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<?php
namespace Icinga\Module\Businessprocess\State;
use Exception;
use Icinga\Application\Benchmark;
use Icinga\Module\Businessprocess\BpConfig;
use Icinga\Module\Businessprocess\IcingaDbObject;
use Icinga\Module\Businessprocess\ServiceNode;
use Icinga\Module\Icingadb\Common\IcingaRedis;
use Icinga\Module\Icingadb\Model\Host;
use Icinga\Module\Icingadb\Model\Service;
use ipl\Sql\Connection as IcingaDbConnection;
use ipl\Stdlib\Filter;
class IcingaDbState
{
/** @var BpConfig */
protected $config;
/** @var IcingaDbConnection */
protected $backend;
public function __construct(BpConfig $config)
{
$this->config = $config;
$this->backend = IcingaDbObject::fetchDb();
}
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;
$involvedHostNames = $config->listInvolvedHostNames();
if (empty($involvedHostNames)) {
return $this;
}
Benchmark::measure(sprintf(
'Retrieving states for business process %s using Icinga DB backend',
$config->getName()
));
$hosts = Host::on($this->backend)->columns([
'id' => 'host.id',
'name' => 'host.name',
'display_name' => 'host.display_name',
'hard_state' => 'host.state.hard_state',
'soft_state' => 'host.state.soft_state',
'last_state_change' => 'host.state.last_state_change',
'in_downtime' => 'host.state.in_downtime',
'is_acknowledged' => 'host.state.is_acknowledged'
])->filter(Filter::equal('host.name', $involvedHostNames));
$services = Service::on($this->backend)->columns([
'id' => 'service.id',
'name' => 'service.name',
'display_name' => 'service.display_name',
'host_name' => 'host.name',
'host_display_name' => 'host.display_name',
'hard_state' => 'service.state.hard_state',
'soft_state' => 'service.state.soft_state',
'last_state_change' => 'service.state.last_state_change',
'in_downtime' => 'service.state.in_downtime',
'is_acknowledged' => 'service.state.is_acknowledged'
])->filter(Filter::equal('host.name', $involvedHostNames));
// All of this is ipl-sql now, for performance reasons
foreach ($config->listInvolvedConfigs() as $cfg) {
$serviceIds = [];
$serviceResults = [];
foreach ($this->backend->yieldAll($services->assembleSelect()) as $row) {
$row->hex_id = bin2hex(is_resource($row->id) ? stream_get_contents($row->id) : $row->id);
$serviceIds[] = $row->hex_id;
$serviceResults[] = $row;
}
$redisServiceResults = iterator_to_array(IcingaRedis::fetchServiceState($serviceIds, [
'hard_state',
'soft_state',
'last_state_change',
'in_downtime',
'is_acknowledged'
]));
foreach ($serviceResults as $row) {
if (isset($redisServiceResults[$row->hex_id])) {
$row = (object) array_merge(
(array) $row,
$redisServiceResults[$row->hex_id]
);
}
$this->handleDbRow($row, $cfg, 'service');
}
Benchmark::measure('Retrieved states for ' . count($serviceIds) . ' services in ' . $config->getName());
$hostIds = [];
$hostResults = [];
foreach ($this->backend->yieldAll($hosts->assembleSelect()) as $row) {
$row->hex_id = bin2hex(is_resource($row->id) ? stream_get_contents($row->id) : $row->id);
$hostIds[] = $row->hex_id;
$hostResults[] = $row;
}
$redisHostResults = iterator_to_array(IcingaRedis::fetchHostState($hostIds, [
'hard_state',
'soft_state',
'last_state_change',
'in_downtime',
'is_acknowledged'
]));
foreach ($hostResults as $row) {
if (isset($redisHostResults[$row->hex_id])) {
$row = (object) array_merge(
(array) $row,
$redisHostResults[$row->hex_id]
);
}
$this->handleDbRow($row, $cfg, 'host');
}
Benchmark::measure('Retrieved states for ' . count($hostIds) . ' hosts in ' . $config->getName());
}
Benchmark::measure('Got states for business process ' . $config->getName());
return $this;
}
protected function handleDbRow($row, BpConfig $config, $type)
{
if ($type === 'service') {
$key = BpConfig::joinNodeName($row->host_name, $row->name);
} else {
$key = BpConfig::joinNodeName($row->name, 'Hoststatus');
}
// We fetch more states than we need, so skip unknown ones
if (! $config->hasNode($key)) {
return;
}
$node = $config->getNode($key);
if ($this->config->usesHardStates()) {
if ($row->hard_state !== null) {
$node->setState($row->hard_state)->setMissing(false);
}
} else {
if ($row->soft_state !== null) {
$node->setState($row->soft_state)->setMissing(false);
}
}
if ($row->last_state_change !== null) {
$node->setLastStateChange($row->last_state_change / 1000.0);
}
$node->setDowntime($this->toBoolean($row->in_downtime));
$node->setAck($this->toBoolean($row->is_acknowledged));
$node->setAlias($row->display_name);
if ($node instanceof ServiceNode) {
$node->setHostAlias($row->host_display_name);
}
}
private function toBoolean($value): bool
{
switch (true) {
// Icinga Redis >= 6 (is_acknowledged, in_downtime)
case $value === true:
case $value === false:
return $value;
// Icinga Redis < 6 (is_acknowledged)
case $value === 1:
case $value === 2:
return true;
case $value === 0:
return false;
// Icinga DB < 1.4 (is_acknowledged)
case $value === 'sticky':
return true;
// Icinga DB >= * (is_acknowledged, in_downtime)
case $value === 'y':
return true;
case $value === 'n':
return false;
}
return false;
}
}
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