make simpleapp helm template

Signed-off-by: Xe Iaso <me@xeiaso.net>

12 files changed, 407 insertions, 9 deletions

diff --git a/Earthfile b/Earthfile
index 250993c..d3b04c0 100644
--- a/Earthfile
+++ b/Earthfile
@@ -35,8 +35,6 @@ build:
     ARG GOARCH=amd64
     ARG GOARM
 
-    RUN go mod download
-
     COPY . .
     ARG VERSION=$(git describe --tags --always --dirty)
     RUN --mount=type=cache,target=/root/.cache go build -o /app/bin/${PROGRAM} -ldflags="-X within.website/x.Version=${VERSION}" ./cmd/${PROGRAM}
@@ -131,6 +129,11 @@ hlang:
 
     SAVE IMAGE --push ghcr.io/xe/x/hlang:latest
 
+httpdebug:
+    FROM +ship --PROGRAM=httpdebug --GOARCH=amd64
+    CMD ["/app/bin/httpdebug"]
+    SAVE IMAGE --push ghcr.io/xe/x/httpdebug:latest
+
 mi:
     FROM +runtime
 
@@ -291,6 +294,7 @@ all:
     BUILD --pass-args --platform=linux/amd64 +future-sight
     BUILD --pass-args --platform=linux/amd64 +hdrwtch
     BUILD --pass-args --platform=linux/amd64 +hlang
+    BUILD --pass-args --platform=linux/amd64 +httpdebug
     BUILD --pass-args --platform=linux/amd64 +mi
     BUILD --pass-args --platform=linux/amd64 +mimi
     BUILD --pass-args --platform=linux/amd64 +relayd
diff --git a/cmd/httpdebug/main.go b/cmd/httpdebug/main.go
index 1f7a042..8162bc2 100644
--- a/cmd/httpdebug/main.go
+++ b/cmd/httpdebug/main.go
@@ -8,6 +8,7 @@ import (
 	"log/slog"
 	"net/http"
 	"os"
+	"strings"
 
 	"within.website/x/internal"
 )
@@ -19,12 +20,28 @@ var (
 func main() {
 	internal.HandleStartup()
 
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("/.within/health", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "OK")
+	})
+
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		contains := strings.Contains(r.Header.Get("Accept"), "text/html")
+
+		if contains {
+			w.Header().Add("Content-Type", "text/html")
+			fmt.Fprint(w, "<pre id=\"main\"><code>")
+		}
+
+		fmt.Println("---")
+		r.Write(io.MultiWriter(w, os.Stdout))
+
+		if contains {
+			fmt.Fprintln(w, "</pre></code>")
+		}
+	})
+
 	slog.Info("listening", "url", "http://localhost"+*bind)
-	log.Fatal(http.ListenAndServe(*bind, http.HandlerFunc(
-		func(w http.ResponseWriter, r *http.Request) {
-			fmt.Println("---")
-			r.Write(io.MultiWriter(w, os.Stdout))
-			fmt.Println("---")
-		},
-	)))
+	log.Fatal(http.ListenAndServe(*bind, mux))
 }
diff --git a/kube/helm/.gitignore b/kube/helm/.gitignore
new file mode 100644
index 0000000..aa1ec1e
--- /dev/null
+++ b/kube/helm/.gitignore
@@ -0,0 +1 @@
+*.tgz
diff --git a/kube/helm/simpleapp/.helmignore b/kube/helm/simpleapp/.helmignore
new file mode 100644
index 0000000..0e8a0eb
--- /dev/null
+++ b/kube/helm/simpleapp/.helmignore
@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
diff --git a/kube/helm/simpleapp/Chart.yaml b/kube/helm/simpleapp/Chart.yaml
new file mode 100644
index 0000000..e2c8a9e
--- /dev/null
+++ b/kube/helm/simpleapp/Chart.yaml
@@ -0,0 +1,24 @@
+apiVersion: v2
+name: simpleapp
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "latest"
diff --git a/kube/helm/simpleapp/templates/NOTES.txt b/kube/helm/simpleapp/templates/NOTES.txt
new file mode 100644
index 0000000..8ad8bbb
--- /dev/null
+++ b/kube/helm/simpleapp/templates/NOTES.txt
@@ -0,0 +1,22 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "simpleapp.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "simpleapp.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "simpleapp.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "simpleapp.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}
diff --git a/kube/helm/simpleapp/templates/_helpers.tpl b/kube/helm/simpleapp/templates/_helpers.tpl
new file mode 100644
index 0000000..f35c5ce
--- /dev/null
+++ b/kube/helm/simpleapp/templates/_helpers.tpl
@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "simpleapp.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "simpleapp.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "simpleapp.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "simpleapp.labels" -}}
+helm.sh/chart: {{ include "simpleapp.chart" . }}
+{{ include "simpleapp.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "simpleapp.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "simpleapp.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "simpleapp.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "simpleapp.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
diff --git a/kube/helm/simpleapp/templates/deployment.yaml b/kube/helm/simpleapp/templates/deployment.yaml
new file mode 100644
index 0000000..cec8c0c
--- /dev/null
+++ b/kube/helm/simpleapp/templates/deployment.yaml
@@ -0,0 +1,65 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "simpleapp.fullname" . }}
+  labels:
+    {{- include "simpleapp.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "simpleapp.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "simpleapp.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          livenessProbe:
+            {{- toYaml .Values.livenessProbe | nindent 12 }}
+          readinessProbe:
+            {{- toYaml .Values.readinessProbe | nindent 12 }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          {{- with .Values.volumeMounts }}
+          volumeMounts:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+      {{- with .Values.volumes }}
+      volumes:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
diff --git a/kube/helm/simpleapp/templates/ingress.yaml b/kube/helm/simpleapp/templates/ingress.yaml
new file mode 100644
index 0000000..751e719
--- /dev/null
+++ b/kube/helm/simpleapp/templates/ingress.yaml
@@ -0,0 +1,43 @@
+{{- if .Values.ingress.enabled -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "simpleapp.fullname" . }}
+  labels:
+    {{- include "simpleapp.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with .Values.ingress.className }}
+  ingressClassName: {{ . }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- with .pathType }}
+            pathType: {{ . }}
+            {{- end }}
+            backend:
+              service:
+                name: {{ include "simpleapp.fullname" $ }}
+                port:
+                  number: {{ $.Values.service.port }}
+          {{- end }}
+    {{- end }}
+{{- end }}
diff --git a/kube/helm/simpleapp/templates/service.yaml b/kube/helm/simpleapp/templates/service.yaml
new file mode 100644
index 0000000..2fdfcb1
--- /dev/null
+++ b/kube/helm/simpleapp/templates/service.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "simpleapp.fullname" . }}
+  labels:
+    {{- include "simpleapp.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "simpleapp.selectorLabels" . | nindent 4 }}
diff --git a/kube/helm/simpleapp/templates/tests/test-connection.yaml b/kube/helm/simpleapp/templates/tests/test-connection.yaml
new file mode 100644
index 0000000..c9dc201
--- /dev/null
+++ b/kube/helm/simpleapp/templates/tests/test-connection.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "simpleapp.fullname" . }}-test-connection"
+  labels:
+    {{- include "simpleapp.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "simpleapp.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never
diff --git a/kube/helm/simpleapp/values.yaml b/kube/helm/simpleapp/values.yaml
new file mode 100644
index 0000000..42fd2a7
--- /dev/null
+++ b/kube/helm/simpleapp/values.yaml
@@ -0,0 +1,107 @@
+# Default values for simpleapp.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# This will set the replicaset count more information can be found here: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
+replicaCount: 1
+
+# This sets the container image more information can be found here: https://kubernetes.io/docs/concepts/containers/images/
+image:
+  repository: nginx
+  # This sets the pull policy for images.
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+
+# This is for the secretes for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+imagePullSecrets: []
+# This is to override the chart name.
+nameOverride: ""
+fullnameOverride: ""
+
+# This is for setting Kubernetes Annotations to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+podAnnotations: {}
+# This is for setting Kubernetes Labels to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
+podLabels: {}
+
+podSecurityContext:
+  fsGroup: 1000
+
+securityContext:
+  capabilities:
+    drop:
+    - ALL
+  runAsNonRoot: true
+  runAsUser: 1000
+  runAsGroup: 1000
+  allowPrivilegeEscalation: false
+  seccompProfile:
+    type: RuntimeDefault
+
+# This is for setting up a service more information can be found here: https://kubernetes.io/docs/concepts/services-networking/service/
+service:
+  # This sets the service type more information can be found here: https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services-service-types
+  type: ClusterIP
+  # This sets the ports more information can be found here: https://kubernetes.io/docs/concepts/services-networking/service/#field-spec-ports
+  port: 80
+
+# This block is for setting up the ingress for more information can be found here: https://kubernetes.io/docs/concepts/services-networking/ingress/
+ingress:
+  enabled: false
+  className: ""
+  annotations:
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+    cert-manager.io/cluster-issuer: "letsencrypt-prod"
+  hosts:
+    - host: chart-example.local
+      paths:
+        - path: /
+          pathType: ImplementationSpecific
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+# This is to setup the liveness and readiness probes more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
+livenessProbe:
+  httpGet:
+    path: /.within/health
+    port: http
+readinessProbe:
+  httpGet:
+    path: /.within/health
+    port: http
+
+# Additional volumes on the output Deployment definition.
+volumes: []
+# - name: foo
+#   secret:
+#     secretName: mysecret
+#     optional: false
+
+# Additional volumeMounts on the output Deployment definition.
+volumeMounts: []
+# - name: foo
+#   mountPath: "/etc/foo"
+#   readOnly: true
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}