package com.battery.device.bts;

import com.battery.device.api.DeviceAdapterException;

/**
 * 表示可供调度与恢复逻辑分类处理的 BTS TCP 传输失败。
 */
public class BtsTransportException extends DeviceAdapterException
{
    private static final long serialVersionUID = 1L;

    public enum Reason
    {
        CONNECTION_FAILED,
        TIMEOUT,
        DISCONNECTED,
        RESPONSE_TOO_LARGE,
        INVALID_UTF8,
        IO_FAILURE,
        /** 请求不在只读命令白名单内，在代码层被拒绝发出（ADR-0068）。 */
        READ_ONLY_REJECTED
    }

    private final Reason reason;

    public BtsTransportException(Reason reason, String message, Throwable cause)
    {
        super(reason.name(), message, cause);
        this.reason = reason;
    }

    /** 返回本次传输失败的分类。 */
    public Reason reason()
    {
        return reason;
    }
}