Just so I am clear,  I should not call stop(),  but instead call a return() and 
return something or other  (there is nothing to skip to - it is doing a data 
download and either it works or it failed).  Is there a preferred something to 
return?  And it is okay to write a message to the screen?  

I should add that when I first ran into this awhile back I asked what "failed 
gracefully" means,  and never received a response.  To me,  writing out a 
message to the user and stopping is graceful exit, but obviously it is not.  
What would help then, since this problem has been cited by others, is more 
explicit guidelines as to what constitutes a graceful exit with examples.  My 
$0.02

-Roy



> On Sep 24, 2021, at 8:03 AM, Ben Bolker <bbol...@gmail.com> wrote:
> 
>  I think you're not supposed to stop().
> 
>  You should just proceed with the other tests (skipping any tests/examples 
> that depend on access to the inaccessible internet resources, or values 
> derived from the failing call, to work)
> 
>  Does that help?
> 
> On 9/24/21 10:49 AM, Roy Mendelssohn - NOAA Federal via R-package-devel wrote:
>> Hi All:
>> I am getting dinged again on CRAN  (just Solaris for some reason),  and the 
>> problem is how to exit if there is a failure of accessing the resource,  I 
>> know it has been discussed here before,  but I just am not understanding 
>> what is desired to end properly. As I have been reminded:
>> 'Packages which use Internet resources should fail gracefully with an 
>> informative message
>> if the resource is not available or has changed (and not give a check 
>> warning nor error).'
>> All internet calls are wrapped in 'try()'.  If that shows an error,  I  
>> write a message to the screen about the error,  and call stop(), perhaps 
>> with a further message in that call.   Somehow this does not appear to meet 
>> the standard.    Can someone then please tell me what I should do instead.  
>> The point is I have checked that the access to the internet resources has 
>> worked,  i have seen that it hasn't,  now what should be the steps to take 
>> to exit gracefully.
>> I also want to add to what others have said about the frustrations of 
>> dealing with Solaris.  I have spent a fair amount of time getting things to  
>> work with Solaris which no one uses.  In this instance the package test is 
>> only failing on Solaris.   Not a good use of limited time IMO.
>> Thanks for any advice.
>> -Roy
>> **********************
>> "The contents of this message do not reflect any position of the U.S. 
>> Government or NOAA."
>> **********************
>> Roy Mendelssohn
>> Supervisory Operations Research Analyst
>> NOAA/NMFS
>> Environmental Research Division
>> Southwest Fisheries Science Center
>> ***Note new street address***
>> 110 McAllister Way
>> Santa Cruz, CA 95060
>> Phone: (831)-420-3666
>> Fax: (831) 420-3980
>> e-mail: roy.mendelss...@noaa.gov www: https://www.pfeg.noaa.gov/
>> "Old age and treachery will overcome youth and skill."
>> "From those who have been given much, much will be expected"
>> "the arc of the moral universe is long, but it bends toward justice" -MLK Jr.
>> ______________________________________________
>> R-package-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-package-devel
> 
> -- 
> Dr. Benjamin Bolker
> Professor, Mathematics & Statistics and Biology, McMaster University
> Director, School of Computational Science and Engineering
> Graduate chair, Mathematics & Statistics
> 
> ______________________________________________
> R-package-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-package-devel

**********************
"The contents of this message do not reflect any position of the U.S. 
Government or NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new street address***
110 McAllister Way
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: roy.mendelss...@noaa.gov www: https://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected" 
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.

______________________________________________
R-package-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-package-devel

Reply via email to