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|
<?php
namespace Icinga\Module\Businessprocess\State;
use Exception;
use Icinga\Application\Benchmark;
use Icinga\Data\Filter\Filter;
use Icinga\Module\Businessprocess\BpConfig;
use Icinga\Module\Businessprocess\ServiceNode;
use Icinga\Module\Monitoring\Backend\MonitoringBackend;
class MonitoringState
{
/** @var BpConfig */
protected $config;
/** @var MonitoringBackend */
protected $backend;
private function __construct(BpConfig $config)
{
$this->config = $config;
$this->backend = $config->getBackend();
}
public static function apply(BpConfig $config)
{
$self = new static($config);
$self->retrieveStatesFromBackend();
return $config;
}
public function retrieveStatesFromBackend()
{
$config = $this->config;
try {
$this->reallyRetrieveStatesFromBackend();
} catch (Exception $e) {
$config->addError(
$config->translate('Could not retrieve process state: %s'),
$e->getMessage()
);
}
}
public function reallyRetrieveStatesFromBackend()
{
$config = $this->config;
Benchmark::measure('Retrieving states for business process ' . $config->getName());
$backend = $this->backend;
if ($config->usesHardStates()) {
$hostStateColumn = 'host_hard_state';
$hostStateChangeColumn = 'host_last_hard_state_change';
$serviceStateColumn = 'service_hard_state';
$serviceStateChangeColumn = 'service_last_hard_state_change';
} else {
$hostStateColumn = 'host_state';
$hostStateChangeColumn = 'host_last_state_change';
$serviceStateColumn = 'service_state';
$serviceStateChangeColumn = 'service_last_state_change';
}
$hosts = $config->listInvolvedHostNames();
if (empty($hosts)) {
return $this;
}
$hostFilter = Filter::expression('host_name', '=', $hosts);
$hostStatus = $backend->select()->from('hostStatus', array(
'hostname' => 'host_name',
'last_state_change' => $hostStateChangeColumn,
'in_downtime' => 'host_in_downtime',
'ack' => 'host_acknowledged',
'state' => $hostStateColumn,
'display_name' => 'host_display_name'
))->applyFilter($hostFilter)->getQuery()->fetchAll();
Benchmark::measure('Retrieved states for ' . count($hostStatus) . ' hosts in ' . $config->getName());
// NOTE: we intentionally filter by host_name ONLY
// Tests with host IN ... AND service IN shows longer query times
// while retrieving 1635 (in 5ms) vs. 1388 (in ~430ms) services
$serviceStatus = $backend->select()->from('serviceStatus', array(
'hostname' => 'host_name',
'service' => 'service_description',
'last_state_change' => $serviceStateChangeColumn,
'in_downtime' => 'service_in_downtime',
'ack' => 'service_acknowledged',
'state' => $serviceStateColumn,
'display_name' => 'service_display_name',
'host_display_name' => 'host_display_name'
))->applyFilter($hostFilter)->getQuery()->fetchAll();
Benchmark::measure('Retrieved states for ' . count($serviceStatus) . ' services in ' . $config->getName());
$configs = $config->listInvolvedConfigs();
foreach ($configs as $cfg) {
foreach ($serviceStatus as $row) {
$this->handleDbRow($row, $cfg);
}
foreach ($hostStatus as $row) {
$this->handleDbRow($row, $cfg);
}
}
// TODO: Union, single query?
Benchmark::measure('Got states for business process ' . $config->getName());
return $this;
}
protected function handleDbRow($row, BpConfig $config)
{
$key = BpConfig::joinNodeName(
$row->hostname,
property_exists($row, 'service')
? $row->service
: 'Hoststatus'
);
// We fetch more states than we need, so skip unknown ones
if (! $config->hasNode($key)) {
return;
}
$node = $config->getNode($key);
if ($row->state !== null) {
$node->setState($row->state)->setMissing(false);
}
if ($row->last_state_change !== null) {
$node->setLastStateChange($row->last_state_change);
}
if ((int) $row->in_downtime === 1) {
$node->setDowntime(true);
}
if ((int) $row->ack === 1) {
$node->setAck(true);
}
$node->setAlias($row->display_name);
if ($node instanceof ServiceNode) {
$node->setHostAlias($row->host_display_name);
}
}
}
|
