50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
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# 请求中间件
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了解如何拦截 SDK 发起的请求，并统一添加额外的逻辑。
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UCloud SDK 为请求提供了请求中间件的特性。
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该特性允许在 请求/响应 的生命周期中添加自定义的逻辑。
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例如，Client 级别的中间件，可以拦截参数/响应字典:
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```php
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use UCloud\Core\Middleware\Context;
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use UCloud\Core\Middleware\Middleware;
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use UCloud\Core\Request\Request;
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use UCloud\Core\Response\Response;
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class LogMiddleware extends Middleware
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{
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public function handleRequest(Context $ctx): Request
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{
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$req = $ctx->getRequest();
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$logger = $ctx->getConfig()->getLogger();
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if ($logger != null) {
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$logger->info(sprintf("[request] %s", json_encode($req->toArray())));
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}
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return $req;
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}
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public function handleResponse(Context $ctx): Response
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{
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$resp = $ctx->getResponse();
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$logger = $ctx->getConfig()->getLogger();
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if ($logger != null) {
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$body = $resp->toArray();
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$logger->info(sprintf("[response: %s] %s", $resp->getRequestId(), json_encode($body)));
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}
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return $resp;
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}
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public function handleException(Context $ctx)
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{
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$e = $ctx->getException();
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$logger = $ctx->getConfig()->getLogger();
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if ($logger != null) {
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$logger->error(sprintf("[response: %s] %s Error: %s", $e->getRequestId(), $e->getType(), $e->getMessage()));
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}
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}
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}
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```
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