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<?php
namespace Barryvdh\Debugbar\Storage;
use DebugBar\Storage\StorageInterface;
use Illuminate\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;
/**
* Stores collected data into files
*/
class FilesystemStorage implements StorageInterface
{
protected $dirname;
protected $files;
protected $gc_lifetime = 24; // Hours to keep collected data;
protected $gc_probability = 5; // Probability of GC being run on a save request. (5/100)
/**
* @param \Illuminate\Filesystem\Filesystem $files The filesystem
* @param string $dirname Directories where to store files
*/
public function __construct($files, $dirname)
{
$this->files = $files;
$this->dirname = rtrim($dirname, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
}
/**
* {@inheritDoc}
*/
public function save($id, $data)
{
if (!$this->files->isDirectory($this->dirname)) {
if ($this->files->makeDirectory($this->dirname, 0777, true)) {
$this->files->put($this->dirname . '.gitignore', "*\n!.gitignore\n");
} else {
throw new \Exception("Cannot create directory '$this->dirname'..");
}
}
try {
$this->files->put($this->makeFilename($id), json_encode($data));
} catch (\Exception $e) {
//TODO; error handling
}
// Randomly check if we should collect old files
if (rand(1, 100) <= $this->gc_probability) {
$this->garbageCollect();
}
}
/**
* Create the filename for the data, based on the id.
*
* @param $id
* @return string
*/
public function makeFilename($id)
{
return $this->dirname . basename($id) . ".json";
}
/**
* Delete files older then a certain age (gc_lifetime)
*/
protected function garbageCollect()
{
foreach (
Finder::create()->files()->name('*.json')->date('< ' . $this->gc_lifetime . ' hour ago')->in(
$this->dirname
) as $file
) {
$this->files->delete($file->getRealPath());
}
}
/**
* {@inheritDoc}
*/
public function get($id)
{
return json_decode($this->files->get($this->makeFilename($id)), true);
}
/**
* {@inheritDoc}
*/
public function find(array $filters = [], $max = 20, $offset = 0)
{
// Sort by modified time, newest first
$sort = function (\SplFileInfo $a, \SplFileInfo $b) {
return strcmp($b->getMTime(), $a->getMTime());
};
// Loop through .json files, filter the metadata and stop when max is found.
$i = 0;
$results = [];
foreach (Finder::create()->files()->name('*.json')->in($this->dirname)->sort($sort) as $file) {
if ($i++ < $offset && empty($filters)) {
$results[] = null;
continue;
}
$data = json_decode($file->getContents(), true);
$meta = $data['__meta'];
unset($data);
if ($this->filter($meta, $filters)) {
$results[] = $meta;
}
if (count($results) >= ($max + $offset)) {
break;
}
}
return array_slice($results, $offset, $max);
}
/**
* Filter the metadata for matches.
*
* @param $meta
* @param $filters
* @return bool
*/
protected function filter($meta, $filters)
{
foreach ($filters as $key => $value) {
if (!isset($meta[$key]) || fnmatch($value, $meta[$key]) === false) {
return false;
}
}
return true;
}
/**
* {@inheritDoc}
*/
public function clear()
{
foreach (Finder::create()->files()->name('*.json')->in($this->dirname) as $file) {
$this->files->delete($file->getRealPath());
}
}
}
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