Add get_object_tagging and put_object_tagging Storage requests

lib/fog/aws/parsers/storage/get_object_tagging.rb

@@ -0,0 +1,33 @@
+module Fog
+  module Parsers
+    module AWS
+      module Storage
+        class GetObjectTagging < Fog::Parsers::Base
+          def reset
+            @in_tag = {}
+            @response = {'ObjectTagging' => {}}
+          end
+
+          def start_element(name, *args)
+            super
+            if name == 'Tag'
+              @in_tag = {}
+            end
+          end
+
+          def end_element(name)
+            case name
+            when 'Tag'
+              @response['ObjectTagging'].merge!(@in_tag)
+              @in_tag = {}
+            when 'Key'
+              @in_tag[value] = nil
+            when 'Value'
+              @in_tag = {@in_tag.keys.first => value}
+            end
+          end
+        end
+      end
+    end
+  end
+end

lib/fog/aws/requests/storage/get_object_tagging.rb

@@ -0,0 +1,41 @@
+module Fog
+  module AWS
+    class Storage
+      class Real
+        require 'fog/aws/parsers/storage/get_object_tagging'
+
+        # Get tags for an S3 object
+        #
+        # @param bucket_name [String] Name of bucket to read from
+        # @param object_name [String] Name of object to get tags for
+        #
+        # @return [Excon::Response] response:
+        #   * body [Hash]:
+        #     * ObjectTagging [Hash]:
+        #       * Key [String] - tag key
+        #       * Value [String] - tag value
+        # @see https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectTagging.html
+
+        def get_object_tagging(bucket_name, object_name)
+          unless bucket_name
+            raise ArgumentError.new('bucket_name is required')
+          end
+          unless object_name
+            raise ArgumentError.new('object_name is required')
+          end
+
+          request({
+            :expects => 200,
+            :headers => {},
+            :bucket_name => bucket_name,
+            :object_name => object_name,
+            :idempotent => true,
+            :method => 'GET',
+            :parser => Fog::Parsers::AWS::Storage::GetObjectTagging.new,
+            :query => {'tagging' => nil}
+          })
+        end
+      end
+    end
+  end
+end

lib/fog/aws/requests/storage/put_object_tagging.rb

@@ -0,0 +1,42 @@
+module Fog
+  module AWS
+    class Storage
+      class Real
+        # Change tag set for an S3 object
+        #
+        # @param bucket_name [String] Name of bucket to modify object in
+        # @param object_name [String] Name of object to modify
+        #
+        # @param tags [Hash]:
+        #   * Key [String]: tag key
+        #   * Value [String]: tag value
+        #
+        # @see https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObjectTagging.html
+
+        def put_object_tagging(bucket_name, object_name, tags)
+          tagging = tags.map do |k,v|
+            "<Tag><Key>#{k}</Key><Value>#{v}</Value></Tag>"
+          end.join("\n")
+          data =
+              <<-DATA
+<Tagging xmlns="http://doc.s3.amazonaws.com/2006-03-01" >
+  <TagSet>
+    #{tagging}
+  </TagSet>
+</Tagging>
+          DATA
+
+          request({
+            :body     => data,
+            :expects  => 200,
+            :headers  => {'Content-MD5' => Base64.encode64(OpenSSL::Digest::MD5.digest(data)).chomp!, 'Content-Type' => 'application/xml'},
+            :bucket_name => bucket_name,
+            :object_name => object_name,
+            :method   => 'PUT',
+            :query    => {'tagging' => nil}
+          })
+        end
+      end
+    end
+  end
+end

lib/fog/aws/storage.rb

@@ -84,6 +84,7 @@ module Fog
       request :get_object_http_url
       request :get_object_https_url
       request :get_object_url
+      request :get_object_tagging
       request :get_request_payment
       request :get_service
       request :head_bucket
@@ -107,6 +108,7 @@ module Fog
       request :put_object
       request :put_object_acl
       request :put_object_url
+      request :put_object_tagging
       request :put_request_payment
       request :sync_clock
       request :upload_part