CODEWITHSUNDEEP
amazon-web-servicesamazon-s3aws-lambda
Himanshu
Himanshu

Reputation: 85

Image resize using AWS lambda in same bucket

Currently i have two buckets in S3 - let's call them buck and buck_thumb. Right now, when i uploads an image in to the buck bucket, which triggers a lambda function that resizes the image into a thumbnail and uploads the thumbnail into the buck_thumb bucket.

But now i want to make it like - when i send a image url in buck bucket then it download the image and re size it .

Is there a way ? I can do this using only one bucket?

Upvotes: 3

Views: 2863

Answers (2)

Abhixon
Abhixon

Reputation: 11

If you do it simply, then you upload -> resize -> upload -> resize..... unlimited loop. So, you should filter the size of the image. If the image already has been the proper size, stop the function.

gm(data.Body)
.size(function (err, size) {
  if(err){
    callback('gm(data.Body) error');
    context.fail(err);
  }
  if (size.width <= resizeWidth && size.height <= resizeHeight) {
    console.log('already resized')
    context.succeed({
    "error":false
     });
　  }
　});

Upvotes: 1

Luismi
Luismi

Reputation: 66

What I do is I set the lambda function to SNS Message Event, so when I upload to an S3 bucket I send from my server a SNS message to the configured url, and the message is the entire path on S3 to the file, so Lambda can download it, resize it and then upload with thumb_ or whatever.

Hope it helps! This is 4 months ago, but... I hope it helps future visitors XD

Upvotes: 5

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