Question

当我尝试使用Guzzle下载许多图像时遇到问题。其中一些可能无效，因此当我发出AsyncRequest时，我无法处理每个图像的异常。

我试图制定一种验证方法，该方法必须适用于下载的文件，但不能按时工作。


$requests = function () use ($client, $imagesMetaData) {
            foreach ($imagesMetaData as $index => $image) {
                yield $index => function () use ($client, $image) {
                    try {
                        $resource = fopen($image['savePath'], 'w+b');
                        if (!$resource) {
                            // do smth
                        }

                        $opts = ['sink' => $resource];
                        $result = $client->requestAsync('GET', $image['downloadUri'], $opts);

                        return ($result);

                    } catch (\Exception $e) {
                        $image['writeLog'](
                            // do smth
                        );

                        return new Response(404);
                    }
                };
            }
        };

Pool::batch($client, $requests(), [
                'concurrency' => 5,
                'fulfilled'   => function (Response $response, $index) use ($me, $imagesMetaData, &$fulfilled, &$rejected) {
                    $image = $imagesMetaData[$index];

                    foreach ($imagesMetaData as $image) {
                        if ($me->validateDownloadedImage($image)) {
                            $fulfilled[] = $image;
                        } else {
                            $rejected[] = $image;
                        }
                    }
                },
                'rejected'    => function ($reason, $index) use ($me, $imagesMetaData, &$rejected) {

                    $image = $imagesMetaData[$index];

                    $me->rejectImage($image, $reason);
                    $rejected[] = $image;
                }
            ]);

            return [$fulfilled, $rejected];

如果文件图像很好-一切正常，但是如果其中一个失败-我有下一个错误

在第250行的文件/var/www/my.site/localhost/core/libraries/guzzlehttp/psr7/src/Stream.php中抛出了类型为RuntimeException的目录导入异常。无法写入流。

https://i.imgur.com/SBLpni5.png

如果有人知道这一点，请帮助。

Answer 1

我通过打开流解决了此问题：

$stream   = stream_for($resource);

将此流传递给“接收器” ：

'sink' => $stream

最终代码如下：

$requests = function () use ($client, $imagesMetaData) {
            foreach ($imagesMetaData as $index => $image) {
                yield $index => function () use ($client, $image) {
                    try {
                        $resource = fopen($image['savePath'], 'w+b');
                        $stream   = stream_for($resource);

                        if (!$resource) {
                            // do smth
                        }

                        $opts = ['sink' => $stream];
                        $result = $client->requestAsync('GET', $image['downloadUri'], $opts);

                        return ($result);

                    } catch (\Exception $e) {
                        $image['writeLog'](
                            // do smth
                        );

                        return new Response(404);
                    }
                };
            }
        };

Pool::batch($client, $requests(), [
                'concurrency' => 5,
                'fulfilled'   => function (Response $response, $index) use ($me, $imagesMetaData, &$fulfilled, &$rejected) {
                    $image = $imagesMetaData[$index];

                    foreach ($imagesMetaData as $image) {
                        if ($me->validateDownloadedImage($image)) {
                            $fulfilled[] = $image;
                        } else {
                            $rejected[] = $image;
                        }
                    }
                },
                'rejected'    => function ($reason, $index) use ($me, $imagesMetaData, &$rejected) {

                    $image = $imagesMetaData[$index];

                    $me->rejectImage($image, $reason);
                    $rejected[] = $image;
                }
            ]);

            return [$fulfilled, $rejected];

如何处理Guzzle异步请求中的异常？

1 个答案: