add config

config/source/consul/util.go

@@ -0,0 +1,49 @@
+package consul
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/consul/api"
+	"github.com/micro/go-micro/config/encoder"
+)
+
+func makeMap(e encoder.Encoder, kv api.KVPairs, stripPrefix string) (map[string]interface{}, error) {
+	data := make(map[string]interface{})
+
+	// consul guarantees lexicographic order, so no need to sort
+	for _, v := range kv {
+		pathString := strings.TrimPrefix(strings.TrimPrefix(v.Key, stripPrefix), "/")
+		var val map[string]interface{}
+
+		// ensure a valid value is stored at this location
+		if len(v.Value) > 0 {
+			if err := e.Decode(v.Value, &val); err != nil {
+				return nil, fmt.Errorf("faild decode value. path: %s, error: %s", pathString, err)
+			}
+		}
+
+		// set target at the root
+		target := data
+
+		// then descend to the target location, creating as we go, if need be
+		if pathString != "" {
+			path := strings.Split(pathString, "/")
+			// find (or create) the location we want to put this value at
+			for _, dir := range path {
+				if _, ok := target[dir]; !ok {
+					target[dir] = make(map[string]interface{})
+				}
+				target = target[dir].(map[string]interface{})
+			}
+
+		}
+
+		// copy over the keys from the value
+		for k := range val {
+			target[k] = val[k]
+		}
+	}
+
+	return data, nil
+}