From 2fffe3c0fcaef4449666a3b76d3240d1c5c559a8 Mon Sep 17 00:00:00 2001
From: fengxsong <fengxsong@outlook.com>
Date: Wed, 11 Oct 2023 03:11:52 +0000
Subject: [PATCH] refactor: remove SEALOS_SCP_CHECKSUM env key

Signed-off-by: fengxsong <fengxsong@outlook.com>
---
 .../applydrivers/apply_drivers_default.go     |  2 +-
 pkg/ssh/scp.go                                | 49 +------------------
 pkg/system/env.go                             | 10 +---
 3 files changed, 4 insertions(+), 57 deletions(-)

diff --git a/pkg/apply/applydrivers/apply_drivers_default.go b/pkg/apply/applydrivers/apply_drivers_default.go
index 9aa9d8667f1..e620a419975 100644
--- a/pkg/apply/applydrivers/apply_drivers_default.go
+++ b/pkg/apply/applydrivers/apply_drivers_default.go
@@ -275,7 +275,7 @@ func (c *Applier) deleteCluster() error {
 }
 
 func (c *Applier) syncWorkdir() {
-	if v, _ := system.Get(system.SYNC_WORKDIR_ENV_KEY); v != "" {
+	if v, _ := system.Get(system.SyncWorkDirEnvKey); v != "" {
 		vb, _ := strconv.ParseBool(v)
 		if !vb {
 			return
diff --git a/pkg/ssh/scp.go b/pkg/ssh/scp.go
index bbbf90e5ea2..4c6af22e4c5 100644
--- a/pkg/ssh/scp.go
+++ b/pkg/ssh/scp.go
@@ -20,18 +20,14 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"strconv"
 	"strings"
 	"time"
 
-	"github.com/labring/sealos/pkg/system"
-
 	"github.com/pkg/sftp"
 	"github.com/schollz/progressbar/v3"
 	"golang.org/x/crypto/ssh"
 
 	"github.com/labring/sealos/pkg/utils/file"
-	"github.com/labring/sealos/pkg/utils/hash"
 	"github.com/labring/sealos/pkg/utils/logger"
 	"github.com/labring/sealos/pkg/utils/progress"
 )
@@ -198,20 +194,6 @@ func (c *Client) doCopy(client *sftp.Client, host, src, dest string, epu *progre
 			}
 		}
 	} else {
-		fn := func(host string, name string) bool {
-			exists, err := checkIfRemoteFileExists(client, name)
-			if err != nil {
-				logger.Error("failed to detect remote file exists: %v", err)
-			}
-			return exists
-		}
-		if isCheckFileMD5() && fn(host, dest) {
-			rfp, _ := client.Stat(dest)
-			if lfp.Size() == rfp.Size() && hash.FileDigest(src) == c.RemoteSha256Sum(host, dest) {
-				logger.Debug("remote dst %s already exists and is the latest version, skip copying process", dest)
-				return nil
-			}
-		}
 		lf, err := os.Open(filepath.Clean(src))
 		if err != nil {
 			return fmt.Errorf("failed to open: %v", err)
@@ -240,37 +222,8 @@ func (c *Client) doCopy(client *sftp.Client, host, src, dest string, epu *progre
 		if err = client.PosixRename(destTmp, dest); err != nil {
 			return fmt.Errorf("failed to rename %s to %s: %v", destTmp, dest, err)
 		}
-		if isCheckFileMD5() {
-			dh := c.RemoteSha256Sum(host, dest)
-			if dh == "" {
-				// when ssh connection failed, remote sha256 is default to "", so ignore it.
-				return nil
-			}
-			sh := hash.FileDigest(src)
-			if sh != dh {
-				return fmt.Errorf("sha256 sum not match %s(%s) != %s(%s), maybe network corruption?", src, sh, dest, dh)
-			}
-		}
+
 		_ = epu.Add(1)
 	}
 	return nil
 }
-
-func checkIfRemoteFileExists(client *sftp.Client, fp string) (bool, error) {
-	_, err := client.Stat(fp)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return false, nil
-		}
-		return false, err
-	}
-	return true, nil
-}
-
-func isCheckFileMD5() bool {
-	if v, err := system.Get(system.ScpChecksumConfigKey); err == nil {
-		boolVal, _ := strconv.ParseBool(v)
-		return boolVal
-	}
-	return true
-}
diff --git a/pkg/system/env.go b/pkg/system/env.go
index bfd8520ecb5..975c3bee150 100644
--- a/pkg/system/env.go
+++ b/pkg/system/env.go
@@ -82,18 +82,13 @@ var configOptions = []ConfigOption{
 		Description: `the log level to be used in buildah modules, either "trace", "debug", "info", "warn", "error", "fatal", or "panic".`,
 		OSEnv:       BuildahLogLevelConfigKey,
 	},
-	{
-		Key:          ScpChecksumConfigKey,
-		Description:  "whether to check the md5sum value is consistent during the copy process.",
-		DefaultValue: "false",
-	},
 	{
 		Key:         ContainerStorageConfEnvKey,
 		Description: "path of container storage config file, setting this env will override the default location",
 		OSEnv:       ContainerStorageConfEnvKey,
 	},
 	{
-		Key:          SYNC_WORKDIR_ENV_KEY,
+		Key:          SyncWorkDirEnvKey,
 		Description:  "whether to sync runtime root dir to all master nodes for backup purpose",
 		DefaultValue: "true",
 	},
@@ -106,8 +101,7 @@ const (
 	BuildahFormatConfigKey     = "BUILDAH_FORMAT"
 	BuildahLogLevelConfigKey   = "BUILDAH_LOG_LEVEL"
 	ContainerStorageConfEnvKey = "CONTAINERS_STORAGE_CONF"
-	ScpChecksumConfigKey       = "SCP_CHECKSUM"
-	SYNC_WORKDIR_ENV_KEY       = "SYNC_WORKDIR"
+	SyncWorkDirEnvKey          = "SYNC_WORKDIR"
 )
 
 func (*envSystemConfig) getValueOrDefault(key string) (*ConfigOption, error) {