chore: add helm example

helm/.helmignore

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+# 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/

helm/Chart.yaml

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+apiVersion: v2
+name: seda-data-proxy
+description: A Helm chart for Kubernetes to deploy the SEDA Data Proxy.
+version: 0.1.0
+appVersion: "1.0"

helm/templates/_helpers.tpl

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+{{/*
+Generate a full name for the resources, optionally including the release name.
+*/}}
+{{- define "seda-data-proxy.fullname" -}}
+{{- printf "%s-%s" .Release.Name .Chart.Name | trunc 63 | trimSuffix "-" -}}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "seda-data-proxy.labels" -}}
+app.kubernetes.io/name: {{ include "seda-data-proxy.name" . }}
+helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "seda-data-proxy.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "seda-data-proxy.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Template for the name of the application
+*/}}
+{{- define "seda-data-proxy.name" -}}
+{{- .Chart.Name -}}
+{{- end }}

helm/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "seda-data-proxy.fullname" . }}-config
+data:
+  config.json: |
+    {
+      "routes": [
+        {
+          "path": "/*",
+          "upstreamUrl": "https://swapi.dev/api/",
+          "methods": ["GET"]
+        }
+      ]
+    }

helm/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "seda-data-proxy.fullname" . }}
+  labels:
+    {{- include "seda-data-proxy.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "seda-data-proxy.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "seda-data-proxy.selectorLabels" . | nindent 8 }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.service.port }}
+          env:
+            {{- range .Values.envVars }}
+            - name: {{ .name }}
+              value: {{ .value }}
+            {{- end }}
+            - name: SEDA_DATA_PROXY_PRIVATE_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "seda-data-proxy.fullname" . }}-secrets
+                  key: SEDA_DATA_PROXY_PRIVATE_KEY
+          args: ["run", {{ .Values.sedaProxyFlags }} ]
+          readinessProbe:
+            httpGet:
+              path: /status/health
+              port: {{ .Values.service.port }}
+          livenessProbe:
+            httpGet:
+              path: /status/health
+              port: {{ .Values.service.port }}
+          volumeMounts:
+          - name: config-volume
+            mountPath: /app/config.json
+            subPath: config.json
+      volumes:
+        - name: config-volume
+          configMap:
+            name: {{ include "seda-data-proxy.fullname" . }}-config

helm/templates/secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "seda-data-proxy.fullname" . }}-secrets
+  labels:
+    {{- include "seda-data-proxy.labels" . | nindent 4 }}
+type: Opaque
+data:
+  SEDA_DATA_PROXY_PRIVATE_KEY: {{ .Values.secret.sedaDataProxyPrivateKey | b64enc | quote }}

helm/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "seda-data-proxy.fullname" . }}
+  labels:
+    {{- include "seda-data-proxy.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.port }}
+  selector:
+    {{- include "seda-data-proxy.selectorLabels" . | nindent 4 }}

helm/values.yaml

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+image:
+  repository: ghcr.io/sedaprotocol/seda-data-proxy
+  tag: "v0.0.2"
+  pullPolicy: IfNotPresent
+
+service:
+  type: ClusterIP
+  port: 5384
+
+replicaCount: 1
+
+# export SEDA_PRIVATE_KEY=<KEY>
+# helm install my-release ./chart-name --set secret.sedaDataProxyPrivateKey=$SEDA_PRIVATE_KEY
+secret:
+  sedaDataProxyPrivateKey: ""
+
+# Uncomment for testing (itdisables request verification)
+# sedaProxyFlags: "--disable-proof"