Question

我正在尝试执行一个简单的功能，以调整存储中新上载的图像的大小。我使用以下方法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';

执行此代码时：

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

我在Google Cloud Function日志中收到以下错误：

错误：ENOENT：没有此类文件或目录，请在错误（本机）处打开“ /tmp/images/1542144115815_Emperor_penguins.jpg”

这是完整的代码[segment]：

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)
        });

更新1 ：添加了await fs.ensureDir(tmpFilePath);以确保文件路径存在。现在出现新错误：

错误：EINVAL：参数无效，在错误（本机）处打开“ /tmp/images/1542146603970_mouse.png”

已解决更新2 ：在下面添加了解决方案作为答案。

Answer 1

我怀疑您会看到该消息，因为您尝试写入此路径：

/tmp/images/1542144115815_Emperor_penguins.jpg

无需先创建父目录：

/tmp/images

您无法将文件写入不存在的本地文件系统文件夹中，并且似乎Cloud Storage SDK不会为您创建该文件。

Answer 2

我更改了以下代码

发件人

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);

收件人

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);

如您所见，我创建了一个workingDir，该路径将在路径之间共享，然后运行await fs.ensureDir(workingDir);来创建路径。那解决了我的问题。

Google Cloud Function-错误：ENOENT：没有这样的文件或目录

2 个答案: