├── .editorconfig ├── .gitattributes ├── .github └── workflows │ ├── dotnetcore.yml │ ├── integration.yml │ └── nuget_push.yml ├── .gitignore ├── Configmap.Extensions.Test ├── ConfigmapExtensionTest.cs ├── IntegrationTests.cs ├── Kubernetes.Configuration.Extensions.Test.csproj └── SecretExtensionTest.cs ├── Kubernetes.Config ├── Configmap │ ├── ConfigmapConfigurationExtensions.cs │ ├── ConfigmapConfigurationProvider.cs │ └── ConfigmapConfigurationSource.cs ├── Kubernetes.Configuration.Extensions.csproj └── Secret │ ├── SecretConfigurationExtensions.cs │ ├── SecretConfigurationProvider.cs │ └── SecretConfigurationSource.cs ├── Kubernetes.Configuration.Extensions.TestApplication └── Kubernetes.Configuration.Extensions.TestApplication.csproj ├── KubernetesConfig.sln ├── LICENSE └── README.md /.editorconfig: -------------------------------------------------------------------------------- 1 | # Rules in this file were initially inferred by Visual Studio IntelliCode from the C:\git\Kubernetes.Config codebase based on best match to current usage at 2018-10-05 2 | # You can modify the rules from these initially generated values to suit your own policies 3 | # You can learn more about editorconfig here: https://docs.microsoft.com/en-us/visualstudio/ide/editorconfig-code-style-settings-reference 4 | [*.cs] 5 | 6 | #Core editorconfig formatting - indentation 7 | 8 | #use soft tabs (spaces) for indentation 9 | indent_style = space 10 | 11 | #Formatting - new line options 12 | 13 | #place catch statements on a new line 14 | csharp_new_line_before_catch = true 15 | #require braces to be on a new line for control_blocks, types, lambdas, and methods (also known as "Allman" style) 16 | csharp_new_line_before_open_brace = control_blocks, types, lambdas, methods 17 | 18 | #Formatting - organize using options 19 | 20 | #sort System.* using directives alphabetically, and place them before other usings 21 | dotnet_sort_system_directives_first = true 22 | 23 | #Formatting - spacing options 24 | 25 | #require a space before the colon for bases or interfaces in a type declaration 26 | csharp_space_after_colon_in_inheritance_clause = true 27 | #require a space after a keyword in a control flow statement such as a for loop 28 | csharp_space_after_keywords_in_control_flow_statements = true 29 | #require a space before the colon for bases or interfaces in a type declaration 30 | csharp_space_before_colon_in_inheritance_clause = true 31 | #remove space within empty argument list parentheses 32 | csharp_space_between_method_call_empty_parameter_list_parentheses = false 33 | #remove space between method call name and opening parenthesis 34 | csharp_space_between_method_call_name_and_opening_parenthesis = false 35 | #do not place space characters after the opening parenthesis and before the closing parenthesis of a method call 36 | csharp_space_between_method_call_parameter_list_parentheses = false 37 | #remove space within empty parameter list parentheses for a method declaration 38 | csharp_space_between_method_declaration_empty_parameter_list_parentheses = false 39 | #place a space character after the opening parenthesis and before the closing parenthesis of a method declaration parameter list. 40 | csharp_space_between_method_declaration_parameter_list_parentheses = false 41 | 42 | #Formatting - wrapping options 43 | 44 | #leave code block on single line 45 | csharp_preserve_single_line_blocks = true 46 | #leave statements and member declarations on the same line 47 | csharp_preserve_single_line_statements = true 48 | 49 | #Style - expression bodied member options 50 | 51 | #prefer block bodies for methods 52 | csharp_style_expression_bodied_methods = false 53 | 54 | #Style - expression level options 55 | 56 | #prefer the language keyword for member access expressions, instead of the type name, for types that have a keyword to represent them 57 | dotnet_style_predefined_type_for_member_access = true:suggestion 58 | 59 | #Style - implicit and explicit types 60 | 61 | #prefer var is used to declare variables with built-in system types such as int 62 | csharp_style_var_for_built_in_types = true:suggestion 63 | #prefer var when the type is already mentioned on the right-hand side of a declaration expression 64 | csharp_style_var_when_type_is_apparent = true:suggestion 65 | 66 | #Style - language keyword and framework type options 67 | 68 | #prefer the language keyword for local variables, method parameters, and class members, instead of the type name, for types that have a keyword to represent them 69 | dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion 70 | 71 | #Style - qualification options 72 | 73 | #prefer fields not to be prefaced with this. or Me. in Visual Basic 74 | dotnet_style_qualification_for_field = false:suggestion 75 | #prefer methods not to be prefaced with this. or Me. in Visual Basic 76 | dotnet_style_qualification_for_method = false:suggestion 77 | #prefer properties not to be prefaced with this. or Me. in Visual Basic 78 | dotnet_style_qualification_for_property = false:suggestion 79 | -------------------------------------------------------------------------------- /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). Diff markers may cause the following 21 | # file extensions to fail to load in VS. An alternative would be to treat 22 | # these files as binary and thus will always conflict and require user 23 | # intervention with every merge. To do so, just uncomment the entries below 24 | ############################################################################### 25 | #*.sln merge=binary 26 | #*.csproj merge=binary 27 | #*.vbproj merge=binary 28 | #*.vcxproj merge=binary 29 | #*.vcproj merge=binary 30 | #*.dbproj merge=binary 31 | #*.fsproj merge=binary 32 | #*.lsproj merge=binary 33 | #*.wixproj merge=binary 34 | #*.modelproj merge=binary 35 | #*.sqlproj merge=binary 36 | #*.wwaproj merge=binary 37 | 38 | ############################################################################### 39 | # behavior for image files 40 | # 41 | # image files are treated as binary by default. 42 | ############################################################################### 43 | #*.jpg binary 44 | #*.png binary 45 | #*.gif binary 46 | 47 | ############################################################################### 48 | # diff behavior for common document formats 49 | # 50 | # Convert binary document formats to text before diffing them. This feature 51 | # is only available from the command line. Turn it on by uncommenting the 52 | # entries below. 53 | ############################################################################### 54 | #*.doc diff=astextplain 55 | #*.DOC diff=astextplain 56 | #*.docx diff=astextplain 57 | #*.DOCX diff=astextplain 58 | #*.dot diff=astextplain 59 | #*.DOT diff=astextplain 60 | #*.pdf diff=astextplain 61 | #*.PDF diff=astextplain 62 | #*.rtf diff=astextplain 63 | #*.RTF diff=astextplain 64 | -------------------------------------------------------------------------------- /.github/workflows/dotnetcore.yml: -------------------------------------------------------------------------------- 1 | name: .NET Core 2 | 3 | on: [push] 4 | 5 | jobs: 6 | build: 7 | 8 | runs-on: ubuntu-latest 9 | 10 | steps: 11 | - uses: actions/checkout@v1 12 | - name: Setup .NET Core 13 | uses: actions/setup-dotnet@v1 14 | with: 15 | dotnet-version: '3.1.x' 16 | - name: Build with dotnet 17 | run: dotnet build --configuration Release 18 | - name: Test with dotnet 19 | run: dotnet test --filter Type!=IntegrationTest 20 | -------------------------------------------------------------------------------- /.github/workflows/integration.yml: -------------------------------------------------------------------------------- 1 | name: CI 2 | 3 | on: [push] 4 | 5 | jobs: 6 | build: 7 | 8 | runs-on: ubuntu-latest 9 | 10 | steps: 11 | - uses: actions/checkout@v1 12 | - name: KinD (Kubernetes in Docker) Action 13 | uses: engineerd/setup-kind@v0.5.0 14 | - name: Install configmap and secret 15 | run: | 16 | kubectl create configmap test-config --from-literal=Test__Config=testvalue 17 | kubectl create secret generic test-secret --from-literal=Test__Secret=testsecretvalue 18 | kubectl label configmap test-config app=testapp 19 | kubectl label secret test-secret app=testapp 20 | - name: Run integrationtest 21 | run: dotnet test --filter Type=IntegrationTest -------------------------------------------------------------------------------- /.github/workflows/nuget_push.yml: -------------------------------------------------------------------------------- 1 | name: Publish to Nuget 2 | on: 3 | push: 4 | branches: 5 | - master 6 | jobs: 7 | build: 8 | runs-on: ubuntu-latest 9 | steps: 10 | # Checkout 11 | - uses: actions/checkout@v2 12 | - uses: actions/setup-dotnet@v1 13 | with: 14 | dotnet-version: '3.1.x' 15 | - name: Build 16 | run: dotnet build --configuration Release 17 | - name: Push 18 | run: dotnet nuget push --skip-duplicate **/*.nupkg 19 | --api-key ${{ secrets.NUGET_API_KEY }} 20 | --source https://api.nuget.org/v3/index.json 21 | --no-symbols true 22 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | 4 | # User-specific files 5 | *.suo 6 | *.user 7 | *.userosscache 8 | *.sln.docstates 9 | 10 | # User-specific files (MonoDevelop/Xamarin Studio) 11 | *.userprefs 12 | 13 | # Build results 14 | [Dd]ebug/ 15 | [Dd]ebugPublic/ 16 | [Rr]elease/ 17 | [Rr]eleases/ 18 | x64/ 19 | x86/ 20 | bld/ 21 | [Bb]in/ 22 | [Oo]bj/ 23 | [Ll]og/ 24 | 25 | # Visual Studio 2015 cache/options directory 26 | .vs/ 27 | # Uncomment if you have tasks that create the project's static files in wwwroot 28 | #wwwroot/ 29 | 30 | # MSTest test Results 31 | [Tt]est[Rr]esult*/ 32 | [Bb]uild[Ll]og.* 33 | 34 | # NUNIT 35 | *.VisualState.xml 36 | TestResult.xml 37 | 38 | # Build Results of an ATL Project 39 | [Dd]ebugPS/ 40 | [Rr]eleasePS/ 41 | dlldata.c 42 | 43 | # DNX 44 | project.lock.json 45 | project.fragment.lock.json 46 | artifacts/ 47 | 48 | *_i.c 49 | *_p.c 50 | *_i.h 51 | *.ilk 52 | *.meta 53 | *.obj 54 | *.pch 55 | *.pdb 56 | *.pgc 57 | *.pgd 58 | *.rsp 59 | *.sbr 60 | *.tlb 61 | *.tli 62 | *.tlh 63 | *.tmp 64 | *.tmp_proj 65 | *.log 66 | *.vspscc 67 | *.vssscc 68 | .builds 69 | *.pidb 70 | *.svclog 71 | *.scc 72 | 73 | # Chutzpah Test files 74 | _Chutzpah* 75 | 76 | # Visual C++ cache files 77 | ipch/ 78 | *.aps 79 | *.ncb 80 | *.opendb 81 | *.opensdf 82 | *.sdf 83 | *.cachefile 84 | *.VC.db 85 | *.VC.VC.opendb 86 | 87 | # Visual Studio profiler 88 | *.psess 89 | *.vsp 90 | *.vspx 91 | *.sap 92 | 93 | # TFS 2012 Local Workspace 94 | $tf/ 95 | 96 | # Guidance Automation Toolkit 97 | *.gpState 98 | 99 | # ReSharper is a .NET coding add-in 100 | _ReSharper*/ 101 | *.[Rr]e[Ss]harper 102 | *.DotSettings.user 103 | 104 | # JustCode is a .NET coding add-in 105 | .JustCode 106 | 107 | # TeamCity is a build add-in 108 | _TeamCity* 109 | 110 | # DotCover is a Code Coverage Tool 111 | *.dotCover 112 | 113 | # NCrunch 114 | _NCrunch_* 115 | .*crunch*.local.xml 116 | nCrunchTemp_* 117 | 118 | # MightyMoose 119 | *.mm.* 120 | AutoTest.Net/ 121 | 122 | # Web workbench (sass) 123 | .sass-cache/ 124 | 125 | # Installshield output folder 126 | [Ee]xpress/ 127 | 128 | # DocProject is a documentation generator add-in 129 | DocProject/buildhelp/ 130 | DocProject/Help/*.HxT 131 | DocProject/Help/*.HxC 132 | DocProject/Help/*.hhc 133 | DocProject/Help/*.hhk 134 | DocProject/Help/*.hhp 135 | DocProject/Help/Html2 136 | DocProject/Help/html 137 | 138 | # Click-Once directory 139 | publish/ 140 | 141 | # Publish Web Output 142 | *.[Pp]ublish.xml 143 | *.azurePubxml 144 | # TODO: Comment the next line if you want to checkin your web deploy settings 145 | # but database connection strings (with potential passwords) will be unencrypted 146 | #*.pubxml 147 | *.publishproj 148 | 149 | # Microsoft Azure Web App publish settings. Comment the next line if you want to 150 | # checkin your Azure Web App publish settings, but sensitive information contained 151 | # in these scripts will be unencrypted 152 | PublishScripts/ 153 | 154 | # NuGet Packages 155 | *.nupkg 156 | # The packages folder can be ignored because of Package Restore 157 | **/packages/* 158 | # except build/, which is used as an MSBuild target. 159 | !**/packages/build/ 160 | # Uncomment if necessary however generally it will be regenerated when needed 161 | #!**/packages/repositories.config 162 | # NuGet v3's project.json files produces more ignoreable files 163 | *.nuget.props 164 | *.nuget.targets 165 | 166 | # Microsoft Azure Build Output 167 | csx/ 168 | *.build.csdef 169 | 170 | # Microsoft Azure Emulator 171 | ecf/ 172 | rcf/ 173 | 174 | # Windows Store app package directories and files 175 | AppPackages/ 176 | BundleArtifacts/ 177 | Package.StoreAssociation.xml 178 | _pkginfo.txt 179 | 180 | # Visual Studio cache files 181 | # files ending in .cache can be ignored 182 | *.[Cc]ache 183 | # but keep track of directories ending in .cache 184 | !*.[Cc]ache/ 185 | 186 | # Others 187 | ClientBin/ 188 | ~$* 189 | *~ 190 | *.dbmdl 191 | *.dbproj.schemaview 192 | *.jfm 193 | *.pfx 194 | *.publishsettings 195 | node_modules/ 196 | orleans.codegen.cs 197 | 198 | # Since there are multiple workflows, uncomment next line to ignore bower_components 199 | # (https://github.com/github/gitignore/pull/1529#issuecomment-104372622) 200 | #bower_components/ 201 | 202 | # RIA/Silverlight projects 203 | Generated_Code/ 204 | 205 | # Backup & report files from converting an old project file 206 | # to a newer Visual Studio version. Backup files are not needed, 207 | # because we have git ;-) 208 | _UpgradeReport_Files/ 209 | Backup*/ 210 | UpgradeLog*.XML 211 | UpgradeLog*.htm 212 | 213 | # SQL Server files 214 | *.mdf 215 | *.ldf 216 | 217 | # Business Intelligence projects 218 | *.rdl.data 219 | *.bim.layout 220 | *.bim_*.settings 221 | 222 | # Microsoft Fakes 223 | FakesAssemblies/ 224 | 225 | # GhostDoc plugin setting file 226 | *.GhostDoc.xml 227 | 228 | # Node.js Tools for Visual Studio 229 | .ntvs_analysis.dat 230 | 231 | # Visual Studio 6 build log 232 | *.plg 233 | 234 | # Visual Studio 6 workspace options file 235 | *.opt 236 | 237 | # Visual Studio LightSwitch build output 238 | **/*.HTMLClient/GeneratedArtifacts 239 | **/*.DesktopClient/GeneratedArtifacts 240 | **/*.DesktopClient/ModelManifest.xml 241 | **/*.Server/GeneratedArtifacts 242 | **/*.Server/ModelManifest.xml 243 | _Pvt_Extensions 244 | 245 | # Paket dependency manager 246 | .paket/paket.exe 247 | paket-files/ 248 | 249 | # FAKE - F# Make 250 | .fake/ 251 | 252 | # JetBrains Rider 253 | .idea/ 254 | *.sln.iml 255 | 256 | # CodeRush 257 | .cr/ 258 | 259 | # Python Tools for Visual Studio (PTVS) 260 | __pycache__/ 261 | *.pyc 262 | /.vscode/ 263 | -------------------------------------------------------------------------------- /Configmap.Extensions.Test/ConfigmapExtensionTest.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using Kubernetes.Configuration.Extensions.Configmap; 3 | using Microsoft.Extensions.Configuration; 4 | using Xunit; 5 | 6 | namespace Kubernetes.Configuration.Extensions.Test 7 | { 8 | public class ConfigmapExtensionTest 9 | { 10 | [Theory] 11 | [InlineData(null)] 12 | [InlineData("")] 13 | public void AddConfigmap_ThrowsIfLabelIsNullOrEmpty(string label) 14 | { 15 | var configurationBuilder = new ConfigurationBuilder(); 16 | var ex = Assert.Throws(() => configurationBuilder.AddKubernetesConfigmap(label)); 17 | Assert.Equal("labelSelector", ex.ParamName); 18 | Assert.StartsWith("Invalid label selector", ex.Message); 19 | } 20 | [Fact] 21 | public void AddConfigmap_HasDefaultNamespace() 22 | { 23 | var configurationBuilder = new ConfigurationBuilder(); 24 | var source = configurationBuilder.AddKubernetesConfigmap("label").Sources[0] as ConfigmapConfigurationSource; 25 | Assert.Equal("default", source?.Namespace); 26 | } 27 | } 28 | } -------------------------------------------------------------------------------- /Configmap.Extensions.Test/IntegrationTests.cs: -------------------------------------------------------------------------------- 1 | using System.Linq; 2 | using Kubernetes.Configuration.Extensions.Configmap; 3 | using Kubernetes.Configuration.Extensions.Secret; 4 | using Microsoft.Extensions.Configuration; 5 | using Xunit; 6 | 7 | namespace Kubernetes.Configuration.Extensions.Test 8 | { 9 | public class IntegrationTests 10 | { 11 | [Trait("Type", "IntegrationTest")] 12 | [Fact] 13 | public void Test_Add_ConfigMap_And_Secret_From_Kubernetes() 14 | { 15 | var builder = new ConfigurationBuilder(); 16 | builder.AddKubernetesConfigmap("app=testapp"); 17 | builder.AddKubernetesSecret("app=testapp"); 18 | 19 | var config = builder.Build(); 20 | Assert.NotEmpty(config.Providers); 21 | Assert.Equal("testvalue", config.AsEnumerable().Single(x => x.Key == "Test:Config").Value); 22 | Assert.Equal("testsecretvalue", config.AsEnumerable().Single(x => x.Key == "Test:Secret").Value); 23 | } 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /Configmap.Extensions.Test/Kubernetes.Configuration.Extensions.Test.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | netcoreapp3.0 5 | 6 | false 7 | 8 | 9 | 10 | 11 | 12 | 13 | all 14 | runtime; build; native; contentfiles; analyzers 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | ..\..\..\Program Files\dotnet\sdk\NuGetFallbackFolder\microsoft.extensions.configuration\2.1.1\lib\netstandard2.0\Microsoft.Extensions.Configuration.dll 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /Configmap.Extensions.Test/SecretExtensionTest.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Text; 4 | using Kubernetes.Configuration.Extensions.Secret; 5 | using Microsoft.Extensions.Configuration; 6 | using Xunit; 7 | 8 | namespace Kubernetes.Configuration.Extensions.Test 9 | { 10 | public class SecretExtensionTest 11 | { 12 | [Theory] 13 | [InlineData(null)] 14 | [InlineData("")] 15 | public void AddSecret_ThrowsIfLabelIsNullOrEmpty(string label) 16 | { 17 | var configurationBuilder = new ConfigurationBuilder(); 18 | var ex = Assert.Throws(() => configurationBuilder.AddKubernetesSecret(label)); 19 | Assert.Equal("labelSelector", ex.ParamName); 20 | Assert.StartsWith("Invalid label selector", ex.Message); 21 | } 22 | [Fact] 23 | public void AddSecret_HasDefaultNamespace() 24 | { 25 | var configurationBuilder = new ConfigurationBuilder(); 26 | var source = configurationBuilder.AddKubernetesSecret("label").Sources[0] as SecretConfigurationSource; 27 | Assert.Equal("default", source?.Namespace); 28 | } 29 | 30 | [Theory] 31 | [MemberData(nameof(GetData))] 32 | public void DecodeSecret_HandlesNormalCases(byte[] value) 33 | { 34 | var result = SecretConfigurationProvider.DecodeSecret(value); 35 | Assert.Equal(Encoding.UTF8.GetBytes("testdata"), Encoding.UTF8.GetBytes(result)); 36 | } 37 | 38 | public static IEnumerable GetData() 39 | { 40 | yield return new object[] { Encoding.UTF8.GetBytes("dGVzdGRhdGE=")}; 41 | } 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /Kubernetes.Config/Configmap/ConfigmapConfigurationExtensions.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using Microsoft.Extensions.Configuration; 3 | 4 | namespace Kubernetes.Configuration.Extensions.Configmap 5 | { 6 | public static class ConfigmapConfigurationExtensions 7 | { 8 | public static IConfigurationBuilder AddKubernetesConfigmap(this IConfigurationBuilder builder, string labelSelector, string namespaceSelector = "default", bool reloadOnChange = false, string separator = "__") 9 | { 10 | if (builder == null) 11 | { 12 | throw new ArgumentNullException(nameof(builder)); 13 | } 14 | if (string.IsNullOrEmpty(labelSelector)) 15 | { 16 | throw new ArgumentException("Invalid label selector", nameof(labelSelector)); 17 | } 18 | builder.Add(new ConfigmapConfigurationSource { Namespace = namespaceSelector, LabelSelector = labelSelector, ReloadOnChange = reloadOnChange}); 19 | return builder; 20 | } 21 | 22 | /// 23 | /// Adds a JSON configuration source to . 24 | /// 25 | /// The to add to. 26 | /// Configures the source. 27 | /// The . 28 | public static IConfigurationBuilder AddKubernetesConfigmap(this IConfigurationBuilder builder, Action configureSource) 29 | => builder.Add(configureSource); 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /Kubernetes.Config/Configmap/ConfigmapConfigurationProvider.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Linq; 4 | using k8s; 5 | using k8s.Models; 6 | using Microsoft.Extensions.Configuration; 7 | 8 | namespace Kubernetes.Configuration.Extensions.Configmap 9 | { 10 | public class ConfigmapConfigurationProvider : ConfigurationProvider 11 | { 12 | private readonly string _namespaceSelector; 13 | private readonly string _labelSelector; 14 | private readonly string _separator; 15 | private readonly k8s.Kubernetes _client; 16 | public ConfigmapConfigurationProvider() : this(string.Empty, string.Empty, "__", false) 17 | { } 18 | public ConfigmapConfigurationProvider(string? namespaceSelector, string? labelSelector, string? separator, bool reloadOnChange) 19 | { 20 | _namespaceSelector = namespaceSelector ?? string.Empty; 21 | _labelSelector = labelSelector ?? string.Empty; 22 | _separator = separator ?? "__"; 23 | KubernetesClientConfiguration config; 24 | try 25 | { 26 | config = KubernetesClientConfiguration.InClusterConfig(); 27 | } 28 | catch 29 | { 30 | config = KubernetesClientConfiguration.BuildConfigFromConfigFile(); 31 | } 32 | _client = new k8s.Kubernetes(config); 33 | 34 | if (!reloadOnChange) return; 35 | var configMapsResponse = _client.ListNamespacedConfigMapWithHttpMessagesAsync(_namespaceSelector, labelSelector: _labelSelector, watch: true).Result; 36 | 37 | configMapsResponse.Watch((type, item) => 38 | { 39 | if(type.Equals(WatchEventType.Modified)) 40 | Load(true); 41 | }); 42 | } 43 | 44 | private void Load(bool reload) 45 | { 46 | if (reload) 47 | { 48 | Data = new Dictionary(StringComparer.OrdinalIgnoreCase); 49 | } 50 | try 51 | { 52 | var configMaps = _client.ListNamespacedConfigMap(_namespaceSelector, labelSelector: _labelSelector); 53 | var dataList = configMaps.Items.Where(w => w.Data != null).Select(s => s.Data); 54 | foreach (var dataItem in dataList) 55 | { 56 | foreach (var (key, value) in dataItem) 57 | Data[key.Replace(_separator, ":")] = value; 58 | } 59 | } 60 | catch 61 | { 62 | // ignored 63 | } 64 | } 65 | public override void Load() 66 | { 67 | Load(false); 68 | } 69 | } 70 | } 71 | -------------------------------------------------------------------------------- /Kubernetes.Config/Configmap/ConfigmapConfigurationSource.cs: -------------------------------------------------------------------------------- 1 | using Microsoft.Extensions.Configuration; 2 | 3 | namespace Kubernetes.Configuration.Extensions.Configmap 4 | { 5 | public class ConfigmapConfigurationSource : IConfigurationSource 6 | { 7 | public string? Namespace { get; set; } 8 | public string? LabelSelector { get; set; } 9 | public string? Separator { get; set; } 10 | public bool ReloadOnChange { get; set; } 11 | public IConfigurationProvider Build(IConfigurationBuilder builder) 12 | { 13 | return new ConfigmapConfigurationProvider(Namespace, LabelSelector, Separator, ReloadOnChange); 14 | } 15 | } 16 | } -------------------------------------------------------------------------------- /Kubernetes.Config/Kubernetes.Configuration.Extensions.csproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | netstandard2.1 5 | true 6 | enable 7 | 1.2.0 8 | 1.2.0.0 9 | 1.2.0.0 10 | Adds extension methods for reading Kubernetes Configmaps and Secrets 11 | Tommy Kindmark 12 | Kubernetes 13 | https://github.com/Towmeykaw/Kubernetes.Configuration.Extensions 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /Kubernetes.Config/Secret/SecretConfigurationExtensions.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using Microsoft.Extensions.Configuration; 3 | 4 | namespace Kubernetes.Configuration.Extensions.Secret 5 | { 6 | public static class SecretConfigurationExtensions 7 | { 8 | public static IConfigurationBuilder AddKubernetesSecret(this IConfigurationBuilder builder, string labelSelector, string namespaceSelector = "default", string separator = "__", bool reloadOnChange = false, bool decodeData = true) 9 | { 10 | if (builder == null) 11 | { 12 | throw new ArgumentNullException(nameof(builder)); 13 | } 14 | if (string.IsNullOrEmpty(labelSelector)) 15 | { 16 | throw new ArgumentException("Invalid label selector", nameof(labelSelector)); 17 | } 18 | builder.Add(new SecretConfigurationSource { Namespace = namespaceSelector, LabelSelector = labelSelector, Separator = separator, ReloadOnChange = reloadOnChange, DecodeData = decodeData}); 19 | return builder; 20 | } 21 | 22 | /// 23 | /// Adds a JSON configuration source to . 24 | /// 25 | /// The to add to. 26 | /// Configures the source. 27 | /// The . 28 | public static IConfigurationBuilder AddKubernetesSecret(this IConfigurationBuilder builder, Action configureSource) 29 | => builder.Add(configureSource); 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /Kubernetes.Config/Secret/SecretConfigurationProvider.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Linq; 4 | using System.Text; 5 | using k8s; 6 | using k8s.Models; 7 | using Microsoft.Extensions.Configuration; 8 | 9 | namespace Kubernetes.Configuration.Extensions.Secret 10 | { 11 | public class SecretConfigurationProvider : ConfigurationProvider 12 | { 13 | private readonly string _namespaceSelector; 14 | private readonly string _labelSelector; 15 | private readonly string _separator; 16 | private readonly k8s.Kubernetes _client; 17 | private readonly bool _decodeData; 18 | 19 | public SecretConfigurationProvider() : this(string.Empty, string.Empty, "__", false) 20 | { } 21 | public SecretConfigurationProvider(string? namespaceSelector, string? labelSelector, string? separator, bool reloadOnChange, bool decodeData = true) 22 | { 23 | _namespaceSelector = namespaceSelector ?? string.Empty; 24 | _labelSelector = labelSelector ?? string.Empty; 25 | _separator = separator ?? "__"; 26 | _decodeData = decodeData; 27 | KubernetesClientConfiguration config; 28 | try 29 | { 30 | config = KubernetesClientConfiguration.InClusterConfig(); 31 | } 32 | catch 33 | { 34 | config = KubernetesClientConfiguration.BuildConfigFromConfigFile(); 35 | } 36 | _client = new k8s.Kubernetes(config); 37 | 38 | if (!reloadOnChange) return; 39 | 40 | var secretResponse = _client.ListNamespacedSecretWithHttpMessagesAsync(_namespaceSelector, labelSelector: _labelSelector, watch: true).Result; 41 | secretResponse.Watch((type, item) => 42 | { 43 | if(type.Equals(WatchEventType.Modified)) 44 | Load(true); 45 | }); 46 | } 47 | 48 | private void Load(bool reload) 49 | { 50 | if (reload) 51 | { 52 | Data = new Dictionary(StringComparer.OrdinalIgnoreCase); 53 | } 54 | try 55 | { 56 | var secrets = _client.ListNamespacedSecret(_namespaceSelector, labelSelector: _labelSelector); 57 | var dataList = secrets.Items.Where(w => w.Data != null).Select(s => s.Data); 58 | foreach (var dataItem in dataList) 59 | { 60 | foreach (var (key, value) in dataItem) 61 | { 62 | Data[key.Replace(_separator, ":")] = _decodeData ? DecodeSecret(value) : Encoding.UTF8.GetString(value); 63 | } 64 | } 65 | } 66 | catch 67 | { 68 | // ignored 69 | } 70 | } 71 | public override void Load() 72 | { 73 | Load(false); 74 | } 75 | 76 | public static string DecodeSecret(byte[] value) 77 | { 78 | if (value == null) 79 | { 80 | throw new ArgumentException("Invalid secret value null", nameof(value)); 81 | } 82 | 83 | var base64String = Encoding.UTF8.GetString(value); 84 | try 85 | { 86 | var bytes = Convert.FromBase64String(base64String); 87 | return Encoding.UTF8.GetString(bytes); 88 | } 89 | catch 90 | { 91 | return base64String; 92 | } 93 | } 94 | } 95 | } 96 | -------------------------------------------------------------------------------- /Kubernetes.Config/Secret/SecretConfigurationSource.cs: -------------------------------------------------------------------------------- 1 | using Microsoft.Extensions.Configuration; 2 | 3 | namespace Kubernetes.Configuration.Extensions.Secret 4 | { 5 | public class SecretConfigurationSource : IConfigurationSource 6 | { 7 | public string? Namespace { get; set; } 8 | public string? LabelSelector { get; set; } 9 | public string? Separator { get; set; } 10 | public bool ReloadOnChange { get; set; } 11 | public bool DecodeData { get; set; } = true; 12 | public IConfigurationProvider Build(IConfigurationBuilder builder) 13 | { 14 | return new SecretConfigurationProvider(Namespace, LabelSelector, Separator, ReloadOnChange, DecodeData); 15 | } 16 | } 17 | } -------------------------------------------------------------------------------- /Kubernetes.Configuration.Extensions.TestApplication/Kubernetes.Configuration.Extensions.TestApplication.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Exe 5 | netcoreapp3.1 6 | enable 7 | 8 | 9 | -------------------------------------------------------------------------------- /KubernetesConfig.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 16 4 | VisualStudioVersion = 16.0.29519.161 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Kubernetes.Configuration.Extensions", "Kubernetes.Config\Kubernetes.Configuration.Extensions.csproj", "{7DDCC267-8E6B-462A-BA60-B117F58E521D}" 7 | EndProject 8 | Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Kubernetes.Configuration.Extensions.Test", "Configmap.Extensions.Test\Kubernetes.Configuration.Extensions.Test.csproj", "{616039AF-05A6-4A0B-8AF9-C91734597484}" 9 | EndProject 10 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{676DF6AF-E262-4EB4-B306-7F757B832D89}" 11 | ProjectSection(SolutionItems) = preProject 12 | .editorconfig = .editorconfig 13 | EndProjectSection 14 | EndProject 15 | Global 16 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 17 | Debug|Any CPU = Debug|Any CPU 18 | Release|Any CPU = Release|Any CPU 19 | EndGlobalSection 20 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 21 | {7DDCC267-8E6B-462A-BA60-B117F58E521D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 22 | {7DDCC267-8E6B-462A-BA60-B117F58E521D}.Debug|Any CPU.Build.0 = Debug|Any CPU 23 | {7DDCC267-8E6B-462A-BA60-B117F58E521D}.Release|Any CPU.ActiveCfg = Release|Any CPU 24 | {7DDCC267-8E6B-462A-BA60-B117F58E521D}.Release|Any CPU.Build.0 = Release|Any CPU 25 | {616039AF-05A6-4A0B-8AF9-C91734597484}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 26 | {616039AF-05A6-4A0B-8AF9-C91734597484}.Debug|Any CPU.Build.0 = Debug|Any CPU 27 | {616039AF-05A6-4A0B-8AF9-C91734597484}.Release|Any CPU.ActiveCfg = Release|Any CPU 28 | {616039AF-05A6-4A0B-8AF9-C91734597484}.Release|Any CPU.Build.0 = Release|Any CPU 29 | EndGlobalSection 30 | GlobalSection(SolutionProperties) = preSolution 31 | HideSolutionNode = FALSE 32 | EndGlobalSection 33 | GlobalSection(ExtensibilityGlobals) = postSolution 34 | SolutionGuid = {C54F3FE5-6F62-482B-974F-6D5AC436E5B0} 35 | EndGlobalSection 36 | EndGlobal 37 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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Run command 11 | ``` Install-Package Kubernetes.Configuration.Extensions ``` 12 | 13 | ### Usage 14 | To use with DI just add the following. 15 | ``` 16 | .ConfigureAppConfiguration((hostingContext, config) => 17 | { 18 | config.AddKubernetesConfigmap("app=testapp", reloadOnChange:true); 19 | config.AddKubernetesSecret("app=testapp", reloadOnChange:true); 20 | 21 | }) 22 | ``` 23 | A label is required on the configmap since otherwise every configmap on the system will be fetched. 24 | --------------------------------------------------------------------------------