public static function make_delta($app_id)
{
// 获取包信息
$app = Model_App::instance()->get_info_by_id($app_id);
if (empty($app)) {
Rest_Log::error("{$app_id}对应的记录不存在，无法生成增量包");
throw new Rest_Exception(Rest_Response::HTTP_SERVER_ERROR, "{$app_id}对应的记录不存在，无法生成增量包");
}
// 判断当前包是否为强制升级
if (Model_App::instance()->is_force_update($app['force_update'])) {
Rest_Log::trace("{$app_id}对应的记录不存在，无法生成增量包");
return;
}
// 获取当前包之前的X个包
$app_delta_config = Rest_Config::get('appdelta');
$condition = ['client_id' => $app['client_id'], 'platform' => $app['platform'], 'channel' => $app['channel'], 'inner_version < ' => $app['inner_version']];
$src_app_list = Model_App::instance()->get_list($condition, ['inner_version' => 'desc'], 0, $app_delta_config['limit']);
if (empty($src_app_list)) {
Rest_Log::trace("{$app_id}对应的包列表不存在，就不生成增量包了");
return;
}
foreach ($src_app_list as $src_app) {
self::do_make_delta($src_app, $app);
}
}
