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|
<?php
namespace Icinga\Module\Graphite\Graphing;
use Icinga\Module\Graphite\Util\MacroTemplate;
use Icinga\Module\Graphite\Web\Widget\GraphImage;
use Icinga\Web\Response;
class Chart
{
/**
* Used to render the chart
*
* @var GraphiteWebClient
*/
protected $graphiteWebClient;
/** @var ?string This chart's background color */
protected $bgcolor;
/** @var ?string This chart's foreground color */
protected $fgcolor;
/** @var ?string This chart's major grid line color */
protected $majorGridLineColor;
/** @var ?string This chart's minor grid line color */
protected $minorGridLineColor;
/**
* This chart's base
*
* @var Template
*/
protected $template;
/**
* Target metrics by curve name
*
* @var string[]
*/
protected $metrics;
/**
* The chart's begin
*
* @var string
*/
protected $from = '-14400';
/**
* The chart's end
*
* @var string
*/
protected $until;
/**
* The chart's width
*
* @var int
*/
protected $width = 350;
/**
* The chart's height
*
* @var int
*/
protected $height = 200;
/**
* Whether to show the chart's legend
*
* @var bool
*/
protected $showLegend = true;
/**
* Constructor
*
* @param GraphiteWebClient $graphiteWebClient Used to render the chart
* @param Template $template This chart's base
* @param string[] $metrics Target metrics by curve name
*/
public function __construct(GraphiteWebClient $graphiteWebClient, Template $template, array $metrics)
{
$this->graphiteWebClient = $graphiteWebClient;
$this->template = $template;
$this->metrics = $metrics;
}
/**
* Let Graphite Web render this chart and serve the result immediately to the user agent (via the given response)
*
* Does not return.
*
* @param Response $response
*/
public function serveImage(Response $response)
{
$image = new GraphImage($this);
// Errors should occur now or not at all
$image->render();
$response
->setHeader('Content-Type', 'image/png', true)
->setHeader('Content-Disposition', 'inline; filename="graph.png"', true)
->setHeader('Cache-Control', null, true)
->setHeader('Expires', null, true)
->setHeader('Pragma', null, true)
->setBody($image)
->sendResponse();
exit;
}
/**
* Extract the values of the template's metrics filters' variables from the target metrics
*
* @return string[]
*/
public function getMetricVariables()
{
/** @var MacroTemplate[][] $curves */
$curves = $this->template->getFullCurves();
$variables = [];
foreach ($this->metrics as $curveName => $metric) {
$vars = $curves[$curveName][0]->reverseResolve($metric);
if ($vars !== false) {
$variables = array_merge($variables, $vars);
}
}
return $variables;
}
/**
* Get Graphite Web client
*
* @return GraphiteWebClient
*/
public function getGraphiteWebClient()
{
return $this->graphiteWebClient;
}
/**
* Get this chart's background color
*
* @return string|null
*/
public function getBackgroundColor(): ?string
{
return $this->bgcolor;
}
/**
* Set this chart's background color
*
* @param string|null $color
*
* @return $this
*/
public function setBackgroundColor(?string $color): self
{
$this->bgcolor = $color;
return $this;
}
/**
* Get this chart's foreground color
*
* @return string|null
*/
public function getForegroundColor(): ?string
{
return $this->fgcolor;
}
/**
* Set this chart's foreground color
*
* @param string|null $color
*
* @return $this
*/
public function setForegroundColor(?string $color): self
{
$this->fgcolor = $color;
return $this;
}
/**
* Get this graph's major grid line color
*
* @return string|null
*/
public function getMajorGridLineColor(): ?string
{
return $this->majorGridLineColor;
}
/**
* Set this graph's major grid line color
*
* @param string|null $color
*
* @return $this
*/
public function setMajorGridLineColor(?string $color): self
{
$this->majorGridLineColor = $color;
return $this;
}
/**
* Get this graph's minor grid line color
*
* @return string|null
*/
public function getMinorGridLineColor(): ?string
{
return $this->minorGridLineColor;
}
/**
* Set this graph's minor grid line color
*
* @param string|null $color
*
* @return $this
*/
public function setMinorGridLineColor(?string $color): self
{
$this->minorGridLineColor = $color;
return $this;
}
/**
* Get template
*
* @return Template
*/
public function getTemplate()
{
return $this->template;
}
/**
* Get metrics
*
* @return string[]
*/
public function getMetrics()
{
return $this->metrics;
}
/**
* Get begin
*
* @return string
*/
public function getFrom()
{
return $this->from;
}
/**
* Set begin
*
* @param string $from
*
* @return $this
*/
public function setFrom($from)
{
$this->from = $from;
return $this;
}
/**
* Get end
*
* @return string
*/
public function getUntil()
{
return $this->until;
}
/**
* Set end
*
* @param string $until
*
* @return $this
*/
public function setUntil($until)
{
$this->until = $until;
return $this;
}
/**
* Get width
*
* @return int
*/
public function getWidth()
{
return $this->width;
}
/**
* Set width
*
* @param int $width
*
* @return $this
*/
public function setWidth($width)
{
$this->width = $width;
return $this;
}
/**
* Get height
*
* @return int
*/
public function getHeight()
{
return $this->height;
}
/**
* Set height
*
* @param int $height
*
* @return $this
*/
public function setHeight($height)
{
$this->height = $height;
return $this;
}
/**
* Get whether to show the chart's legend
*
* @return bool
*/
public function getShowLegend()
{
return $this->showLegend;
}
/**
* Set whether to show the chart's legend
*
* @param bool $showLegend
*
* @return $this
*/
public function setShowLegend($showLegend)
{
$this->showLegend = $showLegend;
return $this;
}
}
|
