Support for fb_info_replica_mode (#942)

Author: cincuranet

Provider/src/FirebirdSql.Data.FirebirdClient.Tests/FbDatabaseInfoTests.cs

@@ -42,7 +42,7 @@ public void CompleteDatabaseInfoTest()
 				.Where(x => !x.IsSpecialName)
 				.Where(x => x.Name.EndsWith("Async")))
 			{
-				if (ServerVersion < new Version(4, 0, 0, 0) && new[] { "GetWireCryptAsync", "GetCryptPluginAsync", "GetNextAttachmentAsync", "GetNextStatementAsync" }.Contains(m.Name))
+				if (ServerVersion < new Version(4, 0, 0, 0) && new[] { "GetWireCryptAsync", "GetCryptPluginAsync", "GetNextAttachmentAsync", "GetNextStatementAsync", "GetReplicaModeAsync" }.Contains(m.Name))
 					continue;
 
 				Assert.DoesNotThrowAsync(() => (Task)m.Invoke(dbInfo, new object[] { CancellationToken.None }), m.Name);

Provider/src/FirebirdSql.Data.FirebirdClient/Common/IscHelper.cs

@@ -131,14 +131,12 @@ public static List<object> ParseDatabaseInfo(byte[] buffer)
 					case IscCodes.isc_info_db_class:
 						{
 							var serverClass = VaxInteger(buffer, pos, length);
-							if (serverClass == IscCodes.isc_info_db_class_classic_access)
+							info.Add(serverClass switch
 							{
-								info.Add("CLASSIC SERVER");
-							}
-							else
-							{
-								info.Add("SUPER SERVER");
-							}
+								IscCodes.isc_info_db_class_classic_access => "CLASSIC SERVER",
+								IscCodes.isc_info_db_class_server_access => "SUPER SERVER",
+								_ => throw new ArgumentOutOfRangeException(nameof(serverClass), $"{nameof(serverClass)}={serverClass}"),
+							});
 						}
 						break;
 
@@ -150,6 +148,19 @@ public static List<object> ParseDatabaseInfo(byte[] buffer)
 						}
 						break;
 
+					case IscCodes.fb_info_replica_mode:
+						{
+							var mode = VaxInteger(buffer, pos, length);
+							info.Add(mode switch
+							{
+								0 => "NONE",
+								1 => "READ ONLY",
+								2 => "READ WRITE",
+								_ => throw new ArgumentOutOfRangeException(nameof(mode), $"{nameof(mode)}={mode}"),
+							});
+						}
+						break;
+
 					default:
 						throw new ArgumentOutOfRangeException(nameof(type), $"{nameof(type)}={type}");
 				}

Provider/src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbDatabaseInfo.cs

@@ -413,6 +413,15 @@ public Task<long> GetNextStatementAsync(CancellationToken cancellationToken = de
 			return GetValueAsync<long>(IscCodes.fb_info_next_statement, cancellationToken);
 		}
 
+		public string GetReplicaMode()
+		{
+			return GetValue<string>(IscCodes.fb_info_replica_mode);
+		}
+		public Task<string> GetReplicaModeAsync(CancellationToken cancellationToken = default)
+		{
+			return GetValueAsync<string>(IscCodes.fb_info_replica_mode, cancellationToken);
+		}
+
 		#endregion
 
 		#region Constructors