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<?php
/* Icinga Web 2 - EventDB | (c) 2017 Icinga Development Team | GPLv2+ */
namespace Icinga\Module\Eventdb\ProvidedHook\Monitoring;
use Icinga\Application\Config;
use Icinga\Application\Logger;
use Icinga\Authentication\Auth;
use Icinga\Data\Filter\Filter;
use Icinga\Data\Filter\FilterParseException;
use Icinga\Exception\InvalidPropertyException;
use Icinga\Module\Eventdb\Data\LegacyFilterParser;
use Icinga\Module\Monitoring\Object\Host;
use Icinga\Module\Monitoring\Object\MonitoredObject;
use Icinga\Module\Monitoring\Object\Service;
use Icinga\Web\Navigation\Navigation;
use Icinga\Web\Url;
use Icinga\Web\UrlParams;
class EventdbActionHook
{
protected static $wantCache = true;
protected static $cachedNav = array();
protected static $customFilters = array();
public static function wantCache($bool=true)
{
static::$wantCache = $bool;
}
/**
* @param MonitoredObject $object
* @param bool $no_cache
*
* @return null|Filter
*/
public static function getCustomFilter(MonitoredObject $object)
{
if (! Auth::getInstance()->hasPermission('eventdb/events')) {
return null;
}
$objectKey = static::getObjectKey($object);
// check cache if the filter already have been rendered
if (static::$wantCache && array_key_exists($objectKey, self::$customFilters)) {
return self::$customFilters[$objectKey];
}
$config = static::config();
$custom_var = $config->get('custom_var', null);
$service = null;
$edb_filter = null;
if ($custom_var !== null && $object instanceof Service) {
$edb_filter = $object->{'_service_' . $custom_var . '_filter'};
$service = $object->service_description;
} elseif ($custom_var !== null && $object instanceof Host) {
$edb_filter = $object->{'_host_' . $custom_var . '_filter'};
}
$customFilter = null;
if ($edb_filter !== null) {
if (LegacyFilterParser::isJsonFilter($edb_filter)) {
try {
$customFilter = LegacyFilterParser::parse(
$edb_filter,
$object->host_name,
$service
);
} catch (InvalidPropertyException $e) {
Logger::warning($e->getMessage());
}
} else {
try {
$customFilter = Filter::fromQueryString($edb_filter);
if (! in_array('host_name', $customFilter->listFilteredColumns())) {
$customFilter = $customFilter->andFilter(Filter::expression('host_name', '=', $object->host_name));
}
} catch (FilterParseException $e) {
Logger::warning('Could not parse custom EventDB filter: %s (%s)', $edb_filter, $e->getMessage());
}
}
}
return self::$customFilters[$objectKey] = $customFilter;
}
/**
* @param MonitoredObject $object Host or Service to render for
* @param bool $no_cache Only for testing - to avoid caching
*
* @return array|Navigation
*/
public static function getActions(MonitoredObject $object)
{
if (! Auth::getInstance()->hasPermission('eventdb/events')) {
return array();
}
$objectKey = static::getObjectKey($object);
// check cache if the buttons already have been rendered
if (static::$wantCache && array_key_exists($objectKey, self::$cachedNav)) {
return self::$cachedNav[$objectKey];
}
$nav = new Navigation();
$config = static::config();
$custom_var = $config->get('custom_var', null);
$edb_cv = null;
$always_on = null;
if ($custom_var !== null && $object instanceof Service) {
$edb_cv = $object->{'_service_' . $custom_var};
$always_on = $config->get('always_on_service', 0);
} elseif ($custom_var !== null && $object instanceof Host) {
$edb_cv = $object->{'_host_' . $custom_var};
$always_on = $config->get('always_on_host', 0);
}
$customFilter = static::getCustomFilter($object);
if ($customFilter !== null) {
$params = UrlParams::fromQueryString($customFilter->toQueryString());
$nav->addItem(
'events_filtered',
array(
'label' => mt('eventdb', 'Filtered events'),
'url' => Url::fromPath('eventdb/events')->setParams($params),
'icon' => 'tasks',
'class' => 'action-link',
'priority' => 1
)
);
}
// show access to all events, if (or)
// - custom_var is not configured
// - always_on is configured
// - custom_var is configured and set on object (to any value)
if ($custom_var === null || ! empty($edb_cv) || ! empty($always_on)) {
$nav->addItem(
'events',
array(
'label' => mt('eventdb', 'All events for host'),
'url' => Url::fromPath(
'eventdb/events',
array(
'host_name' => $object->host_name,
)
),
'icon' => 'tasks',
'class' => 'action-link',
'priority' => 99
)
);
}
return self::$cachedNav[$objectKey] = $nav;
}
protected static function getObjectKey(MonitoredObject $object)
{
$type = $object->getType();
$objectKey = sprintf('%!%', $type, $object->host_name);
if ($type === 'service') {
$objectKey .= '!' . $object->service_description;
}
return $objectKey;
}
protected static function config()
{
return Config::module('eventdb')->getSection('monitoring');
}
}
|
