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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package db
import (
coreCommon "github.com/dexon-foundation/dexon-consensus/common"
coreDKG "github.com/dexon-foundation/dexon-consensus/core/crypto/dkg"
coreDb "github.com/dexon-foundation/dexon-consensus/core/db"
coreTypes "github.com/dexon-foundation/dexon-consensus/core/types"
"github.com/dexon-foundation/dexon/common"
"github.com/dexon-foundation/dexon/core/rawdb"
"github.com/dexon-foundation/dexon/ethdb"
)
// DB implement dexon-consensus BlockDatabase interface.
type DB struct {
db ethdb.Database
}
func NewDatabase(db ethdb.Database) *DB {
return &DB{db}
}
func (d *DB) HasBlock(hash coreCommon.Hash) bool {
return rawdb.HasCoreBlock(d.db, common.Hash(hash))
}
func (d *DB) GetBlock(hash coreCommon.Hash) (coreTypes.Block, error) {
block := rawdb.ReadCoreBlock(d.db, common.Hash(hash))
if block == nil {
return coreTypes.Block{}, coreDb.ErrBlockDoesNotExist
}
return *block, nil
}
func (d *DB) GetAllBlocks() (coreDb.BlockIterator, error) {
return nil, coreDb.ErrNotImplemented
}
func (d *DB) UpdateBlock(block coreTypes.Block) error {
if !d.HasBlock(block.Hash) {
return coreDb.ErrBlockDoesNotExist
}
rawdb.WriteCoreBlock(d.db, common.Hash(block.Hash), &block)
return nil
}
func (d *DB) PutBlock(block coreTypes.Block) error {
if d.HasBlock(block.Hash) {
return coreDb.ErrBlockExists
}
rawdb.WriteCoreBlock(d.db, common.Hash(block.Hash), &block)
return nil
}
func (d *DB) GetDKGPrivateKey(round, reset uint64) (coreDKG.PrivateKey, error) {
key := rawdb.ReadCoreDKGPrivateKey(d.db, round, reset)
if key == nil {
return coreDKG.PrivateKey{}, coreDb.ErrDKGPrivateKeyDoesNotExist
}
return *key, nil
}
func (d *DB) PutDKGPrivateKey(round, reset uint64, key coreDKG.PrivateKey) error {
_, err := d.GetDKGPrivateKey(round, reset)
if err == nil {
return coreDb.ErrDKGPrivateKeyExists
}
if err != coreDb.ErrDKGPrivateKeyDoesNotExist {
return err
}
return rawdb.WriteCoreDKGPrivateKey(d.db, round, reset, &key)
}
func (d *DB) PutCompactionChainTipInfo(hash coreCommon.Hash, height uint64) error {
_, currentHeight := d.GetCompactionChainTipInfo()
if height <= currentHeight {
return coreDb.ErrInvalidCompactionChainTipHeight
}
return rawdb.WriteCoreCompactionChainTip(d.db, hash, height)
}
func (d *DB) GetCompactionChainTipInfo() (hash coreCommon.Hash, height uint64) {
return rawdb.ReadCoreCompactionChainTip(d.db)
}
func (d *DB) PutOrUpdateDKGProtocol(
protocol coreDb.DKGProtocolInfo) error {
return rawdb.WriteCoreDKGProtocol(d.db, &protocol)
}
func (d *DB) GetDKGProtocol() (
protocol coreDb.DKGProtocolInfo, err error) {
dkgProtocol := rawdb.ReadCoreDKGProtocol(d.db)
if dkgProtocol == nil {
return coreDb.DKGProtocolInfo{}, coreDb.ErrDKGProtocolDoesNotExist
}
return *dkgProtocol, nil
}
func (d *DB) Close() error { return nil }
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