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<?php
namespace Icinga\Module\Graphite\Controllers;
use Icinga\Exception\Http\HttpBadRequestException;
use Icinga\Exception\Http\HttpNotFoundException;
use Icinga\Module\Graphite\Graphing\GraphingTrait;
use Icinga\Module\Graphite\Web\Controller\MonitoringAwareController;
use Icinga\Module\Graphite\Web\Widget\Graphs;
use Icinga\Module\Monitoring\Object\Host;
use Icinga\Module\Monitoring\Object\MonitoredObject;
use Icinga\Module\Monitoring\Object\Service;
use Icinga\Web\UrlParams;
class MonitoringGraphController extends MonitoringAwareController
{
use GraphingTrait;
/**
* The URL parameters for the graph
*
* @var string[]
*/
protected $graphParamsNames = [
'start', 'end',
'width', 'height',
'legend',
'template', 'default_template',
'bgcolor', 'fgcolor',
'majorGridLineColor', 'minorGridLineColor'
];
/**
* The URL parameters for metrics filtering
*
* @var UrlParams
*/
protected $filterParams;
/**
* The URL parameters for the graph
*
* @var string[]
*/
protected $graphParams = [];
public function init()
{
parent::init();
$this->filterParams = clone $this->getRequest()->getUrl()->getParams();
foreach ($this->graphParamsNames as $paramName) {
$this->graphParams[$paramName] = $this->filterParams->shift($paramName);
}
}
public function hostAction()
{
$hostName = $this->filterParams->getRequired('host.name');
$checkCommandColumn = '_host_' . Graphs::getObscuredCheckCommandCustomVar();
$host = $this->applyMonitoringRestriction(
$this->backend->select()->from('hoststatus', ['host_check_command', $checkCommandColumn])
)
->where('host_name', $hostName)
->limit(1) // just to be sure to save a few CPU cycles
->fetchRow();
if ($host === false) {
throw new HttpNotFoundException($this->translate('No such host'));
}
$this->supplyImage(new Host($this->backend, $hostName), $host->host_check_command, $host->$checkCommandColumn);
}
public function serviceAction()
{
$hostName = $this->filterParams->getRequired('host.name');
$serviceName = $this->filterParams->getRequired('service.name');
$checkCommandColumn = '_service_' . Graphs::getObscuredCheckCommandCustomVar();
$service = $this->applyMonitoringRestriction(
$this->backend->select()->from('servicestatus', ['service_check_command', $checkCommandColumn])
)
->where('host_name', $hostName)
->where('service_description', $serviceName)
->limit(1) // just to be sure to save a few CPU cycles
->fetchRow();
if ($service === false) {
throw new HttpNotFoundException($this->translate('No such service'));
}
$this->supplyImage(
new Service($this->backend, $hostName, $serviceName),
$service->service_check_command,
$service->$checkCommandColumn
);
}
/**
* Do all monitored object type independend actions
*
* @param MonitoredObject $object The object to render the graphs for
* @param string $checkCommand The check command of the object we supply an image for
* @param string|null $obscuredCheckCommand The "real" check command (if any) of the object we
* display graphs for
*/
protected function supplyImage($object, $checkCommand, $obscuredCheckCommand)
{
if (isset($this->graphParams['default_template'])) {
$urlParam = 'default_template';
$templates = $this->getAllTemplates()->getDefaultTemplates();
} else {
$urlParam = 'template';
$templates = $this->getAllTemplates()->getTemplates(
$obscuredCheckCommand === null ? $checkCommand : $obscuredCheckCommand
);
}
if (! isset($templates[$this->graphParams[$urlParam]])) {
throw new HttpNotFoundException($this->translate('No such template'));
}
$charts = $templates[$this->graphParams[$urlParam]]->getCharts(
static::getMetricsDataSource(),
$object,
array_map('rawurldecode', $this->filterParams->toArray(false))
);
switch (count($charts)) {
case 0:
throw new HttpNotFoundException($this->translate('No such graph'));
case 1:
$charts[0]
->setFrom($this->graphParams['start'])
->setUntil($this->graphParams['end'])
->setWidth((int) $this->graphParams['width'])
->setHeight((int) $this->graphParams['height'])
->setBackgroundColor($this->graphParams['bgcolor'])
->setForegroundColor($this->graphParams['fgcolor'])
->setMajorGridLineColor($this->graphParams['majorGridLineColor'])
->setMinorGridLineColor($this->graphParams['minorGridLineColor'])
->setShowLegend((bool) $this->graphParams['legend'])
->serveImage($this->getResponse());
// not falling through, serveImage exits
default:
throw new HttpBadRequestException($this->translate(
'Graphite Web yields more than one metric for the given filter.'
. ' Please specify a more precise filter.'
));
}
}
}
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