Viewing file:  CacheHeaderAnalyzer.php (3.01 KB) -rw-r--r--
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<?php
namespace Enlightn\Enlightn\Analyzers\Performance;
use Enlightn\Enlightn\Analyzers\Concerns\AnalyzesHeaders;
use GuzzleHttp\Client;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Support\Str;
class CacheHeaderAnalyzer extends PerformanceAnalyzer
{
use AnalyzesHeaders;
/**
* The title describing the analyzer.
*
* @var string|null
*/
public $title = 'Your application caches compiled assets for improved performance.';
/**
* The severity of the analyzer.
*
* @var string|null
*/
public $severity = self::SEVERITY_MAJOR;
/**
* The time to fix in minutes.
*
* @var int|null
*/
public $timeToFix = 15;
/**
* Determine whether the analyzer should be run in CI mode.
*
* @var bool
*/
public static $runInCI = false;
/**
* The list of uncached assets.
*
* @var \Illuminate\Support\Collection
*/
protected $unCachedAssets;
/**
* Create a new analyzer instance.
*
* @return void
*/
public function __construct()
{
$this->client = new Client();
}
/**
* Get the error message describing the analyzer insights.
*
* @return string
*/
public function errorMessage()
{
return "Your application does not set appropriate cache headers on your compiled Laravel Mix assets. "
."To improve performance, it is recommended to set Cache Control headers on your Mix assets via "
."your web server configuration. Your uncached assets include: {$this->formatUncachedAssets()}.";
}
/**
* Execute the analyzer.
*
* @param \Illuminate\Filesystem\Filesystem $files
* @return void
* @throws \Exception
*/
public function handle(Filesystem $files)
{
$manifest = json_decode($files->get(public_path('mix-manifest.json')), true);
$this->unCachedAssets = collect();
foreach ($manifest as $key => $value) {
if (is_string($value) && Str::contains($value, '?id=')
&& ! $this->headerExistsOnUrl((string) mix($key), 'Cache-Control')
&& ! $this->headerExistsOnUrl(asset($key), 'Cache-Control')) {
// We only take the cache busted (versioned) files as the others are presumably un-cacheable.
$this->unCachedAssets->push($key);
}
}
if ($this->unCachedAssets->count() > 0) {
$this->markFailed();
}
}
/**
* Determine whether to skip the analyzer.
*
* @return bool
*/
public function skip()
{
// Skip the analyzer if it's a local env or if the application does not use Laravel Mix.
return $this->isLocalAndShouldSkip() || ! file_exists(public_path('mix-manifest.json'));
}
/**
* @return string
*/
protected function formatUncachedAssets()
{
return $this->unCachedAssets->map(function ($file) {
return "[{$file}]";
})->join(', ', ' and ');
}
}
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