Reapply "Reduce memory usage from aws-partitions (#3122)"

This reverts commit c1c38b4.

build_tools/aws-sdk-code-generator/lib/aws-sdk-code-generator.rb

@@ -12,6 +12,7 @@
 require_relative 'aws-sdk-code-generator/client_response_structure_example'
 require_relative 'aws-sdk-code-generator/crosslink'
 require_relative 'aws-sdk-code-generator/docstring'
+require_relative 'aws-sdk-code-generator/endpoint_parameter'
 require_relative 'aws-sdk-code-generator/hash_formatter'
 require_relative 'aws-sdk-code-generator/helper'
 require_relative 'aws-sdk-code-generator/plugin_list'

build_tools/aws-sdk-code-generator/lib/aws-sdk-code-generator/endpoint_parameter.rb

@@ -0,0 +1,190 @@
+# frozen_string_literal: true
+
+module AwsSdkCodeGenerator
+  class EndpointParameter
+    def initialize(name, definition, service, operation=nil)
+      @name = name
+
+      @value, @source = endpoint_parameter_value(name, definition, service, operation)
+
+      @type = definition['type']
+      @built_in = definition['builtIn']
+      @default = definition['default']
+      @required = definition['required']
+      @documentation = "# @!attribute #{key}\n"
+      if definition['documentation']
+        @documentation += "  #   #{definition['documentation']}\n"
+      end
+      if deprecated = definition['deprecated']
+        @documentation += "  #\n  #   @deprecated\n"
+        if deprecated['message']
+          @documentation += "  #     #{deprecated['message']}\n"
+        end
+        if deprecated['since']
+          @documentation += "  #     Since: #{deprecated['since']}\n"
+        end
+      end
+      @documentation += "  #\n  #   @return [#{@type}]\n  #"
+    end
+
+    # @return [String]
+    attr_reader :name
+
+    # @return [String]
+    attr_reader :documentation
+
+    # @return [Boolean]
+    attr_reader :required
+
+    # @return [String]
+    attr_reader :source
+
+    # @return [String]
+    attr_reader :value
+
+    # @return [String,Boolean,Array]
+    def default
+      case @default
+      when String
+        "\"#{@default}\""
+      else
+        @default.to_s
+      end
+    end
+
+    def default?
+      !@default.nil?
+    end
+
+    def validate_required?
+      required && !default?
+    end
+
+    def key
+      Underscore.underscore(name)
+    end
+
+    private
+
+    # Most to least
+    # staticContextParams
+    # contextParam
+    # operationContextParams
+    # clientContextParams (always sourced from config)
+    # Built-In Bindings (sourced from config in most cases, context in some cases to allow operation level overrides)
+    # Built-in binding default values
+    # @retyrn [value, source].  source may be one of [operation, config, default]
+    def endpoint_parameter_value(param_name, param_data, service, operation)
+      unless operation.nil?
+        value, source = [
+          static_context_param(operation, param_name), 'operation'
+        ]
+        value, source = [
+          context_param_value(service, operation, param_name), 'operation'
+        ] unless value
+        value, source = [
+          operation_context_param_value(operation, param_name), 'operation'
+        ] unless value
+      end
+
+      value, source = [
+        client_context_param_value(service, param_name, param_data),
+        'config'
+      ] unless value
+
+
+      # built-ins may be sourced from operation context in some cases
+      unless value
+        value, source = built_in_param_value(service, param_data)
+      end
+
+      [value || 'nil', source || 'default']
+    end
+
+    def client_context_param_value(service, param_name, param_data)
+      if service.api['clientContextParams']&.key?(param_name) &&
+        !param_data['builtIn']
+        "config.#{Underscore.underscore(param_name)}"
+      end
+    end
+
+    # built-ins may be sourced from operation context in some cases
+    def built_in_param_value(service, param_data)
+      source = 'config'
+      value =
+        case param_data['builtIn']
+        when 'AWS::Region'
+          'config.region'
+        when 'AWS::UseFIPS'
+          'config.use_fips_endpoint'
+        when 'AWS::UseDualStack'
+          if service.name == 'S3' || service.name == 'S3Control'
+            source = 'operation'
+            'context[:use_dualstack_endpoint]'
+          else
+            'config.use_dualstack_endpoint'
+          end
+        when 'AWS::Auth::AccountId'
+          'config.credentials.credentials.account_id'
+        when 'AWS::Auth::AccountIdEndpointMode'
+          'config.account_id_endpoint_mode'
+        when 'AWS::STS::UseGlobalEndpoint'
+          "config.sts_regional_endpoints == 'legacy'"
+        when 'AWS::S3::UseGlobalEndpoint'
+          "config.s3_us_east_1_regional_endpoint == 'legacy'"
+        when 'AWS::S3::Accelerate'
+          if service.name == 'S3' || service.name == 'S3Control'
+            source = 'operation'
+            'context[:use_accelerate_endpoint]'
+          else
+            'config.use_accelerate_endpoint'
+          end
+        when 'AWS::S3::ForcePathStyle'
+          'config.force_path_style'
+        when 'AWS::S3::UseArnRegion', 'AWS::S3Control::UseArnRegion'
+          'config.s3_use_arn_region'
+        when 'AWS::S3::DisableMultiRegionAccessPoints'
+          'config.s3_disable_multiregion_access_points'
+        when 'SDK::Endpoint'
+          '(config.endpoint.to_s unless config.regional_endpoint)'
+        else
+          source = nil
+          nil # no value, not a default
+        end
+      [value, source]
+    end
+
+    def context_param_value(service, operation, param_name)
+      return nil unless operation['input']
+
+      input_shape = operation['input']['shape']
+      members = service.api['shapes'][input_shape].fetch('members', {})
+      members.detect do |(member_name, member)|
+        context_param = member.fetch('contextParam', {})
+        if context_param.fetch('name', nil) == param_name
+          break "context.params[:#{Underscore.underscore(member_name)}]"
+        end
+      end
+    end
+
+    def operation_context_param_value(operation, param_name)
+      return nil unless operation['input']
+
+      binding = operation.fetch('operationContextParams', {})[param_name]
+
+      return nil unless binding
+
+      "JMESPath.search(\"#{Underscore.underscore_jmespath(binding['path'])}\", context.params)"
+    end
+
+    def static_context_param(operation, param_name)
+      value = operation.fetch('staticContextParams', {})
+               .fetch(param_name, {}).fetch('value', nil)
+      if !value.nil? && value.is_a?(String)
+        "\"#{value}\""
+      else
+        value
+      end
+    end
+  end
+end

build_tools/aws-sdk-code-generator/lib/aws-sdk-code-generator/views/endpoint_parameters_class.rb

@@ -9,14 +9,19 @@ def initialize(options)
         @service = options.fetch(:service)
         if (parameters = @service.endpoint_rules&.fetch('parameters'))
           @parameters = parameters.map do |k,p|
-            EndpointParameter.new(k, p)
+            EndpointParameter.new(k, p, @service)
           end
         end
       end
 
       # @return [Array<EndpointParameter>]
       attr_reader :parameters
 
+      # @return [Array<EndpointParameter>]
+      def config_parameters
+        parameters.select { |p| p.source == 'config' }
+      end
+
       # @return [String|nil]
       def generated_src_warning
         return if @service.protocol == 'api-gateway'
@@ -26,58 +31,6 @@ def generated_src_warning
       def module_name
         @service.module_name
       end
-
-      class EndpointParameter
-        def initialize(name, definition={})
-          @name = name
-          @type = definition['type']
-          @built_in = definition['builtIn']
-          @default = definition['default']
-          @required = definition['required']
-          @documentation = "# @!attribute #{underscore_name}\n"
-          if definition['documentation']
-            @documentation += "  #   #{definition['documentation']}\n"
-          end
-          if deprecated = definition['deprecated']
-            @documentation += "  #\n  #   @deprecated\n"
-            if deprecated['message']
-              @documentation += "  #     #{deprecated['message']}\n"
-            end
-            if deprecated['since']
-              @documentation += "  #     Since: #{deprecated['since']}\n"
-            end
-          end
-          @documentation += "  #\n  #   @return [#{@type}]\n  #"
-        end
-
-        # @return [String]
-        attr_reader :name
-
-        # @return [String]
-        attr_reader :documentation
-
-        # @return [Boolean]
-        attr_reader :required
-
-        # @return [String,Boolean,Array]
-        def default
-          case @default
-          when String
-            "\"#{@default}\""
-          else
-            @default.to_s
-          end
-        end
-
-        def default?
-          !@default.nil?
-        end
-
-        def underscore_name
-          Underscore.underscore(name)
-        end
-      end
-
     end
   end
 end