High-latency DB testing stuff (#22282)

Content.Server/Database/ServerDbBase.cs

@@ -1,6 +1,7 @@
 using System.Collections.Immutable;
 using System.Linq;
 using System.Net;
+using System.Runtime.CompilerServices;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
@@ -20,6 +21,14 @@ namespace Content.Server.Database
 {
     public abstract class ServerDbBase
     {
+        private readonly ISawmill _opsLog;
+
+        /// <param name="opsLog">Sawmill to trace log database operations to.</param>
+        public ServerDbBase(ISawmill opsLog)
+        {
+            _opsLog = opsLog;
+        }
+
         #region Preferences
         public async Task<PlayerPreferences?> GetPlayerPreferencesAsync(NetUserId userId)
         {
@@ -1375,7 +1384,12 @@ INSERT INTO player_round (players_id, rounds_id) VALUES ({players[player]}, {id}
 
         #endregion
 
-        protected abstract Task<DbGuard> GetDb();
+        protected abstract Task<DbGuard> GetDb([CallerMemberName] string? name = null);
+
+        protected void LogDbOp(string? name)
+        {
+            _opsLog.Verbose($"Running DB operation: {name ?? "unknown"}");
+        }
 
         protected abstract class DbGuard : IAsyncDisposable
         {