make "selector" to be map of strings internally, so config file will …

…accept a map rather than a string

cmd/cmd.go

@@ -54,7 +54,7 @@ func init() {
 
 	rootCmd.Flags().StringP("kubeconfig", "k", "", "path to kubeconfig (default is \"~/.kube/config\")")
 	rootCmd.Flags().StringP("namespace", "n", "", "used with -p. kubernetes namespace indicator (default is \"\" or what is provided in kubeconfig. usually \"default\")")
-	rootCmd.Flags().StringP("selector", "l", "", "kubernetes label selectors (default is \"\" a.k.a everything)")
+	rootCmd.Flags().StringToStringP("selector", "l", nil, "kubernetes label selectors (default is \"\" a.k.a everything)")
 	rootCmd.Flags().StringP("template", "t", "", "input template file. Required")
 	rootCmd.Flags().StringP("output", "o", "", "output file path (default stdout)")
 	rootCmd.Flags().DurationP("interval", "i", defaultDuration, "used with -d. interval between polls (default 15s)")

examples/README.md

@@ -6,13 +6,18 @@
 interval: 30s
 permissions: 0640
 
+template: examples/example.tpl
+
+selector:
+  app: coolweb
+  environment: production
+
 log:
   file: ktempl.log
 
 values:
   title: Example
   port: 32835
-
 ```
 
 ## Couple template examples

examples/config.yaml

@@ -1,6 +1,12 @@
 interval: 30s
 permissions: 0640
 
+template: examples/example.tpl
+
+selector:
+  app: coolweb
+  environment: production
+
 log:
   file: ktempl.log
 

pkg/config/config.go

@@ -11,18 +11,18 @@ import (
 
 type Config struct {
 	Kubeconfig  string
-	Timeout     string
-	Retries     int
-	Selector    string
 	Namespace   string
+	Selector    map[string]string
+	Pods        bool
 	Template    string
 	Output      string
 	Permissions uint32
 	Interval    time.Duration
 	Exec        string
 	Values      map[string]interface{}
 	Daemon      bool
-	Pods        bool
+	Timeout     string
+	Retries     int
 	Log         logging.LoggingConfig
 }
 

pkg/render/helpers.go

@@ -1,6 +1,7 @@
 package render
 
 import (
+	"fmt"
 	"os"
 	"strings"
 
@@ -30,3 +31,18 @@ func StringSliceToStringMap(s []string) map[string]string {
 	return result
 
 }
+
+func StringifyStringsMap(m map[string]string) string {
+
+	if m == nil {
+		return ""
+	}
+
+	var s []string
+	for k, v := range m {
+		s = append(s, fmt.Sprintf("%s=%s", k, v))
+	}
+
+	return strings.Join(s, ",")
+
+}

pkg/worker/worker.go

@@ -16,7 +16,7 @@ func Worker() {
 
 	kubeconfig := viper.GetString("kubeconfig")
 	namespace := viper.GetString("namespace")
-	selector := viper.GetString("selector")
+	selector := render.StringifyStringsMap(viper.GetStringMapString("selector"))
 	output := viper.GetString("output")
 	usePods := viper.GetBool("pods")