more temperature sensors
[upsgraph] / upsgraph.pl
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1#!/usr/bin/perl -w
2
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3if ((@ARGV != 1) && (@ARGV != 2)) {
4 print STDERR "Syntax: ${0} configfile [uid]\n";
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5 exit(1);
6}
7
1c9fb9df 8use Net::SNMP;
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9use RRDs;
10use Data::Dumper;
e18c93b3 11
1c9fb9df 12$UPSGRAPH::outdir = "";
1c9fb9df 13$UPSGRAPH::step = 60;
e5da3876 14$UPSGRAPH::keep = (370*24*60*60)/$UPSGRAPH::step;
6c1071ee 15$UPSGRAPH::hosts = ();
e18c93b3 16
1c9fb9df 17do $ARGV[0] or die "can't read config: $!";
e18c93b3 18
1c9fb9df 19my $outdir = $UPSGRAPH::outdir;
1c9fb9df 20my $step = $UPSGRAPH::step;
e5da3876 21my $keep = $UPSGRAPH::keep;
6c1071ee 22my $hosts = $UPSGRAPH::hosts;
e18c93b3 23
e5da3876 24sub rrdcreate(@) {
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25 my $newrrd = shift;
26 my $field = shift;
6c1071ee 27 my $vars = shift;
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28 my $start = shift;
29
21377f43 30 my @cmd = ("${newrrd}", "--step=${step}");
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31
32 if (defined($start)) {
33 push @cmd, "--start=${start}";
34 }
35
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36 push @cmd, "DS:${field}:GAUGE:600:" .
37 $vars->{$field}->{'min'} . ":" .
38 $vars->{$field}->{'max'} . " ";
39
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40 push @cmd, "RRA:AVERAGE:0.5:1:${keep}";
41
42 RRDs::create(@cmd);
43 if (RRDs::error) {
44 print "Error while creating: " . RRDs::error . "\n";
45 exit 1;
46 }
47}
48
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49sub fetch_snmp(@) {
50 my $address = shift;
51 my $community = shift;
52 my $oid = shift;
e5da3876 53
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54 (my $session, my $error) = Net::SNMP->session(Hostname => $address,
55 Community => $community);
e18c93b3 56
6c1071ee 57 die "session error: $error" unless ($session);
e5da3876 58
6c1071ee 59 $session->translate(0);
e5da3876 60
6c1071ee 61 my $val = $session->get_request($oid);
e5da3876 62
6c1071ee 63 $session->close;
21377f43 64
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65 $val;
66}
e5da3876 67
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68if ($> == 0) {
69 if (@ARGV != 2) {
70 print STDERR "Running as root, please provide UID as 2th argument!\n";
71 exit(1);
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72 }
73
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74 print "Running as root, switching to ".$ARGV[1]."\n";
75 $< = $> = $ARGV[1];
21377f43 76}
e5da3876 77
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78foreach my $host (@$hosts) {
79 my $rrdfile = $host->{'rrdfile'};
21377f43 80
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81 if (-e "${rrdfile}") {
82 print "Reading old ${rrdfile} to preserve data...\n";
e5da3876 83
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84 my $rrdinfo = RRDs::info("${rrdfile}");
85 if (RRDs::error) {
86 print "Error while getting info: " . RRDs::error . "\n";
87 exit 1;
88 }
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89
90 (my $start, my $ostep, my $names, my $data) =
6c1071ee 91 RRDs::fetch("${rrdfile}",
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92 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
93 "AVERAGE");
94
95 if (RRDs::error) {
96 print "Error while fetching data: " . RRDs::error . "\n";
97 exit 1;
98 }
99
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100 foreach my $field (@$names) {
101 if (! -e "${rrdfile}.${field}") {
102 rrdcreate("${rrdfile}.${field}",
103 "${field}",
104 $host->{'vars'},
105 (${start}-${ostep}));
106 }
107 }
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108
109 my $pos = $start;
110 foreach my $line (@$data) {
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111 foreach my $field (@$names) {
112 my $val = shift (@$line);
21377f43 113 $val = 'U' if (!defined($val));
21377f43 114
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115 RRDs::update("${rrdfile}.${field}", "${pos}:${val}");
116 if (RRDs::error) {
117 print "Can't insert data: " . RRDs::error . "\n";
118 exit 1;
119 }
120
21377f43 121 }
6c1071ee 122
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123 $pos += $ostep;
124
125 if ((($pos-$start)/$ostep) == $#$data) {
126 last;
127 }
128 }
129
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130 rename("${rrdfile}", "${rrdfile}.old") or die "Can't rename old file: $!\n";
131 }
21377f43 132
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133 foreach my $field (@{$host->{'fields'}}) {
134 if (! -e "${rrdfile}.${field}") {
135 print "Creating ${rrdfile}.${field}...\n";
136 rrdcreate("${rrdfile}.${field}",
137 "${field}",
138 $host->{'vars'});
139 }
140
141 my $rrdinfo = RRDs::info("${rrdfile}.${field}");
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142 if (RRDs::error) {
143 print "Error while getting info: " . RRDs::error . "\n";
144 exit 1;
145 }
146
147 if ($rrdinfo->{'rra[0].rows'} != $keep) {
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148 print "Resizing ${rrdfile}.${field} from " . $rrdinfo->{'rra[0].rows'} .
149 " to ${keep} samples.\n";
e18c93b3 150
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151 (my $start, my $ostep, my $names, my $data) =
152 RRDs::fetch("${rrdfile}.${field}",
153 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
154 "AVERAGE");
6aa53fc5 155
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156 if (RRDs::error) {
157 print "Error while fetching data: " . RRDs::error . "\n";
158 exit 1;
159 }
6aa53fc5 160
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161 rrdcreate("${rrdfile}.${field}.new",
162 "${field}",
163 $host->{'vars'},
164 (${start}-${ostep}));
6aa53fc5 165
6c1071ee 166 print "Preserving data since " . localtime($start) . "\n";
e18c93b3 167
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168 my $pos = $start;
169 foreach my $line (@$data) {
170 my $vline = "${pos}";
e18c93b3 171
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172 foreach my $val (@$line) {
173 $val = 'U' if (!defined($val));
174 $vline .= ":${val}";
175 }
176 RRDs::update("${rrdfile}.${field}.new", $vline) or die "Can't insert data\n";
e18c93b3 177
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178 if (RRDs::error) {
179 print "Error while updating: " . RRDs::error . "\n";
180 exit 1;
181 }
182 $pos += $ostep;
e18c93b3 183
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184 if ((($pos-$start)/$ostep) == $#$data) {
185 last;
186 }
187 }
e18c93b3 188
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189 rename("${rrdfile}.${field}", "${rrdfile}.${field}.old") or die "Can't rename old file: $!\n";
190 rename("${rrdfile}.${field}.new", "${rrdfile}.${field}") or die "Can't rename new file: $!\n";
e18c93b3 191
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192 $rrdinfo = RRDs::info("${rrdfile}.${field}");
193 if (RRDs::error) {
194 print "Error while getting info: " . RRDs::error . "\n";
195 exit 1;
196 }
e18c93b3 197
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198 if ($rrdinfo->{'rra[0].rows'} != $keep) {
199 print "Failed!\n";
200 exit 1;
201 }
e18c93b3 202 }
e18c93b3 203 }
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204}
205
206my $child = fork();
e18c93b3 207
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208die "fork failed!" if (!defined($child));
209
210exit 0 if ($child != 0);
211
212while(1) {
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213 open(HTML, ">${outdir}/index.html.new");
214
215 print HTML '<html><head><meta http-equiv="refresh" content="60"/><meta http-equiv="cache-control" content="no-cache"/><meta http-equiv="pragma" content="no-cache"/><meta http_equiv="expires" content="Sat, 26 Jul 1997 05:00:00 GMT"/><title>USV status</title></head>';
216 print HTML '<body bgcolor="#ffffff">';
217
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218 foreach my $host (@$hosts) {
219 my $vars = $host->{'vars'};
220 my $rrdfile = $host->{'rrdfile'};
221 my $hostname = $host->{'name'};
222
223 foreach my $var (@{$host->{'fields'}}) {
224 delete $vars->{$var}->{'value'};
e5da3876 225
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226 my $result = fetch_snmp($host->{'address'}, $host->{'community'}, $vars->{$var}->{'oid'});
227 next unless (defined $result);
228
229 $vars->{$var}->{'value'} = $result->{$vars->{$var}->{'oid'}};
230 if (defined($vars->{$var}->{'factor'})) {
231 $vars->{$var}->{'value'} *= $vars->{$var}->{'factor'};
232 }
233 }
234
235 foreach my $var (@{$host->{'fields'}}) {
236 if (!(defined($vars->{$var}->{'value'}))) {
237 $vars->{$var}->{'value'} = 'U';
238 }
239 RRDs::update("${rrdfile}.${var}", "N:" . $vars->{$var}->{'value'});
240 }
e5da3876 241 if (RRDs::error) {
6c1071ee 242 print "Error while updating: " . RRDs::error . "\n";
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243 }
244
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245 foreach my $var (@{$host->{'fields'}}) {
246 my @graphdef = ("-t", $hostname." - ".$vars->{$var}->{'name'}, "DEF:${var}=${rrdfile}.${var}:${var}:AVERAGE", "LINE1:${var}#FF0000");
247 (my $averages, my $width, my $height) =
248 RRDs::graph("${outdir}/${hostname}.${var}.png.new",
249 "-w", "720", @graphdef);
e5da3876 250
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251 if (RRDs::error) {
252 print "Error while graphing: " . RRDs::error . "\n";
253 } else {
254 rename("${outdir}/${hostname}.${var}.png.new", "${outdir}/${hostname}.${var}.png");
255 }
e5da3876 256
6c1071ee 257 print HTML "<a href=\"${hostname}.${var}.html\"><img src=\"${hostname}.${var}.png\" width=\"${width}\" height=\"${height}\" border=\"0\"></a>";
58c56c83 258
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259 open (HTML2, ">${outdir}/${hostname}.${var}.html.new");
260 print HTML2 "<html><head><title>" . $vars->{$var}->{'name'} . "</title></head>";
261 print HTML2 '<body bgcolor="#ffffff">';
58c56c83 262
58c56c83 263
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264 push @graphdef, "VDEF:min=${var},MINIMUM";
265 push @graphdef, "GPRINT:min:Minimum\\: %.2lf";
58c56c83 266
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267 push @graphdef, "VDEF:avg=${var},AVERAGE";
268 push @graphdef, "GPRINT:avg:Average\\: %.2lf";
58c56c83 269
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270 push @graphdef, "VDEF:max=${var},MAXIMUM";
271 push @graphdef, "GPRINT:max:Maximum\\: %.2lf";
e5da3876 272
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273 push @graphdef, "VDEF:cur=${var},LAST";
274 push @graphdef, "GPRINT:cur:Current\\: %.2lf";
e5da3876 275
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276 ($averages, $width, $height) =
277 RRDs::graph("${outdir}/${hostname}.${var}.long.png.new",
278 "-w", "1008", @graphdef);
e5da3876 279
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280 if (RRDs::error) {
281 print "Error while graphing: " . RRDs::error . "\n";
282 } else {
283 rename("${outdir}/${hostname}.${var}.long.png.new", "${outdir}/${hostname}.${var}.long.png");
284 }
e5da3876 285
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286 print HTML2 "<img src=\"${hostname}.${var}.long.png\" width=\"${width}\" height=\"${height}\"><br>";
287
288 ($averages, $width, $height) =
289 RRDs::graph("${outdir}/${hostname}.${var}.week.png.new",
290 "-w", "1008", "-e", "now", "-s", "end-1w", @graphdef);
291
292 if (RRDs::error) {
293 print "Error while graphing: " . RRDs::error . "\n";
294 } else {
295 rename("${outdir}/${hostname}.${var}.week.png.new", "${outdir}/${hostname}.${var}.week.png");
296 }
e5da3876 297
6c1071ee 298 print HTML2 "<img src=\"${hostname}.${var}.week.png\" width=\"${width}\" height=\"${height}\"><br>";
e5da3876 299
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300 ($averages, $width, $height) =
301 RRDs::graph("${outdir}/${hostname}.${var}.year.png.new",
302 "-w", "1008", "-e", "now", "-s", "end-1y", @graphdef);
e5da3876 303
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304 if (RRDs::error) {
305 print "Error while graphing: " . RRDs::error . "\n";
306 } else {
307 rename("${outdir}/${hostname}.${var}.year.png.new", "${outdir}/${hostname}.${var}.year.png");
308 }
e18c93b3 309
6c1071ee 310 print HTML2 "<img src=\"${hostname}.${var}.year.png\" width=\"${width}\" height=\"${height}\"><br>";
e18c93b3 311
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312 print HTML2 "</body></html>\n";
313 close(HTML2);
314 rename("${outdir}/${hostname}.${var}.html.new", "${outdir}/${hostname}.${var}.html");
315 }
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316 }
317
318 print HTML "</body></html>\n";
319 print HTML "<br>Generated on: " . localtime(time());
863e62dc 320 print HTML ' by <a href="http://git.zerfleddert.de/cgi-bin/gitweb.cgi/upsgraph">upsgraph</a>.';
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321
322 close(HTML);
323
324 rename("${outdir}/index.html.new", "${outdir}/index.html");
325
326 sleep(${step}/2);
327}
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