variables in submit file

[Brian Bockelman <bbockelm@xxxxxxxxxxx>]

Seems to be a reasonable request to extend the ENV syntax to:

mypath = $ENV(MY_PATH:foo)

Brian

> On Sep 1, 2016, at 2:01 PM, John M Knoeller <johnkn@xxxxxxxxxxx> wrote:
> 
> In 8.4 you can use $INT and a temporary variable like this. 
> 
> mypath = $ENV(MY_PATH)
> mypath_is_udefined = "$(mypath)"=="UNDEFINED"
> if $INT(mypath_is_undefined)
>  mypath = /default/path
> endif
> 
> -----Original Message-----
> From: HTCondor-users [mailto:htcondor-users-bounces@xxxxxxxxxxx] On Behalf Of Marco Mambelli
> Sent: Thursday, September 1, 2016 12:15 PM
> To: htcondor-users@xxxxxxxxxxx
> Subject: [HTCondor-users] Default value for attributes from environment variables in submit file
> 
> Hi all,
> in a submit file I can refer to the environment using
> $ENV(VAR_NAME)
> If this is unset ENV returns UNDEFINED.
> Iâd like to have a default value.
> 
> All that I tried is not working:
> 1- this is not valid. Is interpreted as string:
> $ENV(MY_PATH:/default/path)
> 
> 2- this gives UNDEFINED (MY_PATH is not set. If set this works) path_attribute = $ENV(MY_PATH) path_with_default = $(path_attribute:/default/path)
> 
> 3- this expression is not evaluated (holds job):
> path_attribute = $ENV(MY_PATH)
> path_with_default = $$([isUndefined(path_attribute)])
> 
> 
> Is it there any way to have an attribute with the content of MY_PATH if this is set and a default value if this is not set?
> 
> Thank you,
> Marco
> 
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