switch aws client libraries

app/models/amazon_backup.rb

@@ -14,25 +14,28 @@ class AmazonBackup < ActiveRecord::Base
 
   def self.execute
     last_id = AmazonBackup.last_id
+    credentials = Aws::Credentials.new(Danbooru.config.amazon_s3_access_key_id, Danbooru.config.amazon_s3_secret_access_key)
+    client = Aws::S3::Client.new(region: "us-west-2", credentials: credentials)
+    bucket = Danbooru.config.amazon_s3_bucket_name
 
     Post.where("id > ?", last_id).limit(1000).order("id").each do |post|
-      AWS::S3::Base.establish_connection!(
-        :access_key_id => Danbooru.config.amazon_s3_access_key_id,
-        :secret_access_key => Danbooru.config.amazon_s3_secret_access_key,
-        :server => "s3.amazonaws.com"
-      )
-
       if File.exists?(post.file_path)
         base64_md5 = Base64.encode64(Digest::MD5.digest(File.read(post.file_path)))
-        AWS::S3::S3Object.store(File.basename(post.file_path), open(post.file_path, "rb"), Danbooru.config.amazon_s3_bucket_name, "Content-MD5" => base64_md5)
+        key = File.basename(post.file_path)
+        body = open(post.file_path, "rb")
+        client.put_object(bucket: bucket, key: key, body: body, content_md5: base64_md5)
       end
 
       if post.has_preview? && File.exists?(post.preview_file_path)
-        AWS::S3::S3Object.store("preview/#{post.md5}.jpg", open(post.preview_file_path, "rb"), Danbooru.config.amazon_s3_bucket_name)
+        key = "preview/#{post.md5}.jpg"
+        body = open(post.preview_file_path, "rb")
+        client.put_object(bucket: bucket, key: key, body: body)
       end
 
       if File.exists?(post.large_file_path)
-        AWS::S3::S3Object.store("large/#{post.md5}.#{post.large_file_ext}", open(post.large_file_path, "rb"), Danbooru.config.amazon_s3_bucket_name)
+        key = "large/#{post.md5}.#{post.large_file_ext}"
+        body = open(post.large_file_path, "rb")
+        client.put_object(bucket: bucket, key: key, body: body)
       end
 
       AmazonBackup.update_id(post.id)