executor/brie: use the default value from flags (#48025)

br/pkg/task/BUILD.bazel

@@ -98,7 +98,7 @@ go_test(
     ],
     embed = [":task"],
     flaky = True,
-    shard_count = 18,
+    shard_count = 21,
     deps = [
         "//br/pkg/conn",
         "//br/pkg/errors",
@@ -111,6 +111,7 @@ go_test(
         "//parser/model",
         "//statistics/handle",
         "//tablecodec",
+        "//util/table-filter",
         "@com_github_golang_protobuf//proto",
         "@com_github_pingcap_errors//:errors",
         "@com_github_pingcap_kvproto//pkg/brpb",

br/pkg/task/backup.go

@@ -38,6 +38,7 @@ import (
 	"github.com/pingcap/tidb/util/mathutil"
 	"github.com/spf13/pflag"
 	"github.com/tikv/client-go/v2/oracle"
+	"go.uber.org/multierr"
 	"go.uber.org/zap"
 )
 
@@ -773,6 +774,21 @@ func ParseTSString(ts string, tzCheck bool) (uint64, error) {
 	return oracle.GoTimeToTS(t1), nil
 }
 
+func DefaultBackupConfig() BackupConfig {
+	fs := pflag.NewFlagSet("dummy", pflag.ContinueOnError)
+	DefineCommonFlags(fs)
+	DefineBackupFlags(fs)
+	cfg := BackupConfig{}
+	err := multierr.Combine(
+		cfg.ParseFromFlags(fs),
+		cfg.Config.ParseFromFlags(fs),
+	)
+	if err != nil {
+		log.Panic("infallible operation failed.", zap.Error(err))
+	}
+	return cfg
+}
+
 func parseCompressionType(s string) (backuppb.CompressionType, error) {
 	var ct backuppb.CompressionType
 	switch s {

br/pkg/task/common.go

@@ -330,6 +330,16 @@ func HiddenFlagsForStream(flags *pflag.FlagSet) {
 	storage.HiddenFlagsForStream(flags)
 }
 
+func DefaultConfig() Config {
+	fs := pflag.NewFlagSet("dummy", pflag.ContinueOnError)
+	DefineCommonFlags(fs)
+	cfg := Config{}
+	if err := cfg.ParseFromFlags(fs); err != nil {
+		log.Panic("infallible operation failed.", zap.Error(err))
+	}
+	return cfg
+}
+
 // DefineDatabaseFlags defines the required --db flag for `db` subcommand.
 func DefineDatabaseFlags(command *cobra.Command) {
 	command.Flags().String(flagDatabase, "", "database name")

br/pkg/task/common_test.go

@@ -9,7 +9,10 @@ import (
 
 	backup "github.com/pingcap/kvproto/pkg/brpb"
 	"github.com/pingcap/kvproto/pkg/encryptionpb"
+	"github.com/pingcap/tidb/br/pkg/storage"
+	"github.com/pingcap/tidb/br/pkg/utils"
 	"github.com/pingcap/tidb/config"
+	filter "github.com/pingcap/tidb/util/table-filter"
 	"github.com/spf13/pflag"
 	"github.com/stretchr/testify/require"
 )
@@ -157,3 +160,80 @@ func TestCheckCipherKey(t *testing.T) {
 		}
 	}
 }
+
+func must[T any](t T, err error) T {
+	if err != nil {
+		panic(err)
+	}
+	return t
+}
+
+func expectedDefaultConfig() Config {
+	return Config{
+		BackendOptions:            storage.BackendOptions{S3: storage.S3BackendOptions{ForcePathStyle: true}},
+		PD:                        []string{"127.0.0.1:2379"},
+		ChecksumConcurrency:       4,
+		Checksum:                  true,
+		SendCreds:                 true,
+		CheckRequirements:         true,
+		FilterStr:                 []string(nil),
+		TableFilter:               filter.CaseInsensitive(must(filter.Parse([]string{"*.*"}))),
+		Schemas:                   map[string]struct{}{},
+		Tables:                    map[string]struct{}{},
+		SwitchModeInterval:        300000000000,
+		GRPCKeepaliveTime:         10000000000,
+		GRPCKeepaliveTimeout:      3000000000,
+		CipherInfo:                backup.CipherInfo{CipherType: 1},
+		MetadataDownloadBatchSize: 0x80,
+	}
+}
+
+func expectedDefaultBackupConfig() BackupConfig {
+	return BackupConfig{
+		Config: expectedDefaultConfig(),
+		GCTTL:  utils.DefaultBRGCSafePointTTL,
+		CompressionConfig: CompressionConfig{
+			CompressionType: backup.CompressionType_ZSTD,
+		},
+		IgnoreStats:     true,
+		UseBackupMetaV2: true,
+		UseCheckpoint:   true,
+	}
+}
+
+func expectedDefaultRestoreConfig() RestoreConfig {
+	defaultConfig := expectedDefaultConfig()
+	defaultConfig.Concurrency = defaultRestoreConcurrency
+	return RestoreConfig{
+		Config: defaultConfig,
+		RestoreCommonConfig: RestoreCommonConfig{Online: false,
+			MergeSmallRegionSizeBytes: 0x6000000,
+			MergeSmallRegionKeyCount:  0xea600,
+			WithSysTable:              false,
+			ResetSysUsers:             []string{"cloud_admin", "root"}},
+		NoSchema:            false,
+		PDConcurrency:       0x1,
+		BatchFlushInterval:  16000000000,
+		DdlBatchSize:        0x80,
+		WithPlacementPolicy: "STRICT",
+		UseCheckpoint:       true,
+	}
+}
+
+func TestDefault(t *testing.T) {
+	def := DefaultConfig()
+	defaultConfig := expectedDefaultConfig()
+	require.Equal(t, defaultConfig, def)
+}
+
+func TestDefaultBackup(t *testing.T) {
+	def := DefaultBackupConfig()
+	defaultConfig := expectedDefaultBackupConfig()
+	require.Equal(t, defaultConfig, def)
+}
+
+func TestDefaultRestore(t *testing.T) {
+	def := DefaultRestoreConfig()
+	defaultConfig := expectedDefaultRestoreConfig()
+	require.Equal(t, defaultConfig, def)
+}

br/pkg/task/restore.go

@@ -562,6 +562,23 @@ func removeCheckpointDataForLogRestore(ctx context.Context, storageName string,
 	return errors.Trace(checkpoint.RemoveCheckpointDataForLogRestore(ctx, s, taskName, clusterID))
 }
 
+func DefaultRestoreConfig() RestoreConfig {
+	fs := pflag.NewFlagSet("dummy", pflag.ContinueOnError)
+	DefineCommonFlags(fs)
+	DefineRestoreFlags(fs)
+	cfg := RestoreConfig{}
+	err := multierr.Combine(
+		cfg.ParseFromFlags(fs),
+		cfg.RestoreCommonConfig.ParseFromFlags(fs),
+		cfg.Config.ParseFromFlags(fs),
+	)
+	if err != nil {
+		log.Panic("infallible failed.", zap.Error(err))
+	}
+
+	return cfg
+}
+
 // RunRestore starts a restore task inside the current goroutine.
 func RunRestore(c context.Context, g glue.Glue, cmdName string, cfg *RestoreConfig) error {
 	etcdCLI, err := dialEtcdWithCfg(c, cfg.Config)

executor/brie.go

@@ -228,21 +228,15 @@ func (b *executorBuilder) buildBRIE(s *ast.BRIEStmt, schema *expression.Schema)
 	}
 
 	tidbCfg := config.GetGlobalConfig()
-	cfg := task.Config{
-		TLS: task.TLSConfig{
-			CA:   tidbCfg.Security.ClusterSSLCA,
-			Cert: tidbCfg.Security.ClusterSSLCert,
-			Key:  tidbCfg.Security.ClusterSSLKey,
-		},
-		PD:          strings.Split(tidbCfg.Path, ","),
-		Concurrency: 4,
-		Checksum:    true,
-		SendCreds:   true,
-		LogProgress: true,
-		CipherInfo: backuppb.CipherInfo{
-			CipherType: encryptionpb.EncryptionMethod_PLAINTEXT,
-		},
+	tlsCfg := task.TLSConfig{
+		CA:   tidbCfg.Security.ClusterSSLCA,
+		Cert: tidbCfg.Security.ClusterSSLCert,
+		Key:  tidbCfg.Security.ClusterSSLKey,
 	}
+	pds := strings.Split(tidbCfg.Path, ",")
+	cfg := task.DefaultConfig()
+	cfg.PD = pds
+	cfg.TLS = tlsCfg
 
 	storageURL, err := storage.ParseRawURL(s.Storage)
 	if err != nil {
@@ -310,7 +304,9 @@ func (b *executorBuilder) buildBRIE(s *ast.BRIEStmt, schema *expression.Schema)
 
 	switch s.Kind {
 	case ast.BRIEKindBackup:
-		e.backupCfg = &task.BackupConfig{Config: cfg}
+		bcfg := task.DefaultBackupConfig()
+		bcfg.Config = cfg
+		e.backupCfg = &bcfg
 
 		for _, opt := range s.Options {
 			switch opt.Tp {
@@ -338,7 +334,9 @@ func (b *executorBuilder) buildBRIE(s *ast.BRIEStmt, schema *expression.Schema)
 		}
 
 	case ast.BRIEKindRestore:
-		e.restoreCfg = &task.RestoreConfig{Config: cfg}
+		rcfg := task.DefaultRestoreConfig()
+		rcfg.Config = cfg
+		e.restoreCfg = &rcfg
 		for _, opt := range s.Options {
 			switch opt.Tp {
 			case ast.BRIEOptionOnline: