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fa8f834a89
git-svn-id: http://www.observium.org/svn/observer/trunk@2493 61d68cd4-352d-0410-923a-c4978735b2b8
89 lines
4.3 KiB
PHP
89 lines
4.3 KiB
PHP
<?php
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function poll_sensor($device, $class, $unit)
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{
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global $config;
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foreach (dbFetchRows("SELECT * FROM `sensors` WHERE `sensor_class` = ? AND `device_id` = ? AND `poller_type` = 'snmp'", array($class, $device['device_id'])) as $sensor)
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{
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echo("Checking $class " . $sensor['sensor_descr'] . "... ");
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if($class == "temperature")
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{
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for ($i = 0;$i < 5;$i++) # Try 5 times to get a valid temp reading
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{
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if ($debug) echo("Attempt $i ");
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$sensor_value = snmp_get($device, $sensor['sensor_oid'], "-OUqnv", "SNMPv2-MIB");
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$sensor_value = trim(str_replace("\"", "", $sensor_value));
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if ($sensor_value != 9999) break; # TME sometimes sends 999.9 when it is right in the middle of an update;
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sleep(1); # Give the TME some time to reset
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}
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} else {
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$sensor_value = snmp_get($device, $sensor['sensor_oid'], "-OUqnv", "SNMPv2-MIB");
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}
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if($sensor_value == -32768) { echo("Invalid (-32768) "); $sensor_value = 0; }
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if ($sensor['sensor_divisor']) { $sensor_value = $sensor_value / $sensor['sensor_divisor']; }
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if ($sensor['sensor_multiplier']) { $sensor_value = $sensor_value * $sensor['sensor_multiplier']; }
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$rrd_file = get_sensor_rrd($device, $sensor);
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#$rrd_file = $config['rrd_dir']."/".$device['hostname']."/".safename("sensor-".$sensor['sensor_class']."-".$sensor['sensor_type']."-".$sensor['sensor_index'] . ".rrd");
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## FIXME - sensor name format change 2011/04/26 - remove this in $amount_of_time.
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## We don't want to reduce performance forever because douchebags don't svn up!
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$old_rrd_file = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("$class-" . $sensor['sensor_descr'] . ".rrd");
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$old_rrd_file_b = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("$class-" . $sensor['sensor_index'] . ".rrd");
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if (is_file($old_rrd_file) && is_file($old_rrd_file_b))
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{
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rename($old_rrd_file, $rrd_file);
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unlink($old_rrd_file_b);
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} elseif (is_file($old_rrd_file)) {
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rename($old_rrd_file, $rrd_file);
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} elseif (is_file($old_rrd_file_b)) {
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rename($old_rrd_file_b, $rrd_file);
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}
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if (!is_file($rrd_file))
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{
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rrdtool_create($rrd_file,"--step 300 \
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DS:sensor:GAUGE:600:-20000:20000 \
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RRA:AVERAGE:0.5:1:1200 \
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RRA:AVERAGE:0.5:12:2400 \
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RRA:AVERAGE:0.5:288:1200 \
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RRA:MAX:0.5:12:2400 \
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RRA:MAX:0.5:288:1200 \
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RRA:MIN:0.5:12:2400 \
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RRA:MIN:0.5:288:1200");
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}
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echo("$sensor_value $unit\n");
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rrdtool_update($rrd_file,"N:$sensor_value");
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# FIXME also warn when crossing WARN level!!
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if ($sensor['sensor_limit_low'] != "" && $sensor['sensor_current'] > $sensor['sensor_limit_low'] && $sensor_value <= $sensor['sensor_limit_low'])
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{
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$msg = ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'] . " is under threshold: " . $sensor_value . "$unit (< " . $sensor['sensor_limit'];
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$msg .= "$unit) at " . date($config['timestamp_format']);
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notify($device, ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'], $msg);
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echo("Alerting for " . $device['hostname'] . " " . $sensor['sensor_descr'] . "\n");
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log_event(ucfirst($class) . ' ' . $sensor['sensor_descr'] . " under threshold: " . $sensor_value . " $unit (< " . $sensor['sensor_limit_low'] . " $unit)", $device, $class, $sensor['sensor_id']);
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}
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else if ($sensor['sensor_limit'] != "" && $sensor['sensor_current'] < $sensor['sensor_limit'] && $sensor_value >= $sensor['sensor_limit'])
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{
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$msg = ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'] . " is over threshold: " . $sensor_value . "$unit (> " . $sensor['sensor_limit'];
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$msg .= "$unit) at " . date($config['timestamp_format']);
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notify($device, ucfirst($class) . " Alarm: " . $device['hostname'] . " " . $sensor['sensor_descr'], $msg);
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echo("Alerting for " . $device['hostname'] . " " . $sensor['sensor_descr'] . "\n");
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log_event(ucfirst($class) . ' ' . $sensor['sensor_descr'] . " above threshold: " . $sensor_value . " $unit (> " . $sensor['sensor_limit'] . " $unit)", $device, $class, $sensor['sensor_id']);
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}
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dbUpdate(array('sensor_current' => $sensor_value), 'sensors', '`sensor_class` = ? AND `sensor_id` = ?', array($class, $sensor['sensor_id']));
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}
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}
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?>
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