✨ Add API Gateway (Ocelot)

ApiGateway/ApiGateway.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Ocelot" Version="18.0.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
+  </ItemGroup>
+
+</Project>

ApiGateway/Program.cs

@@ -0,0 +1,32 @@
+using Ocelot.DependencyInjection;
+using Ocelot.Middleware;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);
+builder.Services.AddOcelot(builder.Configuration);
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+await app.UseOcelot();
+
+app.Run();

ApiGateway/Properties/launchSettings.json

@@ -0,0 +1,31 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:17820",
+      "sslPort": 44370
+    }
+  },
+  "profiles": {
+    "ApiGateway": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:5003;http://localhost:5197",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

ApiGateway/appsettings.Development.json

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

ApiGateway/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

ApiGateway/ocelot.json

@@ -0,0 +1,93 @@
+{
+  "GlobalConfiguration": {
+    "BaseUrl": "https://localhost:5003"
+  },
+  "Routes": [
+    {
+      "UpstreamPathTemplate": "/gateway/cats",
+      "UpstreamHttpMethod": [ "Get" ],
+      "DownstreamPathTemplate": "/api/cats",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+    {
+      "UpstreamPathTemplate": "/gateway/cats",
+      "UpstreamHttpMethod": [ "Post" ],
+      "DownstreamPathTemplate": "/api/cats",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+    {
+      "UpstreamPathTemplate": "/gateway/cats/{id}",
+      "UpstreamHttpMethod": [ "Get", "Put", "Delete" ],
+      "DownstreamPathTemplate": "/api/cats/{id}",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+
+    {
+      "UpstreamPathTemplate": "/gateway/bars",
+      "UpstreamHttpMethod": [ "Get", "Post" ],
+      "DownstreamPathTemplate": "/api/bars",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+    {
+      "UpstreamPathTemplate": "/gateway/bars/{id}",
+      "UpstreamHttpMethod": [ "Get", "Put", "Delete" ],
+      "DownstreamPathTemplate": "/api/bars/{id}",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+
+    {
+      "UpstreamPathTemplate": "/gateway/customers",
+      "UpstreamHttpMethod": [ "Get", "Post" ],
+      "DownstreamPathTemplate": "/api/customers",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    },
+    {
+      "UpstreamPathTemplate": "/gateway/customers/{id}",
+      "UpstreamHttpMethod": [ "Get", "Put", "Delete" ],
+      "DownstreamPathTemplate": "/api/customers/{id}",
+      "DownstreamScheme": "https",
+      "DownstreamHostAndPorts": [
+        {
+          "Host": "localhost",
+          "Port": 7229
+        }
+      ]
+    }
+  ]
+}

cat_cafe/cat_cafe.sln

@@ -5,7 +5,9 @@ VisualStudioVersion = 17.2.32616.157
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "cat_cafe", "cat_cafe.csproj", "{CC02D05A-3817-4D0A-8766-3FEE0C90941B}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "..\Tests\Tests.csproj", "{039A9A95-25ED-4632-9C4B-0AB4E5B5A7B4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "..\Tests\Tests.csproj", "{039A9A95-25ED-4632-9C4B-0AB4E5B5A7B4}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ApiGateway", "..\ApiGateway\ApiGateway.csproj", "{18B6DE0C-D6D7-452F-94A2-83DB98194D6F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -21,6 +23,10 @@ Global
 		{039A9A95-25ED-4632-9C4B-0AB4E5B5A7B4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{039A9A95-25ED-4632-9C4B-0AB4E5B5A7B4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{039A9A95-25ED-4632-9C4B-0AB4E5B5A7B4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{18B6DE0C-D6D7-452F-94A2-83DB98194D6F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{18B6DE0C-D6D7-452F-94A2-83DB98194D6F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{18B6DE0C-D6D7-452F-94A2-83DB98194D6F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{18B6DE0C-D6D7-452F-94A2-83DB98194D6F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE