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instrumental/chart/templates/_helpers.tpl
Sheogorath e868f41923
fix(chart): Fix gitops-incompatible random rolling ()
This patch reworks the Pod rolling mechanism, which is supposed to update Pods
with each migration run, but since the it generates a new random value on each
helm execution, this will constantly roll all pods in a GitOps driven deployment,
which reconciles the helm release.

This is resolved by fixing the upgrade to the `.Release.Revision`, which should
stay identical, unless config or helm release version have been changed. Further
it introduces automatic rolls based on adjustments to the environment variables
and secrets.

The implementation uses a helper template, following the 1-2-N rule, and omitting
code duplication.

References:
https://helm.sh/docs/chart_template_guide/builtin_objects/
https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
2022-11-10 19:10:38 +01:00

139 lines
4.2 KiB
Smarty

{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "mastodon.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 "mastodon.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 "mastodon.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
{{- end }}
{{/*
Common labels
*/}}
{{- define "mastodon.labels" -}}
helm.sh/chart: {{ include "mastodon.chart" . }}
{{ include "mastodon.selectorLabels" . }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- end }}
{{/*
Selector labels
*/}}
{{- define "mastodon.selectorLabels" -}}
app.kubernetes.io/name: {{ include "mastodon.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end }}
{{/*
Rolling pod annotations
*/}}
{{- define "mastodon.rollingPodAnnotations" -}}
rollme: {{ .Release.Revision | quote }}
checksum/config-secrets: {{ include ( print $.Template.BasePath "/secrets.yaml" ) . | sha256sum | quote }}
checksum/config-configmap: {{ include ( print $.Template.BasePath "/configmap-env.yaml" ) . | sha256sum | quote }}
{{- end }}
{{/*
Create the name of the service account to use
*/}}
{{- define "mastodon.serviceAccountName" -}}
{{- if .Values.serviceAccount.create }}
{{- default (include "mastodon.fullname" .) .Values.serviceAccount.name }}
{{- else }}
{{- default "default" .Values.serviceAccount.name }}
{{- end }}
{{- end }}
{{/*
Create a default fully qualified name for dependent services.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
*/}}
{{- define "mastodon.elasticsearch.fullname" -}}
{{- printf "%s-%s" .Release.Name "elasticsearch" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- define "mastodon.redis.fullname" -}}
{{- printf "%s-%s" .Release.Name "redis" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- define "mastodon.postgresql.fullname" -}}
{{- printf "%s-%s" .Release.Name "postgresql" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Get the mastodon secret.
*/}}
{{- define "mastodon.secretName" -}}
{{- if .Values.mastodon.secrets.existingSecret }}
{{- printf "%s" (tpl .Values.mastodon.secrets.existingSecret $) -}}
{{- else -}}
{{- printf "%s" (include "common.names.fullname" .) -}}
{{- end -}}
{{- end -}}
{{/*
Get the postgresql secret.
*/}}
{{- define "mastodon.postgresql.secretName" -}}
{{- if (and (or .Values.postgresql.enabled .Values.postgresql.postgresqlHostname) .Values.postgresql.auth.existingSecret) }}
{{- printf "%s" (tpl .Values.postgresql.auth.existingSecret $) -}}
{{- else if .Values.postgresql.enabled -}}
{{- printf "%s-postgresql" (tpl .Release.Name $) -}}
{{- else -}}
{{- printf "%s" (include "common.names.fullname" .) -}}
{{- end -}}
{{- end -}}
{{/*
Get the redis secret.
*/}}
{{- define "mastodon.redis.secretName" -}}
{{- if .Values.redis.auth.existingSecret }}
{{- printf "%s" (tpl .Values.redis.auth.existingSecret $) -}}
{{- else if .Values.redis.existingSecret }}
{{- printf "%s" (tpl .Values.redis.existingSecret $) -}}
{{- else -}}
{{- printf "%s-redis" (tpl .Release.Name $) -}}
{{- end -}}
{{- end -}}
{{/*
Return true if a mastodon secret object should be created
*/}}
{{- define "mastodon.createSecret" -}}
{{- if (or
(and .Values.mastodon.s3.enabled (not .Values.mastodon.s3.existingSecret))
(not .Values.mastodon.secrets.existingSecret )
(and (not .Values.postgresql.enabled) (not .Values.postgresql.auth.existingSecret))
) -}}
{{- true -}}
{{- end -}}
{{- end -}}