org.jetlinks.core.message.codec

类 InterceptorDeviceMessageCodec

java.lang.Object

org.jetlinks.core.message.codec.InterceptorDeviceMessageCodec

所有已实现的接口:

DeviceMessageCodec, DeviceMessageDecoder, DeviceMessageEncoder

public class InterceptorDeviceMessageCodec
extends Object
implements DeviceMessageCodec

从以下版本开始:

1.0

作者:

bsetfeng, zhouhao

构造器概要

构造器

构造器和说明
InterceptorDeviceMessageCodec(DeviceMessageCodec codec)

方法概要

限定符和类型	方法和说明
reactor.core.publisher.Flux<? extends Message>	decode(MessageDecodeContext context) 在服务器收到设备或者网络组件中发来的消息时，会调用协议包中的此方法来进行解码， 将数据EncodedMessage转为平台的统一消息DeviceMessage //解码并返回一个消息 public Mono<DeviceMessage> decode(MessageDecodeContext context){ EncodedMessage message = context.getMessage(); byte[] payload = message.payloadAsBytes();//上报的数据 DeviceMessage message = doEncode(payload); return Mono.just(message); } //解码并返回多个消息 public Flux<DeviceMessage> decode(MessageDecodeContext context){ EncodedMessage message = context.getMessage(); byte[] payload = message.payloadAsBytes();//上报的数据 List<DeviceMessage> messages = doEncode(payload); return Flux.fromIterable(messages); } //解码,回复设备并返回一个消息 public Mono<DeviceMessage> decode(MessageDecodeContext context){ EncodedMessage message = context.getMessage(); byte[] payload = message.payloadAsBytes();//上报的数据 DeviceMessage message = doEncode(payload); //解码 FromDeviceMessageContext ctx = (FromDeviceMessageContext)context; EncodedMessage msg = createReplyMessage(); //构造回复 return ctx .getSession() .send(msg) //发送回复 .thenReturn(message); }
reactor.core.publisher.Flux<? extends EncodedMessage>	encode(MessageEncodeContext context) 编码,将消息进行编码,用于发送到设备端.
Transport	getSupportTransport()
void	register(DeviceMessageCodecInterceptor interceptor)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.jetlinks.core.message.codec.DeviceMessageCodec

getDescription

构造器详细资料

InterceptorDeviceMessageCodec

public InterceptorDeviceMessageCodec(DeviceMessageCodec codec)

方法详细资料

getSupportTransport

public Transport getSupportTransport()

指定者:

getSupportTransport 在接口中 DeviceMessageCodec

返回:

返回支持的传输协议

另请参阅:

DefaultTransport

register

public void register(DeviceMessageCodecInterceptor interceptor)

encode

@Nonnull
public reactor.core.publisher.Flux<? extends EncodedMessage> encode(@Nonnull
                                                                             MessageEncodeContext context)

从接口复制的说明: DeviceMessageEncoder

编码,将消息进行编码,用于发送到设备端. 平台在发送指令给设备时,会调用协议包中设置的此方法,将平台消息DeviceMessage转为设备能理解的消息EncodedMessage. 例如:

 //返回单个消息给设备,多个使用Flux<EncodedMessage>作为返回值
 public Mono<EncodedMessage> encode(MessageEncodeContext context){

     return Mono.just(doEncode(context.getMessage()));

 }

 //忽略发送给设备,直接返回结果给指令发送者
 public Mono<EncodedMessage> encode(MessageEncodeContext context){
    DeviceMessage message = (DeviceMessage)context.getMessage();

    return context
      .reply(handleMessage(message)) //返回结果给指令发送者
      .then(Mono.empty())
 }

 

如果要串行发送数据,可以参考使用ParallelIntervalHelper工具类

指定者:

encode 在接口中 DeviceMessageEncoder

参数:

context - 消息上下文

返回:

编码结果

另请参阅:

MqttMessage, Message, 读取设备属性, 修改设备属性, 调用设备功能, 子设备消息, DeviceMessageEncodeInterceptor, ParallelIntervalHelper

decode

@Nonnull
public reactor.core.publisher.Flux<? extends Message> decode(@Nonnull
                                                                      MessageDecodeContext context)

从接口复制的说明: DeviceMessageDecoder

在服务器收到设备或者网络组件中发来的消息时，会调用协议包中的此方法来进行解码， 将数据EncodedMessage转为平台的统一消息DeviceMessage

 //解码并返回一个消息
 public Mono<DeviceMessage> decode(MessageDecodeContext context){

  EncodedMessage message = context.getMessage();
  byte[] payload = message.payloadAsBytes();//上报的数据

  DeviceMessage message = doEncode(payload);

  return Mono.just(message);
 }

 //解码并返回多个消息
 public Flux<DeviceMessage> decode(MessageDecodeContext context){

  EncodedMessage message = context.getMessage();
  byte[] payload = message.payloadAsBytes();//上报的数据

  List<DeviceMessage> messages = doEncode(payload);

  return Flux.fromIterable(messages);
 }

 //解码,回复设备并返回一个消息
 public Mono<DeviceMessage> decode(MessageDecodeContext context){

  EncodedMessage message = context.getMessage();
  byte[] payload = message.payloadAsBytes();//上报的数据

  DeviceMessage message = doEncode(payload); //解码

  FromDeviceMessageContext ctx = (FromDeviceMessageContext)context;

  EncodedMessage msg = createReplyMessage(); //构造回复

  return ctx
     .getSession()
     .send(msg) //发送回复
     .thenReturn(message);
 }

 

指定者:

decode 在接口中 DeviceMessageDecoder

参数:

context - 消息上下文

返回:

解码结果

另请参阅:

MqttMessage, HttpExchangeMessage, CoapExchangeMessage, DeviceMessageReply, ReadPropertyMessageReply, FunctionInvokeMessageReply, ChildDeviceMessageReply, DeviceOnlineMessage, DeviceOfflineMessage, DeviceMessageDecodeInterceptor