feat: add copy function. (#25)

* optimization: slice sub.

* fix: rpc logger add more detail info.

* feat: add msg gateway error.

* refactor: separate functions with error containing message and error with only stack trace.

* feat: add stdout and stderr info.

* feat: add strings and sql log.

* feat: add copy function.

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/go-zookeeper/zk v1.0.3
 	github.com/golang-jwt/jwt/v4 v4.5.0
+	github.com/jinzhu/copier v0.4.0
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible
 	github.com/minio/minio-go/v7 v7.0.63
 	github.com/pkg/errors v0.9.1

utils/utils.go

@@ -15,6 +15,7 @@
 package utils
 
 import (
+	"github.com/jinzhu/copier"
 	"math/rand"
 	"reflect"
 	"sort"
@@ -638,3 +639,8 @@ func GetMsgID(sendID string) string {
 func int64ToString(i int64) string {
 	return strconv.FormatInt(i, 10)
 }
+
+// copy a by b  b->a
+func CopyStructFields(a interface{}, b interface{}, fields ...string) (err error) {
+	return copier.Copy(a, b)
+}