Fix query serializaiton of empty lists. See: smithy-lang/smithy#1444

codegen/smithy-aws-ruby-codegen/src/main/java/software/amazon/smithy/aws/ruby/codegen/protocol/ec2/generators/BuilderGenerator.java

@@ -100,6 +100,9 @@ protected void renderListBuildMethod(ListShape shape) {
                                     dataName, "element", !shape.hasTrait(SparseTrait.class)));
                 })
                 .closeBlock("end")
+                .openBlock("\nif input.empty?")
+                .write("params[context[0...context.rindex('.')]] = ''")
+                .closeBlock("end")
                 .closeBlock("end");
 
     }

codegen/smithy-aws-ruby-codegen/src/main/java/software/amazon/smithy/aws/ruby/codegen/protocol/query/generators/BuilderGenerator.java

@@ -88,6 +88,9 @@ protected void renderListBuildMethod(ListShape shape) {
                                     dataName, "element", !shape.hasTrait(SparseTrait.class)));
                 })
                 .closeBlock("end")
+                .openBlock("\nif input.empty?")
+                .write("params[context[0...context.rindex('.')]] = ''")
+                .closeBlock("end")
                 .closeBlock("end");
 
     }

gems/aws-sdk-lambda/lib/aws-sdk-lambda/config.rb

@@ -9,7 +9,7 @@
 
 module AWS::SDK::Lambda
   # @!method initialize(*options)
-  #   @option args [AWS::SDK::Core::CredentialProvider] :credential_provider (*AWS::SDK::Core::CREDENTIAL_PROVIDER_CHAIN)
+  #   @option args [AWS::SDK::Core::CredentialProvider] :credential_provider
   #     A credential provider is a class that fetches your AWS credentials. This can be an instance
   #     of any one of the following classes:
   #
@@ -55,12 +55,18 @@ module AWS::SDK::Lambda
   #   @option args [Hearth::HTTP::Client] :http_client (Hearth::HTTP::Client.new)
   #     The HTTP Client to use for request transport.
   #
+  #   @option args [Hearth::InterceptorList] :interceptors (Hearth::InterceptorList.new)
+  #     A list of Interceptors to apply to the client.  Interceptors are a generic extension point that allows injecting logic at specific stages of execution within the SDK. Logic injection is done with hooks that the interceptor implements.  Hooks are either read-only or read/write. Read-only hooks allow an interceptor to read the input, transport request, transport response or output messages. Read/write hooks allow an interceptor to modify one of these messages.
+  #
   #   @option args [Symbol] :log_level (:info)
   #     The default log level to use with the Logger.
   #
   #   @option args [Logger] :logger (Logger.new($stdout, level: cfg.log_level))
   #     The Logger instance to use for logging.
   #
+  #   @option args [Hearth::PluginList] :plugins (Hearth::PluginList.new)
+  #     A list of Plugins to apply to the client. Plugins are callables that take one argument: Config.  Plugins may modify the provided config.
+  #
   #   @option args [String] :profile (default)
   #     The AWS region to connect to. The configured `:region` is
   #     used to determine the service `:endpoint`. When not passed,
@@ -105,12 +111,18 @@ module AWS::SDK::Lambda
   # @!attribute http_client
   #   @return [Hearth::HTTP::Client]
   #
+  # @!attribute interceptors
+  #   @return [Hearth::InterceptorList]
+  #
   # @!attribute log_level
   #   @return [Symbol]
   #
   # @!attribute logger
   #   @return [Logger]
   #
+  # @!attribute plugins
+  #   @return [Hearth::PluginList]
+  #
   # @!attribute profile
   #   @return [String]
   #
@@ -134,8 +146,10 @@ module AWS::SDK::Lambda
     :disable_host_prefix,
     :endpoint,
     :http_client,
+    :interceptors,
     :log_level,
     :logger,
+    :plugins,
     :profile,
     :region,
     :retry_strategy,
@@ -148,32 +162,36 @@ module AWS::SDK::Lambda
 
     private
 
-    def validate!
-      Hearth::Validator.validate_types!(credential_provider, AWS::SDK::Core::CredentialProvider, context: 'options[:credential_provider]')
-      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'options[:disable_host_prefix]')
-      Hearth::Validator.validate_types!(endpoint, String, context: 'options[:endpoint]')
-      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'options[:http_client]')
-      Hearth::Validator.validate_types!(log_level, Symbol, context: 'options[:log_level]')
-      Hearth::Validator.validate_types!(logger, Logger, context: 'options[:logger]')
-      Hearth::Validator.validate_types!(profile, String, context: 'options[:profile]')
-      Hearth::Validator.validate_types!(region, String, context: 'options[:region]')
-      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'options[:retry_strategy]')
-      Hearth::Validator.validate_types!(signer, AWS::SigV4::Signer, context: 'options[:signer]')
-      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'options[:stub_responses]')
-      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'options[:validate_input]')
+    def validate_types!
+      Hearth::Validator.validate_types!(credential_provider, AWS::SDK::Core::CredentialProvider, context: 'config[:credential_provider]')
+      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
+      Hearth::Validator.validate_types!(endpoint, String, context: 'config[:endpoint]')
+      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
+      Hearth::Validator.validate_types!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
+      Hearth::Validator.validate_types!(log_level, Symbol, context: 'config[:log_level]')
+      Hearth::Validator.validate_types!(logger, Logger, context: 'config[:logger]')
+      Hearth::Validator.validate_types!(plugins, Hearth::PluginList, context: 'config[:plugins]')
+      Hearth::Validator.validate_types!(profile, String, context: 'config[:profile]')
+      Hearth::Validator.validate_types!(region, String, context: 'config[:region]')
+      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
+      Hearth::Validator.validate_types!(signer, AWS::SigV4::Signer, context: 'config[:signer]')
+      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
+      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
     end
 
     def self.defaults
       @defaults ||= {
-        credential_provider: [*AWS::SDK::Core::CREDENTIAL_PROVIDER_CHAIN],
+        credential_provider: [proc { *AWS::SDK::Core::CREDENTIAL_PROVIDER_CHAIN }],
         disable_host_prefix: [false],
-        endpoint: [proc { |cfg| cfg[:stub_responses] ? 'http://localhost' : nil } ],
+        endpoint: [proc { |cfg| cfg[:stub_responses] ? 'http://localhost' : nil }],
         http_client: [proc { |cfg| Hearth::HTTP::Client.new(logger: cfg[:logger]) }],
+        interceptors: [proc { Hearth::InterceptorList.new }],
         log_level: [:info],
-        logger: [proc { |cfg| Logger.new($stdout, level: cfg[:log_level]) } ],
+        logger: [proc { |cfg| Logger.new($stdout, level: cfg[:log_level]) }],
+        plugins: [proc { Hearth::PluginList.new }],
         profile: [Hearth::Config::EnvProvider.new('AWS_PROFILE', type: 'String'),'default'],
         region: [Hearth::Config::EnvProvider.new('AWS_REGION', type: 'String'),AWS::SDK::Core::SharedConfigProvider.new('region', type: 'String')],
-        retry_strategy: [Hearth::Retry::Standard.new],
+        retry_strategy: [proc { Hearth::Retry::Standard.new }],
         signer: [proc { |cfg| AWS::SigV4::Signer.new(service: 'lambda', region: cfg[:region], credential_provider: cfg[:credential_provider]) }],
         stub_responses: [false],
         validate_input: [true]