1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
package Smokeping::probes::NFSping;
=head1 301 Moved Permanently
This is a Smokeping probe module. Please use the command
C<smokeping -man Smokeping::probes::NFSping>
to view the documentation or the command
C<smokeping -makepod Smokeping::probes::NFSping>
to generate the POD document.
=cut
use strict;
use base qw(Smokeping::probes::base);
use IPC::Open3;
use Symbol;
use Carp;
sub pod_hash {
return {
name => <<DOC,
Smokeping::probes::NFSping - NFSping Probe for SmokePing
DOC
description => <<DOC,
Integrates NFSping as a probe into smokeping. The variable B<binary> must
point to your copy of the NFSping program.
NFSping can be downloaded from:
L<https://github.com/mprovost/NFSping>
In B<blazemode>, NFSping sends one more ping than requested, and discards
the first RTT value returned as it's likely to be an outlier.
DOC
authors => <<'DOC',
Tobias Oetiker <tobi@oetiker.ch>
Matt Provost <mprovost@termcap.net>
DOC
}
}
sub new($$$)
{
my $proto = shift;
my $class = ref($proto) || $proto;
my $self = $class->SUPER::new(@_);
# no need for this if we run as a cgi
unless ( $ENV{SERVER_SOFTWARE} ) {
my $binary = join(" ", $self->binary);
my $testhost = $self->testhost;
my $return = `$binary -C 1 $testhost 2>&1`;
croak "ERROR: nfsping ('$binary -C 1 $testhost') could not be run: $return"
if $return =~ m/not found/;
if ($return =~ m/([0-9.]+)\sms\s+.*\n.*\n.*:\s+([0-9.]+)/ and $1 > 0){
$self->{pingfactor} = 1000 * $2/$1;
if ($1 != $2){
warn "### nfsping seems to report in ", $2/$1, " milliseconds (old version?)";
}
} else {
$self->{pingfactor} = 1000; # Gives us a good-guess default
warn "### assuming you are using an nfsping copy reporting in milliseconds\n";
}
};
return $self;
}
sub ProbeDesc{
return "NFSping";
}
# derived class (ie. RemoteNFSping) can override this
sub binary {
my $self = shift;
return $self->{properties}{binary};
}
# derived class (ie. NFSping6) can override this
sub testhost {
return "localhost";
}
sub ping ($){
my $self = shift;
# do NOT call superclass ... the ping method MUST be overwriten
# increment the internal 'rounds' counter
$self->increment_rounds_count;
my %upd;
my $inh = gensym;
my $outh = gensym;
my $errh = gensym;
# pinging nothing is pointless
return unless @{$self->addresses};
my @params = () ;
push @params, "-t" . int(1000 * $self->{properties}{timeout}) if $self->{properties}{timeout};
push @params, "-i" . int(1000 * $self->{properties}{mininterval});
push @params, "-p" . int(1000 * $self->{properties}{hostinterval}) if $self->{properties}{hostinterval};
my $pings = $self->pings;
if (($self->{properties}{blazemode} || '') eq 'true'){
$pings++;
}
my @cmd = (
$self->binary,
#'-C', $pings, '-q','-B1','-r1',
'-C', $pings, '-q',
@params,
@{$self->addresses});
$self->do_debug("Executing @cmd");
my $pid = open3($inh,$outh,$errh, @cmd);
$self->{rtts}={};
while (<$errh>){
chomp;
$self->do_debug("Got nfsping output: '$_'");
next unless /^\S+\s+:\s+[-\d\.]/; #filter out error messages from nfsping
my @times = split /\s+/;
my $ip = shift @times;
next unless ':' eq shift @times; #drop the colon
if (($self->{properties}{blazemode} || '') eq 'true'){
shift @times;
}
@times = map {sprintf "%.10e", $_ / $self->{pingfactor}} sort {$a <=> $b} grep /^\d/, @times;
map { $self->{rtts}{$_} = [@times] } @{$self->{addrlookup}{$ip}} ;
}
waitpid $pid,0;
close $inh;
close $outh;
close $errh;
}
sub probevars {
my $class = shift;
return $class->_makevars($class->SUPER::probevars, {
_mandatory => [ 'binary' ],
binary => {
_sub => sub {
my ($val) = @_;
return undef if $ENV{SERVER_SOFTWARE}; # don't check for nfsping presence in cgi mode
return "ERROR: NFSping 'binary' does not point to an executable"
unless -f $val and -x _;
return undef;
},
_doc => "The location of your nfsping binary.",
_example => '/usr/local/bin/nfsping',
},
blazemode => {
_re => '(true|false)',
_example => 'true',
_doc => "Send an extra ping and then discard the first answer since the first is bound to be an outlier.",
},
timeout => {
_re => '(\d*\.)?\d+',
_example => 1.5,
_doc => <<DOC,
The nfsping "-t" parameter, but in (possibly fractional) seconds rather than
milliseconds, for consistency with other Smokeping probes.
DOC
},
hostinterval => {
_re => '(\d*\.)?\d+',
_example => 1.5,
_doc => <<DOC,
The nfsping "-p" parameter, but in (possibly fractional) seconds rather than
milliseconds, for consistency with other Smokeping probes. This
parameter sets the time that nfsping waits between successive packets
to an individual target.
DOC
},
mininterval => {
_re => '(\d*\.)?\d+',
_example => .001,
_default => .01,
_doc => <<DOC,
The nfsping "-i" parameter, but in (probably fractional) seconds rather than
milliseconds, for consistency with other Smokeping probes. This is the
interval between pings to successive targets.
DOC
},
});
}
1;
|
