package p4_cache::p4;

use strict;
use warnings;
use base qw(P4);
use Params::Validate qw( validate_with SCALAR OBJECT BOOLEAN UNDEF ARR
+AYREF HASHREF);
use Data::Dumper;

use Class::MethodMaker [
    new => [ '-hash', '-init', 'new'],
    scalar => 'clientname'
    ];

sub init {
    my $self = shift;
    my %opts = validate_with(
        params => \@_,
        spec   => {
            'clientname' => { type => SCALAR },
            'port'       => { type => SCALAR, optional => 1 }
        },
    );
    my $port = $opts{'port'};
    if (!defined($port)) {
        my @p4_client = split /:/, $opts{'clientname'};
        $port = "p4mynet-p4p-".lc($p4_client[1]).":188";
    }

    # Connect to p4
    $self->SUPER::new();
    print Dumper($self);
    $self->SetClient($opts{'clientname'});
    $self->SetPort($port);
    $self->Connect() || die 'Unable to connect to p4 server';
    return $self;
} ## end of sub init 

When I am trying to execute this code through my.pl 
Call present in pl
my $obj = p4_cache::p4->new(clientname => 'keys:SITE:dev2');

I am getting a following error :
$VAR1 = bless( {
                 'clientname' => 'keys:SITE:dev2'
               }, 'p4_cache::p4' );
No '_p4client_ptr' member found in P4 object! at p4_cache/p4.pm line 3
+2.
No '_p4client_ptr' member found in P4 object! at p4_cache/p4.pm line 3
+3.
No '_p4client_ptr' member found in P4 object! at p4_cache/p4.pm line 3
+4.
Unable to connect to p4 server at p4_cache/p4.pm line 34.
No '_p4client_ptr' member found in P4 object!.

Looking forward for some help on this. Thanks in advance.