forked from pingcap/tidb-tools
/
main.go
124 lines (102 loc) · 2.64 KB
/
main.go
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// Copyright 2017 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"context"
"encoding/json"
"flag"
"fmt"
"os"
"github.com/pingcap/kvproto/pkg/metapb"
pd "github.com/pingcap/pd/client"
"github.com/pingcap/tidb-tools/pkg/utils"
"github.com/pingcap/tidb/tablecodec"
"github.com/pingcap/tidb/util/codec"
)
var (
pdAddr = flag.String("pd", "http://127.0.0.1:2379", "PD address")
tableID = flag.Int64("table", 0, "table ID")
indexID = flag.Int64("index", 0, "index ID")
limit = flag.Int("limit", 10000, "limit")
printVersion = flag.Bool("V", false, "prints version and exit")
)
func exitWithErr(err error) {
if err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
}
type regionInfo struct {
Region *metapb.Region
Leader *metapb.Peer
}
type keyRange struct {
startKey []byte
endKey []byte
}
func main() {
flag.Parse()
if *printVersion {
fmt.Printf(utils.GetRawInfo("dump_region"))
return
}
if *tableID == 0 {
exitWithErr(fmt.Errorf("need table ID"))
}
// TODO: support tsl
client, err := pd.NewClient([]string{*pdAddr}, pd.SecurityOption{
CAPath: "",
CertPath: "",
KeyPath: "",
})
exitWithErr(err)
defer client.Close()
var (
startKey []byte
endKey []byte
)
if *indexID == 0 {
// dump table region
startKey = tablecodec.GenTableRecordPrefix(*tableID)
endKey = tablecodec.GenTableRecordPrefix(*tableID + 1)
} else {
// dump table index region
startKey = tablecodec.EncodeTableIndexPrefix(*tableID, *indexID)
endKey = tablecodec.EncodeTableIndexPrefix(*tableID, *indexID+1)
}
startKey = codec.EncodeBytes([]byte(nil), startKey)
endKey = codec.EncodeBytes([]byte(nil), endKey)
rangeInfo, err := json.Marshal(&keyRange{
startKey: startKey,
endKey: endKey,
})
exitWithErr(err)
fmt.Println(string(rangeInfo))
ctx := context.Background()
for i := 0; i < *limit; i++ {
region, leader, err := client.GetRegion(ctx, startKey)
exitWithErr(err)
if bytes.Compare(region.GetStartKey(), endKey) >= 0 {
break
}
startKey = region.GetEndKey()
r := ®ionInfo{
Region: region,
Leader: leader,
}
infos, err := json.MarshalIndent(r, "", " ")
exitWithErr(err)
fmt.Println(string(infos))
}
}