From f715b5c5583da232f818f4bce7f68a46f1de9f1f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bernard=20G=C3=BCtermann?= <bernard.gutermann@sekops.ch>
Date: Sat, 21 Sep 2024 20:29:05 +0200
Subject: [PATCH] fix existing media pvc issues
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Signed-off-by: Bernard Gütermann <bernard.gutermann@sekops.ch>
---
 README.md                                          |  3 +++
 .../templates/sharedStorage.pvc.yaml               |  2 ++
 helm-adopt.sh                                      | 14 ++++++++++++++
 3 files changed, 19 insertions(+)
 create mode 100755 helm-adopt.sh

diff --git a/README.md b/README.md
index d6b0889..65ab41d 100644
--- a/README.md
+++ b/README.md
@@ -177,6 +177,9 @@ transmission:
 
 See the chart [values.yaml](charts/k8s-mediamanager/values.yaml) for more details on available parameters.
 
+If you already have pre-existing volumes you can patch them using the `helm-adopt.sh` script to avoid having the 
+`error : resources already exist` issue when running the install script
+
 ## Usage
 
 Upon deploying the chart with the command above the following endpoints will become available externally:
diff --git a/charts/k8s-mediamanager/templates/sharedStorage.pvc.yaml b/charts/k8s-mediamanager/templates/sharedStorage.pvc.yaml
index c5ad778..a067c66 100644
--- a/charts/k8s-mediamanager/templates/sharedStorage.pvc.yaml
+++ b/charts/k8s-mediamanager/templates/sharedStorage.pvc.yaml
@@ -1,4 +1,5 @@
 {{- with .Values.general.sharedStorage }}
+{{- if not (lookup "v1" "persistentVolumeClaim" "" .persistentVolumeClaim.claimName) }}
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
@@ -22,4 +23,5 @@ spec:
   selector:
   {{- toYaml . | nindent 4 }}
   {{- end }}
+{{- end }}
 {{- end }}
\ No newline at end of file
diff --git a/helm-adopt.sh b/helm-adopt.sh
new file mode 100755
index 0000000..6311cfc
--- /dev/null
+++ b/helm-adopt.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# This script is used to adopt pre-existing pvcs into a Helm release. It is used in the
+# following way:
+#  helm-adpot.sh <namespace> <release-name>
+
+[ "$#" -eq 2 ] || { echo "Usage: $0 <namespace> <release-name>"; exit 1; }
+
+NAMESPACE=$1
+RELEASE_NAME=$2
+kubectl get -n $NAMESPACE pvc -o name | xargs -I % kubectl label -n $NAMESPACE % app.kubernetes.io/managed-by=Helm
+kubectl get -n $NAMESPACE pvc -o name | xargs -I % kubectl annotate -n $NAMESPACE % meta.helm.sh/release-name=$RELEASE_NAME
+kubectl get -n $NAMESPACE pvc -o name | xargs -I % kubectl annotate -n $NAMESPACE % meta.helm.sh/release-namespace=$NAMESPACE
+kubectl get -n $NAMESPACE pvc -o name | xargs -I % kubectl annotate -n $NAMESPACE % helm.sh/resource-policy=keep