session handler using google cloud storage

php_session_in_gcp.php

<?php
require_once 'vendor/autoload.php';
use Google\Cloud\Storage\StorageClient;

class MySessionHandler implements SessionHandlerInterface{
  private $savePath;
	private $storage;
	private $bucket;
	
	public function __construct(){
		$this->savePath = "session-dev";
		$this->storage = new StorageClient([
								'keyFilePath' => 'session_dev.json'
							]);
		$this->bucket = $this->storage->bucket($this->savePath);
		
		$this->storage->registerStreamWrapper();
	}
	
    public function open($savePath, $sessionName) {
		// tidak diimplementasikan karena sudah spesifik ke bucket tertentu di GCP
        return true;
    }

    public function close() {
        return true;
    }

    
    public function read($id){
        return (string) @file_get_contents('gs://'.$this->savePath.'/'.$id);
    }

    public function write($id, $data){
        return file_put_contents('gs://'.$this->savePath.'/'.$id, $data) === false ? false : true;
    }

    public function destroy($id){
        
		$object = $this->bucket->object($id);
		$object->delete();
        return true;
    }

    
    public function gc($maxlifetime){
		// tidak diimplementasikan , lebih baik menggunakan konfigurasi lifecycle di bucket pada gcp
        return true;
    }
}

$handler = new MySessionHandler();
session_set_save_handler($handler, true);
session_start();