use Exception::Class (
    'MyException',

    'Commands' => { isa => 'MyException' },

    'Timeout' => {
        isa => 'Commands',
        description =>
          'These exceptions are resulted from running the metrics commands'
    },
    'DBError' => {
        isa         => 'MyException',
        description => 'DB returned error'
      }

);
ThrowMyException();

sub ThrowMyException() {

    eval{MyException::Commands::Timeout->throw(error=>"This is error due to timeout");};


        my $err;

        if($err=Exception::Class->caught('MyException::Commands::Timeout')){
             #print Dumper($err);
             #print "err is of type ".ref($err);
             die $err->{"description"}.": ".$err->{"error"};
        }
        elsif ( $err = Exception::Class->caught("MetricsException") ) {
            #print Dumper($err);
            die $err->error;
        }


}