Console example of OpenTelemetry tracing (#944)

* Added DI container initialization

* Added httpclient service creation

* Improved minimal example of OpenTelemetry console

* Update Program.cs

* Removed TargetFramework from .csproj

examples/openTelemetryConsole/Program.cs

@@ -0,0 +1,36 @@
+using k8s;
+using OpenTelemetry;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+
+var serviceName = "MyCompany.MyProduct.MyService";
+var serviceVersion = "1.0.0";
+
+// Create the OpenTelemetry TraceProvide with HttpClient instrumentation enabled
+// NOTE: for this example telemetry will be exported to console
+using var tracerProvider = Sdk.CreateTracerProviderBuilder()
+    .AddSource(serviceName)
+    .SetResourceBuilder(ResourceBuilder.CreateDefault().AddService(serviceName: serviceName, serviceVersion: serviceVersion))
+    .AddHttpClientInstrumentation()
+    .AddConsoleExporter()
+    .Build();
+
+// Load kubernetes configuration
+var config = KubernetesClientConfiguration.BuildDefaultConfig();
+
+// Create an istance of Kubernetes client
+IKubernetes client = new Kubernetes(config);
+
+// Read the list of pods contained in default namespace
+var list = client.CoreV1.ListNamespacedPod("default");
+
+// Print the name of pods 
+foreach (var item in list.Items)
+{
+    Console.WriteLine(item.Metadata.Name);
+}
+// Or empty if there are no pods
+if (list.Items.Count == 0)
+{
+    Console.WriteLine("Empty!");
+}

examples/openTelemetryConsole/openTelemetryConsole.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="OpenTelemetry" Version="1.3.0" />
+        <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.3.0" />
+        <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.0.0-rc9.4" />
+    </ItemGroup>
+    
+</Project>

kubernetes-client.sln

@@ -63,7 +63,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "restart", "examples\restart
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "KubernetesClient.Kubectl", "src\KubernetesClient.Kubectl\KubernetesClient.Kubectl.csproj", "{21201F30-5463-4FC6-93C3-FBF157F0D46C}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Kubectl.Tests", "tests\Kubectl.Tests\Kubectl.Tests.csproj", "{9128F6DC-6B7A-417F-937A-90461D6989A8}"
+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}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -411,6 +413,18 @@ Global
 		{9128F6DC-6B7A-417F-937A-90461D6989A8}.Release|x64.Build.0 = Release|Any CPU
 		{9128F6DC-6B7A-417F-937A-90461D6989A8}.Release|x86.ActiveCfg = Release|Any CPU
 		{9128F6DC-6B7A-417F-937A-90461D6989A8}.Release|x86.Build.0 = Release|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|x64.Build.0 = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Debug|x86.Build.0 = Debug|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8E266190-AE6E-44A8-948D-BD974AA82428}.Release|x64.ActiveCfg = Release|Any CPU
+		{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
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -444,6 +458,7 @@ Global
 		{973CCB4A-F344-4C4F-81A5-0F40F7F43C07} = {B70AFB57-57C9-46DC-84BE-11B7DDD34B40}
 		{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}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {049A763A-C891-4E8D-80CF-89DD3E22ADC7}

src/KubernetesClient/KubernetesClientConfiguration.ConfigFile.cs

@@ -1,12 +1,12 @@
-using System.Diagnostics;
-using System.IO;
-using System.Runtime.InteropServices;
-using System.Security.Cryptography.X509Certificates;
-using System.Threading.Tasks;
 using k8s.Authentication;
 using k8s.Exceptions;
 using k8s.KubeConfigModels;
+using System.Diagnostics;
+using System.IO;
 using System.Net;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography.X509Certificates;
+using System.Threading.Tasks;
 
 namespace k8s
 {