谷歌云功能-错误:ENOENT:没有这样的文件或目录

Question

我正在尝试做一个简单的函数，调整存储中新上传的图像的大小。我使用以下内容来帮助我做到这一点：

import { tmpdir } from 'os';
import { join, dirname } from 'path';
import * as sharp from 'sharp';
import * as fs from 'fs-extra';

当此代码执行时：

await bucket.file(filePath).download({
    destination: tmpFilePath
});

我在谷歌云功能日志中得到以下错误：

错误：ENOENT:没有这样的文件或目录，在错误(本机(处打开'/tmp/images/1542144115815_Emperor_pensions.jpg'

这是完整的代码[段]：

const gcs = admin.storage();
const db = admin.firestore();
import { tmpdir } from 'os';
import { join, dirname } from 'path';
import * as sharp from 'sharp';
import * as fs from 'fs-extra';
export const imageResize = functions.storage
    .object()
    .onFinalize(async object => {
        console.log('> > > > > > > 1.3 < < < < < < <');
        const bucket = gcs.bucket(object.bucket);
        console.log(object.name);
        const filePath = object.name;
        const fileName = filePath.split('/').pop();
        const tmpFilePath = join(tmpdir(), object.name);
        const thumbFileName = 'thumb_' + fileName;
        const tmpThumbPath = join(tmpdir(), thumbFileName);
        console.log('step 1');
        // Resizing image
        if (fileName.includes('thumb_')) {
            console.log('exiting function');
            return false;
        }
        console.log('step 2');
        console.log(`filePath: ${filePath}`);
        console.log(`tmpFilePath: ${tmpFilePath}`);
        await bucket.file(filePath).download({
            destination: tmpFilePath
        });
        console.log('step 3');
        await sharp(tmpFilePath)
            .resize(200, 200)
            .toFile(tmpThumbPath);
        await bucket.upload(tmpThumbPath, {
            destination: join(dirname(filePath), thumbFileName)
        });

UPDATE 1：添加await fs.ensureDir(tmpFilePath);以确保文件路径存在。现在得到一个新错误：

错误：EINVAL：无效参数，在错误(本机(处打开'/tmp/images/1542146603970_mouse.png'

更新2已解决：添加了一个解决方案作为下面的答案。

Answer 1

我更改了以下代码

来自

const bucket = gcs.bucket(object.bucket);
const filePath = object.name;
const fileName = filePath.split('/').pop();
const tmpFilePath = join(tmpdir(), object.name);
const thumbFileName = 'thumb_' + fileName;
const tmpThumbPath = join(tmpdir(), thumbFileName);

到

const bucket = gcs.bucket(object.bucket);
const filePath = object.name;
const fileName = filePath.split('/').pop();
const thumbFileName = 'thumb_' + fileName;
const workingDir = join(tmpdir(), `${object.name.split('/')[0]}/`);//new
const tmpFilePath = join(workingDir, fileName);
const tmpThumbPath = join(workingDir, thumbFileName);
await fs.ensureDir(workingDir);

正如您所看到的，我创建了一个在路径之间共享的workingDir，然后运行await fs.ensureDir(workingDir);来创建路径。这解决了我的问题。

Answer 2

我怀疑您看到该消息是因为您试图写入以下路径：

/tmp/images/1542144115815_Emperor_penguins.jpg

不首先创建父目录：

/tmp/images

您无法将文件写入不存在的本地文件系统文件夹，而且云存储SDK似乎不会为您创建它。