ZDDC/helm/zddc-server-prod/templates/_helpers.tpl
ZDDC 607121a9ea feat: example helm charts for zddc-server (production + dev)
Two charts under helm/, both compile zddc-server from source via an
init container — no container image registry, no pre-built binary.
The init container clones the repo at a configured git ref, runs
`go build`, and writes the binary into a shared emptyDir; the main
container is alpine + the freshly built static binary.

helm/zddc-server-prod/  Production-shaped:
                        - gitRef pinned to a stable tag in
                          values.yaml.example (zddc-server-v0.0.7).
                        - imagePullPolicy IfNotPresent.
                        - Slower probe cadence (30s liveness, 10s
                          readiness).
                        - ZDDC_LOG_LEVEL=info.
                        - replicaCount: 1 (operators raise as needed
                          when backed by a shared filesystem).

helm/zddc-server-dev/   Dev/soak-shaped:
                        - gitRef defaults to "main" (rebuilt every pod
                          restart). build-time annotation forces
                          recreate on every helm upgrade.
                        - imagePullPolicy Always on the build image
                          so the latest golang:1.24-alpine is pulled.
                        - Faster probe cadence (10s liveness, 5s
                          readiness) — fail-fast in dev.
                        - ZDDC_LOG_LEVEL=debug. NOTE: debug logs every
                          request's full header map (includes auth
                          tokens / cookies) — this chart is for
                          private dev namespaces only.
                        - Strategy: Recreate (single replica racing
                          on different SHAs would be a mess).

Both charts:

- Wire the ZDDC_* env-var contract (ZDDC_ROOT, ZDDC_ADDR,
  ZDDC_TLS_CERT=none, ZDDC_INSECURE_DIRECT=1, ZDDC_EMAIL_HEADER,
  ZDDC_CORS_ORIGIN, ZDDC_LOG_LEVEL, ZDDC_INDEX_PATH).
- Mount a caller-supplied PVC at ZDDC_ROOT (chart does not create the
  PVC; operators provision storage themselves).
- Optional Ingress (ingress.enabled: true). TLS is expected to be
  terminated upstream of the pod; the pod listens on plain HTTP.
- No secrets in values.yaml.example. ACL email lists go in .zddc files
  inside the data volume; image-pull and TLS secrets are referenced by
  name only.

helm/README.md documents the design rationale (why build from source
instead of using a registry image), a quick-start example, and the
explicit list of what the charts do and don't do.

Note: `helm lint` cannot be run in this dev environment (helm isn't
installed). YAML syntax of Chart.yaml and values.yaml.example
verified via `python3 -c "yaml.safe_load(...)"`. Operators should
run `helm lint` and `helm template` before installing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 09:48:02 -05:00

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1.1 KiB
Smarty

{{/*
Common labels and the fullname helper. Stays minimal; chart consumers
who want richer labels can override via metadata.labels in their
values.yaml or post-render kustomize.
*/}}
{{- define "zddc-server.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- define "zddc-server.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- define "zddc-server.labels" -}}
app.kubernetes.io/name: {{ include "zddc-server.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
app.kubernetes.io/version: {{ .Values.zddc.gitRef | quote }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
helm.sh/chart: {{ printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" }}
{{- end -}}
{{- define "zddc-server.selectorLabels" -}}
app.kubernetes.io/name: {{ include "zddc-server.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end -}}