一、概述
上篇文章介绍了木舟通过HTTP网络组件接入设备，那么此篇文章将介绍如何利用Tcp或者UDP网络组件接入设备.
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Tcp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). 下图是解析方式选择了自定义脚本进行解码操作。
还可以选择其它解析方式：如下图
2. 编辑创建UDP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). 可以选择单播或组播。
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，消息编解码，元数据配置。下面一一介绍如何进行编写
public class Demo3ProtocolSupportProvider : ProtocolSupportProvider { public override IObservable<ProtocolSupport> Create(ProtocolContext context) { var support = new ComplexProtocolSupport(); support.Id = "demo_3"; support.Name = "演示协议3"; support.Description = "演示协议3"; support.AddAuthenticator(MessageTransport.Tcp, new Demo5Authenticator()); support.AddDocument(MessageTransport.Tcp, "Document/document-tcp.md"); support.Script = "rnvar decode=function(buffer)rn{rn parser.Fixed(5).Handler(rn function(buffer){ rn var bytes = BytesUtils.GetBytes(buffer,1,4);rn var len = BytesUtils.LeStrToInt(bytes,1,4);//2. 获取消息长度.rn var buf = BytesUtils.Slice(buffer,0,5); rn parser.Fixed(len).Result(buf); rn }).Handler(function(buffer){ parser.Result(buffer).Complete(); rn }rn )rn}rnvar encode=function(buffer)rn{rn}"; support.AddMessageCodecSupport(MessageTransport.Tcp, () => Observable.Return(new ScriptDeviceMessageCodec(support.Script))); support.AddConfigMetadata(MessageTransport.Tcp, _tcpConfig); support.AddAuthenticator(MessageTransport.Udp, new Demo5Authenticator()); support.Script = "rnvar decode=function(buffer)rn{rn parser.Fixed(5).Handler(rn function(buffer){ rn var bytes = BytesUtils.GetBytes(buffer,1,4);rn var len = BytesUtils.LeStrToInt(bytes,1,4);//2. 获取消息长度.rn var buf = BytesUtils.Slice(buffer,0,5); rn parser.Fixed(len).Result(buf); rn }).Handler(function(buffer){ parser.Result(buffer).Complete(); rn }rn )rn}rnvar encode=function(buffer)rn{rn}"; support.AddMessageCodecSupport(MessageTransport.Udp, () => Observable.Return(new ScriptDeviceMessageCodec(support.Script))); support.AddConfigMetadata(MessageTransport.Udp, _udpConfig); return Observable.Return(support); } }
1. 添加协议说明文档如代码: support.AddDocument(MessageTransport.Tcp, "Document/document-tcp.md");，文档仅支持 markdown文件，如下所示
### 认证说明 CONNECT报文: ```text clientId: 设备ID password: md5(timestamp+"|"+secureKey) ```
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.添加消息编解码代码 support.AddMessageCodecSupport(MessageTransport.Tcp, () => Observable.Return(new ScriptDeviceMessageCodec(support.Script)));， 可以自定义编解码，ScriptDeviceMessageCodec代码如下：
using DotNetty.Buffers; using Jint; using Jint.Parser; using Microsoft.CodeAnalysis.Scripting; using Microsoft.Extensions.Logging; using RulesEngine.Models; using Surging.Core.CPlatform.Codecs.Core; using Surging.Core.CPlatform.Utilities; using Surging.Core.DeviceGateway.Runtime.Device.Message; using Surging.Core.DeviceGateway.Runtime.Device.Message.Event; using Surging.Core.DeviceGateway.Runtime.Device.Message.Property; using Surging.Core.DeviceGateway.Runtime.Device.MessageCodec; using Surging.Core.DeviceGateway.Runtime.RuleParser.Implementation; using Surging.Core.DeviceGateway.Utilities; using System; using System.Collections.Generic; using System.Linq; using System.Reactive.Linq; using System.Reactive.Subjects; using System.Runtime; using System.Text; using System.Text.Json; using System.Text.RegularExpressions; using System.Threading.Tasks; namespace Surging.Core.DeviceGateway.Runtime.Device.Implementation { public class ScriptDeviceMessageCodec : DeviceMessageCodec { public string GlobalVariable { get; private set; } public string EncoderScript { get; private set; } public string DecoderScript { get; private set; } public IObservable<Task<RulePipePayloadParser>> _rulePipePayload; private readonly ILogger<ScriptDeviceMessageCodec> _logger; public ScriptDeviceMessageCodec(string script) { _logger = ServiceLocator.GetService<ILogger<ScriptDeviceMessageCodec>>(); RegexOptions options = RegexOptions.Singleline | RegexOptions.IgnoreCase; string matchStr = Regex.Match(script, @"vars*[w$]*s*=.*function.*(.*)s*{[sS]*}.*?v", options).Value; if (!string.IsNullOrEmpty(matchStr)) { DecoderScript = matchStr.TrimEnd('v'); DecoderScript= Regex.Replace(DecoderScript, @"vars*[w$]*s*=[.r|n|t|s]*?(function)s*([w$]*s*)s*{", "", RegexOptions.IgnoreCase); DecoderScript= DecoderScript.Slice(0, DecoderScript.LastIndexOf('}')); EncoderScript = script.Replace(DecoderScript, ""); } var matchStr1 = Regex.Matches(script, @"(?<=var).*?(?==)|(?=;)|(?=v)", options).FirstOrDefault(p=>!string.IsNullOrEmpty(p.Value))?.Value; if (!string.IsNullOrEmpty(matchStr1)) { GlobalVariable = matchStr1.TrimEnd(';'); } var ruleWorkflow = new RuleWorkflow(DecoderScript); _rulePipePayload= Observable.Return( GetParser( GetRuleEngine(ruleWorkflow), ruleWorkflow)); } public override IObservable<IDeviceMessage> Decode(MessageDecodeContext context) { var result = Observable.Return<IDeviceMessage>(null); _rulePipePayload.Subscribe(async p => { var parser = await p; parser.Build(context.GetMessage().Payload); parser.HandlePayload().Subscribe(async p => { try { var headerBuffer=parser.GetResult().FirstOrDefault(); var buffer = parser.GetResult().LastOrDefault(); var str = buffer.GetString(buffer.ReaderIndex, buffer.ReadableBytes, Encoding.UTF8); var session = await context.GetSession(); if (session?.GetOperator() == null) { var onlineMessage = JsonSerializer.Deserialize<DeviceOnlineMessage>(str); result = result.Publish(onlineMessage); } else { var messageType = headerBuffer.GetString(0, 1, Encoding.UTF8); if (Enum.Parse<MessageType>(messageType.ToString()) == MessageType.READ_PROPERTY) { var onlineMessage = JsonSerializer.Deserialize<ReadPropertyMessage>(str); result = result.Publish(onlineMessage); } else if (Enum.Parse<MessageType>(messageType.ToString()) == MessageType.EVENT) { var onlineMessage = JsonSerializer.Deserialize<EventMessage>(str); result = result.Publish(onlineMessage); } } } catch (Exception e) { } finally { p.Release(); parser.Close(); } }); }); return result; } public override IObservable<IEncodedMessage> Encode(MessageEncodeContext context) { context.Reply(((RespondDeviceMessage<IDeviceMessageReply>)context.Message).NewReply().Success(true)); return Observable.Empty<IEncodedMessage>(); } private RulesEngine.RulesEngine GetRuleEngine(RuleWorkflow ruleWorkflow) { var reSettingsWithCustomTypes = new ReSettings { CustomTypes = new Type[] { typeof(RulePipePayloadParser) } }; var result = new RulesEngine.RulesEngine(new Workflow[] { ruleWorkflow.GetWorkflow() }, null, reSettingsWithCustomTypes); return result; } private async Task<RulePipePayloadParser> GetParser(RulesEngine.RulesEngine engine, RuleWorkflow ruleWorkflow) { var payloadParser = new RulePipePayloadParser(); var ruleResult = await engine.ExecuteActionWorkflowAsync(ruleWorkflow.WorkflowName, ruleWorkflow.RuleName, new RuleParameter[] { new RuleParameter("parser", payloadParser) }); if (ruleResult.Exception != null && _logger.IsEnabled(LogLevel.Error)) _logger.LogError(ruleResult.Exception, ruleResult.Exception.Message); return payloadParser; } } }
4.添加元数据配置代码 support.AddConfigMetadata(MessageTransport.Tcp, _tcpConfig); _tcpConfig代码如下:
private readonly DefaultConfigMetadata _tcpConfig = new DefaultConfigMetadata( "TCP认证配置" , "key为tcp认证密钥") .Add("tcp_auth_key", "key", "TCP认证KEY", StringType.Instance);
_udpConfig代码如下:
private readonly DefaultConfigMetadata _udpConfig = new DefaultConfigMetadata( "udp认证配置" , "key为udp认证密钥") .Add("udp_auth_key", "key", "TCP认证KEY", StringType.Instance);
- 如何加载协议模块，协议模块包含了协议模块支持自定义脚本、添加引用、上传热部署加载。
自定义脚本，选择了自定义脚本解析，如果本地有设置消息编解码，会进行覆盖
引用加载模块
上传热部署协议模块
首先利用以下命令发布模块：
然后打包上传协议模块
四、设备网关
创建TCP设备网关
创建UDP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
Tcp认证配置
添加告警阈值
事件定义
七、测试
利用测试工具进行Tcp测试，以调用tcp://127.0.0.1:993为例，
测试设备上线
字符串： 293 {"MessageType":2,"Headers":{"token":"123456"},"DeviceId":"scro-34","Timestamp":1726540220311}
说明：第一个字符表示类型，第二个表示消息内容长度
16进制:32393300007b224d65737361676554797065223a322c2248656164657273223a7b22746f6b656e223a22313233343536227d2c224465766963654964223a227363726f2d3334222c2254696d657374616d70223a313732363534303232303331317d
结果如下：
测试上报属性
字符串：195 {"MessageType":1,"Properties":{"temp":"38.24"},"DeviceId":"scro-34","Timestamp":1726560007339}
16进制:31393500007b224d65737361676554797065223a312c2250726f70657274696573223a7b2274656d70223a2233382e3234227d2c224465766963654964223a227363726f2d3334222c2254696d657374616d70223a313732363536303030373333397d
结果如下：
测试事件
字符串：8307 {"MessageType":8,"Data":{"deviceId":"scro-34","level":"alarm","alarmTime":"2024-11-07 19:47:00","from":"device","alarmType":"设备告警","coordinate":"33.345,566.33","createTime":"2024-11-07 19:47:00","desc":"温度超过阈值"},"DeviceId":"scro-34","EventId":"alarm","Timestamp":1726540220311}
16进制: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
结果如下：
可以在平台界面看到上报的数据
利用测试工具进行Udp测试，以调用udp://127.0.0.1:267为例，
测试设备上线
字符串：295 {"MessageType":2,"Headers":{"token":"123456"},"DeviceId":"srco-2555","Timestamp":1726540220311}
说明：第一个字符表示类型，第二个表示消息内容长度
16进制:32393500007b224d65737361676554797065223a322c2248656164657273223a7b22746f6b656e223a22313233343536227d2c224465766963654964223a227372636f2d32353535222c2254696d657374616d70223a313732363534303232303331317d
结果如下：
测试上报属性
字符串：197 {"MessageType":1,"Properties":{"temp":"38.24"},"DeviceId":"srco-2555","Timestamp":1726560007339}
说明：第一个字符表示类型，第二个表示消息内容长度
16进制:31393700007b224d65737361676554797065223a312c2250726f70657274696573223a7b2274656d70223a2233382e3234227d2c224465766963654964223a227372636f2d32353535222c2254696d657374616d70223a313732363536303030373333397d
结果如下：
测试事件
字符串：8301 {"MessageType":8,"Data":{"deviceId":"srco-2555","level":"alarm","alarmTime":"2024-11-07 19:47:00","from":"device","alarmType":"设备告警","coordinate":"33.345,566.33","createTime":"2024-11-07 19:47:00","desc":"温度超过阈值"},"DeviceId":"srco-2555","EventId":"alarm","Timestamp":1726540220311}
说明：第一个字符表示类型，第二个表示消息内容长度
16进制: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
结果如下：
可以在平台界面看到上报的数据
七、总结
以上是基于Tcp和UDP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，年前尽量完成国标28181和MQTT，也会开始着手开始开发规则引擎， 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。
