hey

plugin/someteam.example.com/v1/ChartInflatorExec

@@ -9,18 +9,22 @@ set -e
 #  kind: ChartInflatorExec
 #  metadata:
 #    name: notImportantHere
-#  chart: chartName
-#  values: /absolute/path/to/values/file
-#  helmBin: /absolute/path/to/helmBin
+#  chartName: nameOfStableChart
+#  values: /abs/path/to/local/values/file
+#  chartHome: /abs/path/local/chart/storage
+#  helmHome: /abs/path/to/helm/config
+#  helmBin: /abs/path/to/helmBin
 #
 # fetches the given chart from stable/$chartName,
 # and inflates it to stdout, using the given values file.
 #
+# chartDir default: $TMP_DIR/charts
+# chartDir default:
+
 # Example execution:
 # ./plugins/kustomize.config.k8s.io/v1/ChartInflatorExec configFile.yaml
 
 
-
 # Yaml parsing is a ridiculous thing to do in bash,
 # but let's try:
 function parseYaml {
@@ -30,48 +34,57 @@ function parseYaml {
     local k=${line%:*}
     local v=${line#*:}
 
-    [ "$k" == "chart" ] && chartName=$v
+    [ "$k" == "chartName" ] && chartName=$v
+    [ "$k" == "chartHome" ] && chartHome=$v
     [ "$k" == "values" ] && valuesFile=$v
+    [ "$k" == "helmHome" ] && helmHome=$v
     [ "$k" == "helmBin" ] && helmBin=$v
   done <"$file"
 
   # Trim leading space
   chartName="${chartName#"${chartName%%[![:space:]]*}"}"
+  chartHome="${chartHome#"${chartHome%%[![:space:]]*}"}"
   valuesFile="${valuesFile#"${valuesFile%%[![:space:]]*}"}"
   helmBin="${helmBin#"${helmBin%%[![:space:]]*}"}"
 }
 
 TMP_DIR=$(mktemp -d)
 
-# Where all the files generated by 'helm init' live.
-HELM_HOME=$TMP_DIR/dotHelm
-
-# Where helm charts are unpacked.
-CHART_HOME=$TMP_DIR/charts
-
 parseYaml $1
 
+# Where all the files generated by 'helm init' live.
+if [ -z "$helmHome" ]; then
+  helmHome=$TMP_DIR/dotHelm
+fi
+
+# Where helm charts are unpacked.
+if [ -z "$chartHome" ]; then
+  chartHome=$TMP_DIR/charts
+fi
+
 if [ -z "$helmBin" ]; then
-  helmBin=/usr/local/bin/helm
+  helmBin=helm
 fi
 
 if [ -z "$valuesFile" ]; then
-  valuesFile=$CHART_HOME/$chartName/values.yaml
+  valuesFile=$chartHome/$chartName/values.yaml
 fi
 
 function doHelm {
-  $helmBin --home $HELM_HOME $@
+  $helmBin --home $helmHome $@
 }
 
 # The init command is extremely chatty
 doHelm init --client-only >& /dev/null
 
-doHelm fetch --untar \
-    --untardir $CHART_HOME \
-    stable/$chartName
+if [ ! -d "$chartHome/$chartName" ]; then
+  doHelm fetch --untar \
+      --untardir $chartHome \
+      stable/$chartName
+fi
 
 doHelm template \
     --values $valuesFile \
-    $CHART_HOME/$chartName
+    $chartHome/$chartName
 
 /bin/rm -rf $TMP_DIR