Initial commit.

registry/common.go

@@ -0,0 +1,44 @@
+package registry
+
+import (
+	"fmt"
+	"reflect"
+	"sort"
+
+	"github.com/hhkbp2/go-logging"
+)
+
+// setupLogging configure logging.
+func setupLogging(name string) logging.Logger {
+	logger := logging.GetLogger(name)
+	handler := logging.NewStdoutHandler()
+	format := "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+	dateFormat := "%Y-%m-%d %H:%M:%S"
+	formatter := logging.NewStandardFormatter(format, dateFormat)
+	handler.SetFormatter(formatter)
+	logger.SetLevel(logging.LevelInfo)
+	logger.AddHandler(handler)
+	return logger
+}
+
+// SortedMapKeys sort keys of the map where values can be of any type.
+func SortedMapKeys(m interface{}) []string {
+	v := reflect.ValueOf(m)
+	keys := make([]string, 0, len(v.MapKeys()))
+	for _, key := range v.MapKeys() {
+		keys = append(keys, key.String())
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+// PrettySize format bytes in more readable units.
+func PrettySize(size float64) string {
+	units := []string{"B", "KB", "MB", "GB"}
+	i := 0
+	for size > 1024 && i < len(units) {
+		size = size / 1024
+		i = i + 1
+	}
+	return fmt.Sprintf("%.*f %s", 0, size, units[i])
+}