基于surging 的木舟平台如何通过HTTP网络组件接入设备

一、概述

      上篇文章介绍了木舟如何上传模块热部署,那么此篇文章将介绍如何利用HTTP网络组件接入设备,那么有些人会问木舟又是什么,是什么架构为基础,能做什么呢?

       木舟 (Kayak) 是什么?

       木舟(Kayak)是基于.NET6.0软件环境下的surging微服务引擎进行开发的, 平台包含了微服务和物联网平台。支持异步和响应式编程开发,功能包含了物模型,设备,产品,网络组件的统一管理和微服务平台下的注册中心,服务路由,模块,中间服务等管理。还有多协议适配(TCP,MQTT,UDP,CoAP,HTTP,Grpc,websocket,rtmp,httpflv,webservice,等),通过灵活多样的配置适配能够接入不同厂家不同协议等设备。并且通过设备告警,消息通知,数据可视化等功能。能够让你能快速建立起微服务物联网平台系统。

     那么下面就为大家介绍如何从创建组件、协议、设备网关,设备到设备网关接入,再到设备数据上报,把整个流程通过此篇文章进行阐述。

二、网络组件

1.编辑创建HTTP协议的网络组件,可以选择共享配置和独立配置(独立配置是集群模式),然后可以选择开启swagger和webservice.

 开启成功后,可以看看swagger 是否可以访问

 又或者是访问一下中间服务,以上篇文章上传的Testapi 模块为例:

 三、自定义协议

  • 如何创建自定义协议模块

如果是网络编程开发,必然会涉及到协议报文的编码解码处理,那么对于平台也是做到了灵活处理,首先是协议模块创建,通过以下代码看出协议模块可以添加协议说明md文档, 身份鉴权处理,HTTP路由,消息编解码,元数据配置。下面一一介绍如何进行编写

  public class Demo5ProtocolSupportProvider : ProtocolSupportProvider
    {
        public override IObservable<ProtocolSupport> Create(ProtocolContext context)
        {
      var support = new ComplexProtocolSupport();
    support.Id = "demo5";
    support.Name = "演示协议5";
    support.Description = "演示协议5"; support.AddDocument(MessageTransport.Http,
"Document/document-http.md");     support.AddAuthenticator(MessageTransport.Http, new Demo5Authenticator());      support.AddRoutes(MessageTransport.Http, new List<BasicMessageCodec>() {    BasicMessageCodec.DeviceOnline,    BasicMessageCodec.ReportProperty,   BasicMessageCodec.WriteProperty,   BasicMessageCodec.ReadProperty, BasicMessageCodec.Event }.Select(p => HttpDescriptor.Instance(p.Pattern) .GroupName(p.Route.GroupName()) .HttpMethod(p.Route.HttpMethod()) .Path(p.Pattern) .ContentType(MediaType.ToString(MediaType.ApplicationJson)) .Description(p.Route.Description()) .Example(p.Route.Example()) ).ToList()); support.AddMessageCodecSupport(MessageTransport.Http, () => Observable.Return(new HttpDeviceMessageCodec())); support.AddConfigMetadata(MessageTransport.Http, _httpConfig); return Observable.Return(support); } }

1. 添加协议说明文档如代码: support.AddDocument(MessageTransport.Http, "Document/document-http.md");,文档仅支持 markdown文件,如下所示

 

### 使用HTTP推送设备数据

上报属性例子: 

POST /{productId}/{deviceId}/properties/report
Authorization:{产品或者设备中配置的Token}
Content-Type: application/json

{
 "properties":{
   "temp":11.5
 }
}

上报事件例子:

POST /{productId}/{deviceId}/event/{eventId}
Authorization:{产品或者设备中配置的Token}
Content-Type: application/json

{
 "data":{
   "createtime": ""
 }
}

 

2. 添加身份鉴权如代码: support.AddAuthenticator(MessageTransport.Http, new Demo5Authenticator()) ,自定义身份鉴权Demo5Authenticator 代码如下:

 

       public class Demo5Authenticator : IAuthenticator
       {
           public IObservable<AuthenticationResult> Authenticate(IAuthenticationRequest request, IDeviceOperator deviceOperator)
           {
               var result = Observable.Return<AuthenticationResult>(default);
               if (request is DefaultAuthRequest)
               {
                   var authRequest = request as DefaultAuthRequest;
                   deviceOperator.GetConfig(authRequest.GetTransport()==MessageTransport.Http?"token": "key").Subscribe(  config =>
                   {
                       var password = config.Convert<string>();
                       if (authRequest.Password.Equals(password))
                       {
                           result= result.Publish(AuthenticationResult.Success(authRequest.DeviceId));
                       }
                       else
                       {
                           result= result.Publish(AuthenticationResult.Failure(StatusCode.CUSTOM_ERROR, "验证失败,密码错误"));
                       }
                   });
               }
               else
               result = Observable.Return<AuthenticationResult>(AuthenticationResult.Failure(StatusCode.CUSTOM_ERROR, "不支持请求参数类型"));
               return result;
           }

           public IObservable<AuthenticationResult> Authenticate(IAuthenticationRequest request, IDeviceRegistry registry)
           {
               var result = Observable.Return<AuthenticationResult>(default);
               var authRequest = request as DefaultAuthRequest;
               registry
                 .GetDevice(authRequest.DeviceId)
                 .Subscribe(async p => {

                    var config=  await p.GetConfig(authRequest.GetTransport() == MessageTransport.Http ? "token" : "key");
                     var password= config.Convert<string>();
                    if(authRequest.Password.Equals(password))
                     {
                         result= result.Publish(AuthenticationResult.Success(authRequest.DeviceId));
                     }
                     else
                     {
                         result= result.Publish(AuthenticationResult.Failure(StatusCode.CUSTOM_ERROR, "验证失败,密码错误"));
                     }
                 });
               return result;
           }
       }

 

3. 添加Http路由代码support.AddRoutes,那么如何配置呢,代码如下:

 

    public static BasicMessageCodec ReportProperty =>
 new BasicMessageCodec("/*/properties/report", typeof(ReadPropertyMessage), route => route.GroupName("属性上报")
                     .HttpMethod("Post")
                     .Description("上报物模型属性数据")
                     .Example("{\"properties\":{\"属性ID\":\"属性值\"}}"));

 

4.添加消息编解码代码 support.AddMessageCodecSupport(MessageTransport.Http, () => Observable.Return(new HttpDeviceMessageCodec())), 可以自定义编解码,HttpDeviceMessageCodec代码如下:

 

  public class HttpDeviceMessageCodec : DeviceMessageCodec
  {
      private readonly MessageTransport _transport;

      public HttpDeviceMessageCodec() : this(MessageTransport.Http)
      {
      }

      private static DefaultHttpResponseMessage Unauthorized(String msg)
      {
          return new DefaultHttpResponseMessage()
                  .ContentType(MediaType.ApplicationJson)
                  .Body("{\"success\":false,\"code\":\"unauthorized\",\"message\":\"" + msg + "\"}")
                  .Status(HttpStatus.AuthorizationFailed);
      }

      private static DefaultHttpResponseMessage BadRequest()
      {
          return new DefaultHttpResponseMessage()
                  .ContentType(MediaType.ApplicationJson)
                  .Body("{\"success\":false,\"code\":\"bad_request\"}")
                  .Status(HttpStatus.RequestError);
      }

      public HttpDeviceMessageCodec(MessageTransport transport)
      {
          _transport = transport;
      }
      public override IObservable<IDeviceMessage> Decode(MessageDecodeContext context)
      {
          if (context.GetMessage() is HttpRequestMessage)
          {
              return DecodeHttpRequestMessage(context);
          }
          return Observable.Return<IDeviceMessage>(default);
      }


      public override  IObservable<IEncodedMessage> Encode(MessageEncodeContext context)
      {
          return Observable.Return<IEncodedMessage>(default);
      }



      private IObservable<IDeviceMessage> DecodeHttpRequestMessage(MessageDecodeContext context)
      {
          var result = Observable.Return<IDeviceMessage>(default);
          var message = (HttpExchangeMessage)context.GetMessage();

          Header? header = message.Request.GetHeader("Authorization");
          if (header == null || header.Value == null || header.Value.Length == 0)
          {
              message
                   .Response(Unauthorized("Authorization header is required")).ToObservable()
                   .Subscribe(p => result = result.Publish(default));

              return result;
          }
          var httpToken = header.Value[0];

          var paths = message.Path.Split("/");
          if (paths.Length == 0)
          {
              message.Response(BadRequest()).ToObservable()
                 .Subscribe(p => result = result.Publish(default));
              return result;
          }
          String deviceId = paths[1];
          context.GetDevice(deviceId).Subscribe(async deviceOperator =>
          {
              var config = deviceOperator==null?null: await deviceOperator.GetConfig("token");
              var token = config?.Convert<string>();
              if (token == null || !httpToken.Equals(token))
              {
                  await message
                       .Response(Unauthorized("Device not registered or authentication failed"));
              }
              else
              {
                  var deviceMessage = await DecodeBody(message, deviceId);
                  if (deviceMessage != null)
                  {
                      await message.Success("{\"success\":true,\"code\":\"success\"}");
                      result = result.Publish(deviceMessage);
                  }
                  else
                  {
                      await message.Response(BadRequest());
                  }
              }
          });
          return result;
      }

      private async Task<IDeviceMessage> DecodeBody(HttpExchangeMessage message,string deviceId)
      {

          byte[] body = new byte[message.Payload.ReadableBytes];
          message.Payload.ReadBytes(body);
          var deviceMessage = await TopicMessageCodec.Dodecode(message.Path, body);
          deviceMessage.DeviceId = deviceId;
          return deviceMessage;
      }
  }

 

5.添加元数据配置代码 support.AddConfigMetadata(MessageTransport.Http, _httpConfig);  _httpConfig代码如下

        private readonly DefaultConfigMetadata _httpConfig = new DefaultConfigMetadata(
        "Http认证配置"
        , "token为http认证令牌")
        .Add("token", "token", "http令牌", StringType.Instance);
  • 如何加载协议模块,协议模块包含了协议模块支持添加引用加载和上传热部署加载。                           

   引用加载模块

 上传热部署协议模块

 四、设备网关

创建设备网关

 五、产品管理

以下是添加产品。

 设备接入

 六、设备管理

添加设备

 HTTP认证配置

 创建告警阈值

 七、测试

 利用Postman 进行测试,以调用http://127.0.0.1:168/{productid}/{deviceid}/properties/report 为例,Authorization设置:123456

1.正常数据测试

 

 

 2. 如果是选用Get方式调用,会因为找不到ServiceRoute而返回错误。

 3. 把Authorization改成1111,会返回错误Device not registered or authentication failed,从而上报数据失败

 以上上传的数据可以在设备信息-》运行状态中查看

 告警信息可以在超临界数据中查看

  七、总结

 以上是基于HTTP网络组件设备接入,现有平台网络组件可以支持TCP,MQTT,UDP,CoAP,HTTP,Grpc,websocket,rtmp,httpflv,webservice,tcpclient, 而设备接入支持TCP,UDP,HTTP网络组件,后面会陆续添加支持所有网络组件接入,后面我也会陆续介绍其它网路组件设备接入 ,  然后定于11月20日发布1.0测试版平台。也请大家到时候关注捧场。

 

posted @ 2024-11-05 14:55  fanly11  阅读(93)  评论(0编辑  收藏  举报