Sharp Error: Input buffer contains unsupported image format

user_10270346 0
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I want to create image manipulation on the image fetched from the AWS S3 and would like to perform manipulation action on it. I am using stream to solve the problem of loading big files.

import AWS from 'aws-sdk'
import sharp from 'sharp'

const s3 = new AWS.S3()
const transformer = (w, res, next) =>
    sharp()
        .resize(w)
        .on('data', (data) => {
            console.log(data)
            res.write(data, 'binary')
        })
        .on('error', (err) => next(err))
        .on('end', () => {
            console.log('finished')
            res.status(200).end()
        })

const readStream = s3
    .getObject({
        Bucket: process.env.UPLOAD_BUCKET_NAME,
        Key: 'test.jpg'
        // Key: `${req.uid.uid}/${req.param('img')}`
    })
    .createReadStream()

const getImage = (w, res, next) => {
    readStream.pipe(transformer(w, res, next))
    readStream.on('error', (err) => next(err))
}

export default getImage

I am calling the getImage method on the route and this function serves images for the first time but when the second time the Image is requested, it throws Error: Input buffer contains unsupported image format

sharp node.js amazon-s3
1 Answers

I found the solution.

const getImage = (req, res, next) => {
    const w = parseInt(req.params.w)
    const readStream = s3
        .getObject({
            Bucket: process.env.UPLOAD_BUCKET_NAME,
            Key: 'test.jpg'
        })
        .createReadStream()

    const transformer = (w) => sharp().resize(w)
    pipeline(readStream, transformer(w), res, (err) => {
        if (err) {
            next(err)
        }
    })
}
export default getImage

It was acting like that because it was not scoped to the request.

user_102703460
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