From f73b5595633d828823cdbe263e56f9c931c6c817 Mon Sep 17 00:00:00 2001
From: xlf <1396510465@qq.com>
Date: Mon, 23 Sep 2024 16:11:15 +0800
Subject: [PATCH 1/2] Optimize Map2Kvs functions by pre-allocating memory

---
 client/dtmgrpc/dtmgimp/utils.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/client/dtmgrpc/dtmgimp/utils.go b/client/dtmgrpc/dtmgimp/utils.go
index 2bb6ba5..a41aa40 100644
--- a/client/dtmgrpc/dtmgimp/utils.go
+++ b/client/dtmgrpc/dtmgimp/utils.go
@@ -7,14 +7,14 @@
 package dtmgimp
 
 import (
-	context "context"
+	"context"
 
 	"github.com/dtm-labs/dtm/client/dtmcli/dtmimp"
 	"github.com/dtm-labs/dtm/client/dtmgrpc/dtmgpb"
 	"github.com/dtm-labs/logger"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/protobuf/proto"
-	emptypb "google.golang.org/protobuf/types/known/emptypb"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 // MustProtoMarshal must version of proto.Marshal
@@ -77,7 +77,7 @@ func TransInfo2Ctx(ctx context.Context, gid, transType, branchID, op, dtm string
 
 // Map2Kvs map to metadata kv
 func Map2Kvs(m map[string]string) []string {
-	kvs := []string{}
+	kvs := make([]string, 0, len(m)<<1)
 	for k, v := range m {
 		kvs = append(kvs, k, v)
 	}

From d34bbd1ba487fad0f8b99ca0a54a8fea065f4597 Mon Sep 17 00:00:00 2001
From: xlf <1396510465@qq.com>
Date: Tue, 19 Nov 2024 15:05:56 +0800
Subject: [PATCH 2/2] update:use len(m) * 2 because it is more readable.

---
 client/dtmgrpc/dtmgimp/utils.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/client/dtmgrpc/dtmgimp/utils.go b/client/dtmgrpc/dtmgimp/utils.go
index a41aa40..ca7af52 100644
--- a/client/dtmgrpc/dtmgimp/utils.go
+++ b/client/dtmgrpc/dtmgimp/utils.go
@@ -77,7 +77,7 @@ func TransInfo2Ctx(ctx context.Context, gid, transType, branchID, op, dtm string
 
 // Map2Kvs map to metadata kv
 func Map2Kvs(m map[string]string) []string {
-	kvs := make([]string, 0, len(m)<<1)
+	kvs := make([]string, 0, len(m)*2)
 	for k, v := range m {
 		kvs = append(kvs, k, v)
 	}