refactor!: Simplify folder structure for meta provider

Signed-off-by: Max VelDink <[email protected]>

providers/openfeature-meta_provider/Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    openfeature-sdk-meta_provider (0.1.0)
+    openfeature-meta_provider (0.0.1)
       openfeature-sdk (~> 0.3.0)
 
 GEM
@@ -86,7 +86,7 @@ PLATFORMS
 
 DEPENDENCIES
   debug (~> 1.9.2)
-  openfeature-sdk-meta_provider!
+  openfeature-meta_provider!
   rake (~> 13.0)
   rspec (~> 3.12)
   standard (~> 1.34)

providers/openfeature-meta_provider/lib/openfeature/meta_provider.rb

@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+module OpenFeature
+  # Used to pull from multiple providers.
+  class MetaProvider
+    # @param providers [Array<Provider>]
+    # @param strategy [Symbol] When `:first_match`, returns first matched resolution. Providers will be searched
+    #                          in the order they were given. Defaults to `:first_match`.
+    def initialize(providers:, strategy: :first_match)
+      @providers = providers
+      @strategy = strategy
+    end
+
+    def metadata
+      SDK::Provider::ProviderMetadata.new(name: "MetaProvider: #{providers.map { |provider| provider.metadata.name }.join(", ")}")
+    end
+
+    def init
+      providers.each { |provider| provider.init }
+    end
+
+    def shutdown
+      providers.each(&:shutdown)
+    end
+
+    def fetch_boolean_value(flag_key:, default_value:, evaluation_context: nil)
+      fetch_from_sources(default_value:) do |provider|
+        provider.fetch_boolean_value(flag_key:, default_value:, evaluation_context:)
+      end
+    end
+
+    def fetch_number_value(flag_key:, default_value:, evaluation_context: nil)
+      fetch_from_sources(default_value:) do |provider|
+        provider.fetch_number_value(flag_key:, default_value:, evaluation_context:)
+      end
+    end
+
+    def fetch_object_value(flag_key:, default_value:, evaluation_context: nil)
+      fetch_from_sources(default_value:) do |provider|
+        provider.fetch_object_value(flag_key:, default_value:, evaluation_context:)
+      end
+    end
+
+    def fetch_string_value(flag_key:, default_value:, evaluation_context: nil)
+      fetch_from_sources(default_value:) do |provider|
+        provider.fetch_string_value(flag_key:, default_value:, evaluation_context:)
+      end
+    end
+
+    private
+
+    attr_reader :providers, :strategy
+
+    def fetch_from_sources(default_value:, &blk)
+      case strategy
+      when :first_match
+        successful_details = providers.each do |provider|
+          details = yield(provider)
+
+          break details if details.error_code.nil?
+        rescue
+          next
+        end
+
+        if successful_details.is_a?(SDK::Provider::ResolutionDetails)
+          successful_details
+        else
+          SDK::Provider::ResolutionDetails.new(value: default_value, error_code: SDK::Provider::ErrorCode::GENERAL, reason: SDK::Provider::Reason::ERROR)
+        end
+      else
+        SDK::Provider::ResolutionDetails.new(value: default_value, error_code: SDK::Provider::ErrorCode::GENERAL, reason: "Unknown strategy for MetaProvider")
+      end
+    end
+  end
+end

providers/openfeature-meta_provider/lib/openfeature/meta_provider_version.rb

@@ -0,0 +1,3 @@
+module OpenFeature
+  META_PROVIDER_VERSION = "0.0.1"
+end

providers/openfeature-meta_provider/openfeature-meta_provider.gemspec

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
-require_relative "lib/open_feature/sdk/provider/version"
+require_relative "lib/openfeature/meta_provider_version"
 
 Gem::Specification.new do |spec|
   spec.name = "openfeature-meta_provider"
-  spec.version = OpenFeature::SDK::Provider::VERSION
+  spec.version = OpenFeature::META_PROVIDER_VERSION
   spec.authors = ["OpenFeature Authors"]
   spec.email = ["[email protected]"]
 

providers/openfeature-meta_provider/spec/open_feature/sdk/provider/meta_provider_spec.rb → providers/openfeature-meta_provider/spec/openfeature/meta_provider_spec.rb

@@ -48,7 +48,7 @@
   end
 end
 
-RSpec.describe OpenFeature::SDK::Provider::MetaProvider do
+RSpec.describe OpenFeature::MetaProvider do
   subject(:meta_provider) { described_class.new(providers: [provider_one, provider_two]) }
 
   let(:provider_one) do

providers/openfeature-meta_provider/spec/spec_helper.rb

@@ -2,7 +2,7 @@
 
 require "bundler/setup"
 require "debug"
-require "open_feature/sdk/provider/meta_provider"
+require "openfeature/meta_provider"
 require "open_feature/sdk"
 
 RSpec.configure do |config|

release-please-config.json

@@ -7,15 +7,19 @@
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "versioning": "default",
-      "extra-files": ["README.md"]
+      "extra-files": [
+        "README.md"
+      ]
     },
     "providers/openfeature-meta_provider": {
       "package-name": "openfeature-meta_provider",
-      "version-file": "lib/open_feature/sdk/provider/version.rb",
+      "version-file": "lib/openfeature/meta_provider_version.rb",
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "versioning": "default",
-      "extra-files": ["README.md"]
+      "extra-files": [
+        "README.md"
+      ]
     }
   },
   "changelog-sections": [