initial commit, adding helm chart

.github/workflows/release.yaml

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+name: release
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    # depending on default permission settings for your org (contents being read-only or read-write for workloads), you will have to add permissions
+    # see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "[email protected]"
+
+      - name: Install Helm
+        uses: azure/setup-helm@v3
+
+      - name: Helm Chart Releaser
+        uses: helm/[email protected]
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

charts/temporal-cloud-metrics-datadog/Chart.yaml

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+apiVersion: v2
+name: promql-to-dd-go
+version: 0.1.0
+description: |
+  A demonstrative Chart for deploying promql-to-dd-go to Kubernetes.
+  The Chart is provided as-is, without support. They are intended as reference material only.
+home: https://github.com/temporalio/samples-server/tree/main/cloud/observability/promql-to-dd-go
+keywords:
+  - temporal
+  - prometheus
+  - datadog
+maintainers:
+  - name: taonic
+type: application

charts/temporal-cloud-metrics-datadog/templates/NOTES.txt

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+Thank you for installing {{ .Chart.Name }}.
+
+Your release is named {{ .Release.Name }}.
+
+To learn more about the release, try:
+
+  $ helm status {{ .Release.Name }}
+  $ helm get all {{ .Release.Name }}

charts/temporal-cloud-metrics-datadog/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "promql-to-dd-go.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "promql-to-dd-go.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

charts/temporal-cloud-metrics-datadog/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "promql-to-dd-go.name" . }}
+  labels:
+    app: {{ template "promql-to-dd-go.name" . }}
+    chart: {{ template "promql-to-dd-go.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: {{ template "promql-to-dd-go.name" . }}
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "promql-to-dd-go.name" . }}
+        release: {{ .Release.Name }}
+      annotations:
+        checksum/secret: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
+    spec:
+      containers:
+      - name: promqltodd
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.imagePullPolicy }}
+        args:
+        - --client-cert=/var/run/secrets/ca_cert
+        - --client-key=/var/run/secrets/ca_key
+        - --prom-endpoint={{ .Values.prom_endpoint }}
+        - --query-interval-seconds={{ .Values.query_interval_seconds }}
+        env:
+        - name: DD_API_KEY
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "promql-to-dd-go.name" . }}-secrets
+              key: dd_api_key
+        volumeMounts:
+        - name: secrets
+          mountPath: /var/run/secrets
+          readOnly: true
+      volumes:
+      - name: secrets
+        secret:
+          secretName: {{ template "promql-to-dd-go.name" . }}-secrets

charts/temporal-cloud-metrics-datadog/templates/secret.yaml

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+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+  name: {{ template "promql-to-dd-go.name" . }}-secrets
+  labels:
+    app: {{ template "promql-to-dd-go.name" . }}
+    chart: {{ template "promql-to-dd-go.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+data:
+  ca_cert:
+    {{ .Values.ca_cert | b64enc }}
+  ca_key:
+    {{ .Values.ca_key | b64enc }}
+  dd_api_key:
+    {{ .Values.dd_api_key | b64enc }}

charts/temporal-cloud-metrics-datadog/test.file

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+test test
+test test

charts/temporal-cloud-metrics-datadog/values.yaml

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+# Default values for promql-to-dd-go.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+image:
+  repository: ghcr.io/temporalio/promql-to-dd-go
+  tag: latest
+  imagePullPolicy: Always