mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-07-25 06:06:44 +00:00
a898f45f68
* migrate ethutil scripts under swarm/cmd/swarm * add basic peer connection bootstrap test * hive keepAlive launches with alarm in case no discover and no kaddb * fix IP address formatting issue [::1] -> became ::1 which refused to dial, now use discover.NewNode#String * database Print removed * add another syncer test for aborted sync * forwarding: only send if syncer is setup on the peer (not blocking) * add control api for network (block read) * syncing test for stalled/aborted connection
83 lines
1.6 KiB
Go
83 lines
1.6 KiB
Go
package storage
|
|
|
|
// this is a clone of an earlier state of the ethereum ethdb/database
|
|
// no need for queueing/caching
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/ethereum/go-ethereum/compression/rle"
|
|
"github.com/syndtr/goleveldb/leveldb"
|
|
"github.com/syndtr/goleveldb/leveldb/iterator"
|
|
"github.com/syndtr/goleveldb/leveldb/opt"
|
|
)
|
|
|
|
const openFileLimit = 128
|
|
|
|
type LDBDatabase struct {
|
|
db *leveldb.DB
|
|
comp bool
|
|
}
|
|
|
|
func NewLDBDatabase(file string) (*LDBDatabase, error) {
|
|
// Open the db
|
|
db, err := leveldb.OpenFile(file, &opt.Options{OpenFilesCacheCapacity: openFileLimit})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
database := &LDBDatabase{db: db, comp: false}
|
|
|
|
return database, nil
|
|
}
|
|
|
|
func (self *LDBDatabase) Put(key []byte, value []byte) {
|
|
if self.comp {
|
|
value = rle.Compress(value)
|
|
}
|
|
|
|
err := self.db.Put(key, value, nil)
|
|
if err != nil {
|
|
fmt.Println("Error put", err)
|
|
}
|
|
}
|
|
|
|
func (self *LDBDatabase) Get(key []byte) ([]byte, error) {
|
|
dat, err := self.db.Get(key, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if self.comp {
|
|
return rle.Decompress(dat)
|
|
}
|
|
|
|
return dat, nil
|
|
}
|
|
|
|
func (self *LDBDatabase) Delete(key []byte) error {
|
|
return self.db.Delete(key, nil)
|
|
}
|
|
|
|
func (self *LDBDatabase) LastKnownTD() []byte {
|
|
data, _ := self.Get([]byte("LTD"))
|
|
|
|
if len(data) == 0 {
|
|
data = []byte{0x0}
|
|
}
|
|
|
|
return data
|
|
}
|
|
|
|
func (self *LDBDatabase) NewIterator() iterator.Iterator {
|
|
return self.db.NewIterator(nil, nil)
|
|
}
|
|
|
|
func (self *LDBDatabase) Write(batch *leveldb.Batch) error {
|
|
return self.db.Write(batch, nil)
|
|
}
|
|
|
|
func (self *LDBDatabase) Close() {
|
|
// Close the leveldb database
|
|
self.db.Close()
|
|
}
|