Generate S3 Presigned URL

generateS3PresignedURL.ts

import AWS = require('aws-sdk');
var axios = require('axios');
import { readFileSync } from 'fs'
import * as request from 'request'
import { readFile } from 'fs'
import { promisify } from 'util';

const S3_BUCKET = `your-s3-bucket`;


const getPresignedUrl = async (fileName, fileType) => {
  const s3 = new AWS.S3();  // Create a new instance of S3

  // Set up the payload of what we are sending to the S3 api
  const s3Params = {
    Bucket: S3_BUCKET,
    Key: fileName,
    Expires: 5000,
    //ContentType: fileType,
    // ACL: 'public-read',
    ContentType: 'application/octet-stream'
  };
  // Make a request to the S3 API to get a signed URL which we can use to upload our file

  try {
    const data = await s3.getSignedUrlPromise('putObject', s3Params);
    const returnData = {
      signedRequest: data,
      url: `https://${S3_BUCKET}.s3.amazonaws.com/${fileName}`
    };

    return returnData;

  } catch (err) {
    console.log('err: ', err);
  }
}

(async () => {
  const signature = await getPresignedUrl('car.jpg', 'image/jpeg')
  console.log('signature: ', signature);
})()

getPresignedUrl.py

import boto3
s3_client = boto3.client('s3') 

response = None
try: 
  response = s3_client.generate_presigned_url(
    'put_object', 
    Params={
      'Bucket': 'bucket-name', 
      'Key': 'car.jpg'}, 
      ExpiresIn=5000) 
  print(response)    
except Exception as e: 
  print("In client error exception code") 
  print(e) 

s3Clicommands.sh

#cors.json
{
  "CORSRules": [
    {
      "AllowedOrigins": ["*"],
      "AllowedHeaders": ["*"],
      "AllowedMethods": ["PUT", "POST", "DELETE"],
      "MaxAgeSeconds": 3000
    }
  ]
}
#create bucket with cors
aws s3api create-bucket --bucket bucket-name --acl public-read-write --region ap-southeast-2  --create-bucket-configuration LocationConstraint=ap-southeast-2

# setup cors
aws s3api put-bucket-cors --bucket bucket-name --cors-configuratio file://cors.json --region ap-southeast-2

# upload to s3 using presigned URL
curl -X PUT -v -T ./car.jpg 'https://bucket-name.s3.amazonaws.com/car.jpg?AWSAccessKeyId=AKIAIWJZU6ZOALBQK4KQ&Content-Type=application%2Foctet-stream&Expires=1576279219&Signature=K%2B0IEe5FloSxxyXwAoBXzUru2rM%3D' -H 'Content-Type: application/octet-stream'


}

s3Cors.xml

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <AllowedMethod>PUT</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

uploadUsingPresignedUrl.ts

async function putobjectUsingSignature(signatue) {

  const readFilePromise = promisify(readFile);
  const file = await readFilePromise('./car.jpg')
  console.log('signatue.signedRequest: ', signatue.signedRequest)
  
  request({
    method: 'PUT',
    url: signatue.signedRequest,
    body: file, 
    headers: {
      'Content-Type': 'application/octet-stream'
    }
  }, (error, response, body) => {
    // console.log(response)
  })

}

(async () => {
  const signature = await getPresignedUrl('car.jpg', 'image/jpeg')
  console.log('signature: ', signature);

  await putobjectUsingSignature(signature)
})()