#!/usr/bin/env perl
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
#-------------------------------------------------------
package xCAT_plugin::NFSsn;
use xCAT::Table;

use xCAT::Utils;

use xCAT::MsgUtils;
use File::Path;
use Getopt::Long;

#-------------------------------------------------------

=head1 
  xCAT plugin package to setup of nfs and mount /install 
  and /tfptboot


#-------------------------------------------------------

=head3  handled_commands 

Check to see if on a Service Node
Check database to see if this node is a NFS server
   should be always
Call  setup_NFS

=cut

#-------------------------------------------------------

sub handled_commands

{
    my $rc = 0;
    if (xCAT::Utils->isServiceNode())
    {
        my @nodeinfo   = xCAT::Utils->determinehostname;
        my $nodename   = pop @nodeinfo;                    # get hostname
        my @nodeipaddr = @nodeinfo;                        # get ip addresses
        my $service    = "nfsserver";
        $rc = xCAT::Utils->isServiceReq($nodename, $service, \@nodeipaddr);
        if ($rc == 1)   
        {

            # service needed on this Service Node
            $rc = &setup_NFS($nodename);                   # setup NFS
            if ($rc == 0)
            {
                xCAT::Utils->update_xCATSN($service);
            }
        }
        else
        {
            if ($rc == 2)  # this is probably no longer needed on Service Node
            {    # just start the daemon
                my $cmd = "service nfs start";
                xCAT::Utils->runcmd($cmd, 0);
                if ($::RUNCMD_RC != 0)
                {    # error
                    xCAT::MsgUtils->message("S", "Error on command: $cmd");
                    return 1;
                }
            }
        }
    }
    return $rc;
}

#-------------------------------------------------------

=head3  process_request 

  Process the command

=cut

#-------------------------------------------------------
sub process_request
{
    return;
}

#-----------------------------------------------------------------------------

=head3 setup_NFS 

    Sets up NFS services and mounts /install  
	on /install from Master Node  

=cut

#-----------------------------------------------------------------------------
sub setup_NFS
{
    my ($nodename) = @_;
    my $rc         = 0;
    my $installdir = "/install";    # default

    # read DB for nodeinfo
    my $master;
    my $os;
    my $arch;

    # make sure vsftpd is started
    mkpath "/var/ftp/install";
    mkpath "/var/ftp/tftpboot";
    system "mount -o bind $installdir /var/ftp/install";
    system "mount -o bind /tftpboot /var/ftp/tftpboot";
    my $cmd = "service vsftpd start";
    xCAT::Utils->runcmd($cmd, 0);
    if ($::RUNCMD_RC != 0)
    {    # error
         xCAT::MsgUtils->message("S", "Error on command: $cmd");
    }
    my $cmd = "chkconfig vsftpd on";
    xCAT::Utils->runcmd($cmd, 0);
    if ($::RUNCMD_RC != 0)
    {    # error
         xCAT::MsgUtils->message("S", "Error on command:$cmd");
    }
    my $retdata = xCAT::Utils->readSNInfo($nodename);
    if ($retdata->{'arch'})
    {                               # no error
        $master = $retdata->{'master'};
        $os     = $retdata->{'os'};
        $arch   = $retdata->{'arch'};

        # read install directory from database, if it exists
        my @installdir1 = xCAT::Utils->get_site_attribute("installdir");
        if ($installdir1[0])
        {
            $installdir = $installdir1[0];
        }
        if (!(-e $installdir))
        {
            mkdir($installdir);
        }
        # the start of nfs is not really needed for the mount
		# remove in the future
        my $cmd = "chkconfig nfs on";
        xCAT::Utils->runcmd($cmd, 0);
        if ($::RUNCMD_RC != 0)
        {    # error
            xCAT::MsgUtils->message("S", "Error on command:$cmd");
        }

        # make sure nfs is restarted
        my $cmd = "service nfs stop";
        xCAT::Utils->runcmd($cmd, 0);
        if ($::RUNCMD_RC != 0)
        {    # error
            xCAT::MsgUtils->message("S", "Error on command: $cmd");
            return 1;
        }

        # make sure nfs is started
        my $cmd = "service nfs start";
        xCAT::Utils->runcmd($cmd, 0);
        if ($::RUNCMD_RC != 0)
        {    # error
            xCAT::MsgUtils->message("S", "Error on command: $cmd");
            return 1;
        }

        # check to see if install  already mounted
        my $directory = $installdir;
        $cmd = "df -P $directory";
        my @output = xCAT::Utils->runcmd($cmd, -1);
        my $found = 0;
        foreach my $line (@output)
        {
            my ($file_sys, $blocks, $used, $avail, $cap, $mount_point) =
              split(' ', $line);
            if ($mount_point eq $directory)
            {
                $found = 1;
                last;
            }
        }
        if ($found == 0)
        {

            # need to  mount the directory
            my $cmd = " mount -o rw,nolock $master:$directory $directory";
            xCAT::Utils->runcmd($cmd, 0);
            if ($::RUNCMD_RC != 0)
            {    # error
				 $rc=1;
                xCAT::MsgUtils->message("S", "Error $cmd");
            }
        }

    }
    else
    {            # error reading Db
        $rc = 1;
    }
    if ($rc == 0)
    {

        # update fstab to mount on reboot
        $cmd = "grep $master:$installdir $installdir  /etc/fstab  ";
        xCAT::Utils->runcmd($cmd, -1);
        if ($::RUNCMD_RC != 0)
        {
            `echo "$master:$installdir $installdir nfs timeo=14,intr 1 2" >>/etc/fstab`;
        }
    }
    return $rc;
}
1;