#7746 jwtfile path correction

src/Nethermind/Nethermind.JsonRpc/JsonRpcConfig.cs

@@ -38,7 +38,7 @@ public int WebSocketsPort
     public long? MaxRequestBodySize { get; set; } = 30000000;
     public int MaxLogsPerResponse { get; set; } = 20_000;
     public int? EthModuleConcurrentInstances { get; set; } = null;
-    public string JwtSecretFile { get; set; } = "keystore/jwt-secret";
+    public string JwtSecretFile { get; set; } = null;
     public bool UnsecureDevNoRpcAuthentication { get; set; }
     public int? MaxLoggedRequestParametersCharacters { get; set; } = null;
     public string[]? MethodsLoggingFiltering { get; set; } =

src/Nethermind/Nethermind.Runner/Ethereum/Steps/StartRpc.cs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: LGPL-3.0-only
 
 using System.Linq;
+using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
 using Nethermind.Api;
@@ -14,6 +15,7 @@
 using Nethermind.Logging;
 using Nethermind.Runner.JsonRpc;
 using Nethermind.Serialization.Json;
+using Nethermind.KeyStore.Config;
 
 namespace Nethermind.Runner.Ethereum.Steps
 {
@@ -30,8 +32,34 @@ public StartRpc(INethermindApi api)
         public async Task Execute(CancellationToken cancellationToken)
         {
             IJsonRpcConfig jsonRpcConfig = _api.Config<IJsonRpcConfig>();
+            IKeyStoreConfig keyStoreConfig = _api.Config<IKeyStoreConfig>();
             ILogger logger = _api.LogManager.GetClassLogger();
 
+
+            // Update the JWT secret path based on the data directory.
+            try
+            {
+                string defaultPath = "keystore/jwt-secret";
+                string newPath = Path.Combine(keyStoreConfig.KeyStoreDirectory, "jwt-secret");
+                if (string.IsNullOrEmpty(jsonRpcConfig.JwtSecretFile))
+                {
+                    logger.Warn("JsonRpcConfig JwtSecretFile is null or empty because of omission or human error.");
+                    // check if jwt-secret file already exists in previous default directory
+                    if (File.Exists(defaultPath))
+                    {
+                        // move the jwt-secret file
+                        logger.Warn($"jwt-secret already exists at {defaultPath}. Moving it to {newPath} as data directory has been updated");
+                        File.Move(defaultPath, newPath);
+                    }
+                    logger.Warn($"jwt-secret file does not exist at {defaultPath}. Directly setting it to new path: {newPath}");
+                    jsonRpcConfig.JwtSecretFile = newPath;
+                }
+            }
+            catch (IOException ex)
+            {
+                logger.Error("IO error while setting jwt-secret file path: ", ex);
+            }
+
             if (jsonRpcConfig.Enabled)
             {
                 IInitConfig initConfig = _api.Config<IInitConfig>();