phprs\RouterWithCache::__construct PHP Method

    function __construct()
    {
        $ok = false;
        if ($this->factory->getConfFile() === null) {
            $key = 'phprs_route3_' . sha1(serialize($this->factory->getConf()));
        } else {
            $key = 'phprs_route3_' . sha1($this->factory->getConfFile());
        }
        $this->impl = $this->cache->get($key, $ok);
        if ($ok && is_object($this->impl)) {
            Logger::info("router loaded from cache");
            return;
        }
        $this->impl = $this->factory->create('phprs\\Router');
        //缓存过期判断依据
        //检查接口文件是否有修改\新增
        $check_files = array_values($this->impl->getApiFiles());
        $check_dirs = array();
        foreach ($check_files as $file) {
            if (is_file($file)) {
                $check_dirs[] = dirname($file);
            }
        }
        $check_files = array_merge($check_files, $check_dirs);
        $check_files[] = $this->factory->getConfFile();
        $this->cache->set($key, $this->impl, 0, new FileExpiredChecker($check_files));
        //接口文件或者配置文件修改
    }