ASP.NET core web api DI example (#950)

* Added example source code

* Removed unnecessary nuget package

examples/webApiDependencyInjection/Controllers/ExampleDependencyInjectionOnConstructorController.cs

@@ -0,0 +1,35 @@
+using k8s;
+using Microsoft.AspNetCore.Mvc;
+
+namespace webApiDependencyInjection.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class ExampleDependencyInjectionOnConstructorController : ControllerBase
+    {
+        private readonly IKubernetes kubernetesClient;
+
+        /// <summary>
+        /// Inject the kubernets class in the constructor.
+        /// </summary>
+        /// <param name="kubernetesClient"></param>
+        public ExampleDependencyInjectionOnConstructorController(IKubernetes kubernetesClient)
+        {
+            this.kubernetesClient = kubernetesClient;
+        }
+
+        /// <summary>
+        /// Example using the kubernetes client obtained from the constructor (this.kubernetesClient).
+        /// </summary>
+        /// <returns></returns>
+        [HttpGet()]
+        public IEnumerable<string> GetPods()
+        {
+            // Read the list of pods contained in default namespace
+            var podList = this.kubernetesClient.CoreV1.ListNamespacedPod("default");
+
+            // Return names of pods
+            return podList.Items.Select(pod => pod.Metadata.Name);
+        }
+    }
+}

examples/webApiDependencyInjection/Controllers/ExampleDependencyInjectionOnMethodController.cs

@@ -0,0 +1,25 @@
+using k8s;
+using Microsoft.AspNetCore.Mvc;
+
+namespace webApiDependencyInjection.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class ExampleDependencyInjectionOnMethodController : ControllerBase
+    {
+        /// <summary>
+        /// Example using the kubernetes client injected directly into the method ([FromServices] IKubernetes kubernetesClient).
+        /// </summary>
+        /// <param name="kubernetes"></param>
+        /// <returns></returns>
+        [HttpGet()]
+        public IEnumerable<string> GetPods([FromServices] IKubernetes kubernetesClient)
+        {
+            // Read the list of pods contained in default namespace
+            var podList = kubernetesClient.CoreV1.ListNamespacedPod("default");
+
+            // Return names of pods
+            return podList.Items.Select(pod => pod.Metadata.Name);
+        }
+    }
+}

examples/webApiDependencyInjection/Program.cs

@@ -0,0 +1,34 @@
+using k8s;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Load kubernetes configuration
+var kubernetesClientConfig = KubernetesClientConfiguration.BuildDefaultConfig();
+
+// Register Kubernetes client interface as sigleton
+builder.Services.AddSingleton<IKubernetes>(new Kubernetes(kubernetesClientConfig));
+
+// Add services to the container.
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+builder.Services.AddControllers();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+// Start the service
+app.Run();
+
+
+// Swagger ui can be accesse at: http://localhost:<yourBindingPort>/swagger

examples/webApiDependencyInjection/appsettings.Development.json

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

examples/webApiDependencyInjection/appsettings.json

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

examples/webApiDependencyInjection/webApiDependencyInjection.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Swashbuckle.AspNetCore" Version="6.3.1" />
+    </ItemGroup>
+
+</Project>

kubernetes-client.sln

@@ -65,7 +65,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "KubernetesClient.Kubectl",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Kubectl.Tests", "tests\Kubectl.Tests\Kubectl.Tests.csproj", "{9128F6DC-6B7A-417F-937A-90461D6989A8}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "openTelemetryConsole", "examples\openTelemetryConsole\openTelemetryConsole.csproj", "{8E266190-AE6E-44A8-948D-BD974AA82428}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "openTelemetryConsole", "examples\openTelemetryConsole\openTelemetryConsole.csproj", "{8E266190-AE6E-44A8-948D-BD974AA82428}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "webApiDependencyInjection", "examples\webApiDependencyInjection\webApiDependencyInjection.csproj", "{C0759F88-A010-4DEF-BD3B-E183D3328FFC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -425,6 +427,18 @@ Global
 		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|x64.Build.0 = Release|Any CPU
 		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|x86.ActiveCfg = Release|Any CPU
 		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|x86.Build.0 = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|x64.Build.0 = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Debug|x86.Build.0 = Debug|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|x64.ActiveCfg = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|x64.Build.0 = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|x86.ActiveCfg = Release|Any CPU
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -459,6 +473,7 @@ Global
 		{21201F30-5463-4FC6-93C3-FBF157F0D46C} = {3D1864AA-1FFC-4512-BB13-46055E410F73}
 		{9128F6DC-6B7A-417F-937A-90461D6989A8} = {8AF4A5C2-F0CE-47D5-A4C5-FE4AB83CA509}
 		{8E266190-AE6E-44A8-948D-BD974AA82428} = {B70AFB57-57C9-46DC-84BE-11B7DDD34B40}
+		{C0759F88-A010-4DEF-BD3B-E183D3328FFC} = {B70AFB57-57C9-46DC-84BE-11B7DDD34B40}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {049A763A-C891-4E8D-80CF-89DD3E22ADC7}