fix!: Return disabled config if no defaultValue is provided

.github/workflows/ci.yml

@@ -16,9 +16,9 @@ jobs:
     strategy:
       matrix:
         ruby-version:
-          - '3.0'
           - '3.1'
           - '3.2'
+          - '3.4'
           - jruby-9.4
 
     steps:
@@ -43,7 +43,7 @@ jobs:
 
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0
+          ruby-version: 3.2
 
       - name: Install dependencies
         run: bundle install

.github/workflows/manual-publish-docs.yml

@@ -13,7 +13,7 @@ jobs:
 
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0
+          ruby-version: 3.1
 
       - uses: ./.github/actions/build-docs
 

.github/workflows/publish.yml

@@ -40,7 +40,7 @@ jobs:
         name: Build and Test
         uses: ./.github/actions/ci
         with:
-          ruby-version: 3.0
+          ruby-version: 3.1
 
       - id: build-docs
         name: Build docs

.rubocop.yml

@@ -4,7 +4,7 @@ plugins:
   - rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: 3.0
+  TargetRubyVersion: 3.1
   Include:
     - lib/**/*.rb
     - spec/**/*.rb

README.md

@@ -27,7 +27,7 @@ LaunchDarkly overview
 Supported Ruby versions
 -----------------------
 
-This version of the library has a minimum Ruby version of 3.0.0, or 9.4.0 for JRuby.
+This version of the library has a minimum Ruby version of 3.1.0, or 9.4.0 for JRuby.
 
 Getting started
 -----------

examples/chatbot/README.md

@@ -4,7 +4,7 @@ We've built a simple console application that demonstrates how LaunchDarkly's Ru
 
 Below, you'll find the build procedure. For more comprehensive instructions, you can visit your [Quickstart page](https://docs.launchdarkly.com/home/ai-configs/quickstart) or the [Ruby reference guide](https://docs.launchdarkly.com/sdk/ai/ruby).
 
-This demo requires Ruby 3.0 or higher.
+This demo requires Ruby 3.1 or higher.
 
 ## Build Instructions
 

examples/chatbot/aws-bedrock/Gemfile

@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-ruby '>= 3.0.0'
+ruby '>= 3.1.0'
 
 gem 'aws-sdk-bedrockruntime', '~> 1.0'
 gem 'launchdarkly-server-sdk-ai', path: '../../..'

examples/chatbot/aws-bedrock/hello_bedrock.rb

@@ -7,7 +7,7 @@
 # Set sdk_key to your LaunchDarkly SDK key.
 sdk_key = ENV['LAUNCHDARKLY_SDK_KEY']
 
-# Set config_key to the AI Config key you want to evaluate.
+# Set key to the AI Config key you want to evaluate.
 ai_config_key = ENV['LAUNCHDARKLY_AI_CONFIG_KEY'] || 'sample-ai-config'
 
 region = ENV['AWS_REGION'] || 'us-east-1'
@@ -87,26 +87,16 @@ def map_converse_arguments(model_id, messages)
   region: region
 )
 
-
-DEFAULT_VALUE = LaunchDarkly::Server::AI::AIConfig.new(
-  enabled: true,
-  model: LaunchDarkly::Server::AI::ModelConfig.new(name: 'replace-with-your-model'),
-  messages: [
-    LaunchDarkly::Server::AI::Message.new('system',
-      'You are the backup assistant when something prevents retrieving LaunchDarkly configured assistant. You have the persona of HAL 9000 talking with {{ldctx.name}}'),
-  ]
-)
-
-# You can also default to disabled if you are unable to connect to LaunchDarkly services.
-# DEFAULT_VALUE = LaunchDarkly::Server::AI::AIConfig.new(
-#   enabled: false
-# )
-
-ai_config = ai_client.completion_config(
-  ai_config_key,
-  context,
-  DEFAULT_VALUE
-)
+# Pass a default for improved resiliency when the flag is unavailable or LaunchDarkly is unreachable; omit for a disabled default.
+# Example:
+#   default = LaunchDarkly::Server::AI::AIConfig.new(
+#     enabled: true,
+#     model: LaunchDarkly::Server::AI::ModelConfig.new(name: 'my-model'),
+#     provider: LaunchDarkly::Server::AI::ProviderConfig.new(name: 'my-provider'),
+#     messages: [LaunchDarkly::Server::AI::Message.new('system', 'Fallback system prompt')]
+#   )
+#   ai_config = ai_client.completion_config(key: ai_config_key, context:, default:)
+ai_config = ai_client.completion_config(key: ai_config_key, context:)
 
 unless ai_config.enabled
   puts '*** AI features are disabled'

examples/chatbot/openai/Gemfile

@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-ruby '>= 3.0.0'
+ruby '>= 3.1.0'
 
 gem 'launchdarkly-server-sdk-ai', path: '../../..'
 gem 'openai', '~> 0.7.0'

examples/chatbot/openai/hello_openai.rb

@@ -7,7 +7,7 @@
 # Set sdk_key to your LaunchDarkly SDK key.
 sdk_key = ENV['LAUNCHDARKLY_SDK_KEY']
 
-# Set config_key to the AI Config key you want to evaluate.
+# Set key to the AI Config key you want to evaluate.
 ai_config_key = ENV['LAUNCHDARKLY_AI_CONFIG_KEY'] || 'sample-ai-config'
 
 # Set openai_api_key to your OpenAI API key.
@@ -58,19 +58,6 @@ def agent_was_helpful(helpful)
   end
 end
 
-DEFAULT_VALUE = LaunchDarkly::Server::AI::AIConfig.new(
-  enabled: true,
-  model: LaunchDarkly::Server::AI::ModelConfig.new(name: 'replace-with-your-model'),
-  messages: [
-    LaunchDarkly::Server::AI::Message.new('system',
-      'You are the backup assistant when something prevents retrieving LaunchDarkly configured assistant. You have the persona of HAL 9000 talking with {{ldctx.name}}'),
-  ]
-)
-
-# You can also default to disabled if you are unable to connect to LaunchDarkly services.
-# DEFAULT_VALUE = LaunchDarkly::Server::AI::AIConfig.new(
-#   enabled: false
-# )
 
 ld_client = LaunchDarkly::LDClient.new(sdk_key)
 ai_client = LaunchDarkly::Server::AI::Client.new(ld_client)
@@ -89,11 +76,16 @@ def agent_was_helpful(helpful)
                                             name: 'Lucy',
                                           })
 
-ai_config = ai_client.completion_config(
-  ai_config_key,
-  context,
-  DEFAULT_VALUE
-)
+# Pass a default for improved resiliency when the flag is unavailable or LaunchDarkly is unreachable; omit for a disabled default.
+# Example:
+#   default = LaunchDarkly::Server::AI::AIConfig.new(
+#     enabled: true,
+#     model: LaunchDarkly::Server::AI::ModelConfig.new(name: 'my-model'),
+#     provider: LaunchDarkly::Server::AI::ProviderConfig.new(name: 'my-provider'),
+#     messages: [LaunchDarkly::Server::AI::Message.new('system', 'Fallback system prompt')]
+#   )
+#   ai_config = ai_client.completion_config(key: ai_config_key, context:, default:)
+ai_config = ai_client.completion_config(key: ai_config_key, context:)
 
 unless ai_config.enabled
   puts '*** AI features are disabled'

launchdarkly-server-sdk-ai.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.files = Dir['{lib}/**/*.rb', 'bin/*', 'LICENSE', '*.md']
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
-  spec.required_ruby_version = '>= 3.0.0'
+  spec.required_ruby_version = '>= 3.1.0'
 
   spec.add_dependency 'launchdarkly-server-sdk', '~> 8.5'
   spec.add_dependency 'logger'

lib/server/ai/client.rb

@@ -113,6 +113,15 @@ def initialize(enabled: nil, model: nil, messages: nil, tracker: nil, provider:
           @provider = provider
         end
 
+        #
+        # Returns a new disabled AIConfig instance.
+        #
+        # @return [AIConfig] a new disabled config
+        #
+        def self.disabled
+          new(enabled: false)
+        end
+
         def to_h
           {
             _ldMeta: {
@@ -161,31 +170,31 @@ def initialize(ld_client)
         #
         # Retrieves the AIConfig
         #
-        # @param config_key [String] The key of the configuration flag
+        # @param key [String] The key of the configuration flag
         # @param context [LDContext] The context used when evaluating the flag
-        # @param default_value [AIConfig] The default value to use if the flag is not found
+        # @param default [AIConfig] The default value to use if the flag is not found
         # @param variables [Hash] Optional variables for rendering messages
         # @return [AIConfig] An AIConfig instance containing the configuration data
         #
-        def completion_config(config_key, context, default_value = nil, variables = nil)
-          @ld_client.track(TRACK_USAGE_COMPLETION_CONFIG, context, config_key, 1)
+        def completion_config(key:, context:, default: nil, variables: nil)
+          @ld_client.track(TRACK_USAGE_COMPLETION_CONFIG, context, key, 1)
 
-          _completion_config(config_key, context, default_value, variables)
+          _completion_config(key:, context:, default: default || AIConfig.disabled, variables:)
         end
 
         # @deprecated Use {#completion_config} instead.
-        def config(config_key, context, default_value = nil, variables = nil)
+        def config(key:, context:, default: nil, variables: nil)
           warn '[DEPRECATION] `config` is deprecated. Use `completion_config` instead.'
-          completion_config(config_key, context, default_value, variables)
+          completion_config(key:, context:, default:, variables:)
         end
 
         private
 
-        def _completion_config(config_key, context, default_value = nil, variables = nil)
+        def _completion_config(key:, context:, default:, variables: nil)
           variation = @ld_client.variation(
-            config_key,
+            key,
             context,
-            default_value.respond_to?(:to_h) ? default_value.to_h : nil
+            default.respond_to?(:to_h) ? default.to_h : nil
           )
 
           all_variables = variables ? variables.dup : {}
@@ -220,18 +229,18 @@ def _completion_config(config_key, context, default_value = nil, variables = nil
           tracker = LaunchDarkly::Server::AI::AIConfigTracker.new(
             ld_client: @ld_client,
             variation_key: variation.dig(:_ldMeta, :variationKey) || '',
-            config_key: config_key,
+            config_key: key,
             version: variation.dig(:_ldMeta, :version) || 1,
             model_name: model&.name || '',
             provider_name: provider_config&.name || '',
-            context: context
+            context:
           )
 
           AIConfig.new(
             enabled: variation.dig(:_ldMeta, :enabled) || false,
-            messages: messages,
-            tracker: tracker,
-            model: model,
+            messages:,
+            tracker:,
+            model:,
             provider: provider_config
           )
         end