[编织消息框架][分层模型设计]会话与节点

Posted 2020-09-06 solq321

 1 public class QNode implements IRecycle {
 2     /**
 3      * session会话，记录通信层属性
 4      **/
 5     private QSession session;
 6     /**
 7      * message cb 维护消息回调
 8      **/
 9     private QCallbackManager callbackManager;
10     /**
11      * netty channel
12      **/
13     private Channel channel;
14 
15     private InetSocketAddress address;
16 }

QNode

1 public class QSession implements IRecycle {
2 
3     public static enum SESSION_KEY {
4     ALIAS, OP_TIME, ID,
5     }
6 
7     private long id;
8     private Map<String, Object> values = new HashMap<>();
9 }

QSession

  1 /***
  2  * 响应异步消息 针对业务上的逻辑处理 {@link QNode#send(Object, IQCallback)}
  3  * 
  4  * @author solq
  5  */
  6 public class QCallbackManager implements IRecycle {
  7     private final static Logger LOGGER = LoggerFactory.getLogger(QCallbackManager.class);
  8 
  9     private final static ScheduledExecutorService pool = PoolUtil.createScheduledPool(QMConfig.getInstance().POOL_CLEAR_MESSAGE_CORE, "message clear");
 10 
 11     private Map<Long, IQCallback<?>> messageRecoreds = Collections.synchronizedMap(new HashMap<>());
 12 
 13     @SuppressWarnings({ "unchecked", "rawtypes" })
 14     private void buildTask(long sn, IQCallback cb) {
 15     messageRecoreds.put(sn, cb);
 16     Future<?> future = pool.schedule(new Runnable() {
 17         private long _sn = sn;
 18 
 19         @Override
 20         public void run() {
 21         IQCallback<?> _cb = messageRecoreds.remove(_sn);
 22         if (_cb == null) {
 23             return;
 24         }
 25         try {
 26             _cb.onReceiveError(QCode.MESSAGE_ERROR_TIMEOUT);
 27         } finally {
 28             _cb.recycle();
 29         }
 30 
 31         }
 32     }, QMConfig.getInstance().NETTY_MESSAGE_CALLBACK_CLEAR_INTERVAL, TimeUnit.MILLISECONDS);
 33     cb.setFuture(future);
 34     }
 35 
 36     public <T> IQCallback<T> doSend(QPacket sendPacket, IQCallback<T> cb) {
 37     if (cb == null) {
 38         return null;
 39     }
 40     sendPacket.setStatus(QPacket.MASK_RESPONSE);
 41     cb.setSendPacket(sendPacket);
 42     buildTask(sendPacket.getSn(), cb);
 43     return cb;
 44     }
 45 
 46     public void doSendError(QPacket sendPacket, short code) {
 47     final long key = sendPacket.getSn();
 48     IQCallback<?> cb = messageRecoreds.remove(key);
 49     if (cb == null) {
 50         if (LOGGER.isWarnEnabled()) {
 51         LOGGER.warn("发送失败 未找到回调 :" + key);
 52         }
 53         return;
 54     }
 55     try {
 56         cb.onSendError(code);
 57     } finally {
 58         cb.recycle();
 59     }
 60     }
 61 
 62     public void doReceiveSucceed(QPacket rePacket) {
 63     final long key = rePacket.getSn();
 64     IQCallback<?> cb = messageRecoreds.remove(key);
 65     if (cb == null) {
 66         if (LOGGER.isWarnEnabled()) {
 67         LOGGER.warn("响应成功 未找到回调 :" + key);
 68         }
 69         return;
 70     }
 71     try {
 72         short code = rePacket.toCode();
 73         cb.setCode(code);
 74         cb.onSucceed(code);
 75     } finally {
 76         cb.recycle();
 77     }
 78     }
 79 
 80     public void doReceiveError(QPacket rePacket) {
 81     final long key = rePacket.getSn();
 82     IQCallback<?> cb = messageRecoreds.remove(key);
 83     if (cb == null) {
 84         if (LOGGER.isWarnEnabled()) {
 85         LOGGER.warn("响应失败 未找到回调 :" + key);
 86         }
 87         return;
 88     }
 89     try {
 90         short code = rePacket.toCode();
 91         cb.setCode(code);
 92         cb.onReceiveError(code);
 93     } finally {
 94         cb.recycle();
 95     }
 96     }
 97 
 98     public int getMessageRecoredSize() {
 99     return messageRecoreds.size();
100     }
101 
102     @Override
103     public void recycle() {
104     // 释放所有消息
105     messageRecoreds.forEach((sn, cb) -> {
106         cb.recycle();
107     });
108     messageRecoreds.clear();
109     }

QCallbackManager

 1 public abstract class IQCallback<T> implements IRecycle, QResult<T> {
 2     //响应成功回调
 3     abstract public void onSucceed(short code);
 4 
 5     // 默认什么也不用做
 6     public void onSendError(short code) {
 7     if (LOGGER.isWarnEnabled()) {
 8         LOGGER.warn("onSendError : {)", code);
 9     }
10     this.code = code;
11     }
12 
13     // 默认什么也不用做
14     public void onReceiveError(short code) {
15     if (LOGGER.isWarnEnabled()) {
16         LOGGER.warn("onReceiveError : {)", code);
17     }
18     this.code = code;
19     }
20 }

IQCallback 有三种响应消息处理

1.onSucceed 响应返回成功

2.onSendError 发送时失败

3.onReceiveError 响应返回失败

有的业务非常复杂，如果响应失败了可以根据返回码深度处理