Add extraArgs value for CSI (#526)

templates/csi-daemonset.yaml

@@ -37,6 +37,9 @@ spec:
           args:
             - --endpoint=/provider/vault.sock
             - --debug={{ .Values.csi.debug }}
+            {{- if .Values.csi.extraArgs }}
+              {{- toYaml .Values.csi.extraArgs | nindent 12 }}
+            {{- end }}
           volumeMounts:
             - name: providervol
               mountPath: "/provider"

test/unit/csi-daemonset.bats

@@ -110,6 +110,36 @@ load _helpers
   [ "${actual}" = "--debug=true" ]
 }
 
+# Extra args
+@test "csi/daemonset: extra args can be passed" {
+  cd `chart_dir`
+  local actual=$(helm template \
+      --show-only templates/csi-daemonset.yaml \
+      --set "csi.enabled=true" \
+      . | tee /dev/stderr |
+      yq -r '.spec.template.spec.containers[0].args | length' | tee /dev/stderr)
+  [ "${actual}" = "2" ]
+
+  local object=$(helm template \
+      --show-only templates/csi-daemonset.yaml \
+      --set "csi.enabled=true" \
+      --set "csi.extraArgs={--foo=bar,--bar baz,first}" \
+      . | tee /dev/stderr |
+      yq -r '.spec.template.spec.containers[0]')
+  local actual=$(echo $object |
+      yq -r '.args | length' | tee /dev/stderr)
+  [ "${actual}" = "5" ]
+  local actual=$(echo $object |
+      yq -r '.args[2]' | tee /dev/stderr)
+  [ "${actual}" = "--foo=bar" ]
+  local actual=$(echo $object |
+      yq -r '.args[3]' | tee /dev/stderr)
+  [ "${actual}" = "--bar baz" ]
+  local actual=$(echo $object |
+      yq -r '.args[4]' | tee /dev/stderr)
+  [ "${actual}" = "first" ]
+}
+
 # updateStrategy
 @test "csi/daemonset: updateStrategy is configurable" {
   cd `chart_dir`

values.schema.json

@@ -30,6 +30,9 @@
                 "enabled": {
                     "type": "boolean"
                 },
+                "extraArgs": {
+                    "type": "array"
+                },
                 "image": {
                     "type": "object",
                     "properties": {

values.yaml

@@ -773,3 +773,6 @@ csi:
 
   # Enables debug logging.
   debug: false
+
+  # Pass arbitrary additional arguments to vault-csi-provider.
+  extraArgs: []