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[SQLiteCache] Implement cache based on SQLite 3 (#1035)

This commit is contained in:
fulmeek 2019-02-24 12:04:27 +01:00 committed by LogMANOriginal
parent e3588f62bd
commit dc1b1b13cc
2 changed files with 97 additions and 3 deletions
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96
caches/SQLiteCache.php Normal file
View File

@ -0,0 +1,96 @@
<?php
/**
* Cache based on SQLite 3 <https://www.sqlite.org>
*/
class SQLiteCache implements CacheInterface {
protected $path;
protected $param;
private $db = null;
public function __construct() {
$file = PATH_CACHE . 'cache.sqlite';
if (!is_file($file)) {
$this->db = new SQLite3($file);
$this->db->enableExceptions(true);
$this->db->exec("CREATE TABLE storage ('key' BLOB PRIMARY KEY, 'value' BLOB, 'updated' INTEGER)");
} else {
$this->db = new SQLite3($file);
$this->db->enableExceptions(true);
}
$this->db->busyTimeout(5000);
}
public function loadData(){
$Qselect = $this->db->prepare('SELECT value FROM storage WHERE key = :key');
$Qselect->bindValue(':key', $this->getCacheKey());
$result = $Qselect->execute();
if ($result instanceof SQLite3Result) {
$data = $result->fetchArray(SQLITE3_ASSOC);
if (isset($data['value'])) {
return unserialize($data['value']);
}
}
return null;
}
public function saveData($datas){
$Qupdate = $this->db->prepare('INSERT OR REPLACE INTO storage (key, value, updated) VALUES (:key, :value, :updated)');
$Qupdate->bindValue(':key', $this->getCacheKey());
$Qupdate->bindValue(':value', serialize($datas));
$Qupdate->bindValue(':updated', time());
$Qupdate->execute();
return $this;
}
public function getTime(){
$Qselect = $this->db->prepare('SELECT updated FROM storage WHERE key = :key');
$Qselect->bindValue(':key', $this->getCacheKey());
$result = $Qselect->execute();
if ($result instanceof SQLite3Result) {
$data = $result->fetchArray(SQLITE3_ASSOC);
if (isset($data['updated'])) {
return $data['updated'];
}
}
return false;
}
public function purgeCache($duration){
$Qdelete = $this->db->prepare('DELETE FROM storage WHERE updated < :expired');
$Qdelete->bindValue(':expired', time() - $duration);
$Qdelete->execute();
}
/**
* Set cache path
* @return self
*/
public function setPath($path){
$this->path = $path;
return $this;
}
/**
* Set HTTP GET parameters
* @return self
*/
public function setParameters(array $param){
$this->param = array_map('strtolower', $param);
return $this;
}
////////////////////////////////////////////////////////////////////////////
protected function getCacheKey(){
if(is_null($this->param)) {
throw new \Exception('Call "setParameters" first!');
}
return hash('sha1', $this->path . http_build_query($this->param), true);
}
}

4
tests/CacheImplementationTest.php
View File

@ -5,7 +5,6 @@ use PHPUnit\Framework\TestCase;
class CacheImplementationTest extends TestCase {
private $class;
private $obj;
/**
* @dataProvider dataCachesProvider
@ -22,7 +21,7 @@ class CacheImplementationTest extends TestCase {
*/
public function testClassType($path) {
$this->setCache($path);
$this->assertInstanceOf(CacheInterface::class, $this->obj);
$this->assertTrue(is_subclass_of($this->class, CacheInterface::class), 'class must be subclass of CacheInterface');
}
////////////////////////////////////////////////////////////////////////////
@ -39,6 +38,5 @@ class CacheImplementationTest extends TestCase {
require_once $path;
$this->class = basename($path, '.php');
$this->assertTrue(class_exists($this->class), 'class ' . $this->class . ' doesn\'t exist');
$this->obj = new $this->class();
}
}