#!/usr/bin/perl
# 
# This renames a server (and the DRBD resources and LVs below it). Given the nature of this program, it runs 
# on the node directly, and SSH's into the peer(s) to update the DRBD config files and rename LVs. Normally,
# this should run on Node 1. 
# 
# Exit codes;
# 0 = Normal exit.
# 1 = Any problem that causes an early exit.
# 
# TODO: 
# 

use strict;
use warnings;
use Anvil::Tools;
require POSIX;

my $THIS_FILE           =  ($0 =~ /^.*\/(.*)$/)[0];
my $running_directory   =  ($0 =~ /^(.*?)\/$THIS_FILE$/)[0];
if (($running_directory =~ /^\./) && ($ENV{PWD}))
{
	$running_directory =~ s/^\./$ENV{PWD}/;
}

# Turn off buffering so that the pinwheel will display while waiting for the SSH call(s) to complete.
$| = 1;

my $anvil = Anvil::Tools->new();

# Read switches (target ([user@]host[:port]) and the file with the target's password. If the password is 
# passed directly, it will be used. Otherwise, the password will be read from the database.
$anvil->data->{switches}{'job-uuid'} = "";
$anvil->data->{switches}{'new-name'} = "";
$anvil->data->{switches}{'old-name'} = "";
$anvil->Get->switches;
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, secure => 0, key => "log_0115", variables => { program => $THIS_FILE }});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { 
	'switches::new-name' => $anvil->data->{switches}{'new-name'},
	'switches::old-name' => $anvil->data->{switches}{'old-name'},
	'switches::job-uuid' => $anvil->data->{switches}{'job-uuid'},
}});

$anvil->Database->connect();
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 3, secure => 0, key => "log_0132"});
if (not $anvil->data->{sys}{database}{connections})
{
	# No databases, update the job, sleep for a bit and then exit. The daemon will pick it up and try 
	# again after we exit.
	$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "error_0077"});
	sleep 10;
	$anvil->nice_exit({exit_code => 1});
}

# If we don't have a job UUID, try to find one.
if (not $anvil->data->{switches}{'job-uuid'})
{
	# Load the job data.
	$anvil->data->{switches}{'job-uuid'} = $anvil->Job->get_job_uuid({program => $THIS_FILE});
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { "switches::job-uuid" => $anvil->data->{switches}{'job-uuid'} }});
}

# If we still don't have a job-uuit, go into interactive mode.
if ($anvil->data->{switches}{'job-uuid'})
{
	# Load the job data.
	$anvil->Job->clear();
	$anvil->Job->get_job_details();
	$anvil->Job->update_progress({
		progress         => 1,
		job_picked_up_by => $$, 
		job_picked_up_at => time, 
		message          => "message_0190", 
	});
	
	# Job data will be in $anvil->data->{jobs}{job_data}
	run_jobs($anvil);
}
else
{
	# Interactive!
	interactive_question($anvil);
}


$anvil->nice_exit({exit_code => 0});


#############################################################################################################
# Functions                                                                                                 #
#############################################################################################################

# This actually provisions a VM.
sub run_jobs
{
	my ($anvil) = @_;
	
	
	
	return(0);
}