✨ feat: add api to retrieve the latest data for the server and client sdks

modules/evaluation-server/src/Api/Public/SdkController.cs

@@ -0,0 +1,59 @@
+using Domain.EndUsers;
+using Domain.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Api.Public;
+
+public class SdkController : PublicApiControllerBase
+{
+    private readonly IDataSyncService _dataSyncService;
+
+    public SdkController(IDataSyncService dataSyncService)
+    {
+        _dataSyncService = dataSyncService;
+    }
+
+    [HttpGet("server/latest-all")]
+    public async Task<IActionResult> GetServerSideSdkPayloadAsync()
+    {
+        if (!Authenticated)
+        {
+            return Unauthorized();
+        }
+
+        var payload = await _dataSyncService.GetServerSdkPayloadAsync(EnvId, 0);
+
+        var bootstrap = new
+        {
+            messageType = "data-sync",
+            data = payload
+        };
+
+        return new JsonResult(bootstrap);
+    }
+
+    [HttpPost("client/latest-all")]
+    public async Task<IActionResult> GetClientSdkPayloadAsync(EndUser endUser)
+    {
+        if (!Authenticated)
+        {
+            return Unauthorized();
+        }
+
+        if (!endUser.IsValid())
+        {
+            return BadRequest("invalid end user");
+        }
+
+        var payload = await _dataSyncService.GetClientSdkPayloadAsync(EnvId, endUser, 0);
+
+        var bootstrap = payload.FeatureFlags.Select(x => new
+        {
+            x.Id,
+            x.Variation,
+            x.VariationType
+        });
+
+        return new JsonResult(bootstrap);
+    }
+}

modules/evaluation-server/src/Domain/Services/IDataSyncService.cs

@@ -1,4 +1,5 @@
 using System.Text.Json;
+using Domain.EndUsers;
 using Domain.Protocol;
 using Domain.WebSockets;
 
@@ -8,6 +9,10 @@ public interface IDataSyncService
 {
     Task<object> GetPayloadAsync(Connection connection, DataSyncMessage message);
 
+    Task<ClientSdkPayload> GetClientSdkPayloadAsync(Guid envId, EndUser user, long timestamp);
+
+    Task<ServerSdkPayload> GetServerSdkPayloadAsync(Guid envId, long timestamp);
+
     Task<object> GetFlagChangePayloadAsync(Connection connection, JsonElement flag);
 
     Task<object> GetSegmentChangePayloadAsync(Connection connection, JsonElement segment, string[] affectedFlagIds);

modules/evaluation-server/src/Infrastructure/Services/DataSyncService.cs

@@ -41,6 +41,47 @@ public async Task<object> GetPayloadAsync(Connection connection, DataSyncMessage
         return payload;
     }
 
+    public async Task<ClientSdkPayload> GetClientSdkPayloadAsync(Guid envId, EndUser user, long timestamp)
+    {
+        var eventType = timestamp == 0 ? DataSyncEventTypes.Full : DataSyncEventTypes.Patch;
+        var flagsBytes = await _cacheService.GetFlagsAsync(envId, timestamp);
+
+        var clientSdkFlags = new List<ClientSdkFlag>();
+        foreach (var flagBytes in flagsBytes)
+        {
+            using var document = JsonDocument.Parse(flagBytes);
+            var flag = document.RootElement;
+
+            clientSdkFlags.Add(await GetClientSdkFlagAsync(flag, user));
+        }
+
+        return new ClientSdkPayload(eventType, user.KeyId, clientSdkFlags);
+    }
+
+    public async Task<ServerSdkPayload> GetServerSdkPayloadAsync(Guid envId, long timestamp)
+    {
+        var eventType = timestamp == 0 ? DataSyncEventTypes.Full : DataSyncEventTypes.Patch;
+        var featureFlags = new List<JsonObject>();
+        var segments = new List<JsonObject>();
+
+        var flagsBytes = await _cacheService.GetFlagsAsync(envId, timestamp);
+        foreach (var flag in flagsBytes)
+        {
+            var jsonObject = JsonNode.Parse(flag)!.AsObject();
+            jsonObject.Remove("");
+            featureFlags.Add(jsonObject);
+        }
+
+        var segmentsBytes = await _cacheService.GetSegmentsAsync(envId, timestamp);
+        foreach (var segment in segmentsBytes)
+        {
+            var jsonObject = JsonNode.Parse(segment)!.AsObject();
+            segments.Add(jsonObject);
+        }
+
+        return new ServerSdkPayload(eventType, featureFlags, segments);
+    }
+
     public async Task<object> GetFlagChangePayloadAsync(Connection connection, JsonElement flag)
     {
         if (connection.Type == ConnectionType.Client && connection.User == null)
@@ -118,23 +159,6 @@ private async Task<ClientSdkFlag> GetClientSdkFlagAsync(JsonElement flag, EndUse
         return new ClientSdkFlag(flag, userVariation, variations);
     }
 
-    private async Task<ClientSdkPayload> GetClientSdkPayloadAsync(Guid envId, EndUser user, long timestamp)
-    {
-        var eventType = timestamp == 0 ? DataSyncEventTypes.Full : DataSyncEventTypes.Patch;
-        var flagsBytes = await _cacheService.GetFlagsAsync(envId, timestamp);
-
-        var clientSdkFlags = new List<ClientSdkFlag>();
-        foreach (var flagBytes in flagsBytes)
-        {
-            using var document = JsonDocument.Parse(flagBytes);
-            var flag = document.RootElement;
-
-            clientSdkFlags.Add(await GetClientSdkFlagAsync(flag, user));
-        }
-
-        return new ClientSdkPayload(eventType, user.KeyId, clientSdkFlags);
-    }
-
     #endregion
 
     #region get server sdk payload
@@ -157,28 +181,5 @@ private ServerSdkPayload GetServerSdkSegmentChangePayload(JsonElement segment)
         );
     }
 
-    private async Task<ServerSdkPayload> GetServerSdkPayloadAsync(Guid envId, long timestamp)
-    {
-        var eventType = timestamp == 0 ? DataSyncEventTypes.Full : DataSyncEventTypes.Patch;
-        var featureFlags = new List<JsonObject>();
-        var segments = new List<JsonObject>();
-
-        var flagsBytes = await _cacheService.GetFlagsAsync(envId, timestamp);
-        foreach (var flag in flagsBytes)
-        {
-            var jsonObject = JsonNode.Parse(flag)!.AsObject();
-            featureFlags.Add(jsonObject);
-        }
-
-        var segmentsBytes = await _cacheService.GetSegmentsAsync(envId, timestamp);
-        foreach (var segment in segmentsBytes)
-        {
-            var jsonObject = JsonNode.Parse(segment)!.AsObject();
-            segments.Add(jsonObject);
-        }
-
-        return new ServerSdkPayload(eventType, featureFlags, segments);
-    }
-
     #endregion
 }