feat: Add chart for validator-exporter (#21)

charts/validator-exporter/.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/

charts/validator-exporter/Chart.yaml

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+---
+apiVersion: v2
+name: validator-exporter
+description: A Helm chart for validator-exporter
+type: application
+version: 1.0.0
+appVersion: 1.0.0

charts/validator-exporter/README.md

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+# Validator Exporter
+
+Prometheus exporter for cosmos validators metrics - [validator-exporter](https://github.com/archway-network/validator-exporter)
+
+## Prerequisites
+
+Kubernetes 1.16+
+
+## Get Repository Info
+
+```console
+helm repo add archway-network https://archway-network.github.io/helm-charts
+helm repo update
+```
+
+_See [`helm repo`](https://helm.sh/docs/helm/helm_repo/) for command documentation._
+
+## Install Chart
+
+```console
+helm install [RELEASE_NAME] archway-network/validator-exporter
+```
+
+_See [configuration](#configuration) below._
+
+_See [helm install](https://helm.sh/docs/helm/helm_install/) for command documentation._
+
+## Uninstall Chart
+
+```console
+helm uninstall [RELEASE_NAME]
+```
+
+This removes all the Kubernetes components associated with the chart and deletes the release.
+
+_See [helm uninstall](https://helm.sh/docs/helm/helm_uninstall/) for command documentation._
+
+## Upgrading Chart
+
+```console
+helm upgrade [RELEASE_NAME] [CHART] --install
+```
+
+_See [helm upgrade](https://helm.sh/docs/helm/helm_upgrade/) for command documentation._
+
+## Configuration
+
+See [Customizing the Chart Before Installing](https://helm.sh/docs/intro/using_helm/#customizing-the-chart-before-installing).
+To see all configurable options with detailed comments, visit the chart's [values.yaml](./values.yaml), or run these configuration commands:
+
+```console
+helm show values archway-network/validator-exporter
+```

charts/validator-exporter/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "validator-exporter.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 "validator-exporter.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 "validator-exporter.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "validator-exporter.labels" -}}
+helm.sh/chart: {{ include "validator-exporter.chart" . }}
+{{ include "validator-exporter.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "validator-exporter.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "validator-exporter.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "validator-exporter.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "validator-exporter.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{/*
+Given a dictionary of variable=value pairs, render a container env block.
+Environment variables are sorted alphabetically
+*/}}
+{{- define "validator-exporter.renderEnv" -}}
+
+{{- $dict := . -}}
+
+{{- range keys . | sortAlpha }}
+{{- $val := pluck . $dict | first -}}
+{{- $valueType := printf "%T" $val -}}
+{{ if eq $valueType "map[string]interface {}" }}
+- name: {{ . }}
+{{ toYaml $val | indent 2 -}}
+{{- else if eq $valueType "string" }}
+{{- if regexMatch "valueFrom" $val }}
+- name: {{ . }}
+{{ $val | indent 2 }}
+{{- else }}
+- name: {{ . }}
+  value: {{ $val | quote }}
+{{- end }}
+{{- else }}
+- name: {{ . }}
+  value: {{ $val | quote }}
+{{- end }}
+{{- end -}}
+
+{{- end -}}

charts/validator-exporter/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "validator-exporter.fullname" . }}
+  labels:
+    {{- include "validator-exporter.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "validator-exporter.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      annotations:
+      {{- with .Values.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "validator-exporter.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.containerSecurityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          args:
+            - -p={{ .Values.service.port }}
+            - --log-level={{ .Values.logLevel }}
+          env:
+            {{- include "validator-exporter.renderEnv" .Values.env | nindent 12 }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/validator-exporter/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "validator-exporter.fullname" . }}
+  labels:
+    {{- include "validator-exporter.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "validator-exporter.selectorLabels" . | nindent 4 }}

charts/validator-exporter/templates/serviceMonitor.yaml

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+{{- if.Values.serviceMonitor.enabled -}}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "validator-exporter.fullname" . }}
+  labels:
+    {{- include "validator-exporter.labels" . | nindent 4 }}
+    {{- with .Values.serviceMonitor.additionalLabels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+spec:
+  jobLabel: {{ .Release.Name }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{- include "validator-exporter.selectorLabels" . | nindent 6 }}
+  endpoints:
+    - port: http
+      path: {{ .Values.serviceMonitor.telemetryPath }}
+      {{- with .Values.serviceMonitor.interval }}
+      interval: {{ . }}
+      {{- end }}
+      {{- with .Values.serviceMonitor.scrapeTimeout  }}
+      scrapeTimeout: {{ . }}
+      {{- end }}
+      {{- if .Values.serviceMonitor.metricRelabelings }}
+      metricRelabelings: {{ toYaml .Values.serviceMonitor.metricRelabelings | nindent 6 }}
+      {{- end }}
+      {{- if .Values.serviceMonitor.relabelings }}
+      relabelings: {{ toYaml .Values.serviceMonitor.relabelings | nindent 6 }}
+      {{- end }}
+  {{- if .Values.serviceMonitor.targetLabels }}
+  targetLabels:
+  {{- range .Values.serviceMonitor.targetLabels }}
+  - {{ . }}
+  {{- end }}
+  {{- end }}
+{{- end }}

charts/validator-exporter/values.yaml

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+image:
+  repository: ghcr.io/archway-network/validator-exporter
+  pullPolicy: IfNotPresent
+  tag: ""
+
+replicaCount: 1
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: {}
+
+podSecurityContext:
+  runAsNonRoot: true
+  runAsGroup: 65532
+  runAsUser: 65532
+  fsGroup: 65532
+  seccompProfile:
+    type: RuntimeDefault
+containerSecurityContext:
+  allowPrivilegeEscalation: false
+  capabilities:
+    drop:
+      - ALL
+  privileged: false
+
+service:
+  type: ClusterIP
+  port: 8008
+
+# env:
+#   GRPC_ADDR: grpc.titus.archway.io:443
+
+resources: {}
+nodeSelector: {}
+tolerations: []
+affinity: {}
+
+serviceMonitor:
+  enabled: false
+  additionalLabels: {}
+  interval: 1m
+  scrapeTimeout: 10s
+  telemetryPath: /metrics
+  targetLabels: []
+  metricRelabelings: []
+  relabelings: []
+
+logLevel: info