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<?php |
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namespace PhpBoot\RPC; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\ClientInterface; |
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use PhpBoot\Application; |
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use PhpBoot\Controller\ControllerContainer; |
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use PhpBoot\Controller\ControllerContainerBuilder; |
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use PhpBoot\Controller\ExceptionRenderer; |
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use PhpBoot\Controller\Route; |
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use PhpBoot\Utils\ArrayAdaptor; |
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use PhpBoot\Utils\ArrayHelper; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class RpcProxy |
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{ |
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/** |
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* PRC 代理 |
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* |
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* 通过__call实现代理时, 无法传递引用参数, 默认处理方式是抛出异常。如果想忽略此参数, 可以把ignoreReferenceParam设置为 true。 |
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* |
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* 如果需要使用引用参数, 可以继承RpcProxy, 并重对应方法。 |
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* |
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* TODO 支持鉴权 |
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* |
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* RpcProxy constructor. |
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* @param Application $app |
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* @param ControllerContainerBuilder $builder |
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* @param Client $http |
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* @param string $interface |
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* @param string $prefix |
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*/ |
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public function __construct(Application $app, |
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ControllerContainerBuilder $builder, |
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Client $http, |
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$interface, |
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$prefix='/') |
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{ |
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$this->container = $builder->build($interface); |
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$this->http = $http; |
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$this->uriPrefix = $prefix; |
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$this->app = $app; |
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} |
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public function __call($method, $args) |
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{ |
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$route = $this->container->getRoute($method) |
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or \PhpBoot\abort($this->container->getClassName()." $method is not a valid http interface"); |
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$request = $this->createRequest($method, $route, $args); |
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if(MultiRpc::isRunning()){ |
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$op = $this->http->sendAsync($request); |
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$res = MultiRpc::wait($op); |
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return $this->mapResponse($method, $route, $res, $args); |
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}else{ |
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$res = $this->http->send($request); |
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return $this->mapResponse($method, $route, $res, $args); |
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} |
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} |
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/** |
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* @param $actionName |
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* @param Route $route |
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* @param array $args |
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* @return RequestInterface |
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*/ |
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public function createRequest($actionName, Route $route, array $args) |
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{ |
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$params = $route->getRequestHandler()->getParamMetas(); |
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//TODO 支持 query、content、path以外的其他参数, 如cookie,path等 |
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$request = []; |
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foreach ($params as $pos=>$param){ |
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if(!array_key_exists($pos, $args) && $param->isOptional){ |
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$args[$pos] = $param->default; |
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} |
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array_key_exists($pos, $args) or \PhpBoot\abort( |
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$this->container->getClassName()." $actionName missing param {$param->name}"); |
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if(!$param->isPassedByReference){ |
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ArrayHelper::set($request, $param->source, $args[$pos]); |
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} |
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} |
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if(isset($request['request'])){ |
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$request = $request['request']; |
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} |
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$uri = $route->getUri(); |
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foreach($route->getPathParams() as $path){ |
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if(isset($request[$path])){ |
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$uri = str_replace('{'.$path.'}', urlencode($request[$path]) , $uri); |
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unset($request[$path]); |
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} |
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} |
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$httpMethod = $route->getMethod(); |
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$query = []; |
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$body = null; |
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$headers = []; |
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if(isset($request['query'])){ |
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$query += $request['query']; |
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} |
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unset($request['query']); |
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if(isset($request['headers'])){ |
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$headers += $request['headers']; |
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} |
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unset($request['headers']); |
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if(isset($request['cookies'])){ |
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$cookies = []; |
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foreach ($request['cookies'] as $k=>$v){ |
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$cookies[] = "$k=$v"; |
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} |
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$headers['Cookie'] = implode('; ', $cookies); |
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} |
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unset($request['cookies']); |
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if(isset($request['request'])){ |
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if($body === null){ |
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$body = []; |
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} |
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$body += $request['request']; |
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} |
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unset($request['request']); |
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if(isset($request['files'])){ |
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\PhpBoot\abort(new \UnexpectedValueException("sending request with files is not support")); |
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} |
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if(in_array($httpMethod, ['GET', 'OPTION'])){ |
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foreach ($request as $k => $v){ |
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if(!in_array($k, ['query', 'request', 'files', 'cookies', 'headers'])){ |
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$query[$k] = $v; |
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} |
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} |
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}else{ |
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foreach ($request as $k => $v){ |
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if(!in_array($k, ['query', 'request', 'files', 'cookies', 'headers'])){ |
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if($body === null){ |
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$body = []; |
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} |
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$body[$k] = $v; |
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} |
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} |
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} |
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if($body !== null){ |
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$body = json_encode($body, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE); |
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} |
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$uri = $this->uriPrefix.ltrim($uri, '/'); |
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if(strpos($uri,'?') === false){ |
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$uri = $uri.'?'.http_build_query($query); |
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}else{ |
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$uri = $uri.'&'.http_build_query($query); |
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} |
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return new \GuzzleHttp\Psr7\Request( |
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$httpMethod, |
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$uri, |
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$headers, |
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$body |
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); |
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} |
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public function mapResponse($actionName, Route $route, ResponseInterface $response, $requestArg=[]) |
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{ |
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$response = \Symfony\Component\HttpFoundation\Response::create( |
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(string)$response->getBody(), |
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$response->getStatusCode(), |
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$response->getHeaders() |
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); |
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$namedArgs = []; |
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foreach ($route->getRequestHandler()->getParamMetas() as $pos=>$param){ |
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if($param->isPassedByReference){ |
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$namedArgs[$param->name] = &$requestArg[$pos]; |
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} |
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} |
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$content = json_decode((string)$response->getContent(), true); |
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//TODO 远端接口没有抛出异常,但设置了 status( status 不是200)时如何处理 |
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$handler = $route->getResponseHandler(); |
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if($response->getStatusCode() >= 200 && $response->getStatusCode() <300){ |
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$returns = $handler->getMappings(); |
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$buffer = []; |
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ArrayHelper::set($buffer, 'response.content', $content); |
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ArrayHelper::set($buffer, 'response.headers', new ArrayAdaptor($response->headers)); |
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ArrayHelper::set($buffer, 'response.cookies', $response->headers->getCookies()); |
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//TODO 支持 cookie |
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//ArrayHelper::set($response, 'response.cookies'); |
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$mapping = [ |
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'params'=>$namedArgs |
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]; |
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foreach ($returns as $map=>$return){ |
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$data = \JmesPath\search($map, $buffer); |
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if(!$return->container){ |
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continue; |
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} |
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$data = $return->container->make($data, false); |
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ArrayHelper::set($mapping, $return->source, $data); |
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} |
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}else{ |
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//TODO 如果多个 异常对应同一个 statusCode 怎么处理 |
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$exceptions = $route->getExceptionHandler()->getExceptions(); |
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$errName = null; |
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foreach ($exceptions as $err){ |
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$renderer = $this->app->get(ExceptionRenderer::class); |
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$exec = $renderer->render( |
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$this->app->make($err, ['message'=>(string)$response->getContent()]) |
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); |
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if( $exec->getStatusCode() == $response->getStatusCode()){ |
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throw $exec; |
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} |
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} |
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throw new \RuntimeException((string)$response->getContent()); |
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}; |
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if(isset($mapping['return'])){ |
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return $mapping['return']; |
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}; |
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} |
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/** |
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* @var ControllerContainer |
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*/ |
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protected $container; |
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/** |
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* @var ClientInterface |
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*/ |
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protected $http; |
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/** |
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* @var string |
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*/ |
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protected $uriPrefix; |
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254
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255
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/** |
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256
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* @var Application |
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*/ |
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protected $app; |
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} |
caoym /
phpboot
Loading history...
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.