Fix error when attempting to format an unlinked tempfile (#3164)

gems/aws-sdk-core/CHANGELOG.md

@@ -1,6 +1,8 @@
 Unreleased Changes
 ------------------
 
+* Issue - Fixed error when attempting to log an unlinked tempfile.
+
 3.215.0 (2025-01-10)
 ------------------
 

gems/aws-sdk-core/lib/aws-sdk-core/log/param_formatter.rb

@@ -51,13 +51,17 @@ def summarize_value(value)
         when String   then summarize_string(value)
         when Hash     then '{' + summarize_hash(value) + '}'
         when Array    then summarize_array(value)
-        when File     then summarize_file(value.path)
-        when Pathname then summarize_file(value)
+        when File     then summarize_file(value)
+        when Pathname then summarize_filepath(value)
         else value.inspect
         end
       end
 
-      def summarize_file(path)
+      def summarize_file(file)
+        "#<File:#{file.path} (#{file.size} bytes)>"
+      end
+
+      def summarize_filepath(path)
         "#<File:#{path} (#{File.size(path)} bytes)>"
       end
 

gems/aws-sdk-core/spec/aws/log/formatter_spec.rb

@@ -34,6 +34,13 @@ def format(pattern, options = {})
         end
 
         it 'provides a :request_params replacement' do
+          file = Tempfile.create
+          # This is not available on windows, see:
+          # - https://docs.ruby-lang.org/en/3.4/Tempfile.html#class-Tempfile-label-Unlink+after+creation
+          # - https://github.com/aws/aws-sdk-ruby/issues/3163
+          File.unlink(file.path) unless RUBY_DESCRIPTION.match?(/mswin|ming|cygwin/)
+          file.write('foo=bar')
+
           response.context.params = {
             foo: 'bar',
             attributes: {
@@ -43,15 +50,19 @@ def format(pattern, options = {})
             config: {
               nested: true,
               path: Pathname.new(__FILE__),
+              tmpfile: file,
               complex: double('obj', inspect: '"inspected"')
             },
-            huge: '-' * 1000
+            huge: '-' * 1000,
+            list: ['one', 'two']
           }
           formatted = format('{:request_params}', max_string_size: 20)
           size = File.size(__FILE__)
           expect(formatted).to eq(<<-FORMATTED.strip)
-{foo:"bar",attributes:{"color"=>"red","size"=>"large"},config:{nested:true,path:#<File:#{__FILE__} (#{size} bytes)>,complex:"inspected"},huge:#<String "--------------------" ... (1000 bytes)>}
+{foo:"bar",attributes:{"color"=>"red","size"=>"large"},config:{nested:true,path:#<File:#{__FILE__} (#{size} bytes)>,tmpfile:#<File:#{file.path} (#{file.size} bytes)>,complex:"inspected"},huge:#<String "--------------------" ... (1000 bytes)>,list:["one","two"]}
           FORMATTED
+        ensure
+          file.close
         end
 
         it 'provides a :time replacement' do