aws-sdk-ruby | The official AWS SDK for Ruby | AWS library

I am trying to upload an object using a presigned URL. But I want to upload the the object along with tags. What is the proper way to do it?

Approach 1:

I tried the following ruby code:

For a school project, I'm working on a Rails app which "sells" pics of kittens. I picked 10 pictures of cats online, they are currently on my computer. I'm using Postgresql for the DB. I have a class/model Item which represents the kitten photos.

What I'm looking for is a way to, when generating fake data through seeds.rb loops, attaching a kitten photo to each Item class/model, which will be then stored to an AWS S3 bucket that is already created (it's called catz-temple). I have my two access and secret S3 keys on a .env file, I already have modified my storage.yml file like so :

I'm trying to upload base64 encoded image to S3 bucket. My bucket list shows correctly after signing in. I'm trying to upload using the bucket#put_object

I don't see any hint as to what the invalid argument is.

My JSON body looks like.. ""product": { "product_photo": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAT8AAADQCAYAAABxw2ZIAAABQGlDQ1BJQ0MgUHJvZmlsZQAAKJFjYGASSCwoyGFhYGDIzSspCnJ3UoiIjFJgf8LAxsDMIAqEVonJxQWOAQE+QCUMMBoVfLvGwAiiL+uCzH ...."

and if I use the Carrierwave file storage, image saves fine.

How do I upload my base64 image using just the aws-sdk?

#Aws::S3::Bucket:0x00007fd60a2a8928 THat was the new bucket UPLOADING NOW Completed 500 Internal Server Error in 654ms (ActiveRecord: 17.3ms)

Aws::S3::Errors::InvalidArgument ():

app/controllers/products_controller.rb:139:in `supload'

I installed the gem webmock, which blocks external connections during the test suite. After I installed it, I got an unexpected result when running the test suite.

I'm somewhat confused why the aws-sdk needs to connect to 169.254.169.254 on initialization?

I can't find how to delete multiple objects at once using the ruby aws sdk, in the doc they have a code example on how to delete a folder that contains files :

I have a Gallery and Attachment models. A gallery has_many attachments and essentially all attachments are images referenced in the ':content' attribute of Attachment.

The images are uploaded using Carrierwave gem and are stored in Aws S3 via fog-aws gem. This works OK. However, I'd like to conduct image recognition to the uploaded images with Amazon Rekognition.

I've installed aws-sdk gem and I'm able to instantiate Rekognition without a problem until I call the detect_labels method at which point I have been unable to use my attached images as arguments of this method.

So fat I've tried:

The docs for the latest sigv4 s3 browser upload post - http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-post-example.html - show that I need to use x-amz-signature, x-amz-credential, and policy.

If I try that, I get an error saying that I'm missing AWSAccessKeyId, which is not mentioned in the docs, and that the x-amz-signature needs to be signature.

Am I supposed to be doing the base64 bucket policy doc above, or am I supposed to be doing the canonical approach, such as the python post to dynamoDB - http://docs.aws.amazon.com/general/latest/gr/sigv4-signed-request-examples.html#sig-v4-examples-post.

the canonical uses hmac hexdigest hmac.new(signing_key, (string_to_sign).encode('utf-8'), hashlib.sha256).hexdigest()

The upload doc above uses hmac with base64: Base64.encode64(OpenSSL::HMAC.digest('sha256', signaturekey, @policy)).

Under the hood of the ruby sdk, it looks like they are using the non-hmac hexdigest: OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), key, value).

Which method is needed to upload to s3?

FWIW, I'm using a SPA with Rails as an API, so I unfortunately don't have access to any rails view helpers.

I posted a question about my code yesterday, and unfortunately got shown a link that uses rails view helpers

What the policy is sending: