xcat-core/xCAT-server/bin/replaycons

#!/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::Utils;
use xCAT::TableUtils;
use xCAT::NetworkUtils;
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";

#use confluent if it is there
if ((-x "/opt/confluent/bin/confetty") || (-x "/usr/bin/confetty")) {
    $file = "/var/log/confluent/consoles/$node";
}

#print "file=$file\n";

#if has conserver, goto conserver the execute replaycons command
my @hostinfo = xCAT::NetworkUtils->determinehostname();
my %iphash   = ();
foreach (@hostinfo) { $iphash{$_} = 1; }
if (($conserver) && ($iphash{$conserver} != 1)) {
    system("ssh -o BatchMode=yes $conserver $::XCATROOT/bin/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);