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Mica net is a net framework.
/*
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Copyright 2020 t-io
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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*/
package org.tio.core;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.tio.core.intf.Packet;
import org.tio.core.intf.Packet.Meta;
import org.tio.core.ssl.SslFacadeContext;
import org.tio.core.stat.ChannelStat;
import org.tio.core.task.DecodeRunnable;
import org.tio.core.task.HandlerRunnable;
import org.tio.core.task.SendRunnable;
import org.tio.utils.hutool.StrUtil;
import org.tio.utils.prop.MapPropSupport;
import java.io.IOException;
import java.nio.channels.AsynchronousSocketChannel;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.ReentrantReadWriteLock;
/**
* @author tanyaowu
* 2017年10月19日 上午9:39:46
*/
public abstract class ChannelContext extends MapPropSupport {
private static final Logger log = LoggerFactory.getLogger(ChannelContext.class);
public static final String UNKNOWN_ADDRESS_IP = "$UNKNOWN";
public static final AtomicInteger UNKNOWN_ADDRESS_PORT_SEQ = new AtomicInteger();
public final ReentrantReadWriteLock closeLock = new ReentrantReadWriteLock();
public final ChannelStat stat = new ChannelStat();
public final CloseMeta closeMeta = new CloseMeta();
/**
* 此值不设时，心跳时间取org.tio.core.TioConfig.heartbeatTimeout
* 当然这个值如果小于org.tio.core.TioConfig.heartbeatTimeout，定时检查的时间间隔还是以org.tio.core.TioConfig.heartbeatTimeout为准，只是在判断时用此值
*/
public Long heartbeatTimeout = null;
/**
* 一个packet所需要的字节数（用于应用告诉框架，下一次解码所需要的字节长度，省去冗余解码带来的性能损耗）
*/
public Integer packetNeededLength = null;
public TioConfig tioConfig = null;
public DecodeRunnable decodeRunnable = null;
public HandlerRunnable handlerRunnable = null;
public SendRunnable sendRunnable = null;
public WriteCompletionHandler writeCompletionHandler = null;
public SslFacadeContext sslFacadeContext;
/**
* 状态位，使用二进制标识位来判断状态
*
*
* 0~2 位，配置状态 isVirtual(虚拟用于压测):0,isReconnect(重连):0logWhenDecodeError(解码出现异常时，是否打印异常日志):0
* 3~5 位，连接状态 isWaitingClose(等待关闭):0,isClosed(已关闭):1,isRemoved(已关闭):0
* 6~7 位，扩展状态 isAccepted(已接受,用于业务例如：mqtt):0,isBizStatus(业务自定义状态):0
*
*/
private byte states = 0;
/**
* The asynchronous socket channel.
*/
public AsynchronousSocketChannel asynchronousSocketChannel;
private ReadCompletionHandler readCompletionHandler = null;
private String userId;
private String token;
private String bsId;
private String id;
private Node clientNode;
/**
* 一些连接是代理的，譬如web服务器放在nginx后面，此时需要知道最原始的ip
*/
private Node proxyClientNode = null;
private Node serverNode;
/**
* 该连接在哪些组中
*/
private Set groups = null;
/**
* 个性化readBufferSize
*/
private Integer readBufferSize = null;
/**
* 连接关闭的原因码
*/
private CloseCode closeCode = CloseCode.INIT_STATUS;
/**
* ChannelContext
*
* @param tioConfig TioConfig
* @param asynchronousSocketChannel AsynchronousSocketChannel
* @author tanyaowu
*/
public ChannelContext(TioConfig tioConfig, AsynchronousSocketChannel asynchronousSocketChannel) {
super();
init(tioConfig, asynchronousSocketChannel);
if (tioConfig.sslConfig != null) {
try {
this.sslFacadeContext = new SslFacadeContext(this);
if (tioConfig.isServer()) {
this.sslFacadeContext.beginHandshake();
}
} catch (Exception e) {
log.error("在开始SSL握手时发生了异常", e);
Tio.close(this, "在开始SSL握手时发生了异常" + e.getMessage(), CloseCode.SSL_ERROR_ON_HANDSHAKE);
}
}
}
/**
* 创建一个虚拟ChannelContext，主要用来模拟一些操作，譬如压力测试，真实场景中用得少
*
* @param tioConfig
*/
public ChannelContext(TioConfig tioConfig) {
this(tioConfig, tioConfig.getTioUuid().uuid());
}
/**
* 创建一个虚拟ChannelContext，主要用来模拟一些操作，譬如压力测试，真实场景中用得少
*
* @param tioConfig
* @param id ChannelContext id
* @author tanyaowu
*/
public ChannelContext(TioConfig tioConfig, String id) {
this.setVirtual(true);
this.tioConfig = tioConfig;
this.clientNode = new Node("127.0.0.1", 26254);
this.id = id;
if (StrUtil.isBlank(id)) {
this.id = tioConfig.getTioUuid().uuid();
}
initOther();
}
protected void assignAnUnknownClientNode() {
setClientNode(createUnknownNode());
}
public static Node createUnknownNode() {
return new Node(UNKNOWN_ADDRESS_IP, UNKNOWN_ADDRESS_PORT_SEQ.incrementAndGet());
}
/**
* 创建Node
*
* @param asynchronousSocketChannel AsynchronousSocketChannel
* @return Node
* @throws IOException IOException
*/
public abstract Node createClientNode(AsynchronousSocketChannel asynchronousSocketChannel) throws IOException;
/**
* @return the remoteNode
*/
public Node getClientNode() {
return clientNode;
}
/**
* @param clientNode the clientNode to set
*/
public void setClientNode(Node clientNode) {
if (!this.tioConfig.isShortConnection && this.clientNode != null) {
tioConfig.clientNodes.remove(this);
}
this.clientNode = clientNode;
if (this.tioConfig.isShortConnection) {
return;
}
if (this.clientNode != null && !Objects.equals(UNKNOWN_ADDRESS_IP, this.clientNode.getIp())) {
tioConfig.clientNodes.put(this);
}
}
public Set getGroups() {
return groups;
}
/**
* @return the id
*/
public String getId() {
return id;
}
/**
* @return the readCompletionHandler
*/
public ReadCompletionHandler getReadCompletionHandler() {
return readCompletionHandler;
}
/**
* @return the serverNode
*/
public Node getServerNode() {
return serverNode;
}
/**
* @param serverNode the serverNode to set
*/
public void setServerNode(Node serverNode) {
this.serverNode = serverNode;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
/**
* @return the writeCompletionHandler
*/
public WriteCompletionHandler getWriteCompletionHandler() {
return writeCompletionHandler;
}
public void init(TioConfig tioConfig, AsynchronousSocketChannel asynchronousSocketChannel) {
this.id = tioConfig.getTioUuid().uuid();
this.setTioConfig(tioConfig);
tioConfig.ids.bind(this);
this.setAsynchronousSocketChannel(asynchronousSocketChannel);
this.readCompletionHandler = new ReadCompletionHandler(this);
this.writeCompletionHandler = new WriteCompletionHandler(this);
this.setLogWhenDecodeError(tioConfig.logWhenDecodeError);
initOther();
}
void initOther() {
// 默认 closed 设置为 true
setClosedState(true);
if (!tioConfig.isShortConnection) {
// 在长连接中，绑定群组几乎是必须要干的事，所以直接在初始化时给它赋值，省得在后面做同步处理
groups = ConcurrentHashMap.newKeySet();
}
}
/**
* @param packet Packet
* @param isSentSuccess isSentSuccess
* @author tanyaowu
*/
public void processAfterSent(Packet packet, boolean isSentSuccess) {
Meta meta = packet.getMeta();
if (meta != null) {
CountDownLatch countDownLatch = meta.getCountDownLatch();
countDownLatch.countDown();
}
try {
if (log.isDebugEnabled()) {
log.debug("{} 已经发送 {}", this, packet.logstr());
}
//非SSL or SSL已经握手
if (this.sslFacadeContext == null || this.sslFacadeContext.isHandshakeCompleted()) {
if (tioConfig.getTioListener() != null) {
try {
tioConfig.getTioListener().onAfterSent(this, packet, isSentSuccess);
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}
if (tioConfig.statOn) {
tioConfig.groupStat.sentPackets.increment();
stat.sentPackets.incrementAndGet();
}
}
} catch (Throwable e) {
log.error(e.getMessage(), e);
}
if (packet.getPacketListener() != null) {
try {
packet.getPacketListener().onAfterSent(this, packet, isSentSuccess);
} catch (Throwable e) {
log.error(e.getMessage(), e);
}
}
}
/**
* @param asynchronousSocketChannel the asynchronousSocketChannel to set
*/
public void setAsynchronousSocketChannel(AsynchronousSocketChannel asynchronousSocketChannel) {
this.asynchronousSocketChannel = asynchronousSocketChannel;
if (asynchronousSocketChannel != null) {
try {
setClientNode(createClientNode(asynchronousSocketChannel));
} catch (IOException e) {
log.info(e.getMessage(), e);
assignAnUnknownClientNode();
}
} else {
assignAnUnknownClientNode();
}
}
public boolean isVirtual() {
return getState(0);
}
public void setVirtual(boolean virtual) {
setState(0, virtual);
}
public boolean isReconnect() {
return getState(1);
}
public void setReconnect(boolean isReconnect) {
setState(1, isReconnect);
}
public boolean isLogWhenDecodeError() {
return getState(2);
}
public void setLogWhenDecodeError(boolean logWhenDecodeError) {
setState(2, logWhenDecodeError);
}
public boolean isWaitingClose() {
return getState(3);
}
public void setWaitingClose(boolean waitingClose) {
setState(3, waitingClose);
}
public boolean isClosed() {
return getState(4);
}
private void setClosedState(boolean isClosed) {
setState(4, isClosed);
}
/**
* @param isClosed the isClosed to set
*/
public void setClosed(boolean isClosed) {
setClosedState(isClosed);
if (isClosed && (clientNode == null || !UNKNOWN_ADDRESS_IP.equals(clientNode.getIp()))) {
String before = this.toString();
assignAnUnknownClientNode();
log.info("关闭前{}, 关闭后{}", before, this);
}
}
public boolean isRemoved() {
return getState(5);
}
/**
* @param isRemoved the isRemoved to set
*/
public void setRemoved(boolean isRemoved) {
setState(5, isRemoved);
}
public boolean isAccepted() {
if (isClosed()) {
return false;
}
return getState(6);
}
public void setAccepted(boolean accepted) {
setState(6, accepted);
}
public boolean isBizStatus() {
return getState(7);
}
public void setBizStatus(boolean bizStatus) {
setState(7, bizStatus);
}
public void setPacketNeededLength(Integer packetNeededLength) {
this.packetNeededLength = packetNeededLength;
}
public SslFacadeContext getSslFacadeContext() {
return sslFacadeContext;
}
/**
* 设置 SslFacadeContext 用于动态 ssl 的过程
*
* @param sslFacadeContext sslFacadeContext
*/
public void setSslFacadeContext(SslFacadeContext sslFacadeContext) {
this.sslFacadeContext = sslFacadeContext;
}
/**
* 获取 用户 id
*
* @return 用户 id
*/
public String getUserId() {
return userId;
}
/**
* @param userId the userid to set
* 给框架内部用的，用户请勿调用此方法
*/
public void setUserId(String userId) {
this.userId = userId;
}
/**
* @return the bsId
*/
public String getBsId() {
return bsId;
}
/**
* @param bsId the bsId to set
*/
public void setBsId(String bsId) {
this.bsId = bsId;
}
public TioConfig getTioConfig() {
return tioConfig;
}
/**
* @param tioConfig the tioConfig to set
*/
private void setTioConfig(TioConfig tioConfig) {
this.tioConfig = tioConfig;
if (tioConfig != null) {
decodeRunnable = new DecodeRunnable(this, tioConfig.tioExecutor);
handlerRunnable = new HandlerRunnable(this, tioConfig.tioExecutor);
sendRunnable = new SendRunnable(this, tioConfig.tioExecutor);
tioConfig.connections.add(this);
}
}
/**
* 是否是服务器端
*
* @return boolean
*/
public abstract boolean isServer();
/**
* @return the heartbeatTimeout
*/
public Long getHeartbeatTimeout() {
return heartbeatTimeout;
}
/**
* @param heartbeatTimeout the heartbeatTimeout to set
*/
public void setHeartbeatTimeout(Long heartbeatTimeout) {
this.heartbeatTimeout = heartbeatTimeout;
}
public int getReadBufferSize() {
if (readBufferSize != null && readBufferSize > 0) {
return readBufferSize;
}
return this.tioConfig.getReadBufferSize();
}
public void setReadBufferSize(int readBufferSize) {
this.readBufferSize = Math.min(readBufferSize, TcpConst.MAX_DATA_LENGTH);
}
/**
* @return the proxyClientNode
*/
public Node getProxyClientNode() {
return proxyClientNode;
}
/**
* @param proxyClientNode the proxyClientNode to set
*/
public void setProxyClientNode(Node proxyClientNode) {
this.proxyClientNode = proxyClientNode;
}
public CloseCode getCloseCode() {
return closeCode;
}
public void setCloseCode(CloseCode closeCode) {
this.closeCode = closeCode;
}
/**
* 获取指定状态位的值
*
* @param position 0~7 8位
*/
private boolean getState(int position) {
return (this.states & (1 << position)) != 0;
}
/**
* 设置指定状态位的值
*
* @param position 0~7 8位
* @param state 状态
*/
private void setState(int position, boolean state) {
if (state) {
// 使用或运算将指定位设置为1
this.states |= (byte) (1 << position);
} else {
// 使用与运算将指定位设置为0
this.states &= (byte) ~(1 << position);
}
}
/**
* 发送消息
*
* @param packet Packet
* @return 发送结果
*/
public boolean send(Packet packet) {
return Tio.send(this, packet);
}
/**
* 发送消息
*
* @param packet Packet
* @return 发送结果
*/
public boolean bSend(Packet packet) {
return Tio.bSend(this, packet);
}
/**
* 获取解码队列目前消息数
*
* @return 数据量
*/
public int getDecodeQueueSize() {
return this.decodeRunnable.getMsgQueueSize();
}
/**
* 获取处理队列目前消息数
*
* @return 数据量
*/
public int getHandlerQueueSize() {
return this.handlerRunnable.getMsgQueueSize();
}
/**
* 获取发送队列目前消息数
*
* @return 数据量
*/
public int getSendQueueSize() {
return this.sendRunnable.getMsgQueueSize();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ChannelContext other = (ChannelContext) obj;
if (id == null) {
return other.id == null;
} else {
return id.equals(other.id);
}
}
@Override
public int hashCode() {
if (StrUtil.isNotBlank(id)) {
return this.id.hashCode();
} else {
return super.hashCode();
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(64);
if (serverNode != null) {
sb.append("server:").append(serverNode);
} else {
sb.append("server:").append("NULL");
}
if (clientNode != null) {
sb.append(", client:").append(clientNode);
} else {
sb.append(", client:").append("NULL");
}
if (this.isVirtual()) {
sb.append(", virtual");
}
return sb.toString();
}
/**
* 连接关闭码
*/
public enum CloseCode {
/**
* 没有提供原因码
*/
NO_CODE((byte) 1),
/**
* 读异常
*/
READ_ERROR((byte) 2),
/**
* 写异常
*/
WRITER_ERROR((byte) 3),
/**
* 解码异常
*/
DECODE_ERROR((byte) 4),
/**
* 通道未打开
*/
CHANNEL_NOT_OPEN((byte) 5),
/**
* 读到的数据长度是0
*/
READ_COUNT_IS_ZERO((byte) 6),
/**
* 对方关闭了连接
*/
CLOSED_BY_PEER((byte) 7),
/**
* 读到的数据长度小于-1
*/
READ_COUNT_IS_NEGATIVE((byte) 8),
/**
* 写数据长度小于0
*/
WRITE_COUNT_IS_NEGATIVE((byte) 9),
/**
* 心跳超时
*/
HEARTBEAT_TIMEOUT((byte) 10),
/**
* 连接失败
*/
CLIENT_CONNECTION_FAIL((byte) 80),
/**
* SSL握手时发生异常
*/
SSL_ERROR_ON_HANDSHAKE((byte) 50),
/**
* SSL session关闭了
*/
SSL_SESSION_CLOSED((byte) 51),
/**
* SSL加密时发生异常
*/
SSL_ENCRYPTION_ERROR((byte) 52),
/**
* SSL解密时发生异常
*/
SSL_DECRYPT_ERROR((byte) 53),
/**
* 供用户使用
*/
USER_CODE_0((byte) 100),
/**
* 供用户使用
*/
USER_CODE_1((byte) 101),
/**
* 供用户使用
*/
USER_CODE_2((byte) 102),
/**
* 供用户使用
*/
USER_CODE_3((byte) 103),
/**
* 供用户使用
*/
USER_CODE_4((byte) 104),
/**
* 供用户使用
*/
USER_CODE_5((byte) 105),
/**
* 供用户使用
*/
USER_CODE_6((byte) 106),
/**
* 供用户使用
*/
USER_CODE_7((byte) 107),
/**
* 供用户使用
*/
USER_CODE_8((byte) 108),
/**
* 供用户使用
*/
USER_CODE_9((byte) 109),
/**
* 供用户使用
*/
USER_CODE_10((byte) 110),
/**
* 初始值
*/
INIT_STATUS((byte) 199),
/**
* 其它异常
*/
OTHER_ERROR((byte) 200),
;
final byte value;
CloseCode(Byte value) {
this.value = value;
}
public static CloseCode from(byte value) {
CloseCode[] values = CloseCode.values();
for (CloseCode v : values) {
if (v.value == value) {
return v;
}
}
return null;
}
public byte getValue() {
return value;
}
}
public static class CloseMeta {
public Throwable throwable;
public String remark;
public boolean isNeedRemove;
public Throwable getThrowable() {
return throwable;
}
public void setThrowable(Throwable throwable) {
this.throwable = throwable;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public boolean isNeedRemove() {
return isNeedRemove;
}
public void setNeedRemove(boolean isNeedRemove) {
this.isNeedRemove = isNeedRemove;
}
}
}