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<?php
namespace Icinga\Module\Graphite\Web\Controller;
use ArrayIterator;
use Icinga\Application\Modules\Module;
use Icinga\Data\Filter\Filter;
use Icinga\Data\Filterable;
use Icinga\Exception\ConfigurationError;
use Icinga\Exception\QueryException;
use Icinga\Module\Graphite\ProvidedHook\Icingadb\IcingadbSupport;
use Icinga\Module\Monitoring\Backend\MonitoringBackend;
use Icinga\Module\Monitoring\Data\CustomvarProtectionIterator;
use Icinga\Module\Monitoring\DataView\DataView;
use Icinga\Util\Json;
use Icinga\File\Csv;
use Icinga\Web\Controller;
use Icinga\Web\Url;
abstract class MonitoringAwareController extends Controller
{
/** @var bool Whether to use icingadb as the backend */
protected $useIcingadbAsBackend = false;
/** @var MonitoringBackend */
protected $backend;
/**
* Restrict the given monitored object query for the currently authenticated user
*
* @param DataView $dataView
*
* @return DataView The given data view
*/
protected function applyMonitoringRestriction(DataView $dataView)
{
$this->applyRestriction('monitoring/filter/objects', $dataView);
return $dataView;
}
protected function moduleInit()
{
if (Module::exists('icingadb') && IcingadbSupport::useIcingaDbAsBackend()) {
$this->useIcingadbAsBackend = true;
return;
}
$this->backend = MonitoringBackend::instance($this->_getParam('backend'));
$this->view->url = Url::fromRequest();
}
protected function handleFormatRequest($query)
{
$desiredContentType = $this->getRequest()->getHeader('Accept');
if ($desiredContentType === 'application/json') {
$desiredFormat = 'json';
} elseif ($desiredContentType === 'text/csv') {
$desiredFormat = 'csv';
} else {
$desiredFormat = strtolower($this->params->get('format', 'html'));
}
if ($desiredFormat !== 'html' && ! $this->params->has('limit')) {
$query->limit(); // Resets any default limit and offset
}
switch ($desiredFormat) {
case 'sql':
echo '<pre>'
. htmlspecialchars(wordwrap($query->dump()))
. '</pre>';
exit;
case 'json':
$response = $this->getResponse();
$response
->setHeader('Content-Type', 'application/json')
->setHeader('Cache-Control', 'no-store')
->setHeader(
'Content-Disposition',
'inline; filename=' . $this->getRequest()->getActionName() . '.json'
)
->appendBody(
Json::sanitize(
iterator_to_array(
new CustomvarProtectionIterator(
new ArrayIterator($query->fetchAll())
)
)
)
)
->sendResponse();
exit;
case 'csv':
$response = $this->getResponse();
$response
->setHeader('Content-Type', 'text/csv')
->setHeader('Cache-Control', 'no-store')
->setHeader(
'Content-Disposition',
'attachment; filename=' . $this->getRequest()->getActionName() . '.csv'
)
->appendBody((string) Csv::fromQuery(new CustomvarProtectionIterator($query)))
->sendResponse();
exit;
}
}
/**
* Apply a restriction of the authenticated on the given filterable
*
* @param string $name Name of the restriction
* @param Filterable $filterable Filterable to restrict
*
* @return Filterable The filterable having the restriction applied
*/
protected function applyRestriction($name, Filterable $filterable)
{
$filterable->applyFilter($this->getRestriction($name));
return $filterable;
}
/**
* Get a restriction of the authenticated
*
* @param string $name Name of the restriction
*
* @return Filter Filter object
* @throws ConfigurationError If the restriction contains invalid filter columns
*/
protected function getRestriction($name)
{
$restriction = Filter::matchAny();
$restriction->setAllowedFilterColumns(array(
'host_name',
'hostgroup_name',
'instance_name',
'service_description',
'servicegroup_name',
function ($c) {
return preg_match('/^_(?:host|service)_/i', $c);
}
));
foreach ($this->getRestrictions($name) as $filter) {
if ($filter === '*') {
return Filter::matchAll();
}
try {
$restriction->addFilter(Filter::fromQueryString($filter));
} catch (QueryException $e) {
throw new ConfigurationError(
$this->translate(
'Cannot apply restriction %s using the filter %s. You can only use the following columns: %s'
),
$name,
$filter,
implode(', ', array(
'instance_name',
'host_name',
'hostgroup_name',
'service_description',
'servicegroup_name',
'_(host|service)_<customvar-name>'
)),
$e
);
}
}
if ($restriction->isEmpty()) {
return Filter::matchAll();
}
return $restriction;
}
}
|
