Question

Im trying to upload images to S3 on Ruby on Rails using carrierwave and fog gems, images are uploaded correctly but when I try tu save the model containing information about the image that was just uploaded Im getting this error:

Excon::Errors::MovedPermanently in UserController#show
app/models/user.rb:46:in `process_image_with_key'
app/controllers/user_controller.rb:12:in `show'

<Excon::Response:0x007f97846a3c18 @body="<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<Error><Code>PermanentRedirect</Code><Message>The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint.</Message>

User model:

mount_uploader :image, AvatarUploader

def image_name
  File.basename(image.path || image.filename) if image
end

def process_image_with_key( key )
  unless key.nil?
    self.key = key
    self.remote_image_url = self.image.direct_fog_url(with_path: true)
    self.save!
  end
end

AvatarUploader:

# encoding: utf-8

class AvatarUploader < CarrierWave::Uploader::Base

  include CarrierWaveDirect::Uploader

  include CarrierWave::RMagick

  # Include the Sprockets helpers for Rails 3.1+ asset pipeline compatibility:
  include Sprockets::Helpers::RailsHelper
  include Sprockets::Helpers::IsolatedHelper

  include CarrierWave::MimeTypes
  process :set_content_type

  version :thumb do
    process resize_to_fill: [50, 50]
  end

end

User controller

def show
  @user = User.find_by_id(params[:id])
  @user.process_image_with_key(params[:key])
  @uploader = User.new.image
  @uploader.success_action_redirect = user_url(@user.id)
end

carriwerwave initializer

CarrierWave.configure do |config|
  config.fog_credentials = {
    :provider               => 'AWS',
    :aws_access_key_id      => ENV['AWS_ACCESS_KEY_ID'],
    :aws_secret_access_key  => ENV['AWS_SECRET_ACCESS_KEY'],
    :region                 => 'us-west-1'
  }
  config.fog_directory  = ENV['AWS_FILE_BUCKET']
  config.fog_attributes = {'Cache-Control'=>'max-age=315576000'}
end

gemfile

gem 'carrierwave'
gem 'rmagick'
gem 'fog'
gem 'carrierwave_direct'

Answer 1

<Error><Code>PermanentRedirect</Code><Message>The bucket you are attempting to access
must be addressed using the specified endpoint. Please send all future requests to 
this endpoint.</Message></Error>

This is a frequently encountered issue: You are trying to access a bucket in region us-west-1, however, for legacy reasons the default Amazon S3 region in most/all AWS SDKs is US Standard, which automatically routes requests to facilities in Northern Virginia or the Pacific Northwest using network maps (see Regions and Endpoints for details).

Therefore you simply need to specify the endpoint of your buckets region explicitly before using the S3 API, e.g. for us-west-1:

  config.fog_credentials = {
    :provider               => 'AWS',
    :aws_access_key_id      => ENV['AWS_ACCESS_KEY_ID'],
    :aws_secret_access_key  => ENV['AWS_SECRET_ACCESS_KEY'],
    :region                 => 'us-west-1'
    :endpoint               => 'https://s3-us-west-1.amazonaws.com/'
  }