featurebase/ctl/bolt_keys.go
2023-03-22 05:44:28 +00:00

93 lines
2.2 KiB
Go

// Copyright 2022 Molecula Corp. (DBA FeatureBase).
// SPDX-License-Identifier: Apache-2.0
package ctl
import (
"context"
"errors"
"fmt"
"io"
"os"
"time"
"github.com/featurebasedb/featurebase/v3/logger"
bolt "go.etcd.io/bbolt"
)
type BoltKeysCommand struct {
// Filepath to the bolt database.
Path string
Hexa bool
// Standard input/output
stdout io.Writer
logDest logger.Logger
}
// NewRBFCheckCommand returns a new instance of RBFCheckCommand.
func NewBoltKeysCommand(logdest logger.Logger) *BoltKeysCommand {
return &BoltKeysCommand{
stdout: os.Stdout,
logDest: logdest,
}
}
// The pilosa package makes these vars unexportable
// Copying and pasting these from translate_boltdb.go
// It may be useful to check on these constants in that file
// if something isn't working as expected
var (
// ErrTranslateStoreClosed is returned when reading from an TranslateEntryReader
// and the underlying store is closed.
ErrBoltTranslateStoreClosed = errors.New("boltdb: translate store closing")
// ErrTranslateKeyNotFound is returned when translating key
// and the underlying store returns an empty set
ErrTranslateKeyNotFound = errors.New("boltdb: translating key returned empty set")
bucketKeys = []byte("keys")
bucketIDs = []byte("ids")
bucketFree = []byte("free")
freeKey = []byte("free")
)
// Run executes a consistency check of an RBF database.
func (cmd *BoltKeysCommand) Run(ctx context.Context) error {
db, err := bolt.Open(cmd.Path, 0666, &bolt.Options{Timeout: 1 * time.Second})
if err != nil {
return err
}
defer db.Close()
err = db.View(func(tx *bolt.Tx) error {
// Assume bucket exists and has keys
for _, bucket := range [][]byte{bucketKeys, bucketIDs, bucketFree} {
fmt.Fprintf(cmd.stdout, "Checking for keys in bucket named %s...\n", string(bucket))
b := tx.Bucket(bucket)
if b == nil {
fmt.Fprintf(cmd.stdout, "Unable to find a bucket named %s...\n", string(bucket))
continue
}
c := b.Cursor()
if cmd.Hexa {
for k, v := c.First(); k != nil; k, v = c.Next() {
fmt.Printf("key=%x, value=%x\n", k, v)
}
} else {
for k, v := c.First(); k != nil; k, v = c.Next() {
fmt.Printf("key=%s, value=%s\n", k, v)
}
}
}
return nil
})
return nil
}