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restore.go
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restore.go
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// Copyright 2020 PingCAP, Inc. Licensed under Apache-2.0.
package main
import (
"github.com/pingcap/errors"
"github.com/pingcap/log"
"github.com/pingcap/tidb/br/pkg/gluetikv"
"github.com/pingcap/tidb/br/pkg/summary"
"github.com/pingcap/tidb/br/pkg/task"
"github.com/pingcap/tidb/br/pkg/trace"
"github.com/pingcap/tidb/br/pkg/utils"
"github.com/pingcap/tidb/br/pkg/version/build"
"github.com/pingcap/tidb/session"
"github.com/spf13/cobra"
"go.uber.org/zap"
"sourcegraph.com/sourcegraph/appdash"
)
func runRestoreCommand(command *cobra.Command, cmdName string) error {
cfg := task.RestoreConfig{Config: task.Config{LogProgress: HasLogFile()}}
if err := cfg.ParseFromFlags(command.Flags()); err != nil {
command.SilenceUsage = false
return errors.Trace(err)
}
if task.IsStreamRestore(cmdName) {
if err := cfg.ParseStreamRestoreFlags(command.Flags()); err != nil {
return errors.Trace(err)
}
}
ctx := GetDefaultContext()
if cfg.EnableOpenTracing {
var store *appdash.MemoryStore
ctx, store = trace.TracerStartSpan(ctx)
defer trace.TracerFinishSpan(ctx, store)
}
if err := task.RunRestore(GetDefaultContext(), tidbGlue, cmdName, &cfg); err != nil {
log.Error("failed to restore", zap.Error(err))
return errors.Trace(err)
}
return nil
}
func runRestoreRawCommand(command *cobra.Command, cmdName string) error {
cfg := task.RestoreRawConfig{
RawKvConfig: task.RawKvConfig{Config: task.Config{LogProgress: HasLogFile()}},
}
if err := cfg.ParseFromFlags(command.Flags()); err != nil {
command.SilenceUsage = false
return errors.Trace(err)
}
ctx := GetDefaultContext()
if cfg.EnableOpenTracing {
var store *appdash.MemoryStore
ctx, store = trace.TracerStartSpan(ctx)
defer trace.TracerFinishSpan(ctx, store)
}
if err := task.RunRestoreRaw(GetDefaultContext(), gluetikv.Glue{}, cmdName, &cfg); err != nil {
log.Error("failed to restore raw kv", zap.Error(err))
return errors.Trace(err)
}
return nil
}
// NewRestoreCommand returns a restore subcommand.
func NewRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "restore",
Short: "restore a TiDB/TiKV cluster",
SilenceUsage: true,
PersistentPreRunE: func(c *cobra.Command, args []string) error {
if err := Init(c); err != nil {
return errors.Trace(err)
}
build.LogInfo(build.BR)
utils.LogEnvVariables()
task.LogArguments(c)
session.DisableStats4Test()
summary.SetUnit(summary.RestoreUnit)
return nil
},
}
command.AddCommand(
newFullRestoreCommand(),
newDBRestoreCommand(),
newTableRestoreCommand(),
newRawRestoreCommand(),
newStreamRestoreCommand(),
)
task.DefineRestoreFlags(command.PersistentFlags())
return command
}
func newFullRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "full",
Short: "restore all tables",
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, _ []string) error {
return runRestoreCommand(cmd, task.FullRestoreCmd)
},
}
task.DefineFilterFlags(command, filterOutSysAndMemTables, false)
return command
}
func newDBRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "db",
Short: "restore tables in a database from the backup data",
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, _ []string) error {
return runRestoreCommand(cmd, task.DBRestoreCmd)
},
}
task.DefineDatabaseFlags(command)
return command
}
func newTableRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "table",
Short: "restore a table from the backup data",
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, _ []string) error {
return runRestoreCommand(cmd, task.TableRestoreCmd)
},
}
task.DefineTableFlags(command)
return command
}
func newRawRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "raw",
Short: "(experimental) restore a raw kv range to TiKV cluster",
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, _ []string) error {
return runRestoreRawCommand(cmd, task.RawRestoreCmd)
},
}
task.DefineRawRestoreFlags(command)
return command
}
func newStreamRestoreCommand() *cobra.Command {
command := &cobra.Command{
Use: "point",
Short: "restore data from log until specify commit timestamp",
Args: cobra.NoArgs,
RunE: func(command *cobra.Command, _ []string) error {
return runRestoreCommand(command, task.PointRestoreCmd)
},
}
task.DefineFilterFlags(command, filterOutSysAndMemTables, true)
task.DefineStreamRestoreFlags(command)
command.Hidden = true
return command
}