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author | Mission Liao <mission.liao@dexon.org> | 2018-12-18 10:02:30 +0800 |
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committer | Wei-Ning Huang <w@byzantine-lab.io> | 2019-06-12 17:27:19 +0800 |
commit | 70ab62c1b72c6fef8dd2c8e405d7f9823f70f475 (patch) | |
tree | 114f68dd0281d972b18e875c3f34a83af7d5962d /dex/db | |
parent | aa34cc1069a815ed66ec8fae0988fc4f29687bfd (diff) | |
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vendor: sync to latest core (#91)
- Implement new methods in db to cache DKG
private key.
- Implement new methods in db to cache compaction
chain tip.
Diffstat (limited to 'dex/db')
-rw-r--r-- | dex/db/db.go | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/dex/db/db.go b/dex/db/db.go new file mode 100644 index 000000000..d51c2df54 --- /dev/null +++ b/dex/db/db.go @@ -0,0 +1,107 @@ +// 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) HasDKGPrivateKey(round uint64) (bool, error) { + return rawdb.HasCoreDKGPrivateKey(d.db, round) +} + +func (d *DB) GetDKGPrivateKey(round uint64) (coreDKG.PrivateKey, error) { + key := rawdb.ReadCoreDKGPrivateKey(d.db, round) + if key == nil { + return coreDKG.PrivateKey{}, coreDb.ErrDKGPrivateKeyDoesNotExist + } + return *key, nil +} + +func (d *DB) PutDKGPrivateKey(round uint64, key coreDKG.PrivateKey) error { + has, err := d.HasDKGPrivateKey(round) + if err != nil { + return err + } + if has { + return coreDb.ErrDKGPrivateKeyExists + } + return rawdb.WriteCoreDKGPrivateKey(d.db, round, &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) Close() error { return nil } |