Added database version to the check command

yuniql-core/ConnectivityService.cs

@@ -24,6 +24,34 @@ public ConnectivityService(IDataService dataService, ITraceService traceService)
             this._connectionInfo = _dataService.GetConnectionInfo();
         }
 
+        /// <summary>
+        /// Checks the database server informations
+        /// </summary>
+        /// <returns></returns>
+        public bool CheckDatabaseVersion()
+        {
+            try
+            {
+                using (var connection = _dataService.CreateConnection())
+                {
+                    connection.Open();
+                    var versionCommand = connection.CreateCommand();
+                    versionCommand.CommandText = _dataService.GetSqlForGetDatabaseVersion();
+                    var version = (string)versionCommand.ExecuteScalar();
+                    _traceService.Info($"Database version: {version}");
+                }
+                return true;
+            }
+            catch (Exception ex)
+            {
+                _traceService.Error($"Sql/odbc connectivity to database {_connectionInfo.Database} on {_connectionInfo.DataSource} - Failed. Error message: {ex.Message}. " +
+                                    $"Suggested action: Check your connection string and verify that the user have sufficient permissions to access the database. " +
+                                    $"For sample connection strings, please find your platform at https://www.connectionstrings.com. " +
+                                    $"If you think this is a bug, please create an issue ticket here https://github.com/rdagumampan/yuniql/issues.");
+                return false;
+            }
+        }
+
         /// <summary>
         /// Checks if we can establish sql/odbc connectivity to database on target server/cluster
         /// </summary>
@@ -157,6 +185,7 @@ public void CheckConnectivity()
 
             CheckMasterConnectivity();
             CheckDatabaseConnectivity();
+            CheckDatabaseVersion();
         }
     }
 }

yuniql-extensibility/IDataService.cs

@@ -150,6 +150,11 @@ public interface IDataService
         /// </summary>
         public string GetSqlForUpsertVersion();
 
+        /// <summary>
+        /// Returns the SQL statement to use for getting the database verison.
+        /// </summary>
+        public string GetSqlForGetDatabaseVersion();
+
         //TODO: Consider dropping this in next release
         /// <summary>
         /// Returns true if the version tracking table requires upgrade for this release

yuniql-platforms/mysql/MySqlDataService.cs

@@ -186,6 +186,12 @@ ON DUPLICATE KEY UPDATE
     failed_script_error = VALUES(failed_script_error);
             ";
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT VERSION();
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
         //when table __yuniqldbversion exists, we need to upgrade from yuniql v1.0 to v1.1 version

yuniql-platforms/oracle/OracleDataService.cs

@@ -231,6 +231,12 @@ public string GetSqlForUpdateVersion()
         public string GetSqlForUpsertVersion()
             => throw new NotSupportedException("Not supported in the target platform.");
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT version FROM v$instance;
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
             //when table __yuniqldbversion exists, we need to upgrade from yuniql v1.0 to v1.1 version

yuniql-platforms/postgresql/PostgreSqlDataService.cs

@@ -190,6 +190,12 @@ public string GetSqlForUpdateVersion()
         public string GetSqlForUpsertVersion()
             => throw new NotSupportedException("Not supported for the target platform");
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT VERSION();
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
         //when table __yuniqldbversion exists, we need to upgrade from yuniql v1.0 to v1.1 version

yuniql-platforms/redshift/RedshiftDataService.cs

@@ -192,6 +192,12 @@ public string GetSqlForUpdateVersion()
         public string GetSqlForUpsertVersion()
             => throw new NotSupportedException("Not supported for the target platform");
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT VERSION();
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
             => @"

yuniql-platforms/snowflake/SnowflakeDataService.cs

@@ -225,6 +225,12 @@ public string GetSqlForUpdateVersion()
         public string GetSqlForUpsertVersion()
             => throw new NotSupportedException("Not supported for the target platform");
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT CURRENT_VERSION();
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
             => @"

yuniql-platforms/sqlserver/SqlServerDataService.cs

@@ -187,6 +187,12 @@ UPDATE [${YUNIQL_SCHEMA_NAME}].[${YUNIQL_TABLE_NAME}]
         public string GetSqlForUpsertVersion()
             => throw new NotSupportedException("Not supported for the target platform");
 
+        ///<inheritdoc/>
+        public string GetSqlForGetDatabaseVersion()
+            => @"
+SELECT @@VERSION;
+            ";
+
         ///<inheritdoc/>
         public string GetSqlForCheckRequireMetaSchemaUpgrade(string currentSchemaVersion)
         //when table __yuniqldbversion exists, we need to upgrade from yuniql v1.0 to v1.1 version