1 |
#!/usr/bin/perl -w |
2 |
|
3 |
# This program is free software; you can redistribute it and/or modify |
4 |
# it under the terms of the GNU General Public License as published by |
5 |
# the Free Software Foundation; either version 2 of the License, or |
6 |
# (at your option) any later version. |
7 |
# |
8 |
# This program is distributed in the hope that it will be useful, |
9 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 |
# GNU General Public License for more details. |
12 |
# |
13 |
# You should have received a copy of the GNU General Public License |
14 |
# along with this program; if not, write to the Free Software |
15 |
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
16 |
# |
17 |
|
18 |
use POSIX; |
19 |
use RRDs; |
20 |
use strict; |
21 |
|
22 |
# |
23 |
# Basic setup |
24 |
# |
25 |
|
26 |
my @ifaces = qw(wlan0 eth0 eth1); # wireless and other interface |
27 |
my $step = 10; # sec |
28 |
my $next1_factor = 60; # $step * $next1_factor = 10*60 = 600 sec = 10 min |
29 |
my $next2_factor = 360; # $step * $next2_factor = 10*360 = 3600 sec = 1 hour |
30 |
my $update_graph_period = 10; # How often will be graph updated (1..1000) |
31 |
|
32 |
# |
33 |
# Setup files locations |
34 |
# |
35 |
|
36 |
my $wifi_proc_file='/proc/net/wireless'; |
37 |
my $dev_proc_file='/proc/net/dev'; |
38 |
my ($pid_file,$base_dir); |
39 |
if ($0 =~ m#^(.*?)/(.+)\.pl$#i) { |
40 |
$base_dir = $1; |
41 |
$pid_file = "$base_dir/$2.pid"; |
42 |
} else { |
43 |
die "can't decode base dir and script name from '$0'"; |
44 |
} |
45 |
|
46 |
# |
47 |
# End setup |
48 |
# |
49 |
############################################################ |
50 |
|
51 |
my $start=time; |
52 |
my $syncrorun; |
53 |
my $switcher=$ARGV[0]; |
54 |
if (!($switcher)) { $switcher='undef'; } |
55 |
|
56 |
if ($switcher eq 'start') { |
57 |
&start(); |
58 |
} elsif ($switcher eq 'stop') { |
59 |
&stop(); |
60 |
} elsif ($switcher eq 'graph') { |
61 |
foreach (@ifaces) { |
62 |
&update_graph($_); |
63 |
} |
64 |
} elsif ($switcher eq 'install') { |
65 |
foreach (@ifaces) { |
66 |
&install($_); |
67 |
} |
68 |
} else { |
69 |
print qq(Usage: ./istatd.pl option |
70 |
option: start - Starting daemon |
71 |
stop - Stopping daemon |
72 |
graph - Get the latest graph |
73 |
install - Init database |
74 |
); |
75 |
} |
76 |
|
77 |
############################################################### |
78 |
sub install { |
79 |
my $iface = shift || die "need interface name!"; |
80 |
my $rrd = "$base_dir/$iface.rrd"; |
81 |
my $sec_in_the_day=86400; |
82 |
my $sec_in_the_week=$sec_in_the_day*7; |
83 |
my $sec_in_the_month=$sec_in_the_day*31; |
84 |
my $minvalue=0; |
85 |
my $maxvalue=255; |
86 |
my $xfiles_factor=0.5; |
87 |
my $max_interval=$step/$xfiles_factor; |
88 |
my $number_steps_day=floor($sec_in_the_day/$step); |
89 |
my $number_steps_week=floor($sec_in_the_week/($step*$next1_factor)); |
90 |
my $number_steps_month=floor($sec_in_the_month/($step*$next2_factor)); |
91 |
RRDs::create ($rrd, "--start",$start-1, "--step",$step, |
92 |
"DS:link:GAUGE:$max_interval:$minvalue:$maxvalue", |
93 |
"DS:level:GAUGE:$max_interval:$minvalue:$maxvalue", |
94 |
"DS:noise:GAUGE:$max_interval:$minvalue:$maxvalue", |
95 |
"DS:in:COUNTER:$max_interval:0:U", |
96 |
"DS:out:COUNTER:$max_interval:0:U", |
97 |
"RRA:AVERAGE:$xfiles_factor:1:$number_steps_day", |
98 |
"RRA:AVERAGE:$xfiles_factor:$next1_factor:$number_steps_week", |
99 |
"RRA:AVERAGE:$xfiles_factor:$next2_factor:$number_steps_month"); |
100 |
my $ERROR = RRDs::error; |
101 |
die "$0: unable to create `$rrd': $ERROR\n" if $ERROR; |
102 |
print "$iface done.\n"; |
103 |
} |
104 |
|
105 |
############################################################### |
106 |
sub start { |
107 |
my $pid=fork; |
108 |
exit if $pid; |
109 |
die "Could't fork: $!" unless defined($pid); |
110 |
POSIX::setsid() or die "Can't start a new session: $!"; |
111 |
$SIG{INT}=$SIG{TERM}=$SIG{HUP}=\&syncro_handler; |
112 |
$syncrorun=1; |
113 |
my $pid_id=$$; |
114 |
open(FILE, ">>$pid_file") || die "Cant write to $pid_file file: $!"; |
115 |
print FILE $pid_id; |
116 |
close(FILE); |
117 |
my $counter=0; |
118 |
while ($syncrorun) { |
119 |
$counter++; |
120 |
if (!( -e $pid_file)) { $syncrorun=0; } |
121 |
foreach (@ifaces) { |
122 |
&get_data($_); |
123 |
} |
124 |
if ($counter == $update_graph_period) { |
125 |
foreach (@ifaces) { |
126 |
&update_graph($_); |
127 |
} |
128 |
$counter=0; |
129 |
} |
130 |
sleep($step); |
131 |
} |
132 |
} |
133 |
|
134 |
############################################################## |
135 |
sub stop { |
136 |
my $pid=`cat $pid_file`; |
137 |
`kill $pid`; |
138 |
} |
139 |
|
140 |
############################################################## |
141 |
sub update_graph { |
142 |
my $iface = shift || die "need interface name!"; |
143 |
my $rrd = "$base_dir/$iface.rrd"; |
144 |
|
145 |
RRDs::graph "$iface-signal.png", |
146 |
"--title", " $iface signal statistics", |
147 |
"--start", "now-12h", |
148 |
"--end", "now", |
149 |
"--lower-limit=0", |
150 |
"--interlace", |
151 |
"--imgformat","PNG", |
152 |
"--width=450", |
153 |
"DEF:link=$rrd:link:AVERAGE", |
154 |
# "DEF:level=$rrd:level:AVERAGE", |
155 |
# "DEF:noise=$rrd:noise:AVERAGE", |
156 |
"AREA:link#00b6e4:link", |
157 |
# "LINE1:level#0022e9:level", |
158 |
# "LINE1:noise#cc0000:noise" |
159 |
; |
160 |
print "ERROR ".RRDs::error."\n" if (RRDs::error); |
161 |
|
162 |
RRDs::graph "$iface-transfer.png", |
163 |
"--title", " $iface transfer statistics", |
164 |
"--start", "now-12h", |
165 |
"--end", "now", |
166 |
"--lower-limit=0", |
167 |
"--interlace", |
168 |
"--imgformat","PNG", |
169 |
"--width=450", |
170 |
"DEF:in=$rrd:in:AVERAGE", |
171 |
"DEF:out=$rrd:out:AVERAGE", |
172 |
"AREA:in#00b6e4:in", |
173 |
"LINE1:out#0022e9:out", |
174 |
; |
175 |
print "ERROR ".RRDs::error."\n" if (RRDs::error); |
176 |
} |
177 |
|
178 |
############################################################### |
179 |
sub get_data { |
180 |
my $iface = shift || die "need interface name!"; |
181 |
my $rrd = "$base_dir/$iface.rrd"; |
182 |
|
183 |
my ($link,$level,$noise,$in,$out) = ("U","U","U","U","U"); |
184 |
|
185 |
open(FILE, "$wifi_proc_file") || die "Cant open $wifi_proc_file file: $!"; |
186 |
while (my $line=<FILE>) { |
187 |
($link,$level,$noise) = ($1,$2,$3) if ($line=~/\s*?$iface\:\s+?\d+?\s+?(\d+)\.*?\d*?\s+?(\d+)\.*?\d*?\s+?(\d+)\.*?\d*?.*/); |
188 |
} |
189 |
close(FILE); |
190 |
|
191 |
open(FILE, "$dev_proc_file") || die "Cant open $dev_proc_file file: $!"; |
192 |
while (my $line=<FILE>) { |
193 |
if ($line=~/\s*?$iface\:\s*?(\d+.*)$/) { |
194 |
my @v = split(/\s+/,$1,16); |
195 |
($in,$out) = ($v[0],$v[8]); |
196 |
} |
197 |
} |
198 |
close(FILE); |
199 |
RRDs::update ("$rrd", "--template", "link:level:noise:in:out", "N:$link:$level:$noise:$in:$out"); |
200 |
print "ERROR ".RRDs::error."\n" if (RRDs::error); |
201 |
} |
202 |
|
203 |
############################################################### |
204 |
sub syncro_handler { |
205 |
unlink($pid_file) || die "Cant unlink $pid_file file: $!"; |
206 |
$syncrorun=0; |
207 |
} |