sa_daemon.in 10.6 KB
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#!/usr/bin/perl -w
#
# GENIPUBLIC-COPYRIGHT
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# Copyright (c) 2008-2010 University of Utah and the Flux Group.
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# All rights reserved.
#
use strict;
use English;
use Getopt::Std;

#
# Look for things that need to be expired and resources released. This is
# incredibly primitive at the moment.
#
sub usage()
{
    print "Usage: sa_daemon [-d] [-n]\n";
    exit(1);
}
my $optlist   = "dn";
my $debug     = 0;
my $impotent  = 0;

#
# Configure variables
#
my $TB		  = "@prefix@";
my $TBOPS         = "@TBOPSEMAIL@";
my $TBLOGS        = "@TBLOGSEMAIL@";
my $PGENIDOMAIN   = "@PROTOGENI_DOMAIN@";
my $PGENISUPPORT  = @PROTOGENI_SUPPORT@;
my $PGENICLRHOUSE = @PROTOGENI_CLEARINGHOUSE@;
my $LOGFILE       = "$TB/log/sa_daemon.log";
my $EMULAB_PEMFILE = "$TB/etc/genisa.pem";
my $CLEANUPSLICE  = "$TB/sbin/cleanupslice";

# 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");
}

#
# Exit if not a protogeni site.
#
if (! $PGENISUPPORT) {
    exit(0);
}

#
# 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{"n"})) {
    $impotent = 1;
}

# Do this early so that we talk to the right DB.
use vars qw($GENI_DBNAME);
$GENI_DBNAME = "geni";

# Load the Testbed support stuff.
use lib "@prefix@/lib";
require GeniDB;
require GeniUtil;
require GeniSlice;
require GeniCertificate;
require GeniUser;
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require libGeni;
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use Experiment;
use Node;
use libtestbed;
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use emutil;
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use libEmulab;
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use POSIX qw(strftime ceil);
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#
# So we know who/what we are acting as.
#
my $certificate = GeniCertificate->LoadFromFile($EMULAB_PEMFILE);
if (!defined($certificate)) {
    fatal("Could not get uuid/urn from $EMULAB_PEMFILE\n");
}
Genixmlrpc->SetContext(Genixmlrpc->Context($certificate));
Genixmlrpc->SetTimeout(10);
$ENV{'MYUUID'} = $certificate->uuid();
$ENV{'MYURN'} = "urn:publicid:IDN+@OURDOMAIN@+authority+sa";

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if (CheckDaemonRunning("sa_daemon")) {
    fatal("Not starting another sa daemon!");
}
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# Go to ground.
if (! $debug) {
    if (TBBackGround($LOGFILE)) {
	exit(0);
    }
}
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if (MarkDaemonRunning("sa_daemon")) {
    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);

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GeniUtil::FlipToGeniUser();

#
# Keep track of who has been warned. Do not expire until 24 hours after
# warning.
#
my %warned  = ();
my %expires = ();
my $hours   = 24;
my $grace   = $hours * 3600;

#
# Send out warnings about 24 hours ahead of time. Do not delete until
# at least 24 hours goes by, even if expired.
#
sub WarnSlices()
{
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    #
    # This query purposely skips slices that are attached to cooked
    # mode experiments; those that have a non-null exptidx of a local
    # experiment.
    #
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    my $query_result =
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	GeniDB::DBQueryWarn("select idx,expires,UNIX_TIMESTAMP(expires), ".
			    "   UNIX_TIMESTAMP(created) ".
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			    "  from geni_slices ".
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			    "where shutdown is null and exptidx is null");
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    while (my ($idx,$expires,$stamp,$created) =
	   $query_result->fetchrow_array()) {
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	if (exists($expires{$idx})) {
	    if ($expires{$idx} == $stamp) {
		# Already warned, skip.
	    }
	    else {
		# Expiration changed, delete and catch in the next loop
		print STDERR "Expiration changed for slice $idx to $expires\n";
		delete($expires{$idx});
		delete($warned{$idx});
	    }
	    next;
	}
	#
	# If expiration is greater then 24 hours out, skip. 
	#
	if ($stamp > time() + $grace) {
	    delete($expires{$idx});
	    delete($warned{$idx});
	    next;
	}
	my $slice = GeniSlice->Lookup($idx);

	if (!defined($slice)) {
	    # Slice is gone, lets not worry.
	    next;
	}
	if ($slice->Lock() != 0) {
	    print STDERR "Could not lock slice $slice.\n";
	    goto skip;
	}
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	my $geniuser  = GeniUser->Lookup($slice->creator_uuid(), 1);
	my $emailaddr = $geniuser->email();
	my $urn       = $slice->urn();
	my $hrn       = $slice->hrn();
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	my $diff      = $stamp - time();
	my $unit;
	if ($diff < 0) {
	    $diff = 0;
	    $unit = "minutes";
	}
	elsif ($diff < 60) {
	    $diff = POSIX::ceil($diff / 60);
	    $unit = "minutes";
	}
	else {
	    $diff = POSIX::ceil($diff / 3600);
	    $unit = "hours";
	}
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	if ($impotent) {
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	    if ($stamp - $created < $grace) {
		print STDERR
		    "Short lived slice is going to expire: ".
		    "$geniuser,$idx,$hrn,$diff $unit\n";
	    }
	    else {
		print STDERR
		    "Would send mail to $geniuser: $idx,$hrn,$diff $unit\n";
	    }
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	    $warned{$idx}  = time();
	    $expires{$idx} = $stamp;
	    $slice->UnLock();
	    goto skip;
	}
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	#
	# If this is a short lived slice then do not bother to send
	# email. Assume negative reenforcement will teach users what
	# to do.
	#
	if ($stamp - $created < $grace) {
	    print STDERR
		"Short lived slice is going to expire: ".
		"$geniuser,$idx,$hrn,$diff $unit\n";
	}
	else {
	    print STDERR
		"Sending mail to $geniuser about expiring slice $idx,$hrn\n";
	    SENDMAIL($emailaddr, "Slice $urn expiring",
		     "Slice $urn\n".
		     "is going to expire in approximately $diff $unit.\n".
		     "Please renew it or let it expire if you not using it.\n",
		     undef, "CC: $TBOPS");
	}
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	$warned{$idx}  = time();
	$expires{$idx} = $stamp;
	$slice->UnLock();
	
      skip:
	$slice->Flush()
	    if (defined($slice));
    }
}

#
# Look for slices that have expired.
#
sub ExpireSlices()
{
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    #
    # This query purposely skips slices that are attached to cooked
    # mode experiments; those that have a non-null exptidx of a local
    # experiment.
    #
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    my $query_result =
	GeniDB::DBQueryWarn("select idx from geni_slices ".
			    "where UNIX_TIMESTAMP(now()) > ".
			    "      UNIX_TIMESTAMP(expires) and ".
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			    "      shutdown is null and exptidx is null");
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    while (my ($idx) = $query_result->fetchrow_array()) {
	my $slice = GeniSlice->Lookup($idx);

	if (!defined($slice)) {
	    # Slice is gone, lets not worry.
	    next;
	}
	if ($slice->Lock() != 0) {
	    print STDERR "Could not lock slice $slice.\n";
	    goto skip;
	}
	if (! $slice->IsExpired()) {
	    $slice->UnLock();
	    delete($warned{"$idx"});
	    delete($expires{"$idx"});
	    goto skip;
	}
	if ($impotent) {
	    print STDERR "Would expire $slice\n";
	    $slice->UnLock();
	    goto skip;
	}
	my $geniuser  = GeniUser->Lookup($slice->creator_uuid(), 1);
	my $emailaddr = $geniuser->email();
	my $urn       = $slice->urn();
	my $hrn       = $slice->hrn();
	
	print STDERR "Expiring $slice\n";
	system("$CLEANUPSLICE -f -s $idx");
	if (! $?) {
	    $slice->UnLock();
	    goto skip;
	}
	SENDMAIL($emailaddr, "Slice $urn has expired",
		 "Slice $urn\n".
		 "has been expired. Sorry :-(\n",
		 undef, "CC: $TBOPS");
	
	delete($warned{"$idx"});
	delete($expires{"$idx"});
      skip:
	$slice->Flush()
	    if (defined($slice));
    }
}

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#
# Look for slices that need to be registered at the CH.
#
sub RegisterSlices()
{
    #
    # This query purposely skips slices that are attached to cooked
    # mode experiments; those that have a non-null exptidx of a local
    # experiment.
    #
    my $query_result =
	GeniDB::DBQueryWarn("select idx from geni_slices ".
			    "where registered=0 and exptidx is null");

    while (my ($idx) = $query_result->fetchrow_array()) {
	my $slice = GeniSlice->Lookup($idx);

	if (!defined($slice)) {
	    # Slice is gone, lets not worry.
	    next;
	}
	if ($slice->Lock() != 0) {
	    print STDERR "Could not lock slice $slice.\n";
	    goto skip;
	}
	my $creator = GeniUser->Lookup($slice->creator_uuid(), 1);
	if (!defined($creator)) {
	    print STDERR "Could not find creator for $slice\n";
	    $slice->UnLock();
	    goto skip;
	}
	if ($impotent) {
	    print STDERR "Would register $creator at the clearinghouse\n";
	    print STDERR "Would register $slice at the clearinghouse\n";
	    $slice->UnLock();
	    goto skip;
	}
	print "Registering $creator at the clearinghouse\n";
	if ($creator->Register() != 0) {
	    print STDERR "Could not register $creator at the clearinghouse\n";
	    $slice->UnLock();
	    goto skip;
	}
	print "Registering $slice at the clearinghouse\n";
	if ($slice->Register() != 0) {
	    print STDERR "Could not register $slice at the clearinghouse\n";
	    $slice->UnLock();
	    goto skip;
	}
	$slice->UnLock();
      skip:
	$slice->Flush()
	    if (defined($slice));
	$creator->Flush()
	    if (defined($creator));
    }
}

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#
# Renew slices and slivers for local cooked mode experiments.
#
sub RenewSlices()
{
    my $query_result =
	GeniDB::DBQueryWarn("select idx,UNIX_TIMESTAMP(expires), ".
			    "  from geni_slices ".
			    "where shutdown is null and exptidx is not null");

    while (my ($idx,$stamp) = $query_result->fetchrow_array()) {
	#
	# Wait until within $hours of expiration.
	#
	if ($stamp > time() + $grace) {
	    next;
	}
	my $slice = GeniSlice->Lookup($idx);

	if (!defined($slice)) {
	    # Slice is gone, lets not worry.
	    next;
	}
	if ($slice->Lock() != 0) {
	    print STDERR "Could not lock slice $slice.\n";
	    goto skip;
	}
	#
	# There should be an experiment.
	#
	my $experiment = $slice->GetExperiment();
	if (!defined($experiment)) {
	    print STDERR "No experiment for $slice.\n";
	    $slice->UnLock();
	    goto skip;
	}
	#
	# And we want to take the lock to prevent it from changing.
	#
	if ($experiment->LockTables()) {
	    print STDERR "Could not lock tables for $experiment\n";
	    $slice->UnLock();
	    goto skip;
	}
	if ($experiment->Lock(undef, 1)) {
	    print STDERR "Could not lock $experiment\n";
	    $slice->UnLock();
	    goto skip;
	}
	if ($impotent) {
	    print STDERR "Would renew $slice\n";
	    $experiment->Unlock();
	    $slice->UnLock();
	    goto skip;
	}
	
	if (libGeni::RenewSlivers($experiment)) {
	    print STDERR "Could not renew $slice/$experiment\n";

	    SENDMAIL($TBOPS,
		     "SA daemon renew failure",
		     "Could not renew $slice/$experiment\n",
		     $TBOPS);
	}
	$experiment->Unlock();
	$slice->UnLock();
	
      skip:
	$slice->Flush()
	    if (defined($slice));
    }
}

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

    WarnSlices();
    ExpireSlices();
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    RegisterSlices();
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#    RenewSlices();
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    # Be certain stale info is gone.
    GeniUtil::FlushCaches();

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    sleep(60);
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}
exit(0);

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

    #
    # Send a message to the testbed list. 
    #
    SENDMAIL($TBOPS,
	     "ProtoGENI SA daemon died",
	     $msg,
	     $TBOPS);

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