#!/usr/bin/perl
#!/usr/bin/env perl
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
BEGIN
{
  $::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
}
use lib "$::XCATROOT/lib/perl";

use strict;
use xCAT::Table;
use xCAT::MsgUtils;
use Getopt::Long;

my $usage_string=
"Usage:
  replaycons node [bps] [tail]
  replaycons -h|--help 
  replaycons -v|--version
    bps          Specifies the display rate. 
                 The default is 19200.
    tail         Specifies the number of bytes to be displayed. 
                 The default displays all.
    -h|--help    Display this usage statement.
    -v|--version Display the version number.";

my $version_string="Version 2.0";

$Getopt::Long::ignorecase=0;
  if(!GetOptions(
      'h|help'     => \$::HELP,
      'v|version'  => \$::VERSION)) {
    exit(1);
  }
  if ($::HELP) {  
    print "$usage_string\n";
    exit(0);
  }
  if ($::VERSION) { 
    print "$version_string\n";
    exit(0);
  }

if (@ARGV<1) { 
  print "Please specify a node name.\n"; 
  exit(1);
}
 
my $node = @ARGV[0];
my $bps = 19200;
if (@ARGV>1) { 
  $bps=@ARGV[1];
  if ($bps==0) {$bps = 19200;}
}
my $tail=0;
if (@ARGV>2) { $tail=@ARGV[2];}
print "node=$node, bps=$bps, tail=$tail\n";

# get the conserver for the node
my $conserver;
my $hmtab = xCAT::Table->new('nodehm');
if ($hmtab) {
  my $ent=$hmtab->getNodeAttribs($node,['node', 'conserver']);
  if ($ent->{conserver}) {$conserver=$ent->{conserver};}
} else {
  print "nodehm table cannot be opened\n";
  exit(1);
}
my $file = "/var/log/consoles/$node";

#if has conserver, goto conserver the execute replaycons command
my @hostinfo=xCAT::Utils->determinehostname();
my %iphash=();
foreach(@hostinfo) {$iphash{$_}=1;}
if (($conserver) && ($iphash{$conserver} != 1)) {
  system("ssh -o BatchMode=yes $conserver replaycons $node $bps $tail 2>&1");
  exit(0);
}
 

my $cps = $bps / 8;
my $ms = 1 / $cps;
my $msc = 0;
my $debug = 0;
my @c;

select(STDOUT);
$| = 1;

if(!open(FILE,$file)) {
  print "replaycons: cannot open $file\n";
  exit(1);
}

if($tail > 0) {
  seek(FILE,-$tail,2);
}

while(<FILE>) {
  @c = split(//);
  foreach(@c) {
    print $_;
    $msc += $ms;
    if($msc > .1) {
      select(undef, undef, undef, $msc);
      $msc = 0;
    }
  }
}

close(FILE);

exit(0);