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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* Shows surrogate screen filled with graphs generated by selected graph prototype or preview of graph prototype.
*/
class CScreenLldGraph extends CScreenLldGraphBase {
/**
* @var array
*/
protected $createdGraphIds = [];
/**
* @var array
*/
protected $graphPrototype = null;
/**
* Returns screen items for surrogate screen.
*
* @return array
*/
protected function getSurrogateScreenItems() {
$createdGraphIds = $this->getCreatedGraphIds();
return $this->getGraphsForSurrogateScreen($createdGraphIds);
}
/**
* Retrieves graphs created for graph prototype given as resource for this screen item
* and returns array of the graph IDs.
*
* @return array
*/
protected function getCreatedGraphIds() {
if (!$this->createdGraphIds) {
$graphPrototype = $this->getGraphPrototype();
if ($graphPrototype) {
// Get all created (discovered) graphs for host of graph prototype.
$allCreatedGraphs = API::Graph()->get([
'output' => ['graphid', 'name'],
'hostids' => [$graphPrototype['discoveryRule']['hostid']],
'selectGraphDiscovery' => ['graphid', 'parent_graphid'],
'expandName' => true,
'filter' => ['flags' => ZBX_FLAG_DISCOVERY_CREATED],
]);
// Collect those graph IDs where parent graph is graph prototype selected for
// this screen item as resource.
foreach ($allCreatedGraphs as $graph) {
if ($graph['graphDiscovery']['parent_graphid'] == $graphPrototype['graphid']) {
$this->createdGraphIds[$graph['graphid']] = $graph['name'];
}
}
natsort($this->createdGraphIds);
$this->createdGraphIds = array_keys($this->createdGraphIds);
}
}
return $this->createdGraphIds;
}
/**
* Makes graph screen items from given graph IDs.
*
* @param array $graphIds
*
* @return array
*/
protected function getGraphsForSurrogateScreen(array $graphIds) {
$screenItemTemplate = $this->getScreenItemTemplate(SCREEN_RESOURCE_GRAPH);
$screenItems = [];
foreach ($graphIds as $graphId) {
$screenItem = $screenItemTemplate;
$screenItem['resourceid'] = $graphId;
$screenItem['screenitemid'] = $graphId;
$screenItems[] = $screenItem;
}
return $screenItems;
}
/**
* Resolves and retrieves effective graph prototype used in this screen item.
*
* @return array|bool
*/
protected function getGraphPrototype() {
if ($this->graphPrototype === null) {
$resourceid = array_key_exists('real_resourceid', $this->screenitem)
? $this->screenitem['real_resourceid']
: $this->screenitem['resourceid'];
$options = [
'output' => ['graphid', 'name', 'graphtype', 'show_legend', 'show_3d', 'templated'],
'selectDiscoveryRule' => ['hostid']
];
/*
* If screen item is dynamic or is templated screen, real graph prototype is looked up by "name"
* used as resource ID for this screen item and by current host.
*/
if ($this->screenitem['dynamic'] == SCREEN_DYNAMIC_ITEM && $this->hostid) {
$currentGraphPrototype = API::GraphPrototype()->get([
'output' => ['name'],
'graphids' => [$resourceid]
]);
$currentGraphPrototype = reset($currentGraphPrototype);
$options['hostids'] = [$this->hostid];
$options['filter'] = ['name' => $currentGraphPrototype['name']];
}
// otherwise just use resource ID given to this screen item.
else {
$options['graphids'] = [$resourceid];
}
$selectedGraphPrototype = API::GraphPrototype()->get($options);
$this->graphPrototype = reset($selectedGraphPrototype);
}
return $this->graphPrototype;
}
/**
* Returns output for preview of graph prototype.
*
* @return CTag
*/
protected function getPreviewOutput() {
$graphPrototype = $this->getGraphPrototype();
switch ($graphPrototype['graphtype']) {
case GRAPH_TYPE_NORMAL:
case GRAPH_TYPE_STACKED:
$url = 'chart3.php';
break;
case GRAPH_TYPE_EXPLODED:
case GRAPH_TYPE_3D_EXPLODED:
case GRAPH_TYPE_3D:
case GRAPH_TYPE_PIE:
$url = 'chart7.php';
break;
default:
show_error_message(_('Graph prototype not found.'));
exit;
}
$graphPrototypeItems = API::GraphItem()->get([
'output' => [
'gitemid', 'itemid', 'sortorder', 'flags', 'type', 'calc_fnc', 'drawtype', 'yaxisside', 'color'
],
'graphids' => [$graphPrototype['graphid']]
]);
$queryParams = [
'items' => $graphPrototypeItems,
'graphtype' => $graphPrototype['graphtype'],
'period' => 3600,
'legend' => $graphPrototype['show_legend'],
'graph3d' => $graphPrototype['show_3d'],
'width' => $this->screenitem['width'],
'height' => $this->screenitem['height'],
'name' => $graphPrototype['name']
];
$url .= '?'.http_build_query($queryParams);
return new CSpan(new CImg($url));
}
}
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