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Remove caching form the MonitoringBadgeNavigationItemRenderer

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Caching will be no longer necessary because we will replace the queries used to fetch the problem badges.
This commit is contained in:
Eric Lippmann 2017-07-27 11:29:57 +02:00
parent c0d359fbbd
commit 28790d254b
1 changed files with 12 additions and 44 deletions
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56
modules/monitoring/library/Monitoring/Web/Navigation/Renderer/MonitoringBadgeNavigationItemRenderer.php
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@ -11,14 +11,11 @@ use Icinga\Module\Monitoring\Backend\MonitoringBackend;
use Icinga\Web\Navigation\Renderer\BadgeNavigationItemRenderer; use Icinga\Web\Navigation\Renderer\BadgeNavigationItemRenderer;
/** /**
* Render generic dataView columns as badges in MenuItems * Render generic DataView columns as badges in menu items
*
* Renders numeric data view column values into menu item badges, fully configurable
* and with a caching mechanism to prevent needless requests to the same data view.
* *
* It is possible to configure the class of the rendered badge as option 'class', the * It is possible to configure the class of the rendered badge as option 'class', the
* column to fetch using the option 'column' and the dataView from which the columns * columns to fetch using the option 'columns' and the DataView from which the columns
* will be fetched using the option 'dataView'. * will be fetched using the option 'dataview'.
*/ */
class MonitoringBadgeNavigationItemRenderer extends BadgeNavigationItemRenderer class MonitoringBadgeNavigationItemRenderer extends BadgeNavigationItemRenderer
{ {
@ -104,29 +101,6 @@ class MonitoringBadgeNavigationItemRenderer extends BadgeNavigationItemRenderer
return $this->columns; return $this->columns;
} }
/**
* {@inheritdoc}
*/
public function init()
{
// clear the outdated summary cache, since new columns are being added. Optimally all menu item are constructed
// before any rendering is going on to avoid trashing too man old requests
if (isset(self::$summaries[$this->dataView])) {
unset(self::$summaries[$this->dataView]);
}
// add the new columns to this view
if (! isset(self::$dataViews[$this->dataView])) {
self::$dataViews[$this->dataView] = array();
}
foreach ($this->columns as $column => $title) {
if (! array_search($column, self::$dataViews[$this->dataView])) {
self::$dataViews[$this->dataView][] = $column;
}
}
}
/** /**
* Apply a restriction on the given data view * Apply a restriction on the given data view
* *
@ -146,24 +120,18 @@ class MonitoringBadgeNavigationItemRenderer extends BadgeNavigationItemRenderer
} }
/** /**
* Fetch the dataview from the database or access cache * Fetch the dataview from the database
*
* @param string $view
* *
* @return object * @return object
*/ */
protected static function summary($view) protected function fetchDataView()
{ {
if (! isset(self::$summaries[$view])) { $summary = MonitoringBackend::instance()->select()->from(
$summary = MonitoringBackend::instance()->select()->from( $this->getDataView(),
$view, array_keys($this->getColumns())
self::$dataViews[$view] );
); static::applyRestriction('monitoring/filter/objects', $summary);
static::applyRestriction('monitoring/filter/objects', $summary); return $summary->fetchRow();
self::$summaries[$view] = $summary->fetchRow();
}
return self::$summaries[$view];
} }
/** /**
@ -173,7 +141,7 @@ class MonitoringBadgeNavigationItemRenderer extends BadgeNavigationItemRenderer
{ {
if ($this->count === null) { if ($this->count === null) {
try { try {
$summary = self::summary($this->getDataView()); $summary = $this->fetchDataView();
} catch (Exception $_) { } catch (Exception $_) {
$this->count = 0; $this->count = 0;
} }