140 lines
3.3 KiB
Go
140 lines
3.3 KiB
Go
// Copyright 2016 The etcd Authors
|
|
//
|
|
// 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,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"fmt"
|
|
"path/filepath"
|
|
|
|
"go.etcd.io/etcd/lease/leasepb"
|
|
"go.etcd.io/etcd/mvcc"
|
|
"go.etcd.io/etcd/mvcc/backend"
|
|
"go.etcd.io/etcd/mvcc/mvccpb"
|
|
|
|
bolt "github.com/coreos/bbolt"
|
|
)
|
|
|
|
func snapDir(dataDir string) string {
|
|
return filepath.Join(dataDir, "member", "snap")
|
|
}
|
|
|
|
func getBuckets(dbPath string) (buckets []string, err error) {
|
|
db, derr := bolt.Open(dbPath, 0600, &bolt.Options{})
|
|
if derr != nil {
|
|
return nil, derr
|
|
}
|
|
defer db.Close()
|
|
|
|
err = db.View(func(tx *bolt.Tx) error {
|
|
return tx.ForEach(func(b []byte, _ *bolt.Bucket) error {
|
|
buckets = append(buckets, string(b))
|
|
return nil
|
|
})
|
|
})
|
|
return buckets, err
|
|
}
|
|
|
|
// TODO: import directly from packages, rather than copy&paste
|
|
|
|
type decoder func(k, v []byte)
|
|
|
|
var decoders = map[string]decoder{
|
|
"key": keyDecoder,
|
|
"lease": leaseDecoder,
|
|
}
|
|
|
|
type revision struct {
|
|
main int64
|
|
sub int64
|
|
}
|
|
|
|
func bytesToRev(bytes []byte) revision {
|
|
return revision{
|
|
main: int64(binary.BigEndian.Uint64(bytes[0:8])),
|
|
sub: int64(binary.BigEndian.Uint64(bytes[9:])),
|
|
}
|
|
}
|
|
|
|
func keyDecoder(k, v []byte) {
|
|
rev := bytesToRev(k)
|
|
var kv mvccpb.KeyValue
|
|
if err := kv.Unmarshal(v); err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("rev=%+v, value=[key %q | val %q | created %d | mod %d | ver %d]\n", rev, string(kv.Key), string(kv.Value), kv.CreateRevision, kv.ModRevision, kv.Version)
|
|
}
|
|
|
|
func bytesToLeaseID(bytes []byte) int64 {
|
|
if len(bytes) != 8 {
|
|
panic(fmt.Errorf("lease ID must be 8-byte"))
|
|
}
|
|
return int64(binary.BigEndian.Uint64(bytes))
|
|
}
|
|
|
|
func leaseDecoder(k, v []byte) {
|
|
leaseID := bytesToLeaseID(k)
|
|
var lpb leasepb.Lease
|
|
if err := lpb.Unmarshal(v); err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("lease ID=%016x, TTL=%ds\n", leaseID, lpb.TTL)
|
|
}
|
|
|
|
func iterateBucket(dbPath, bucket string, limit uint64, decode bool) (err error) {
|
|
db, derr := bolt.Open(dbPath, 0600, &bolt.Options{})
|
|
if derr != nil {
|
|
return derr
|
|
}
|
|
defer db.Close()
|
|
|
|
err = db.View(func(tx *bolt.Tx) error {
|
|
b := tx.Bucket([]byte(bucket))
|
|
if b == nil {
|
|
return fmt.Errorf("got nil bucket for %s", bucket)
|
|
}
|
|
|
|
c := b.Cursor()
|
|
|
|
// iterate in reverse order (use First() and Next() for ascending order)
|
|
for k, v := c.Last(); k != nil; k, v = c.Prev() {
|
|
// TODO: remove sensitive information
|
|
// (https://go.etcd.io/etcd/issues/7620)
|
|
if dec, ok := decoders[bucket]; decode && ok {
|
|
dec(k, v)
|
|
} else {
|
|
fmt.Printf("key=%q, value=%q\n", k, v)
|
|
}
|
|
|
|
limit--
|
|
if limit == 0 {
|
|
break
|
|
}
|
|
}
|
|
|
|
return nil
|
|
})
|
|
return err
|
|
}
|
|
|
|
func getHash(dbPath string) (hash uint32, err error) {
|
|
b := backend.NewDefaultBackend(dbPath)
|
|
return b.Hash(mvcc.DefaultIgnores)
|
|
}
|
|
|
|
// TODO: revert by revision and find specified hash value
|
|
// currently, it's hard because lease is in separate bucket
|
|
// and does not modify revision
|