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API网关平台的API可观测性规划指南

合作伙伴平台的PHP示例 requirements.php ```php declare(strict_types=1); namespace App; use Psr\Http\Message\ResponseInterface; use Psr\Http\Message\ServerRequestInterface; use Psr\Log\LoggerInterface; use React\EventLoop\Factory; use React\Http\Server; use React\Socket\Server as SocketServer; // PSR-15 middleware use Psr\Http\Server\MiddlewareInterface; use Psr\Http\Server\RequestHandlerInterface; class Requirements implements MiddlewareInterface { public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface { if (!isset($_SERVER['REMOTE_ADDR'])) { throw new \Exception('Remote server address not set.'); } return $handler->handle($request); } } return [ Requirements::class ]; ``` proxy.php ```php declare(strict_types=1); namespace App; use React\EventLoop\Factory; use React\Http\Server; use React\Socket\Server as SocketServer; $loop = Factory::create(); // Create the HTTP server $server = new Server( // The middleware is defined in requirements.php [new MiddlewareFactory], $loop ); // Create the socket server and bind it to the loop $socket = new SocketServer('127.0.0.1:8080', $loop); $socket->on('connection', function ($connection) use ($server) { $server->handle($connection); }); $loop->run(); ``` MiddlewareFactory.php ```php declare(strict_types=1); namespace App; use Psr\Http\Message\ResponseInterface; use Psr\Http\Message\ServerRequestInterface; use Psr\Log\LoggerInterface; // PSR-15 middleware use Psr\Http\Server\MiddlewareInterface; use Psr\Http\Server\RequestHandlerInterface; class MiddlewareFactory implements MiddlewareInterface { private $logger; public function __construct(LoggerInterface $logger) { $this->logger = $logger; } public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface { $this->logger->info('Proxying request: ' . $request->getUri()); $response = $handler->handle($request); $this->logger->info('Proxied response: ' . $response->getStatusCode()); return $response; } } ``` run.sh ```bash !/bin/bash composer install php -S localhost:8080 -t public ``` Usage Execute `run.sh` to start the proxy server. Then, you can send requests to `localhost:8080` and the proxy server will forward them to the remote server at `127.0.0.1:8080`. Note: You may need to modify the IP address and port numbers in `proxy.php` to match your specific requirements.