From c87cee4deb401da2f88c65c60c97dd9b7044df92 Mon Sep 17 00:00:00 2001
From: Starttoaster <b.butler@chia.net>
Date: Wed, 12 Jun 2024 15:30:53 -0700
Subject: [PATCH] Add optional ServiceMonitor to the generic chart

---
 charts/generic/Chart.yaml                    |  2 +-
 charts/generic/templates/servicemonitor.yaml | 43 ++++++++++++++++++++
 charts/generic/values.yaml                   | 18 ++++++++
 3 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 charts/generic/templates/servicemonitor.yaml

diff --git a/charts/generic/Chart.yaml b/charts/generic/Chart.yaml
index 5c3d455..c9f2f1c 100644
--- a/charts/generic/Chart.yaml
+++ b/charts/generic/Chart.yaml
@@ -2,4 +2,4 @@ apiVersion: v2
 name: generic
 description: A generic helm chart that handles a bunch of common application deploy cases
 type: application
-version: 1.10.0
+version: 1.11.0
diff --git a/charts/generic/templates/servicemonitor.yaml b/charts/generic/templates/servicemonitor.yaml
new file mode 100644
index 0000000..3c07f8d
--- /dev/null
+++ b/charts/generic/templates/servicemonitor.yaml
@@ -0,0 +1,43 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "generic.fullname" . }}
+  labels:
+    {{- include "generic.labels" . | nindent 4 }}
+  {{- if .Values.serviceMonitor.additionalLabels }}
+    {{- toYaml .Values.serviceMonitor.additionalLabels | nindent 4 }}
+  {{- end }}
+  {{- if .Values.serviceMonitor.annotations }}
+  annotations: {{ toYaml .Values.serviceMonitor.annotations | nindent 4 }}
+  {{- end }}
+spec:
+  endpoints:
+    - interval: 30s
+      port: {{ .Values.serviceMonitor.endpointPort }}
+    {{- if .Values.serviceMonitor.relabelings }}
+      relabelings: {{ toYaml .Values.serviceMonitor.relabelings | nindent 8 }}
+    {{- end }}
+    {{- if .Values.serviceMonitor.metricRelabelings }}
+      metricRelabelings: {{ toYaml .Values.serviceMonitor.metricRelabelings | nindent 8 }}
+    {{- end }}
+{{- if .Values.serviceMonitor.namespaceSelector }}
+  namespaceSelector: {{ toYaml .Values.serviceMonitor.namespaceSelector | nindent 4 }}
+{{- else }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+{{- end }}
+{{- if .Values.serviceMonitor.jobLabel }}
+  jobLabel: {{ .Values.serviceMonitor.jobLabel | quote }}
+{{- end }}
+{{- if .Values.serviceMonitor.targetLabels }}
+  targetLabels:
+  {{- range .Values.serviceMonitor.targetLabels }}
+    - {{ . }}
+  {{- end }}
+{{- end }}
+  selector:
+    matchLabels:
+      {{- include "generic.labels" . | nindent 6 }}
+{{- end }}
diff --git a/charts/generic/values.yaml b/charts/generic/values.yaml
index fe5bff3..c499014 100644
--- a/charts/generic/values.yaml
+++ b/charts/generic/values.yaml
@@ -148,6 +148,24 @@ networkPolicy:
 #        - protocol: TCP
 #          port: 8555
 
+serviceMonitor:
+  enabled: false
+  # Changes the servicemonitor's spec.endpoints[0].port
+  # Can be a port number or name
+  endpointPort: metrics
+  ## The label to use to retrieve the job name from.
+  ## jobLabel: "app.kubernetes.io/name"
+  additionalLabels: {}
+  annotations: {}
+  namespaceSelector: {}
+  ## Default: scrape .Release.Namespace or namespaceOverride only
+  ## To scrape all, use the following:
+  ## namespaceSelector:
+  ##   any: true
+  targetLabels: []
+  relabelings: []
+  metricRelabelings: []
+
 # Creates a secret with the following values, and mounts as env into the main deployment container
 secretEnvironment: {}
 #  MY_KEY: "My Value"