Add reuse-values option (#95)

README.md

@@ -74,6 +74,7 @@ on the cluster.
 * `recreate_pods`: *Optional.* This flag will cause all pods to be recreated when upgrading. (Default: false)
 * `show_diff`: *Optional.* Show the diff that is applied if upgrading an existing successful release. Will not be used when `devel` is set. (Default: false)
 * `exit_after_diff`: *Optional.* Show the diff but don't actually install/upgrade. (Default: false)
+* `reuse_values`: *Optional.* When upgrading, reuse the last release's values. (Default: false)
 
 ## Example
 

assets/out

@@ -38,6 +38,7 @@ show_diff=$(jq -r '.params.show_diff // "false"' < $payload)
 recreate_pods=$(jq -r '.params.recreate_pods // "false"' < $payload)
 tls_enabled=$(jq -r '.source.tls_enabled // "false"' < $payload)
 exit_after_diff=$(jq -r '.params.exit_after_diff // "false"' < $payload)
+reuse_values=$(jq -r '.params.reuse_values // "false"' < $payload)
 
 if [ -z "$chart" ]; then
   if [[ "$test" == "false" && "$delete" == "false" ]]; then
@@ -134,6 +135,11 @@ helm_upgrade() {
   if [ "$force" = true ]; then
     non_diff_args+=("--force")
   fi
+  if [ "$reuse_values" = true ]; then
+    upgrade_args+=("--reuse-values")
+    non_diff_args+=("--reuse-values")
+  fi
+
   logfile="/tmp/log"
   mkdir -p /tmp