WebService::Plotly dies with HTTP::Response=HASH(...)

docdurdee has asked for the wisdom of the Perl Monks concerning the following question:

Dearest Monks, I'm trying to use the WebService::Plotly module. It works great on two computers (running p5.20.1 on OS X 10.10.3), but it dies without warnings on three other computers (running p5.20.1 on OS X 10.8.4) dumping: HTTP::Response=HASH(0x7f87ba65afe0) Do you have any suggestions as to how to solve this problem? Here is the code:

use Modern::Perl;
use WebService::Plotly;

my $plotly = WebService::Plotly->new( un  => $user,
                                      key => $key);
 
my @ss = map {[split]}(
   '2.1120     0.0047',
   '2.1160     0.0045',
   '2.1200     0.0058',
   '2.1240     0.0045',
   '2.1280     0.0036',
   '2.1320     0.0029',
   '2.1360     0.0024',
   '2.1400     0.0032',
   '2.1440     0.0020',
   '2.1480     0.0014',
);

my @ds = map{$_->[0]} @ss;
my @ps = map{$_->[1]} @ss;

my $response = $plotly->plot( \@ds, \@ps );

print "url is: $response->{url} \n";
print "filename on our server is: $response->{filename} \n";
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For the computers that it works, I can dump $response:

$VAR1 = {
          'filename' => 'plot from API (7)',
          'warning' => '',
          'url' => 'https://plot.ly/~demianriccardi/113',
          'message' => '',
          'error' => ''
        };
[download]

Thanks! D

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Re: WebService::Plotly dies with HTTP::Response=HASH(...) by Corion (Patriarch) on May 29, 2015 at 06:13 UTC
The module is documented to do that: All of the data calls return a response hash containing the keys url, message, warning, filename and error. Normally only url and filename will be interesting to you; however message can contain extra information and will be printed if verbose is set to 1, warning can contain warnings from the server and is always printed with warn(), while a value in the error key triggers the module to die. So, maybe you want to wrap the calls that can fail within `eval { ... }` and inspect the value you get back from the call? `use Data::Dumper; my $response; my $ok= eval { $response= $plotly->plot( ... ); 1 }; if( ! $ok ) { warn "Plotly error:"; die Dumper $@; }; ...` [download]	[reply] [d/l] [select]

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Re: WebService::Plotly dies with HTTP::Response=HASH(...)
by Corion (Patriarch) on May 29, 2015 at 06:13 UTC

The module is documented to do that:

All of the data calls return a response hash containing the keys url, message, warning, filename and error. Normally only url and filename will be interesting to you; however message can contain extra information and will be printed if verbose is set to 1, warning can contain warnings from the server and is always printed with warn(), while a value in the error key triggers the module to die.

So, maybe you want to wrap the calls that can fail within eval { ... } and inspect the value you get back from the call?

use Data::Dumper;

my $response;
my $ok= eval {
    $response= $plotly->plot( ... );
    1
};
if( ! $ok ) {
    warn "Plotly error:";
    die Dumper $@;
};

...
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