aws-sdk-s3 instead of aws-sdk (#2481)

* Added support for aws-sdk-s3 gem which is now preferred way to interact with s3.

Reference: https://github.com/aws/aws-sdk-ruby/blob/master/V3_UPGRADING_GUIDE.md#library-maintainer

* Drop support for aws-sdk gem

README.md

@@ -567,7 +567,7 @@ Storage
 Paperclip ships with 3 storage adapters:
 
 * File Storage
-* S3 Storage (via `aws-sdk`)
+* S3 Storage (via `aws-sdk-s3`)
 * Fog Storage
 
 If you would like to use Paperclip with another storage, you can install these
@@ -593,10 +593,10 @@ _**NOTE**: This is a change from previous versions of Paperclip, but is overall
 safer choice for the default file store._
 
 You may also choose to store your files using Amazon's S3 service. To do so, include
-the `aws-sdk` gem in your Gemfile:
+the `aws-sdk-s3` gem in your Gemfile:
 
 ```ruby
-gem 'aws-sdk', '~> 2.3.0'
+gem 'aws-sdk-s3'
 ```
 
 And then you can specify using S3 from `has_attached_file`.

features/step_definitions/rails_steps.rb

@@ -17,7 +17,7 @@
       gem "jruby-openssl", :platform => :jruby
       gem "capybara"
       gem "gherkin"
-      gem "aws-sdk", "~> 2.0.0"
+      gem "aws-sdk-s3"
       gem "racc", :platform => :rbx
       gem "rubysl", :platform => :rbx
       """

lib/paperclip/storage/s3.rb

@@ -3,8 +3,8 @@ module Storage
     # Amazon's S3 file hosting service is a scalable, easy place to store files for
     # distribution. You can find out more about it at http://aws.amazon.com/s3
     #
-    # To use Paperclip with S3, include the +aws-sdk+ gem in your Gemfile:
-    #   gem 'aws-sdk'
+    # To use Paperclip with S3, include the +aws-sdk-s3+ gem in your Gemfile:
+    #   gem 'aws-sdk-s3'
     # There are a few S3-specific options for has_attached_file:
     # * +s3_credentials+: Takes a path, a File, a Hash or a Proc. The path (or File) must point
     #   to a YAML file containing the +access_key_id+ and +secret_access_key+ that Amazon
@@ -96,7 +96,7 @@ module Storage
     #   separate parts of your file name.
     # * +s3_host_name+: If you are using your bucket in Tokyo region
     #   etc, write host_name (e.g., 's3-ap-northeast-1.amazonaws.com').
-    # * +s3_region+: For aws-sdk v2, s3_region is required.
+    # * +s3_region+: For aws-sdk-s3, s3_region is required.
     # * +s3_metadata+: These key/value pairs will be stored with the
     #   object.  This option works by prefixing each key with
     #   "x-amz-meta-" before sending it as a header on the object
@@ -118,20 +118,16 @@ module Storage
     #     :s3_storage_class => :REDUCED_REDUNDANCY
     #
     #   Other storage classes, such as <tt>:STANDARD_IA</tt>, are also available—see the
-    #   documentation for the <tt>aws-sdk</tt> gem for the full list.
+    #   documentation for the <tt>aws-sdk-s3</tt> gem for the full list.
 
     module S3
       def self.extended base
         begin
-          require 'aws-sdk'
+          require "aws-sdk-s3"
         rescue LoadError => e
-          e.message << " (You may need to install the aws-sdk gem)"
+          e.message << " (You may need to install the aws-sdk-s3 gem)"
           raise e
         end
-        if Gem::Version.new(Aws::VERSION) >= Gem::Version.new(2) &&
-           Gem::Version.new(Aws::VERSION) <= Gem::Version.new("2.0.33")
-          raise LoadError, "paperclip does not support aws-sdk versions 2.0.0 - 2.0.33.  Please upgrade aws-sdk to a newer version."
-        end
 
         base.instance_eval do
           @s3_options     = @options[:s3_options]     || {}
@@ -159,11 +155,6 @@ def self.extended base
 
           @http_proxy = @options[:http_proxy] || nil
 
-          if @options.has_key?(:use_accelerate_endpoint) &&
-              Gem::Version.new(Aws::VERSION) < Gem::Version.new("2.3.0")
-            raise LoadError, ":use_accelerate_endpoint is only available from aws-sdk version 2.3.0. Please upgrade aws-sdk to a newer version."
-          end
-
           @use_accelerate_endpoint = @options[:use_accelerate_endpoint]
         end
 

paperclip.gemspec

@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rspec', '~> 3.0')
   s.add_development_dependency('appraisal')
   s.add_development_dependency('mocha')
-  s.add_development_dependency('aws-sdk', '>= 2.3.0', '< 3.0')
+  s.add_development_dependency('aws-sdk-s3')
   s.add_development_dependency('bourne')
   s.add_development_dependency('cucumber-rails')
   s.add_development_dependency('cucumber-expressions', '4.0.3') # TODO: investigate failures on 4.0.4

spec/paperclip/storage/s3_spec.rb

@@ -1,5 +1,5 @@
-require 'spec_helper'
-require 'aws-sdk'
+require "spec_helper"
+require "aws-sdk-s3"
 
 describe Paperclip::Storage::S3 do
   before do
@@ -237,7 +237,7 @@ def aws2_add_region
     end
   end
 
-  # if using aws-sdk-v2, the s3_host_name will be defined by the s3_region
+  # the s3_host_name will be defined by the s3_region
   context "s3_host_name" do
     before do
       rebuild_model storage: :s3,
@@ -282,7 +282,7 @@ class << @dummy
     end
   end
 
-  context "use_accelerate_endpoint", if: aws_accelerate_available? do
+  context "use_accelerate_endpoint" do
     context "defaults to false" do
       before do
         rebuild_model(
@@ -308,7 +308,7 @@ class << @dummy
       end
     end
 
-    context "set to true", if: aws_accelerate_available? do
+    context "set to true" do
       before do
         rebuild_model(
           storage: :s3,
@@ -793,7 +793,7 @@ def counter
     end
   end
 
-  # for aws-sdk-v2 the bucket.name is determined by the :s3_region
+  # the bucket.name is determined by the :s3_region
   context "Parsing S3 credentials with a s3_host_name in them" do
     before do
       rebuild_model storage: :s3,

spec/spec_helper.rb

@@ -39,7 +39,6 @@
   config.include TestData
   config.include Reporting
   config.extend VersionHelper
-  config.extend ConditionalFilterHelper
   config.mock_framework = :mocha
   config.before(:all) do
     rebuild_model