com.mysql.cj.jdbc.ha.NdbLoadBalanceExceptionChecker Maven / Gradle / Ivy

/*
 * Copyright (c) 2010, 2020, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 2.0, as published by the
 * Free Software Foundation.
 *
 * This program is also distributed with certain software (including but not
 * limited to OpenSSL) that is licensed under separate terms, as designated in a
 * particular file or component or in included license documentation. The
 * authors of MySQL hereby grant you an additional permission to link the
 * program and your derivative works with the separately licensed software that
 * they have included with MySQL.
 *
 * Without limiting anything contained in the foregoing, this file, which is
 * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at
 * http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
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 * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
 * for more details.
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package com.mysql.cj.jdbc.ha;

public class NdbLoadBalanceExceptionChecker extends StandardLoadBalanceExceptionChecker {

    @Override
    public boolean shouldExceptionTriggerFailover(Throwable ex) {
        return super.shouldExceptionTriggerFailover(ex) || checkNdbException(ex);
    }

    private boolean checkNdbException(Throwable ex) {
        // Have to parse the message since most NDB errors are mapped to the same DEMC, sadly.
        return (ex.getMessage().startsWith("Lock wait timeout exceeded")
                || (ex.getMessage().startsWith("Got temporary error") && ex.getMessage().endsWith("from NDB")));
    }
}