Merge branch 'errcode' of github.com:OpenIMSDK/Open-IM-Server into errcode

# Conflicts:
#	pkg/common/db/mysql_model/im_mysql_model/group_model_k.go

pkg/utils/getcd.go

@@ -0,0 +1,18 @@
+package utils
+
+import (
+	"Open_IM/pkg/common/config"
+	"github.com/OpenIMSDK/getcdv3"
+	"github.com/OpenIMSDK/open_utils/constant"
+	"google.golang.org/grpc"
+	"strings"
+)
+
+func GetConn(operationID, serviceName string) (*grpc.ClientConn, error) {
+	conn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","),
+		serviceName, operationID, config.Config.Etcd.UserName, config.Config.Etcd.Password)
+	if conn == nil {
+		return nil, constant.ErrGetRpcConn
+	}
+	return conn, nil
+}