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115 lines
3.0 KiB
PHP
115 lines
3.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace base\mcp\service;
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use Psr\SimpleCache\CacheInterface;
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use think\cache\Driver;
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use think\facade\Cache;
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/**
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* think Cache 驱动的 PSR-16 薄适配器.
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*
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* mcp/sdk 的 Psr16SessionStore 需要 Psr\SimpleCache\CacheInterface 实现，
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* think cache Driver 方法集与 PSR-16 同形（get/set/delete/clear/has/*Multiple），
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* 本类只做签名收紧与 TTL 归一（int|DateInterval|null → 秒），全部转发给
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* defaultStore() 指定的 think 缓存 store。
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*
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* 子类（app 壳）覆写 defaultStore() 返回 'mcp_session' 等具体 store 名。
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*/
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class Psr16ThinkCacheBase implements CacheInterface
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{
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protected Driver $driver;
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public function __construct(?Driver $driver = null)
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{
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$this->driver = $driver ?? Cache::store($this->defaultStore());
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}
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/**
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* 默认 think 缓存 store 名（子类覆写）.
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*/
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protected function defaultStore(): string
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{
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return 'file';
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}
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public function get(string $key, mixed $default = null): mixed
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{
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return $this->driver->get($key, $default);
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}
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public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool
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{
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return (bool) $this->driver->set($key, $value, $this->normalizeTtl($ttl));
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}
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public function delete(string $key): bool
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{
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return (bool) $this->driver->delete($key);
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}
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public function clear(): bool
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{
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return (bool) $this->driver->clear();
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}
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public function getMultiple(iterable $keys, mixed $default = null): iterable
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{
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$keys = is_array($keys) ? $keys : iterator_to_array($keys, false);
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$result = [];
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foreach ($keys as $key) {
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$result[$key] = $this->driver->get($key, $default);
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}
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return $result;
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}
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public function setMultiple(iterable $values, null|int|\DateInterval $ttl = null): bool
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{
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$ttl = $this->normalizeTtl($ttl);
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$result = true;
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foreach ($values as $key => $value) {
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if (!$this->driver->set((string) $key, $value, $ttl)) {
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$result = false;
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}
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}
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return $result;
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}
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public function deleteMultiple(iterable $keys): bool
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{
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$result = true;
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foreach ($keys as $key) {
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if (!$this->driver->delete($key)) {
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$result = false;
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}
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}
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return $result;
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}
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public function has(string $key): bool
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{
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return (bool) $this->driver->has($key);
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}
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/**
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* PSR-16 TTL 归一为秒：DateInterval 折算秒数；null 视为 0（think 驱动默认有效期，0=永久）.
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*/
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protected function normalizeTtl(null|int|\DateInterval $ttl): int
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{
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if ($ttl instanceof \DateInterval) {
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$now = new \DateTimeImmutable('@' . time());
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return max(0, $now->add($ttl)->getTimestamp() - $now->getTimestamp());
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}
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return max(0, (int) ($ttl ?? 0));
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}
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}
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