feat(helm): Build updater chart

charts/updater/.helmignore

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+*.gz
+*.tar
+*.tar.gz
+tmp/
+temp/

charts/updater/Chart.yaml

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+apiVersion: v2
+name: drand-oracle-updater
+description: A Helm chart for Kubernetes to deploy the Drand Oracle Updater application
+type: application
+version: 0.1.0
+appVersion: 0.1.0

charts/updater/templates/_helpers.tpl

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+{{/*
+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).
+*/}}
+{{- define "updater.fullname" -}}
+drand-oracle-updater
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "updater.labels" -}}
+app.kubernetes.io/name: {{ include "updater.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/version: {{ .Chart.AppVersion }}
+app.kubernetes.io/managed-by: Helm
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "updater.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Selector labels
+*/}}
+{{- define "updater.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "updater.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}

charts/updater/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{include "updater.fullname" .}}
+  labels: {{- include "updater.labels" . | nindent 4}}
+data:
+  DRAND_URLS: "{{ .Values.config.drandUrls }}"
+  CHAIN_HASH: "{{ .Values.config.chainHash }}"
+  DRAND_ORACLE_ADDRESS: "{{ .Values.config.drandOracleAddress }}"
+  RPC: "{{ .Values.config.rpc }}"
+  CHAIN_ID: "{{ .Values.config.chainId }}"
+  SET_RANDOMNESS_GAS_LIMIT: "{{ .Values.config.setRandomnessGasLimit }}"
+  GENESIS_ROUND: "{{ .Values.config.genesisRound }}"

charts/updater/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "updater.fullname" . }}
+  labels:
+    {{- include "updater.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "updater.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "updater.selectorLabels" . | nindent 8 }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          envFrom:
+            - configMapRef:
+                name: {{ include "updater.fullname" . }}
+            - secretRef:
+                name: {{ if .Values.useExistingSecrets }}{{ .Values.existingSecretName }}{{ else }}{{ include "updater.fullname" . }}{{ end }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}

charts/updater/templates/secret.yaml

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+{{- if not .Values.useExistingSecrets }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "updater.fullname" . }}
+type: Opaque
+data:
+  SIGNER_PRIVATE_KEY: {{ .Values.secrets.signerPrivateKey | b64enc }}
+  SENDER_PRIVATE_KEY: {{ .Values.secrets.senderPrivateKey | b64enc }}
+{{- end }}

charts/updater/values.yaml

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+replicaCount: 1
+
+image:
+  repository: ghcr.io/galxe/drand-oracle/drand-oracle-updater
+  pullPolicy: IfNotPresent
+  tag: "latest"
+
+resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 128Mi
+
+config:
+  drandUrls: "https://api.drand.sh,https://drand.cloudflare.com"
+  chainHash: "8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce"
+  drandOracleAddress: "0xF3C4a5FeEDA8eBd439f9C22DEF3f1a3Cb326540A"
+  rpc: "http://localhost:8545"
+  chainId: "31337"
+  genesisRound: "4496672"
+  setRandomnessGasLimit: "500000"
+
+useExistingSecrets: false
+existingSecretName: ""
+
+# Only used if useExistingSecrets is false
+secrets:
+  # Below example keys are from Anvil. Do not use them in production.
+  signerPrivateKey: "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
+  senderPrivateKey: "0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d"