WIP

components/services/app.rb

@@ -38,7 +38,7 @@ def process
     def handle_ecs_event(event)
       case event.group
       when ENV.fetch("SWITCH_GROUP")
-        HandleSwitchEvent.call(event:, regions: SomlengRegions.regions)
+        HandleSwitchEvent.call(event:, regions: SomlengRegion::Region)
       when ENV.fetch("MEDIA_PROXY_GROUP")
         HandleMediaProxyEvent.call(event:)
       when ENV.fetch("CLIENT_GATEWAY_GROUP")

components/services/config/initializers/somleng_regions.rb → components/services/config/initializers/somleng_region.rb

@@ -1,6 +1,6 @@
 require "json"
 
-SomlengRegions.configure do |config|
+SomlengRegion.configure do |config|
   config.region_data = AppSettings.fetch(:region_data)
   config.stub_regions = AppSettings.fetch(:stub_regions)
 end

components/services/lib/somleng_region.rb

@@ -0,0 +1,17 @@
+
+module SomlengRegion
+  class << self
+    def configure
+      yield(configuration)
+      configuration
+    end
+
+    def configuration
+      @configuration ||= Configuration.new
+    end
+    alias config configuration
+  end
+end
+
+require_relative "somleng_region/configuration"
+require_relative "somleng_region/region"

components/services/lib/somleng_regions/configuration.rb → components/services/lib/somleng_region/configuration.rb

@@ -1,4 +1,4 @@
-module SomlengRegions
+module SomlengRegion
   class Configuration
     attr_accessor :region_data, :stub_regions
   end

components/services/lib/somleng_region/region.rb

@@ -0,0 +1,48 @@
+require "ostruct"
+
+module SomlengRegion
+  class Region < OpenStruct
+    class RegionNotFound < StandardError; end
+
+    MOCK_REGIONS = [
+      new(
+        identifier: "ap-southeast-1",
+        alias: "hydrogen",
+        group_id: 1,
+        human_name: "South East Asia (Singapore)"
+      ),
+      new(
+        identifier: "us-east-1",
+        alias: "helium",
+        group_id: 2,
+        human_name: "North America (Virginia, US)"
+      )
+    ]
+
+    class << self
+      def all
+        collection
+      end
+
+      def find_by(attributes)
+        collection.find do |region|
+          attributes.all? { |key, value| region[key] == value }
+        end
+      end
+
+      def find_by!(*)
+        find_by(*) || raise(RegionNotFound.new)
+      end
+
+      private
+
+      def collection
+        @collection ||= config.stub_regions ? MOCK_REGIONS : config.region_data.map { |region| new(region) }
+      end
+
+      def config
+        SomlengRegion.configuration
+      end
+    end
+  end
+end