add index template {ls,sh} (#33)

pkg/es/cluster_util.go

@@ -21,6 +21,7 @@ import (
 	"errors"
 	"fmt"
 	"regexp"
+	"strconv"
 	"strings"
 	"sync"
 
@@ -397,3 +398,44 @@ func getClusterData(es *elasticsearch.TypedClient, wg *sync.WaitGroup, reschan c
 
 	reschan <- ar
 }
+
+// recursively traverse  the raw  settings hash and  build a  flat map
+// consisting of the translated path and its value.
+//
+// e.g.
+// logger:
+//
+//	org:
+//	  elasticsearch:
+//	    transport:
+//	      OutboundHandler: "ERROR"
+//
+// gets:
+//
+// logger.org.elasticsearch.transport.OutboundHandler: "ERROR"
+func getJsonPath(paths map[string]string, raw map[string]any, topic string) map[string]string {
+	for name, data := range raw {
+		path := topic + "." + name
+
+		switch value := data.(type) {
+		case string:
+			paths[path] = value
+		case *string:
+			paths[path] = *value
+		case int:
+			paths[path] = strconv.Itoa(value)
+		case *int:
+			paths[path] = strconv.Itoa(*value)
+		case map[string]any:
+			paths = getJsonPath(paths, value, path)
+		case []any:
+			val := []string{}
+			for _, item := range value {
+				val = append(val, fmt.Sprintf("%v", item))
+			}
+			paths[path] = strings.Join(val, ",")
+		}
+	}
+
+	return paths
+}