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rynowakrynowak
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Add helm chart generation
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-3
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9 files changed

+218
-3
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‎.gitignore

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@@ -348,3 +348,5 @@ MigrationBackup/
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# Ionide (cross platform F# VS Code tools) working folder
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.ionide/
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.DS_Store

‎src/Opulence/HelmChartStep.cs

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namespace Opulence
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{
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public sealed class HelmChartStep : Step
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{
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public override string DisplayName => "Helm";
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}
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}

‎src/Opulence/StepCollection.cs

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@@ -4,7 +4,7 @@ namespace Opulence
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{
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public sealed class StepCollection : Collection<Step>
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{
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public T? GetT<T>() where T : Step
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public T? Get<T>() where T : Step
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{
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for (var i = 0; i < Count; i++)
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{

‎src/dotnet-opulence/DirectoryCopy.cs

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using System.IO;
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namespace Opulence
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{
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public static class DirectoryCopy
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{
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public static void Copy(string source, string destination)
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{
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CopyCore(new DirectoryInfo(source), new DirectoryInfo(destination));
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}
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private static void CopyCore(DirectoryInfo source, DirectoryInfo destination)
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{
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Directory.CreateDirectory(destination.FullName);
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foreach (var file in source.GetFiles())
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{
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file.CopyTo(Path.Combine(destination.FullName, file.Name), true);
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}
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foreach (var nextSource in source.GetDirectories())
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{
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var nextDestination = destination.CreateSubdirectory(nextSource.Name);
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CopyCore(nextSource, nextDestination);
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}
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}
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}
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}

‎src/dotnet-opulence/HelmChartGenerator.cs

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using System;
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using System.CommandLine;
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using System.CommandLine.Invocation;
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using System.IO;
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using System.Threading.Tasks;
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namespace Opulence
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{
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internal static class HelmChartGenerator
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{
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public static async Task GenerateAsync(IConsole console, Application application, ContainerStep container, HelmChartStep chart, string outputDirectoryPath)
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{
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var directoryPath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
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var chartDirectoryPath = Path.Combine(directoryPath, application.Name.ToLowerInvariant());
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try
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{
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Directory.CreateDirectory(directoryPath);
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Directory.CreateDirectory(chartDirectoryPath);
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var templateDirectoryPath = Path.Combine(
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Path.GetDirectoryName(typeof(HelmChartGenerator).Assembly.Location)!,
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"Templates",
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"Helm");
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DirectoryCopy.Copy(templateDirectoryPath, chartDirectoryPath);
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// Write Chart.yaml
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//
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// apiVersion: v1
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// name: <appname>
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// version: <version>
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// appVersion: <version>
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File.WriteAllLines(Path.Combine(chartDirectoryPath, "Chart.yaml"), new[]
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{
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$"apiVersion: v1",
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$"name: {application.Name.ToLowerInvariant()}",
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$"version: {application.Version.Replace('+', '-')}",
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$"appVersion: {application.Version.Replace('+', '-')}"
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});
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// Write values.yaml
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//
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// image:
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// repository: rynowak.azurecr.io/rochambot/gamemaster
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File.WriteAllLines(Path.Combine(chartDirectoryPath, "values.yaml"), new[]
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{
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$"image:",
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$" repository: {container.ImageName}",
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});
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console.Out.WriteLine("Packaging Helm Chart...");
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await Process.ExecuteAsync(
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"helm",
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$"package . -d {outputDirectoryPath}",
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workingDir: chartDirectoryPath,
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stdOut: o =>
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{
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console.SetTerminalForeground(ConsoleColor.Gray);
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console.Out.WriteLine("\t" + o);
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console.ResetTerminalForegroundColor();
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},
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stdErr: o =>
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{
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console.SetTerminalForeground(ConsoleColor.Red);
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console.Error.WriteLine("\t" + o);
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console.ResetTerminalForegroundColor();
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});
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}
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finally
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{
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Directory.Delete(directoryPath, recursive: true);
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}
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}
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}
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}

‎src/dotnet-opulence/PackageCommandHandler.cs

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@@ -1,7 +1,6 @@
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using System;
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using System.CommandLine;
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using System.CommandLine.Invocation;
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using System.ComponentModel;
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using System.IO;
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using System.Linq;
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using System.Text;
@@ -48,6 +47,10 @@ public static async Task ExecuteAsync(IConsole console, string projectFilePath)
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{
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await BuildContainerImageAsync(console, application, container);
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}
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else if (step is HelmChartStep chart)
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{
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await BuildHelmChartAsync(console, application, application.Steps.Get<ContainerStep>()!, chart);
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}
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}
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catch (ApplicationException ex)
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{
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var application = new Application()
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{
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Name = Path.GetFileNameWithoutExtension(projectFilePath),
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ProjectFilePath = projectFilePath,
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ProjectFilePath = Path.GetFullPath(projectFilePath),
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Steps =
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{
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new ContainerStep(),
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new HelmChartStep(),
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},
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};
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container.ImageTag ??= application.Version.Replace("+", "-");
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}
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private static Task BuildHelmChartAsync(IConsole console, Application application, ContainerStep container, HelmChartStep chart)
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{
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var outputDirectoryPath = Path.Combine(Path.GetDirectoryName(application.ProjectFilePath)!, "bin");
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return HelmChartGenerator.GenerateAsync(console, application, container, chart, outputDirectoryPath);
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}
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public class PackageGlobals
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{
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public Application? App;

‎src/dotnet-opulence/Templates/Helm/templates/_helpers.tpl

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{{/* vim: set filetype=mustache: */}}
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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "thischart.name" -}}
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{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Create a default fully qualified app name.
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We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
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If release name contains chart name it will be used as a full name.
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*/}}
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{{- define "thischart.fullname" -}}
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{{- if .Values.fullnameOverride -}}
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{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- $name := default .Chart.Name .Values.nameOverride -}}
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{{- if contains $name .Release.Name -}}
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{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{/*
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Create chart name and version as used by the chart label.
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*/}}
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{{- define "thischart.chart" -}}
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{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Common labels
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*/}}
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{{- define "thischart.labels" -}}
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app.kubernetes.io/name: {{ include "thischart.name" . }}
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helm.sh/chart: {{ include "thischart.chart" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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{{- if .Chart.AppVersion }}
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app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
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{{- end }}
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app.kubernetes.io/managed-by: {{ .Release.Service }}
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{{- end -}}

‎src/dotnet-opulence/Templates/Helm/templates/deployment.yaml

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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{ include "thischart.fullname" . }}
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labels:
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{{ include "thischart.labels" . | indent 4 }}
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spec:
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replicas: 1
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selector:
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matchLabels:
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app.kubernetes.io/name: {{ include "thischart.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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template:
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metadata:
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labels:
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app.kubernetes.io/name: {{ include "thischart.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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spec:
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containers:
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- name: {{ .Chart.Name }}
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image: {{ .Values.image.repository }}:{{ .Chart.AppVersion }}
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imagePullPolicy: Always
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livenessProbe:
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httpGet:
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path: /healthz
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port: 80
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initialDelaySeconds: 5
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periodSeconds: 5
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ports:
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- containerPort: 80

‎src/dotnet-opulence/Templates/Helm/templates/service.yaml

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kind: Service
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apiVersion: v1
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metadata:
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name: {{ include "thischart.name" . }}
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labels:
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app.kubernetes.io/name: {{ include "thischart.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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spec:
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selector:
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app.kubernetes.io/name: {{ include "thischart.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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ports:
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- name: http
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protocol: TCP
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port: 80
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type: LoadBalancer

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