feat: add OpenFeature Remote Evaluation Protocol (OFREP) Provider (#428)

Signed-off-by: Weyert de Boer <[email protected]>
Signed-off-by: Weyert de Boer <[email protected]>
Signed-off-by: André Silva <[email protected]>
Signed-off-by: Todd Baert <[email protected]>
Signed-off-by: Kyle Julian <[email protected]>
Signed-off-by: Piotr Kiełkowicz <[email protected]>
Signed-off-by: Mark Johnson <[email protected]>
Signed-off-by: OpenFeature Bot <[email protected]>
Signed-off-by: Michael Beemer <[email protected]>
Signed-off-by: James Thompson <[email protected]>
Signed-off-by: Weyert de Boer <[email protected]>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: André Silva <[email protected]>
Co-authored-by: Michael Beemer <[email protected]>
Co-authored-by: ericpattison <[email protected]>
Co-authored-by: Kyle <[email protected]>
Co-authored-by: Todd Baert <[email protected]>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Piotr Kiełkowicz <[email protected]>
Co-authored-by: Mark Johnson <[email protected]>
Co-authored-by: OpenFeature Bot <[email protected]>
Co-authored-by: James Thompson <[email protected]>

Author: 12 people

.gitignore

@@ -348,3 +348,6 @@ ASALocalRun/
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+
+# asdf version manager
+.tool-versions

.release-please-manifest.json

@@ -7,5 +7,6 @@
   "src/OpenFeature.Contrib.Providers.FeatureManagement": "0.1.1",
   "src/OpenFeature.Contrib.Providers.Statsig": "0.1.0",
   "src/OpenFeature.Contrib.Providers.Flipt": "0.0.5",
-  "src/OpenFeature.Contrib.Providers.EnvVar": "0.0.7"
+  "src/OpenFeature.Contrib.Providers.EnvVar": "0.0.7",
+  "src/OpenFeature.Providers.Ofrep": "0.0.1"
 }

DotnetSdkContrib.slnx

@@ -9,6 +9,7 @@
     <Project Path="src/OpenFeature.Contrib.Providers.Flipt/OpenFeature.Contrib.Providers.Flipt.csproj" />
     <Project Path="src/OpenFeature.Contrib.Providers.GOFeatureFlag/OpenFeature.Contrib.Providers.GOFeatureFlag.csproj" />
     <Project Path="src/OpenFeature.Contrib.Providers.Statsig/OpenFeature.Contrib.Providers.Statsig.csproj" />
+    <Project Path="src/OpenFeature.Providers.Ofrep/OpenFeature.Providers.Ofrep.csproj" />
   </Folder>
   <Folder Name="/test/">
     <Project Path="test/OpenFeature.Contrib.Hooks.Otel.Test/OpenFeature.Contrib.Hooks.Otel.Test.csproj" />
@@ -23,5 +24,6 @@
     <Project Path="test/OpenFeature.Contrib.Providers.Flipt.Test/OpenFeature.Contrib.Providers.Flipt.Test.csproj" />
     <Project Path="test/OpenFeature.Contrib.Providers.GOFeatureFlag.Test/OpenFeature.Contrib.Providers.GOFeatureFlag.Test.csproj" />
     <Project Path="test/OpenFeature.Contrib.Providers.Statsig.Test/OpenFeature.Contrib.Providers.Statsig.Test.csproj" />
+    <Project Path="test/OpenFeature.Providers.Ofrep.Test/OpenFeature.Providers.Ofrep.Test.csproj" />
   </Folder>
 </Solution>

release-please-config.json

@@ -93,6 +93,16 @@
       "extra-files": [
         "OpenFeature.Contrib.Providers.EnvVar.csproj"
       ]
+    },
+    "src/OpenFeature.Providers.Ofrep": {
+      "package-name": "OpenFeature.Providers.Ofrep",
+      "release-type": "simple",
+      "bump-minor-pre-major": true,
+      "bump-patch-for-minor-pre-major": true,
+      "versioning": "default",
+      "extra-files": [
+        "OpenFeature.Providers.Ofrep.csproj"
+      ]
     }
   },
   "changelog-sections": [
@@ -150,4 +160,4 @@
     }
   ],
   "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
-}
+}

src/OpenFeature.Providers.Ofrep/Client/Constants/ErrorCodes.cs

@@ -0,0 +1,15 @@
+namespace OpenFeature.Providers.Ofrep.Client.Constants;
+
+internal static class ErrorCodes
+{
+    // Error codes
+    internal const string ProviderNotReady = "provider_not_ready";
+    internal const string ParseError = "parse_error";
+    internal const string GeneralError = "general_error";
+    internal const string FlagNotFound = "flag_not_found";
+    internal const string TypeMismatch = "type_mismatch";
+    internal const string General = "general";
+    internal const string InvalidContext = "invalid_context";
+    internal const string TargetingKeyMissing = "targeting_key_missing";
+    internal const string ProviderFatal = "provider_fatal";
+}

src/OpenFeature.Providers.Ofrep/Client/Constants/OfrepPaths.cs

@@ -0,0 +1,7 @@
+namespace OpenFeature.Providers.Ofrep.Client.Constants;
+
+internal static class OfrepPaths
+{
+    // OFREP API paths
+    internal const string Evaluate = "/ofrep/v1/evaluate/flags/";
+}

src/OpenFeature.Providers.Ofrep/Client/IOfrepClient.cs

@@ -0,0 +1,22 @@
+using OpenFeature.Model;
+using OpenFeature.Providers.Ofrep.Models;
+
+namespace OpenFeature.Providers.Ofrep.Client;
+
+/// <summary>
+/// Interface for the OFREP HTTP client.
+/// </summary>
+internal interface IOfrepClient : IDisposable
+{
+    /// <summary>
+    /// Evaluates a flag value using the OFREP API.
+    /// </summary>
+    /// <typeparam name="T">The type of the flag value.</typeparam>
+    /// <param name="flagKey">The key of the flag to evaluate.</param>
+    /// <param name="defaultValue">The default value to return if evaluation fails.</param>
+    /// <param name="context">The evaluation context.</param>
+    /// <param name="cancellationToken">A token to cancel the operation.</param>
+    /// <returns>The evaluated flag response.</returns>
+    Task<OfrepResponse<T>> EvaluateFlag<T>(string flagKey, T defaultValue, EvaluationContext? context,
+        CancellationToken cancellationToken);
+}