upload base64 encode image to lambda function

Question

I want to upload upload base64 encoded image to lambda function from postman.

{
  "name": "vendor"
  "image": "base64-enoceded"
}

Lambda Function

    
    try:
        data = json.loads(event['body'])
        name = data['name']
        image = data['image']
        image  = base64.b64decode(data['image'])
        cdn_object = CDNConnector('bunny_cdn_api_key','assets')
        cdn_object.upload_file('vendor-assets/', image)
        return {
            'statusCode': 200,
            "body": json.dumps("File uploaded")
        }
    except Exception as e:
        return {
            "statusCode":200,
            "body": str(e)
        }

But I got this error 'embedded null byte' when I show the file after decoded string, It shows class bytes. But the I want the actual file after decoding i.e. images.png after decoding that I will upload to CDN because CDN required file not bytes.

Jon S. · Accepted Answer · 2021-12-06 19:39:59Z

2

The API expects a file path, not the raw bytes. You have two options here:

In a Lambda function, you're allowed to write up to 512 Mb to /tmp. Open a binary file in /tmp, write your data here, and then use that file path for the upload.
```
 with open('/tmp/image.png', 'wb') as fout:
     fout.write(image)
 cdn_object.upload_file('vendor-assets/', '/tmp/image.png')
```
If I've found the API correctly, all that upload_file is doing is reading the entire file into memory and then issuing a PUT with that data. You could do this yourself and skip the wrapper function that requires you to write the data to the file first.

answered Dec 6, 2021 at 19:39

Jon S.

1,3788 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Shakeel Afridi Over a year ago

Thank you so much, You are a time saver.

Collectives™ on Stack Overflow

upload base64 encode image to lambda function

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related