Move 'reason' column to be TEXT in order to support large error messages coming from knex drivers.

Author: Tal Almagor

lib/schema.js

@@ -18,7 +18,8 @@ var SchemaManager = (function () {
      * Schema Manager.
      *
      * @param schema: String, schema name.
-     * @param config: Object, connection config.
+     * @param client: String, client name [e.g. "mysql"].
+     * @param connectionConfig: Object/String, either a config object a URL formatted string.
      * @constructor
      */
     function SchemaManager(schema, client, connectionConfig) {
@@ -64,7 +65,7 @@ var SchemaManager = (function () {
                     table.dateTime('installation_time');
                     table.integer('execution_time');
                     table.integer('status');
-                    table.string('reason');
+                    table.text('reason');
                 });
         };
 
@@ -181,7 +182,7 @@ var SchemaManager = (function () {
                     status = 1;
                     reason = e.message;
                     if (_private._logger.isLevelEnabled("DEBUG")) {
-                        _private._logger.error(e);
+                        _private._logger.error(e.code);
                     }
                     throw new Error(util.format(
                         "Migration (%s/%s) failed. Run `mysql-migrate info` " +