github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/performance/kvbench/bolt_store.go (about)

     1  // Copyright 2021 Dolthub, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package kvbench
    16  
    17  import (
    18  	"path"
    19  
    20  	"github.com/boltdb/bolt"
    21  )
    22  
    23  const (
    24  	dbFileName = "bolt_store.db"
    25  	bucketName = "bench"
    26  )
    27  
    28  func newBoltStore(dir string) keyValStore {
    29  	db, err := bolt.Open(path.Join(dir, dbFileName), 0600, nil)
    30  	if err != nil {
    31  		panic(err)
    32  	}
    33  
    34  	err = db.Update(func(tx *bolt.Tx) error {
    35  		_, err := tx.CreateBucketIfNotExists([]byte(bucketName))
    36  		return err
    37  	})
    38  	if err != nil {
    39  		panic(err)
    40  	}
    41  
    42  	return boltStore{DB: db}
    43  }
    44  
    45  type boltStore struct {
    46  	*bolt.DB
    47  }
    48  
    49  var _ keyValStore = boltStore{}
    50  
    51  func (bs boltStore) get(key []byte) (val []byte, ok bool) {
    52  	err := bs.DB.View(func(tx *bolt.Tx) (err error) {
    53  		b := tx.Bucket([]byte(bucketName))
    54  		v := b.Get(key)
    55  		ok = v != nil
    56  		if ok {
    57  			val = make([]byte, len(v))
    58  			copy(val, v)
    59  		}
    60  		return
    61  	})
    62  	if err != nil {
    63  		panic(err)
    64  	}
    65  	return val, ok
    66  }
    67  
    68  func (bs boltStore) put(key, val []byte) {
    69  	err := bs.DB.Update(func(tx *bolt.Tx) (err error) {
    70  		b := tx.Bucket([]byte(bucketName))
    71  		return b.Put(key, val)
    72  	})
    73  	if err != nil {
    74  		panic(err)
    75  	}
    76  }
    77  
    78  func (bs boltStore) putMany(keys, vals [][]byte) {
    79  	err := bs.DB.Update(func(tx *bolt.Tx) (err error) {
    80  		b := tx.Bucket([]byte(bucketName))
    81  		for i := range keys {
    82  			err = b.Put(keys[i], vals[i])
    83  			if err != nil {
    84  				break
    85  			}
    86  		}
    87  		return
    88  	})
    89  	if err != nil {
    90  		panic(err)
    91  	}
    92  }
    93  
    94  func (bs boltStore) delete(key []byte) {
    95  	err := bs.DB.Update(func(tx *bolt.Tx) (err error) {
    96  		b := tx.Bucket([]byte(bucketName))
    97  		return b.Put(key, nil)
    98  	})
    99  	if err != nil {
   100  		panic(err)
   101  	}
   102  }