add staticSecretRenderInterval to injector (#621)

* make staticSecretRenderInterval default to empty string

* update values schema to add staticSecretRenderInterval

* add test for default value

* adding changelog entry

Co-authored-by: Theron Voran <tvoran@users.noreply.github.com>

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## Unreleased
 
+Improvements:
+* Added templateConfig.staticSecretRenderInterval annotation for the injector [GH-621](https://github.com/hashicorp/vault-helm/pull/621)
+
 ## 0.17.1 (October 25th, 2021)
 
 Improvements:

templates/injector-deployment.yaml

@@ -109,6 +109,10 @@ spec:
               value: "{{ .Values.injector.agentDefaults.template }}"
             - name: AGENT_INJECT_TEMPLATE_CONFIG_EXIT_ON_RETRY_FAILURE
               value: "{{ .Values.injector.agentDefaults.templateConfig.exitOnRetryFailure }}"
+            {{- if .Values.injector.agentDefaults.templateConfig.staticSecretRenderInterval }}
+            - name: AGENT_INJECT_TEMPLATE_STATIC_SECRET_RENDER_INTERVAL
+              value: "{{ .Values.injector.agentDefaults.templateConfig.staticSecretRenderInterval }}"
+            {{- end }}
             {{- include "vault.extraEnvironmentVars" .Values.injector | nindent 12 }}
             - name: POD_NAME
               valueFrom:

test/unit/injector-deployment.bats

@@ -696,3 +696,28 @@ load _helpers
       yq -r 'map(select(.name=="AGENT_INJECT_TEMPLATE_CONFIG_EXIT_ON_RETRY_FAILURE")) | .[] .value' | tee /dev/stderr)
   [ "${value}" = "false" ]
 }
+
+@test "injector/deployment: agent default template_config.static_secret_render_interval" {
+  cd `chart_dir`
+  local object=$(helm template \
+      --show-only templates/injector-deployment.yaml  \
+      . | tee /dev/stderr |
+      yq -r '.spec.template.spec.containers[0].env' | tee /dev/stderr)
+
+  local value=$(echo $object |
+      yq -r 'map(select(.name=="AGENT_INJECT_TEMPLATE_STATIC_SECRET_RENDER_INTERVAL")) | .[] .value' | tee /dev/stderr)
+  [ "${value}" = "" ]
+}
+
+@test "injector/deployment: can set agent template_config.static_secret_render_interval" {
+  cd `chart_dir`
+  local object=$(helm template \
+      --show-only templates/injector-deployment.yaml  \
+      --set='injector.agentDefaults.templateConfig.staticSecretRenderInterval=1m' \
+      . | tee /dev/stderr |
+      yq -r '.spec.template.spec.containers[0].env' | tee /dev/stderr)
+
+  local value=$(echo $object |
+      yq -r 'map(select(.name=="AGENT_INJECT_TEMPLATE_STATIC_SECRET_RENDER_INTERVAL")) | .[] .value' | tee /dev/stderr)
+  [ "${value}" = "1m" ]
+}

values.schema.json

@@ -205,6 +205,9 @@
                             "properties": {
                                 "exitOnRetryFailure": {
                                     "type": "boolean"
+                                },
+                                "staticSecretRenderInterval": {
+                                    "type": "string"
                                 }
                             }
                         }

values.yaml

@@ -85,6 +85,7 @@ injector:
     # Default values within Agent's template_config stanza.
     templateConfig:
       exitOnRetryFailure: true
+      staticSecretRenderInterval: ""
 
   # Mount Path of the Vault Kubernetes Auth Method.
   authPath: "auth/kubernetes"