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https://gitlab.com/pulsechaincom/erigon-pulse.git
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77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package ethdb
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import (
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"context"
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"github.com/ledgerwatch/turbo-geth/common"
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)
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type KV interface {
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View(ctx context.Context, f func(tx Tx) error) error
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Update(ctx context.Context, f func(tx Tx) error) error
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Close()
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Begin(ctx context.Context, writable bool) (Tx, error)
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IdealBatchSize() int
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}
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type NativeGet interface {
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Get(ctx context.Context, bucket, key []byte) ([]byte, error)
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Has(ctx context.Context, bucket, key []byte) (bool, error)
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}
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type Tx interface {
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Bucket(name []byte) Bucket
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Commit(ctx context.Context) error
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Rollback()
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}
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type Bucket interface {
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Get(key []byte) (val []byte, err error)
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Put(key []byte, value []byte) error
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Delete(key []byte) error
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Cursor() Cursor
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Size() (uint64, error)
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Clear() error
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}
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type Cursor interface {
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Prefix(v []byte) Cursor
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MatchBits(uint) Cursor
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Prefetch(v uint) Cursor
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NoValues() NoValuesCursor
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First() ([]byte, []byte, error)
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Seek(seek []byte) ([]byte, []byte, error)
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SeekTo(seek []byte) ([]byte, []byte, error)
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Next() ([]byte, []byte, error)
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Walk(walker func(k, v []byte) (bool, error)) error
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Put(key []byte, value []byte) error
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Delete(key []byte) error
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Append(key []byte, value []byte) error // Danger: if provided data will not sorted (or bucket have old records which mess with new in sorting manner) - db will corrupt. Method also doesn't tolerate duplicates.
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}
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type NoValuesCursor interface {
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First() ([]byte, uint32, error)
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Seek(seek []byte) ([]byte, uint32, error)
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Next() ([]byte, uint32, error)
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Walk(walker func(k []byte, vSize uint32) (bool, error)) error
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}
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type HasStats interface {
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DiskSize(context.Context) (common.StorageSize, error) // db size
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BucketsStat(context.Context) (map[string]common.StorageBucketWriteStats, error)
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}
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type DbProvider uint8
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const (
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Bolt DbProvider = iota
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Badger
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Remote
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Lmdb
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)
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