github.com/ledgerwatch/erigon-lib@v1.0.0/kv/mdbx/kv_mdbx_temporary.go (about)

     1  /*
     2     Copyright 2021 Erigon contributors
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package mdbx
    18  
    19  import (
    20  	"context"
    21  	"os"
    22  
    23  	"github.com/ledgerwatch/erigon-lib/kv"
    24  	"github.com/ledgerwatch/log/v3"
    25  )
    26  
    27  type TemporaryMdbx struct {
    28  	db   kv.RwDB
    29  	path string
    30  }
    31  
    32  func NewTemporaryMdbx(tempdir string) (kv.RwDB, error) {
    33  	path, err := os.MkdirTemp(tempdir, "mdbx-temp")
    34  	if err != nil {
    35  		return &TemporaryMdbx{}, err
    36  	}
    37  
    38  	db, err := Open(path, log.Root(), false)
    39  	if err != nil {
    40  		return &TemporaryMdbx{}, err
    41  	}
    42  
    43  	return &TemporaryMdbx{
    44  		db:   db,
    45  		path: path,
    46  	}, nil
    47  }
    48  
    49  func (t *TemporaryMdbx) ReadOnly() bool { return t.db.ReadOnly() }
    50  func (t *TemporaryMdbx) Update(ctx context.Context, f func(kv.RwTx) error) error {
    51  	return t.db.Update(ctx, f)
    52  }
    53  
    54  func (t *TemporaryMdbx) UpdateNosync(ctx context.Context, f func(kv.RwTx) error) error {
    55  	return t.db.UpdateNosync(ctx, f)
    56  }
    57  
    58  func (t *TemporaryMdbx) BeginRw(ctx context.Context) (kv.RwTx, error) {
    59  	return t.db.BeginRw(ctx)
    60  }
    61  func (t *TemporaryMdbx) BeginRwNosync(ctx context.Context) (kv.RwTx, error) {
    62  	return t.db.BeginRwNosync(ctx)
    63  }
    64  
    65  func (t *TemporaryMdbx) View(ctx context.Context, f func(kv.Tx) error) error {
    66  	return t.db.View(ctx, f)
    67  }
    68  
    69  func (t *TemporaryMdbx) BeginRo(ctx context.Context) (kv.Tx, error) {
    70  	return t.db.BeginRo(ctx)
    71  }
    72  
    73  func (t *TemporaryMdbx) AllTables() kv.TableCfg {
    74  	return t.db.AllTables()
    75  }
    76  
    77  func (t *TemporaryMdbx) PageSize() uint64 {
    78  	return t.db.PageSize()
    79  }
    80  
    81  func (t *TemporaryMdbx) Close() {
    82  	t.db.Close()
    83  	os.RemoveAll(t.path)
    84  }