From 3c17c3bd46d6c406c32ca97b14e5fdc48b52a8a6 Mon Sep 17 00:00:00 2001
From: Stavros kois <s.kois@outlook.com>
Date: Tue, 6 Dec 2022 18:57:08 +0200
Subject: [PATCH] init work for ixVols

---
 .../lib/pod/volumes/_hostPathValidation.tpl   | 24 +++++++++++++++++++
 .../templates/lib/pod/volumes/_ixVols.tpl     | 15 ++++++++++--
 2 files changed, 37 insertions(+), 2 deletions(-)
 create mode 100644 library/common/1.0.0/templates/lib/pod/volumes/_hostPathValidation.tpl

diff --git a/library/common/1.0.0/templates/lib/pod/volumes/_hostPathValidation.tpl b/library/common/1.0.0/templates/lib/pod/volumes/_hostPathValidation.tpl
new file mode 100644
index 00000000..89fd6a09
--- /dev/null
+++ b/library/common/1.0.0/templates/lib/pod/volumes/_hostPathValidation.tpl
@@ -0,0 +1,24 @@
+{{- define "ix.v1.common.controller.volumes.hostPath.validation" -}}
+  {{- if $root.Values.global.defaults.validateHostPaths -}} {{/* TODO: global or per volume flag? */}}
+    {{- $incomingData := .incoming -}} {{/* TODO: change variable name... temp implementation */}}
+    {{- $allowed_paths := (list "mnt" "sys" "dev" "cluster") -}}
+    {{- $errorMessage := (printf "Invalid hostPath (%s). Allowed hostPaths are valid paths under a given pool. e.g. /mnt/POOL/DATASET, /mnt/POOL/DATASET/DIRECTORY" $incomingData) -}}
+    {{- $hostPath := splitList "/" $incomingData -}} {{/* Split the path into a list */}}
+    {{- $hostPath := (mustWithout $hostPath "") -}} {{/* Drop any list items with empty strings */}}
+    {{- $pathStart := (index $hostPath 0) -}}
+    {{- if not (mustHas ($pathStart $allowed_paths)) -}}
+      {{- fail $errorMessage -}}
+    {{- else if eq $pathStart "mnt" -}}
+      {{- if lt (len $hostPath) 3 -}}
+        {{- fail $errorMessage -}}
+      {{- end -}}
+    {{- else if eq $pathStart "cluster" -}}
+      {{- if lt (len $hostPath) 2 -}}
+        {{- fail $errorMessage -}}
+      {{- else if eq (index $hostPath 1) "ctdb_shared_vol" -}}
+        {{- fail $errorMessage -}}
+      {{- end -}}
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+{{/* TODO: unittests */}}
diff --git a/library/common/1.0.0/templates/lib/pod/volumes/_ixVols.tpl b/library/common/1.0.0/templates/lib/pod/volumes/_ixVols.tpl
index 46ae6fc6..7439c559 100644
--- a/library/common/1.0.0/templates/lib/pod/volumes/_ixVols.tpl
+++ b/library/common/1.0.0/templates/lib/pod/volumes/_ixVols.tpl
@@ -1,7 +1,18 @@
 {{- define "ix.v1.common.controller.volumes.ixVols" -}}
   {{- $index := .index -}}
   {{- $vol := .volume -}}
-  {{- $root := .root }}
+  {{- $root := .root -}}
+  {{- if not $vol.datasetName -}}
+    {{- fail (printf "Item (%s) is set as ixVolume type, but has no Dataset Name defined" $index) -}}
+  {{- end -}}
+  {{- if not (mustHas $vol.datasetName $root.ixVolumes) -}} {{/* Make sure the resolved datasetName is included in ixVolumes */}}
+    {{- fail (printf "Dataset Name on item (%s) does not exist in ixVolumes list" $index) -}}
+  {{- end }}
 - name: {{ $index }}
-
+  hostPath:
+    path: {{ required (printf "hostPath not set on item %s" $index) $vol.hostPath }}
+  {{- with $vol.hostPathType }}
+    type: {{ tpl . $root }}
+  {{- end -}}
 {{- end -}}
+{{/* TODO: unittests */}}