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https://codeup.aliyun.com/67c68d4e484ca2f0a13ac3c1/ydc/jsowell-charger-web.git
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92 lines
3.2 KiB
Java
92 lines
3.2 KiB
Java
package com.jsowell.netty.handler;
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import com.google.common.primitives.Bytes;
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import com.jsowell.common.constant.CacheConstants;
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import com.jsowell.common.core.domain.ykc.YKCDataProtocol;
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import com.jsowell.common.core.domain.ykc.YKCFrameTypeCode;
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import com.jsowell.common.core.redis.RedisCache;
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import com.jsowell.common.enums.ykc.PileChannelEntity;
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import com.jsowell.common.util.BytesUtil;
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import com.jsowell.common.util.CRC16Util;
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import com.jsowell.common.util.DateUtils;
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import io.netty.channel.Channel;
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import org.springframework.beans.factory.InitializingBean;
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import org.springframework.beans.factory.annotation.Autowired;
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/**
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* 模板方法模式
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*/
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public abstract class AbstractHandler implements InitializingBean {
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@Autowired
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private RedisCache redisCache;
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/**
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* 执行逻辑
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* 有应答
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*/
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public byte[] supplyProcess(YKCDataProtocol ykcDataProtocol, Channel channel) {
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throw new UnsupportedOperationException();
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}
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/**
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* 执行逻辑
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* 不需要应答
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*/
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// public void pushProcess() {
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// throw new UnsupportedOperationException();
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// }
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/**
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* 组装应答的结果
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* @param ykcDataProtocol 请求数据
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* @param messageBody 消息体
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* @return 应答结果
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*/
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protected byte[] getResult(YKCDataProtocol ykcDataProtocol, byte[] messageBody) {
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// 起始标志
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byte[] head = ykcDataProtocol.getHead();
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// 序列号域
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byte[] serialNumber = ykcDataProtocol.getSerialNumber();
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// 加密标志
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byte[] encryptFlag = ykcDataProtocol.getEncryptFlag();
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// 请求帧类型
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byte[] requestFrameType = ykcDataProtocol.getFrameType();
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// 应答帧类型
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byte[] responseFrameType = YKCFrameTypeCode.ResponseRelation.getResponseFrameType(requestFrameType);
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// 数据域 值为“序列号域+加密标志+帧类型标志+消息体”字节数之和
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byte[] dataFields = Bytes.concat(serialNumber, encryptFlag, responseFrameType, messageBody);
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// 计算crc： 从序列号域到数据域的 CRC 校验
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int crc16 = CRC16Util.calcCrc16(dataFields);
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return Bytes.concat(head, BytesUtil.intToBytes(dataFields.length, 1), dataFields, BytesUtil.intToBytes(crc16));
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}
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/**
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* 保存桩最后链接到平台的时间
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* @param pileSn 桩编号
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*/
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protected void saveLastTimeAndCheckChannel(String pileSn, Channel channel) {
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String redisKey = CacheConstants.PILE_LAST_CONNECTION + pileSn;
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redisCache.setCacheObject(redisKey, DateUtils.getDateTime(), CacheConstants.cache_expire_time_1d);
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// 保存桩号和channel的关系
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PileChannelEntity.checkChannel(pileSn, channel);
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}
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/**
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* 阻止重复帧
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*/
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protected boolean verifyTheDuplicateRequest(YKCDataProtocol ykcDataProtocol, Channel channel) {
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// 获取序列号域
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int serialNumber = BytesUtil.bytesToIntLittle(ykcDataProtocol.getSerialNumber());
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// 获取channelId
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String channelId = channel.id().asShortText();
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String redisKey = "Request_" + channelId + "_" + serialNumber;
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return false;
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}
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} |