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Forum Discussion

Charles_Harris's avatar
Charles_Harris
Icon for Nimbostratus rankNimbostratus
Jan 13, 2006

Perl Scripting (iControl) error handling...

Hi All,

 

 

I'm currently writting my first iControl based app using perl to monitor / react to a very simple scenario but I've come across a problem and I'm stumped.....

 

 

How can I handle errors, without the perl script stopping? - I need to be able to output friendly error messages and log them for further investigation....

 

 

eg. Wrong login credentials supplied etc.....

 

 

Thanks in advance!

 

 

-=ChaZ=-

 

dev
devops
iControl

4 Replies

  • Joe_Pruitt's avatar
    Joe_Pruitt
    Jan 13, 2006
    The only way I know how to do is is by wrapping the code with an eval

     

     

    http://perldoc.perl.org/functions/eval.html

     

    Click here

     

     

    Here's some sample code showing how you can use it:

     

     

    ----------------------------------------------------------------------------
 listPools
----------------------------------------------------------------------------
sub listPools()
{
  eval {
    $soapResponse = $Pool->get_list();
  };
  if ( $@ )
  {
    print "Error occurred\n";
    print "Error details: $@\n";
  }
  else
  {
    &checkResponse($soapResponse);
    my @pool_list = @{$soapResponse->result};
    print "Available Pools:\n";
    foreach $pool (@pool_list)
    {
      print "  $pool\n";
    }
  }
}

     

     

    -Joe
  • Charles_Harris's avatar
    Charles_Harris
    Icon for Nimbostratus rankNimbostratus
    Jan 14, 2006
    Hi Joe,

     

     

    Thanks for the tip, I must admit, I've seen this approach used in some other sample code although I wasn't overly sure how to implement it around the various Soap calls.

     

     

    I'll give it a try and see how I get on!

     

     

    Ps. I'm fairly new to Perl and iControl so the code sample is most welcome!!

     

     

    Cheers!

     

     

    -=ChaZ=-

     

  • Charles_Harris's avatar
    Charles_Harris
    Icon for Nimbostratus rankNimbostratus
    Jan 16, 2006
    Hi again......

     

     

    Please could you give me an example of how to wrap the Auth in the eval statements you previously mentioned?

     

     

    Currently mine looks like this....

     

     

    sub SOAP::Transport::HTTP::Client::get_basic_credentials

     

    {

     

    return "$USER" => "$PASSWORD";

     

    }

     

     

    But I'm not sure how to do the error bit.....

     

     

    Thanks in advance !!!

     

     

    Cheers,

     

     

    -=ChaZ=-

     

  • Joe_Pruitt's avatar
    Joe_Pruitt
    Jan 16, 2006
    I gave you an example in my post above. You wrap an eval around the method call.

     

     

    -Joe