apt_checkup.in 3.49 KB
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#!/usr/bin/perl -w
#
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# Copyright (c) 2008-2017 University of Utah and the Flux Group.
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# 
# {{{GENIPUBLIC-LICENSE
# 
# GENI Public License
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and/or hardware specification (the "Work") to
# deal in the Work without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Work, and to permit persons to whom the Work
# is furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Work.
# 
# THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE WORK OR THE USE OR OTHER DEALINGS
# IN THE WORK.
# 
# }}}
#
use strict;
use English;
use Getopt::Std;
use Data::Dumper;
use JSON;
use File::Basename;

#
# Look for APT things that need to be dealt with.
#
sub usage()
{
    print "Usage: apt_checkup [-d] [-s]\n";
    exit(1);
}
my $optlist   = "dns";
my $debug     = 0;
my $oneshot   = 0;

#
# Configure variables
#
my $TB		     = "@prefix@";
my $TBOPS            = "@TBOPSEMAIL@";
my $TBLOGS           = "@TBLOGSEMAIL@";
my $MAINSITE         = @TBMAINSITE@;
my $LOGFILE          = "$TB/log/apt_checkup.log";
my $MANAGEINSTANCE   = "$TB/bin/manage_instance";
my $PROTOUSER	     = "elabman";
my $SUDO	     = "/usr/local/bin/sudo";
my $SLEEP_INTERVAL   = 600;

# un-taint path
$ENV{'PATH'} = '/bin:/usr/bin:/usr/local/bin:/usr/site/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

# Protos
sub fatal($);
	  
#
# Turn off line buffering on output
#
$| = 1; 

if ($UID != 0) {
    fatal("Must be root to run this script\n");
}

#
# Check args early so we get the right DB.
#
my %options = ();
if (! getopts($optlist, \%options)) {
    usage();
}
if (defined($options{"d"})) {
    $debug = 1;
}
if (defined($options{"s"})) {
    $oneshot = 1;
}

# Load the Testbed support stuff.
use lib "@prefix@/lib";
use emdb;
use Experiment;
use Node;
use libtestbed;
use emutil;
use libEmulab;
use GeniResponse;
use APT_Instance;
use POSIX qw(strftime ceil);

if (!$oneshot) {
    if (CheckDaemonRunning("apt_checkup")) {
	fatal("Not starting another apt checkup!");
    }
    # Go to ground.
    if (! $debug) {
	if (TBBackGround($LOGFILE)) {
	    exit(0);
	}
    }
    if (MarkDaemonRunning("apt_checkup")) {
	fatal("Could not mark daemon as running!");
    }
}

#
# Setup a signal handler for newsyslog.
#
sub handler()
{
    my $SAVEEUID = $EUID;
    
    $EUID = 0;
    ReOpenLog($LOGFILE);
    $EUID = $SAVEEUID;
}
$SIG{HUP} = \&handler
    if (! ($debug || $oneshot));

#
# Loop, asking for status for every instance.
#
while (1) {
    if (NoLogins()) {
	sleep(5);
	next;
    }
    print "Running at ".
	POSIX::strftime("20%y-%m-%d %H:%M:%S", localtime()) . "\n";

    exit(0)
	if ($oneshot);
    
    sleep($SLEEP_INTERVAL);
}
exit(0);

sub fatal($)
{
    my ($msg) = @_;

    if (! ($oneshot || $debug)) {
	#
	# Send a message to the testbed list. 
	#
	SENDMAIL($TBOPS,
		 "APT checkup died",
		 $msg,
		 $TBOPS);
    }
    MarkDaemonStopped("apt_checkup")
	if (!$oneshot);

    die("*** $0:\n".
	"    $msg\n");
}