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#!/usr/bin/perl -wT
#
# EMULAB-COPYRIGHT
# Copyright (c) 2000-2002, 2005, 2006 University of Utah and the Flux Group.
# All rights reserved.
#
use English;
use Getopt::Std;
use Fcntl;
use IO::Handle;
use strict;
#
# Spew event stream for an experiment.
#
sub usage()
{
print STDOUT "Usage: spewevents <pid> <eid>\n";
exit(-1);
}
my $optlist = "w";
my $fromweb = 0;
#
# Configure variables
#
my $TB = "@prefix@";
my $TBOPS = "@TBOPSEMAIL@";
my $TBLOGS = "@TBLOGSEMAIL@";
#
# Load the Testbed support stuff.
#
use lib "@prefix@/lib";
use libdb;
use libtestbed;
use event;
# un-taint path
$ENV{'PATH'} = '/bin:/usr/bin:/usr/local/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
# Turn off line buffering on output
$| = 1;
# Protos
sub callbackFunc($$$);
#
# Parse command arguments. Once we return from getopts, all that should be
# left are the required arguments.
#
my %options = ();
if (! getopts($optlist, \%options)) {
usage();
}
if (defined($options{"w"})) {
$fromweb = 1;
}
if (@ARGV != 2) {
usage();
}
my $pid = $ARGV[0];
my $eid = $ARGV[1];
#
# Untaint the arguments.
#
if ($pid =~ /^([-\@\w]+)$/) {
$pid = $1;
}
else {
die("*** Bad data in pid: $pid\n");
}
if ($eid =~ /^([-\@\w]+)$/) {
$eid = $1;
}
else {
die("*** Bad data in eid: $eid\n");
}
#
# Verify that this person is allowed to do this.
#
if (!TBExptAccessCheck($UID, $pid, $eid, TB_EXPT_READINFO)) {
die("*** $0:\n".
" You do not have permission to view events for $pid/$eid!\n");
}
# Obvious.
STDOUT->autoflush(1);
if (! EventRegister()) {
die("*** $0:\n".
" Unable to register with event system\n");
}
my $handle = $event::EventSendHandle;
my $tuple = address_tuple_alloc();
if (! $tuple) {
die("*** $0:\n".
" Could not allocate an address tuple\n");
}
# All events for this experiment, sans scheduler events.
%$tuple = (expt => "$pid/$eid");
if (!event_subscribe($handle, \&callbackFunc, $tuple)) {
die("*** $0:\n".
" Could not subscribe to event\n");
}
#
# Icky. Send out some stuff at the beginning to make the browser do
# something. This terrible, but not sure what else to do.
#
if ($fromweb) {
for (my $i = 0; $i <= 1024; $i++) {
print " ";
}
print "\n";
}
#
# Loop.
#
my $lastevent_time = time();
while (1) {
# Quit when the experiment is no longer active.
last
if (ExpState($pid, $eid) ne EXPTSTATE_ACTIVE());
# Quit if no events for a long time.
if (time() - $lastevent_time > 900) {
syswrite(STDOUT, "No events for a long time; stopping ...\n");
last;
}
event_poll_blocking($handle, 2000);
}
exit(0);
sub callbackFunc($$$) {
my ($handle, $notification, $data) = @_;
my $time = time();
my $site = event_notification_get_site($handle, $notification);
my $expt = event_notification_get_expt($handle, $notification);
my $group = event_notification_get_group($handle, $notification);
my $host = event_notification_get_host($handle, $notification);
my $objtype = event_notification_get_objtype($handle, $notification);
my $objname = event_notification_get_objname($handle, $notification);
my $eventtype = event_notification_get_eventtype($handle, $notification);
my $arguments = event_notification_get_arguments($handle, $notification);
my $string =
sprintf("%-12s %-10s %-15s %-12s %-15s %-15s",
"$time", "$group", "$host", "$objtype",
"$objname", "$eventtype");
if (defined($arguments)) {
# Trim extra whitespace.
$arguments =~ s/^\s+//;
$arguments =~ s/\s+$//;
$string .= " $arguments";
}
my $rval = syswrite(STDOUT, $string);
# If the web page stops this is only way to catch it and exit.
# Hence, the use of syswrite so we can get status back.
exit(0)
if (!defined($rval));
$lastevent_time = time();