From 8388d4459ab9e5877b71dc77108d1143807a86d4 Mon Sep 17 00:00:00 2001
From: Anna Kapuscinska <anna@isovalent.com>
Date: Tue, 5 Dec 2023 15:05:22 +0000
Subject: [PATCH] helm: Add extensions templates

The goal is to make it easy to build custom distributions of Tetragon Helm
chart.

Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
---
 .../kubernetes/tetragon/templates/_container_tetragon.tpl  | 1 +
 install/kubernetes/tetragon/templates/_extensions.tpl      | 7 +++++++
 install/kubernetes/tetragon/templates/daemonset.yaml       | 3 +++
 .../kubernetes/tetragon/templates/tetragon_configmap.yaml  | 1 +
 4 files changed, 12 insertions(+)
 create mode 100644 install/kubernetes/tetragon/templates/_extensions.tpl

diff --git a/install/kubernetes/tetragon/templates/_container_tetragon.tpl b/install/kubernetes/tetragon/templates/_container_tetragon.tpl
index a11690e9dc4..03617f510be 100644
--- a/install/kubernetes/tetragon/templates/_container_tetragon.tpl
+++ b/install/kubernetes/tetragon/templates/_container_tetragon.tpl
@@ -51,6 +51,7 @@
       mountPath: {{ .mountPath }}
       readOnly: {{ .readOnly }}
 {{- end }}
+    {{- include "tetragon.volumemounts.extra" . | nindent 4 }}
   env:
     - name: NODE_NAME
       valueFrom:
diff --git a/install/kubernetes/tetragon/templates/_extensions.tpl b/install/kubernetes/tetragon/templates/_extensions.tpl
new file mode 100644
index 00000000000..8e160597aa3
--- /dev/null
+++ b/install/kubernetes/tetragon/templates/_extensions.tpl
@@ -0,0 +1,7 @@
+{{- define "configmap.extra" -}}{{- end }}
+
+{{- define "volumes.extra" -}}{{- end }}
+
+{{- define "tetragon.volumemounts.extra" -}}{{- end }}
+
+{{- define "initcontainers.extra" -}}{{- end }}
diff --git a/install/kubernetes/tetragon/templates/daemonset.yaml b/install/kubernetes/tetragon/templates/daemonset.yaml
index 28e474b4173..f612f3c5376 100644
--- a/install/kubernetes/tetragon/templates/daemonset.yaml
+++ b/install/kubernetes/tetragon/templates/daemonset.yaml
@@ -50,6 +50,8 @@ spec:
       securityContext:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      initContainers:
+      {{- include "initcontainers.extra" . | nindent 6 }}
       containers:
 {{- if eq .Values.export.mode "stdout" }}
       {{- include "container.export.stdout" . | nindent 6 -}}
@@ -102,6 +104,7 @@ spec:
         hostPath:
           path: {{ .mountPath }}
 {{- end }}
+      {{- include "volumes.extra" . | nindent 6 }}
 {{- with .Values.updateStrategy }}
   updateStrategy:
     {{- toYaml . | nindent 4 }}
diff --git a/install/kubernetes/tetragon/templates/tetragon_configmap.yaml b/install/kubernetes/tetragon/templates/tetragon_configmap.yaml
index a0988139cd1..46f6354eb46 100644
--- a/install/kubernetes/tetragon/templates/tetragon_configmap.yaml
+++ b/install/kubernetes/tetragon/templates/tetragon_configmap.yaml
@@ -56,3 +56,4 @@ data:
   enable-msg-handling-latency: "true"
 {{- end }}
   enable-pod-info: {{ .Values.tetragonOperator.podInfo.enabled | quote }}
+  {{- include "configmap.extra" . | nindent 2 }}