如何使用S3 API使用回形针gem在Rails应用程序上将红宝石图像上传到IBM Bluemix Object Storage？

Question

I have been using the tutorial: https://devcenter.heroku.com/articles/paperclip-s3 For adding images to S3 storage on AWS, but now want to use IBM's Object Storage which supports S3 API (using gem 'aws-sdk').

Using below:

config.paperclip_defaults = {
    storage: :s3,
    s3_credentials: {
      bucket: ENV.fetch('S3_BUCKET_NAME'),
      access_key_id: ENV.fetch('ACCESS_KEY_ID'),
      secret_access_key: ENV.fetch('SECRET_ACCESS_KEY'),
      s3_region: ENV.fetch('REGION'),
    }
  }

where REGION = 'us-geo'

gives the error

Seahorse::Client::NetworkingError (Failed to open TCP connection to david-provest-movies.s3.us-geo.amazonaws.com:443 (getaddrinfo: Name or service not known)).

---

How would I change the 'david-provest-movies.s3.us-geo.amazonaws.com:443' to the desired 'david-provest-movies.s3-api.us-geo.objectstorage.softlayer.net' URL?

Link to the API: https://developer.ibm.com/recipes/tutorials/cloud-object-storage-s3-api-intro/

Thank you :)

Answer 1

That is not a valid region for s3.

• us-east-2
• us-west-1
• us-west-2
• ca-central-1
• ap-south-1
• ap-northeast-2
• ap-southeast-1
• ap-southeast-2
• ap-northeast-1
• eu-central-1
• eu-west-1
• eu-west-2
• sa-east-1

http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region

Here is bluemix

Note: Using third-party tools or SDKs may enforce setting a 'LocationConstraint' when creating a bucket. If required, this value must be set to 'us-standard'. Unlike AWS S3, IBM COS uses this value to indicate the storage class of an object. This field has no relation to physical geography or region - those values are provided within the endpoint used to connect to the service. Currently, the only permitted values for 'LocationCostraint' are 'us-standard', 'us-vault', 'us-cold', 'us-flex', 'us-south-standard', 'us-south-vault', us-south-cold', and 'us-south-flex'.

Answer 2

I haven't actually tried to use paperclip yet, but the issue here is that the IBM Cloud endpoint needs to be specified. I'll take a closer look at the paperclip docs, but it looks like something along the lines of specifying the bucket URL (where {bucket-name} is hard coded in the below snippet but could be constructed) or some other method to explicitly specify the host name or root URL. There's a chance that paperclip has the AWS endpoint hardcoded and the team at IBM will need to contribute a method for setting a custom endpoint ( which is fully supported in the aws-sdk gem when creating clients ).

config.paperclip_defaults = {
    storage: :s3,
    s3_credentials: {
      bucket: ENV.fetch('S3_BUCKET_NAME'),
      access_key_id: ENV.fetch('ACCESS_KEY_ID'),
      secret_access_key: ENV.fetch('SECRET_ACCESS_KEY'),
      s3_region: ENV.fetch('REGION'),
      bucket_url: 'https://{bucket-name}.s3-api.us-geo.objectstorage.softlayer.net'
    }
  }

Let me know if it seems like using an explicit bucket URL doesn't work, and I'll look into whether the endpoint is hardcoded in paperclip and what we can do to fix it.