On Aug 10, 2023, at 12:13, Kalpesh Patel <[email protected]
<mailto:[email protected]> > wrote:
The difficult part in debugging this is that when I do query three times
from the command line, it succeeds without any issue for me as well, but
when I update prices from GNC, it fails two times and then succeeds third
time consistently. So this is not an issue with throttling from TSP source
which you validated as well. Is there more in terms of debugging this by any
chance? Can I use STDERR and STDOUT from Perl to emanate messages to console
but not interfere with what JSON comes back or butcher the response back to
gnc-fq-helper so it doesn't bomb to run a full cycles from GNC to test? Any
help in debugging is appreciated.
Kalpesh,
Many, but not all, of the F::Q modules make use of the Smart::Comments
module. TSP.pm is one of them. The environment variable DEBUG will need
to be set, and with no changes to the Perl code you should see helpful
information printed to STDERR. In the code, these are lines that begin
with "###" (note, just 3 pound signs) in those modules using
Smart::Comments.
A quick look at the TSP module and I see two where the "tsp" method will
return *without* setting "success" and "errormsg" for any of the symbols
passed to it. This will happen if the http get call fails, or whatever
is downloaded is not 2 or more lines.
my $reply = $ua->get($url, @HEADERS);
### [<now>] url : $url
### [<now>] reply: $reply
return unless ($reply->is_success);
my @line = split(/\n/, $reply->content);
return unless (@line > 1);
In the code snippet, there are two examples Smart::Comments use which
could be useful in your case. With DEBUG set the code would print the
url to STDERR, and entire $reply object (status, headers, cookies, body).
Whether or not this helps you, the omission of not returning the proper
failure data is an issue.
Hope this helps.
Bruce S
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