fix(config): Fix extrafields / attribute on logger / tracing

log/config.go

@@ -114,9 +114,13 @@ func (c *ConfigStruct) applyEnv() error {
 
 	// Extra Fields
 	if v := os.Getenv(fmt.Sprintf("%s%s", envPrefix, "EXTRA_FIELDS")); v != "" {
+		if c.ExtrasFields == nil {
+			c.ExtrasFields = make(map[string]interface{})
+		}
+
 		extraFieldsPart := strings.Split(v, ",")
 		for _, efp := range extraFieldsPart {
-			extraFieldKV := strings.SplitN(efp, ":", 1)
+			extraFieldKV := strings.SplitN(efp, ":", 2)
 			if len(extraFieldKV) != 2 {
 				return errors.NotValidf(fmt.Sprintf("Invalid extra_field %s in environment variable. Should be a key1:value1,key2:value2 format", efp))
 			}