Панюшкин Андрей Лаб. 2 Группа 6513

.gitignore

@@ -415,4 +415,4 @@ FodyWeavers.xsd
 *.msi
 *.msix
 *.msm
-*.msp
+*.msp

Api.Gateway/Api.Gateway.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Ocelot" Version="24.1.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\EmployeeApp\EmployeeApp.ServiceDefaults\EmployeeApp.ServiceDefaults.csproj" />
+  </ItemGroup>
+
+</Project>

Api.Gateway/Api.Gateway.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>https</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

Api.Gateway/LoadBalancers/QueryBasedLoadBalancer.cs

@@ -0,0 +1,35 @@
+using Ocelot.LoadBalancer.Interfaces;
+using Ocelot.Responses;
+using Ocelot.Values;
+
+namespace Api.Gateway.LoadBalancers;
+
+/// <summary>
+/// Балансировщик нагрузки на основе query-параметра id
+/// Определяет реплику по остатку от деления идентификатора на число реплик
+/// </summary>
+/// <param name="services">Делегат для получения списка доступных реплик</param>
+public class QueryBased(Func<Task<List<Service>>> services) : ILoadBalancer
+{
+    private readonly Func<Task<List<Service>>> _services = services;
+
+    public string Type => nameof(QueryBased);
+
+    public async Task<Response<ServiceHostAndPort>> LeaseAsync(HttpContext httpContext)
+    {
+        var availableServices = await _services.Invoke();
+        var replicaCount = availableServices.Count;
+
+        var replicaIndex = 0;
+
+        if (httpContext.Request.Query.TryGetValue("id", out var rawId)
+            && int.TryParse(rawId, out var employeeId))
+        {
+            replicaIndex = Math.Abs(employeeId) % replicaCount;
+        }
+
+        return new OkResponse<ServiceHostAndPort>(availableServices[replicaIndex].HostAndPort);
+    }
+
+    public void Release(ServiceHostAndPort hostAndPort) { }
+}

Api.Gateway/Program.cs

@@ -0,0 +1,30 @@
+using Api.Gateway.LoadBalancers;
+using Ocelot.DependencyInjection;
+using Ocelot.Middleware;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.AddServiceDefaults();
+builder.Services.AddServiceDiscovery();
+builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);
+builder.Services.AddOcelot()
+    .AddCustomLoadBalancer<QueryBased>((_, _, discoveryProvider) => new(discoveryProvider.GetAsync));
+
+var clientOrigin = builder.Configuration["ClientOrigin"]
+    ?? throw new InvalidOperationException("ClientOrigin is not configured");
+
+builder.Services.AddCors(options => options.AddDefaultPolicy(policy =>
+{
+    policy.WithOrigins(clientOrigin);
+    policy.WithMethods("GET");
+    policy.AllowAnyHeader();
+}));
+
+var app = builder.Build();
+
+app.UseCors();
+app.MapDefaultEndpoints();
+
+await app.UseOcelot();
+
+app.Run();

Api.Gateway/Properties/launchSettings.json

@@ -0,0 +1,38 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:11915",
+      "sslPort": 44365
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5162",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7027;http://localhost:5162",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

Api.Gateway/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

Api.Gateway/appsettings.json

@@ -0,0 +1,10 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "ClientOrigin": "https://localhost:7282"
+}

Api.Gateway/ocelot.json

@@ -0,0 +1,20 @@
+{
+  "Routes": [
+    {
+      "DownstreamPathTemplate": "/api/employees",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        { "Host": "localhost", "Port": 5100 },
+        { "Host": "localhost", "Port": 5101 },
+        { "Host": "localhost", "Port": 5102 },
+        { "Host": "localhost", "Port": 5103 },
+        { "Host": "localhost", "Port": 5104 }
+      ],
+      "UpstreamPathTemplate": "/employees",
+      "UpstreamHttpMethod": [ "Get" ],
+      "LoadBalancerOptions": {
+        "Type": "QueryBased"
+      }
+    }
+  ]
+}

Client.Wasm/Client.Wasm.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>https</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

Client.Wasm/Components/StudentCard.razor

@@ -4,10 +4,10 @@
     </CardHeader>
     <CardBody>
         <UnorderedList Unstyled>
-            <UnorderedListItem>Номер <Strong>№X "Название лабораторной"</Strong></UnorderedListItem>
-            <UnorderedListItem>Вариант <Strong>№Х "Название варианта"</Strong></UnorderedListItem>
-            <UnorderedListItem>Выполнена <Strong>Фамилией Именем 65ХХ</Strong> </UnorderedListItem>
-            <UnorderedListItem><Link To="https://puginarug.com/">Ссылка на форк</Link></UnorderedListItem>
+            <UnorderedListItem>Номер <Strong>№2 "Балансировка нагрузки"</Strong></UnorderedListItem>
+            <UnorderedListItem>Вариант <Strong>№49 "Сотрудник компании"</Strong></UnorderedListItem>
+            <UnorderedListItem>Выполнена <Strong>Панюшкиным Андрем 6513</Strong></UnorderedListItem>
+            <UnorderedListItem><Link To="https://github.com/Santas7/cloud-development/tree/main">Ссылка на форк</Link></UnorderedListItem>
         </UnorderedList>
     </CardBody>
 </Card>

Client.Wasm/Properties/launchSettings.json

@@ -12,7 +12,7 @@
     "http": {
       "commandName": "Project",
       "dotnetRunMessages": true,
-      "launchBrowser": true,
+      "launchBrowser": false,
       "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
       "applicationUrl": "http://localhost:5127",
       "environmentVariables": {
@@ -22,7 +22,7 @@
     "https": {
       "commandName": "Project",
       "dotnetRunMessages": true,
-      "launchBrowser": true,
+      "launchBrowser": false,
       "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
       "applicationUrl": "https://localhost:7282;http://localhost:5127",
       "environmentVariables": {
@@ -31,7 +31,7 @@
     },
     "IIS Express": {
       "commandName": "IISExpress",
-      "launchBrowser": true,
+      "launchBrowser": false,
       "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"

Client.Wasm/wwwroot/appsettings.json

@@ -6,5 +6,5 @@
     }
   },
   "AllowedHosts": "*",
-  "BaseAddress": ""
+  "BaseAddress": "https://localhost:7027/employees"
 }