#!/usr/bin/perl

use strict;
use warnings;

my @array;
open(my $fh,"<","file3")
  or die "Failed to open file: $!\n";
while(<$fh>) {
    chomp;
    push @array,$_;
}
close $fh;

foreach my $line(@array)
{
    if($line =~ /.*([0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]).*logged in\((.*)\).*/gi)
    {
       print $1,",$2,"\n";
    }

}

example file: file3

com.cn.dat.2015-04-03.log.ms.com logged in(fengcx)stack.over com.cn.dat.2015-04-05.log.ms.com logged in(mike)this.is com.cn.dat.2015-04-05.log.ms.com (mike)this.is