c#运用ZeroMq发布订阅和RPC函数代理的优点结合成一个新的实用的通讯

陆菊 · 5 天前

想用ZeroMq的发布订阅者模式，又不想写一大串switch case？
想用RPC函数代理机制，又想多对多进行通讯？
下面就结合二者的优点重新封装一套通讯模块
一、先写ZeroMq的发布订阅这模式

先做个代理，负责分发事件，代码如下：

1 // 1. 初始化代理（Proxy）
2 var xSubSocket = new XSubscriberSocket("@tcp://127.0.0.1:61225");
3 var xPubSocket = new XPublisherSocket("@tcp://127.0.0.1:52216");
4 {
5 _proxy = new Proxy(xSubSocket, xPubSocket);
6 // 2. 启动代理（异步运行）
7 var proxyTask = Task.Run(() => _proxy.Start());
8 }

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封装客户端代码

1 using Communication.Nmq.Dto;
2 using System;
3 using System.Collections.Generic;
4
5 namespace Communication.Nmq
6 {
7 public class MqClientMain
8 {
9 public readonly static MqClientMain Instance = new MqClientMain();
10 internal Transceiver _client;
11 private List<MqType> _subscriberList = new();
12 private List<MqType> _unSubscriberList = new();
13 private readonly MethodManager _methodManager = new MethodManager();
14 private bool _isListnerAll;
15 private MqType _owner;
16 protected MqClientMain() { }
17
18
19 /// <summary>
20 /// 函数反射监听(可监听多个)
21 /// </summary>
22 /// <param name="targetInstance"></param>
23 /// <param name="targgetMonitorList"></param>
24 /// <returns></returns>
25 public MqClientMain ProxyAddInstanceMethods<InterfaceType>(InterfaceType targetInstance, params MqType[] targgetMonitorList) where InterfaceType : class
26 {
27 foreach (MqType targgetMonitor in targgetMonitorList)
28 {
29 if (!_subscriberList.Contains(targgetMonitor))
30 _subscriberList.Add(targgetMonitor);
31 }
32
33 _methodManager.AddInstanceMethods(targetInstance);
34 return this;
35 }
36
37
38 /// <summary>
39 ///额外增加事件(可监听多个)
40 /// </summary>
41 /// <param name="targetInstance"></param>
42 /// <param name="mathName"></param>
43 /// <param name="targgetMonitor"></param>
44 /// <returns></returns>
45 public MqClientMain ProxyAddMethods(object targetInstance, string[] mathName, params MqType[] targgetMonitorList)
46 {
47 foreach (MqType targgetMonitor in targgetMonitorList)
48 {
49 if (!_subscriberList.Contains(targgetMonitor))
50 _subscriberList.Add(targgetMonitor);
51 }
52 _methodManager.AddMethods(mathName, targetInstance);
53 return this;
54 }
55
56 /// <summary>
57 /// 开始通讯
58 /// </summary>
59 /// <param name="owner">注册者类型(你是谁)</param>
60 public virtual void Start(MqType owner)
61 {
62 if (_client == null)
63 {
64 if (_isListnerAll)
65 {
66 //监听所有会监听到自己，所以不监听自己
67 _subscriberList.Remove(owner);
68 }
69 _owner = owner;
70 _client = new Transceiver(owner, _subscriberList, _unSubscriberList, _methodManager);
71
72
73 }
74 }
75
76 public void Stop()
77 {
78 _client.Dispose();
79 }
80
81 /// <summary>
82 /// 发布事件
83 /// </summary>
84 /// <param name="msg"></param>
85 public void MqSendMessage(string msg)
86 {
87 if (_client != null)
88 {
89 _client.SendMessage(msg);
90 }
91 }
92
93 /// <summary>
94 /// 代理列表
95 /// </summary>
96 private Dictionary<Type, object> _proxyList = new();
97 /// <summary>
98 /// 获取代理
99 /// </summary>
100 /// <typeparam name="T"></typeparam>
101 /// <returns></returns>
102 public T GetInterfaceProxy<T>() where T : class
103 {
104 if (_client == null)
105 return null;
106 if (!_proxyList.ContainsKey(typeof(T)))
107 _proxyList.Add(typeof(T), InterfaceProxy<T>.Create(_client));
108 return (T)_proxyList[typeof(T)];
109 }
110 }
111 }

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View Code二、封装一下RPC的函数代理

封装一个接口代理类

1 internal class InterfaceProxy<TInterface> : DispatchProxy where TInterface : class
2 {
3 private static Transceiver _client;
4
5 private static JsonSerializerOptions _options = new JsonSerializerOptions
6 {
7 WriteIndented = true, // 让 JSON 格式更加可读
8 Converters = { new JsonStringEnumConverter() } // 使用字符串枚举转换器
9 };
10 internal static TInterface Create(Transceiver client)
11 {
12 object proxy = Create<TInterface, InterfaceProxy<TInterface>>();
13 _client = client;
14 return (TInterface)proxy;
15 }
16 protected override object Invoke(MethodInfo targetMethod, object[] args)
17 {
18 var message = new ProxyMessage
19 {
20 InterfaceType = typeof(TInterface).FullName,
21 Method = targetMethod.Name,
22 Parameters = args,
23 };
24 _client.SendMessage(System.Text.Json.JsonSerializer.Serialize(message, _options));
25 return targetMethod.ReturnType;
26 }
27 }

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复制一份RPC封装的获取类里面的所有方法

1 public class MethodManager
2 {
3 private readonly string[] instanceMethodsOnObject = new string[4] { "Equals", "GetHashCode", "GetType", "ToString" };
4
5 /// <summary>
6 /// 获取一个线程安全的字典，其中键为字符串（不区分大小写），值为另一个线程安全的字典。
7 /// 内部字典的键为整数，值为 Method 对象。
8 /// </summary>
9 public ConcurrentDictionary<string, ConcurrentDictionary<int, Method>> Methods { get; } = new ConcurrentDictionary<string, ConcurrentDictionary<int, Method>>(StringComparer.OrdinalIgnoreCase);
10
11 /// <summary>
12 /// 根据方法名和参数数量获取方法
13 /// </summary>
14 /// <param name="name">方法名</param>
15 /// <param name="paramCount">参数数量</param>
16 /// <returns>找到的方法对象，若未找到则返回null</returns>
17 public Method Get(string name, int paramCount)
18 {
19 if (Methods.TryGetValue(name, out var value) && value.TryGetValue(paramCount, out var value2))
20 {
21 return value2;
22 }
23
24 if (name != "*")
25 {
26 return Get("*", 2);
27 }
28
29 return null;
30 }
31
32 /// <summary>
33 /// 向方法集合中添加一个方法。
34 /// 如果指定方法名称不存在于集合中，则创建一个新的ConcurrentDictionary来存储该方法。
35 /// 根据方法的参数信息，特别是参数类型是否为Context以及是否为可选参数，默认值等信息，
36 /// 将方法添加到对应的ConcurrentDictionary中，键为参数的索引（不包括Context类型的参数）。
37 /// </summary>
38 public void Add(Method method)
39 {
40 if (!Methods.ContainsKey(method.Name))
41 {
42 Methods.TryAdd(method.Name, new ConcurrentDictionary<int, Method>());
43 }
44
45 ConcurrentDictionary<int, Method> concurrentDictionary = Methods[method.Name];
46 ParameterInfo[] parameters = method.Parameters;
47 int num = parameters.Length;
48 int num2 = 0;
49 for (int i = 0; i < num; i++)
50 {
51 ParameterInfo parameterInfo = parameters[i];
52 if (typeof(Context).IsAssignableFrom(parameterInfo.ParameterType))
53 {
54 num2 = 1;
55 }
56 else if (parameterInfo.IsOptional && parameterInfo.HasDefaultValue)
57 {
58 concurrentDictionary.AddOrUpdate(i - num2, method, (int key, Method value) => method);
59 }
60 }
61
62 concurrentDictionary.AddOrUpdate(num - num2, method, (int key, Method value) => method);
63 }
64
65 /// <summary>
66 /// 添加一个方法到集合中，使用指定的方法信息、名称和目标对象。
67 /// </summary>
68 /// <param name="methodInfo">方法的信息。</param>
69 /// <param name="name">方法的名称。</param>
70 /// <param name="target">方法的目标对象，默认为null。</param>
71 public void Add(MethodInfo methodInfo, string name, object target = null)
72 {
73 Add(new Method(methodInfo, name, target));
74 }
75
76 /// <summary>
77 /// 添加一个方法到集合中，使用给定的名称、目标对象和别名。
78 /// </summary>
79 /// <param name="name">方法的名称。</param>
80 /// <param name="target">包含方法的对象。</param>
81 /// <param name="alias">方法的别名，如果为空则使用方法名称。</param>
82 public void AddMethod(string name, object target, string alias = "")
83 {
84 MethodInfo[] methods = target.GetType().GetTypeInfo().GetMethods(BindingFlags.Instance | BindingFlags.Public);
85 if (string.IsNullOrEmpty(alias))
86 {
87 alias = name;
88 }
89
90 MethodInfo[] array = methods;
91 foreach (MethodInfo methodInfo in array)
92 {
93 if (methodInfo.Name.Equals(name, StringComparison.OrdinalIgnoreCase))
94 {
95 Add(methodInfo, alias, target);
96 }
97 }
98 }
99
100 /// <summary>
101 /// 向目标对象添加方法。
102 /// </summary>
103 /// <param name="names">方法名称数组。</param>
104 /// <param name="target">目标对象，方法将添加到该对象上。</param>
105 /// <param name="ns">可选的命名空间前缀，用于区分不同来源的方法。</param>
106 public void AddMethods(string[] names, object target, string ns = "")
107 {
108 foreach (string text in names)
109 {
110 if (string.IsNullOrEmpty(ns))
111 {
112 AddMethod(text, target, text);
113 }
114 else
115 {
116 AddMethod(text, target, ns + "_" + text);
117 }
118 }
119 }
120
121 /// <summary>
122 /// 向目标对象添加实例方法。
123 /// </summary>
124 /// <param name="target">目标对象，其实例方法将被添加。</param>
125 /// <param name="ns">可选的命名空间前缀，用于区分方法名。</param>
126 public void AddInstanceMethods(object target, string ns = "")
127 {
128 MethodInfo[] methods = target.GetType().GetTypeInfo().GetMethods(BindingFlags.Instance | BindingFlags.Public);
129 foreach (MethodInfo methodInfo in methods)
130 {
131 if (Array.IndexOf(instanceMethodsOnObject, methodInfo.Name) == -1)
132 {
133 string text = methodInfo.Name;
134 if (!string.IsNullOrEmpty(ns))
135 {
136 text = ns + "_" + text;
137 }
138
139 Add(methodInfo, text, target);
140 }
141 }
142 }
143 }

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通过反射执行方法

1 using Communication.Nmq.Dto;
2 using NetMQ;
3 using NetMQ.Sockets;
4 using System;
5 using System.Collections.Generic;
6 using System.Linq;
7 using Communication.Utils;
8 using Newtonsoft.Json;
9
10 namespace Communication.Nmq
11 {
12 internal class Transceiver : IDisposable
13 {
14 private List<MqType> SubscribeTypes;
15 private List<MqType> UnSubscribleTypes;
16 private MethodManager FunListeners;
17 private string Owner;
18 private PublisherSocket ClientPub;
19 private SubscriberSocket ClientSub;
20 private NetMQPoller Poller;
21 private static readonly object SendLock = new();
22
23
24 internal Transceiver(MqType owner, List<MqType> subscribeType, List<MqType> unSubscribleType, MethodManager funListener)
25 {
26 SubscribeTypes = subscribeType;
27 UnSubscribleTypes = unSubscribleType;
28 FunListeners = funListener;
29 Owner = owner.ToString();
30 ClientPub = new PublisherSocket(">tcp://127.0.0.1:61225");
31 ClientSub = new SubscriberSocket(">tcp://127.0.0.1:52216");
32 Poller = new NetMQPoller { ClientSub };
33 SubTopic();
34 ClientSub.ReceiveReady += ClientSub_ReceiveReady;
35 Poller.RunAsync();
36 }
37
38 private void ClientSub_ReceiveReady(object sender, NetMQSocketEventArgs e)
39 {
40 try
41 {
42 List<string> frames = new();
43 if (!e.Socket.TryReceiveMultipartStrings(TimeSpan.FromSeconds(3), ref frames) || frames == null)
44 {
45 Log.Error($"NetMQ接收异常！frames {frames}", LoggerNames.MqStr);
46 return;
47 }
48 if (frames.Count == 2)
49 {
50 string topic = frames[0];
51 string msg = frames[1];
52 if (Enum.TryParse(topic, out MqType topicType))
53 {
54 if (TryDeserializeProxyMessage(msg, out var controlRequest) && !string.IsNullOrWhiteSpace(controlRequest.Method))
55 {
56 if (FunListeners.Methods.TryGetValue(controlRequest.Method, out var methods))
57 {
58 foreach (var methodInfo in methods.Select(m => m.Value))
59 {
60 try
61 {
62 var parameters = controlRequest.Parameters.Select((p, i) => SafeChangeType(p, methodInfo.Parameters[i].ParameterType)).ToArray();
63 methodInfo.MethodInfo?.Invoke(methodInfo.Target, parameters);
64 }
65 catch (Exception ex)
66 {
67 Log.Error($"Failed to convert parameter for method {controlRequest.Method}: {ex.Message}", LoggerNames.MqStr);
68 return;
69 }
70 }
71 }
72 else
73 {
74 throw new InvalidOperationException("找不到对应的函数");
75 }
76 }
77 else
78 {
79 throw new InvalidOperationException("无法转换格式");
80 }
81 }
82 else
83 {
84 Log.Error($"NetMQ收到不正常数据，请检测！MqType：{topic}", LoggerNames.MqStr);
85 }
86 }
87 else
88 {
89 Log.Error($"NetMQ收到不正常数据，请检测！frames 长度为{frames.Count}", LoggerNames.MqStr);
90 }
91 }
92 catch (Exception ex)
93 {
94 Log.Error($"NetMQ收到消息报错：{ex.ToString()}", LoggerNames.MqStr);
95 }
96 }
97
98 public object SafeChangeType(object value, Type targetType)
99 {
100 if (targetType.IsEnum && value is string strValue)
101 {
102 return Enum.Parse(targetType, strValue);
103 }
104 return Convert.ChangeType(value, targetType);
105 }
106
107 private bool TryDeserializeProxyMessage(string json, out ProxyMessage message)
108 {
109 message = null;
110 try
111 {
112 message = JsonConvert.DeserializeObject<ProxyMessage>(json);
113 return message != null;
114 }
115 catch
116 {
117 return false;
118 }
119 }
120
121 private void SubTopic()
122 {
123 if (SubscribeTypes?.Any() == true)
124 {
125 foreach (var item in SubscribeTypes)
126 {
127 ClientSub.Subscribe(item.ToString());
128 }
129 }
130 if (UnSubscribleTypes?.Any() == true)
131 {
132 foreach (var item in UnSubscribleTypes)
133 {
134 ClientSub.Unsubscribe(item.ToString());
135 }
136 }
137 }
138
139 internal void SendMessage(string msg)
140 {
141 try
142 {
143 lock (SendLock)
144 {
145 var success = ClientPub.SendMoreFrame(Owner).TrySendFrame(TimeSpan.FromSeconds(3), msg);
146 }
147 }
148 catch (Exception ex)
149 {
150 Log.Error($"发送_消息失败 {msg},：{ex}", LoggerNames.MqStr);
151 }
152 }
153
154 public void Dispose()
155 {
156 Poller.Stop();
157 ClientPub?.Dispose();
158 ClientSub?.Dispose();
159 Poller.Dispose();
160 }
161 }
162 }

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