root/resmon

Revision eb13d729653537edd09653c474ba43993b785073, 2.5 kB (checked in by Theo Schlossnagle <jesus@omniti.com>, 8 years ago)

$monobj could really be hosed, so we need to be careful with invoking methods on it (so we do not completely die)

git-svn-id: https://labs.omniti.com/resmon/trunk@38 8c0face9-b7db-6ec6-c4b3-d5f7145c7d55

  • Property mode set to 100755
Line 
1 #!/usr/bin/perl
2
3 BEGIN {
4   (my $dir = $0) =~ s/\/?[^\/]+$//;
5   eval "use lib '$dir/lib';";
6   die $@ if($@);
7 };
8
9 use strict;
10 use Time::HiRes qw( gettimeofday tv_interval sleep );
11 use POSIX qw( setsid );
12 use Getopt::Long;
13 use Data::Dumper;
14 use vars qw($config_file $debug $status_file $interface $port $config);
15
16 use Resmon::Config;
17 use Resmon::ExtComm;
18 use Resmon::Status;
19 use Resmon::Module;
20
21 GetOptions(
22   "i=s" => \$interface,
23   "p=i" => \$port,
24   "c=s" => \$config_file,
25   "d"   => \$debug,
26   "f=s" => \$status_file,
27 );
28
29 $config_file ||= "$0.conf";
30 die "Cannot open configuration file: $config_file" unless (-r $config_file);
31
32 sub configure {
33   $config = Resmon::Config->new($config_file);
34   $config->{statusfile} = $status_file if($status_file);
35   $config->{port} = $port if($port);
36   $config->{interface} = $interface if($interface);
37 }
38
39 $SIG{'HUP'} = \&configure;
40 configure();
41
42 my $sigint = 0;
43 sub sigint_handler { $sigint = 1; }
44 $SIG{'INT'} = \&sigint_handler;
45
46 my $rmlast = undef;
47 sub wait_interval {
48   $rmlast = [gettimeofday] unless defined($rmlast);
49   my $elapsed = $config->{interval} - tv_interval($rmlast);
50   if($elapsed > 0) {
51     sleep($elapsed);
52   }
53   $rmlast = [gettimeofday];
54 }
55
56 unless($debug) {
57   fork && exit;
58   setsid;
59   close(STDIN);
60   close(STDOUT);
61   close(STDERR);
62   fork && exit;
63 }
64
65 my $list = [];
66 my $status = Resmon::Status->new($config->{statusfile});
67 $status->open();
68 $status->serve_http_on($config->{interface}, $config->{port})
69   if($config->{port});
70
71 while(1) {
72   while(my($module_name, $mod_configs) = each %{$config->{Module}}) {
73     my $coderef = undef;
74     eval { $coderef = Resmon::Module::fetch_monitor($module_name); };
75     foreach my $monobj (@$mod_configs) {
76       my $check_rv = 'BAD',
77       my $check_mess = 'no data';
78       my $starttime = [gettimeofday];
79       if($coderef) {
80         eval { ($check_rv, $check_mess) = $coderef->($monobj); };
81       } else {
82         eval { ($check_rv, $check_mess) = $monobj->handler(); };
83       }
84       my $results = {
85         configuration => eval { $monobj->config_as_hash(); },
86         last_runtime_seconds => tv_interval($starttime),
87       };
88       if($@) {
89         $results->{state} = 'BAD';
90         $results->{message} = $@;
91       } else {
92         $results->{state} = $check_rv;
93         $results->{message} = $check_mess;
94       }
95       $status->store($module_name,$monobj->{'object'}, $results);
96     }
97   }
98   $status->close();
99   die "Exiting.\n" if($sigint);
100   wait_interval();
101   die "Exiting.\n" if($sigint);
102   print "\n---- ".localtime(time)."----------\n"
103    unless $status->open();
104 }
105
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