part #2

src/__Libraries/StellaOps.Replay/Engine/ReplayEngine.Loading.cs

@@ -0,0 +1,40 @@
+using StellaOps.Replay.Models;
+using StellaOps.Testing.Manifests.Models;
+
+namespace StellaOps.Replay.Engine;
+
+public sealed partial class ReplayEngine
+{
+    private async Task<LoadResult<FeedSnapshot>> LoadFeedSnapshotAsync(
+        FeedSnapshot snapshot,
+        CancellationToken ct)
+    {
+        try
+        {
+            var feed = await _feedLoader.LoadByDigestAsync(snapshot.Digest, ct).ConfigureAwait(false);
+            if (!string.Equals(feed.Digest, snapshot.Digest, StringComparison.OrdinalIgnoreCase))
+                return LoadResult<FeedSnapshot>.Fail($"Feed digest mismatch: expected {snapshot.Digest}");
+            return LoadResult<FeedSnapshot>.Ok(feed);
+        }
+        catch (Exception ex)
+        {
+            return LoadResult<FeedSnapshot>.Fail($"Failed to load feed: {ex.Message}");
+        }
+    }
+
+    private async Task<LoadResult<PolicySnapshot>> LoadPolicySnapshotAsync(
+        PolicySnapshot snapshot,
+        CancellationToken ct)
+    {
+        try
+        {
+            var policy = await _policyLoader.LoadByDigestAsync(snapshot.LatticeRulesDigest, ct)
+                .ConfigureAwait(false);
+            return LoadResult<PolicySnapshot>.Ok(policy);
+        }
+        catch (Exception ex)
+        {
+            return LoadResult<PolicySnapshot>.Fail($"Failed to load policy: {ex.Message}");
+        }
+    }
+}