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<?php
require_once __DIR__ . "/vendor/autoload.php";
use \Aws\S3\S3Client;
use \Aws\Exception\AwsException;
class Cache_S3 extends Plugin implements Cache_Adapter {
/** @phpstan-ignore-next-line */
private S3Client $s3;
private string $dir;
const CACHE_S3_ENDPOINT = "CACHE_S3_ENDPOINT";
const CACHE_S3_BUCKET = "CACHE_S3_BUCKET";
const CACHE_S3_REGION = "CACHE_S3_REGION";
const CACHE_S3_ACCESS_KEY = "CACHE_S3_ACCESS_KEY";
const CACHE_S3_SECRET_KEY = "CACHE_S3_SECRET_KEY";
public function remove(string $filename): bool {
return unlink($this->get_full_path($filename));
}
function about() {
return array(null,
"File cache backend using S3 protocol (experimental)",
"fox",
true);
}
function init($host) {
Config::add(self::CACHE_S3_ENDPOINT, "", Config::T_STRING);
Config::add(self::CACHE_S3_BUCKET, "", Config::T_STRING);
Config::add(self::CACHE_S3_REGION, "", Config::T_STRING);
Config::add(self::CACHE_S3_ACCESS_KEY, "", Config::T_STRING);
Config::add(self::CACHE_S3_SECRET_KEY, "", Config::T_STRING);
$s3_client_props = [
'version' => 'latest',
'region' => Config::get(self::CACHE_S3_REGION),
'endpoint' => Config::get(self::CACHE_S3_ENDPOINT),
'use_path_style_endpoint' => true,
];
if (Config::get(self::CACHE_S3_ACCESS_KEY) && Config::get(self::CACHE_S3_SECRET_KEY)) {
$s3_client_props['credentials'] = [
'key' => Config::get(self::CACHE_S3_ACCESS_KEY),
'secret' => Config::get(self::CACHE_S3_SECRET_KEY),
];
}
/** @phpstan-ignore-next-line */
$this->s3 = new Aws\S3\S3Client($s3_client_props);
/** @phpstan-ignore-next-line */
$this->s3->registerStreamWrapper();
}
public function get_mtime(string $filename) {
return filemtime($this->get_full_path($filename));
}
public function set_dir(string $dir): void {
$this->dir = $dir;
}
public function get_dir(): string {
return $this->dir;
}
public function make_dir(): bool {
return true;
}
public function is_writable(?string $filename = null): bool {
return true;
}
public function exists(string $filename): bool {
return file_exists($this->get_full_path($filename));
}
public function get_size(string $filename) {
return filesize($this->get_full_path($filename));
}
public function put(string $filename, $data) {
return file_put_contents($this->get_full_path($filename), $data);
}
public function get(string $filename): ?string {
return file_get_contents($this->get_full_path($filename));
}
public function get_full_path(string $filename): string {
return 's3://' . Config::get(self::CACHE_S3_BUCKET) . '/' . ($this->dir ? $this->dir . '/' : '') . basename(clean($filename));
}
public function get_mime_type(string $filename) {
$fh = fopen($this->get_full_path($filename), 'r');
if ($fh) {
$mimetype = mime_content_type($fh);
fclose($fh);
return $mimetype;
}
return false;
}
public function send(string $filename) {
return readfile($this->get_full_path($filename));
}
public function expire_all(): void {
$dh = opendir('s3://' . Config::get(self::CACHE_S3_BUCKET));
$rules = [];
if ($dh) {
while (($file = readdir($dh)) !== false) {
$full_path = $this->get_full_path($file);
if (is_dir($full_path) && !file_exists("$full_path/.no-auto-expiry")) {
array_push($rules,
[
'ID' => $file,
'Expiration' => [
'Days' => (int) Config::get(Config::CACHE_MAX_DAYS),
],
'Filter' => [
'Prefix' => $file
],
'Status' => 'Enabled'
]
);
}
}
closedir($dh);
}
try {
/** @phpstan-ignore-next-line */
$this->s3->putBucketLifecycleConfiguration([
'Bucket' => Config::get(self::CACHE_S3_BUCKET),
'LifecycleConfiguration' => [
'Rules' => $rules
]
]);
Debug::log("Set lifecycle policy on " . count($rules) . " prefixe(s).");
} catch (Exception $e) {
user_error($e, E_USER_WARNING);
}
}
function api_version() {
return 2;
}
}
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