RocketMQ を使用して Java 分散トランザクションを実装する方法

TransactionProducer producer = TransactionProducer.createTransactionProducer(namesrvAddr, groupName);

TransactionListener listener = new TransactionListener() {
    @Override
    public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
        // 处理本地事务逻辑
        return LocalTransactionState.COMMIT_MESSAGE;
    }

    @Override
    public LocalTransactionState checkLocalTransaction(MessageExt msg) {
        // 检查本地事务的最终状态
        return LocalTransactionState.COMMIT_MESSAGE;
    }
};

SendMessageResult result = producer.sendMessageInTransaction(msg, listener, null);

producer.setTransactionListener(new TransactionListener() {
    @Override
    public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
        // 处理本地事务逻辑
        return LocalTransactionState.COMMIT_MESSAGE;
    }

    @Override
    public LocalTransactionState checkLocalTransaction(MessageExt msg) {
        // 检查本地事务的最终状态
        return LocalTransactionState.UNKNOW;
    }
});

public class OrderCreateTransactionListener implements TransactionListener {

    @Override
    public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
        // 扣除库存
        // 预扣资金
        return LocalTransactionState.COMMIT_MESSAGE;
    }

    @Override
    public LocalTransactionState checkLocalTransaction(MessageExt msg) {
        // 检查库存和资金是否更新成功
        return LocalTransactionState.COMMIT_MESSAGE;
    }
}