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author | Péter Szilágyi <peterke@gmail.com> | 2018-05-07 19:35:06 +0800 |
---|---|---|
committer | GitHub <noreply@github.com> | 2018-05-07 19:35:06 +0800 |
commit | 6cf0ab38bd0af77d81aad4c104979cebee9e3e63 (patch) | |
tree | 142d6f965c44dcf9e2182da67b7bbc978c573448 /core/headerchain.go | |
parent | 5463ed99968bf71685a2a8ee9dbf8705912f00cb (diff) | |
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core/rawdb: separate raw database access to own package (#16666)
Diffstat (limited to 'core/headerchain.go')
-rw-r--r-- | core/headerchain.go | 77 |
1 files changed, 39 insertions, 38 deletions
diff --git a/core/headerchain.go b/core/headerchain.go index 2d1b0a2a1..2ac0cccc7 100644 --- a/core/headerchain.go +++ b/core/headerchain.go @@ -28,6 +28,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/log" @@ -97,7 +98,7 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine c } hc.currentHeader.Store(hc.genesisHeader) - if head := GetHeadBlockHash(chainDb); head != (common.Hash{}) { + if head := rawdb.ReadHeadBlockHash(chainDb); head != (common.Hash{}) { if chead := hc.GetHeaderByHash(head); chead != nil { hc.currentHeader.Store(chead) } @@ -109,13 +110,14 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine c // GetBlockNumber retrieves the block number belonging to the given hash // from the cache or database -func (hc *HeaderChain) GetBlockNumber(hash common.Hash) uint64 { +func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64 { if cached, ok := hc.numberCache.Get(hash); ok { - return cached.(uint64) + number := cached.(uint64) + return &number } - number := GetBlockNumber(hc.chainDb, hash) - if number != missingNumber { - hc.numberCache.Add(hash, number) + number := rawdb.ReadHeaderNumber(hc.chainDb, hash) + if number != nil { + hc.numberCache.Add(hash, *number) } return number } @@ -147,20 +149,19 @@ func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, er if err := hc.WriteTd(hash, number, externTd); err != nil { log.Crit("Failed to write header total difficulty", "err", err) } - if err := WriteHeader(hc.chainDb, header); err != nil { - log.Crit("Failed to write header content", "err", err) - } + rawdb.WriteHeader(hc.chainDb, header) + // If the total difficulty is higher than our known, add it to the canonical chain // Second clause in the if statement reduces the vulnerability to selfish mining. // Please refer to http://www.cs.cornell.edu/~ie53/publications/btcProcFC.pdf if externTd.Cmp(localTd) > 0 || (externTd.Cmp(localTd) == 0 && mrand.Float64() < 0.5) { // Delete any canonical number assignments above the new head for i := number + 1; ; i++ { - hash := GetCanonicalHash(hc.chainDb, i) + hash := rawdb.ReadCanonicalHash(hc.chainDb, i) if hash == (common.Hash{}) { break } - DeleteCanonicalHash(hc.chainDb, i) + rawdb.DeleteCanonicalHash(hc.chainDb, i) } // Overwrite any stale canonical number assignments var ( @@ -168,20 +169,17 @@ func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, er headNumber = header.Number.Uint64() - 1 headHeader = hc.GetHeader(headHash, headNumber) ) - for GetCanonicalHash(hc.chainDb, headNumber) != headHash { - WriteCanonicalHash(hc.chainDb, headHash, headNumber) + for rawdb.ReadCanonicalHash(hc.chainDb, headNumber) != headHash { + rawdb.WriteCanonicalHash(hc.chainDb, headHash, headNumber) headHash = headHeader.ParentHash headNumber = headHeader.Number.Uint64() - 1 headHeader = hc.GetHeader(headHash, headNumber) } // Extend the canonical chain with the new header - if err := WriteCanonicalHash(hc.chainDb, hash, number); err != nil { - log.Crit("Failed to insert header number", "err", err) - } - if err := WriteHeadHeaderHash(hc.chainDb, hash); err != nil { - log.Crit("Failed to insert head header hash", "err", err) - } + rawdb.WriteCanonicalHash(hc.chainDb, hash, number) + rawdb.WriteHeadHeaderHash(hc.chainDb, hash) + hc.currentHeaderHash = hash hc.currentHeader.Store(types.CopyHeader(header)) @@ -316,7 +314,7 @@ func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int { if cached, ok := hc.tdCache.Get(hash); ok { return cached.(*big.Int) } - td := GetTd(hc.chainDb, hash, number) + td := rawdb.ReadTd(hc.chainDb, hash, number) if td == nil { return nil } @@ -328,15 +326,17 @@ func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int { // GetTdByHash retrieves a block's total difficulty in the canonical chain from the // database by hash, caching it if found. func (hc *HeaderChain) GetTdByHash(hash common.Hash) *big.Int { - return hc.GetTd(hash, hc.GetBlockNumber(hash)) + number := hc.GetBlockNumber(hash) + if number == nil { + return nil + } + return hc.GetTd(hash, *number) } // WriteTd stores a block's total difficulty into the database, also caching it // along the way. func (hc *HeaderChain) WriteTd(hash common.Hash, number uint64, td *big.Int) error { - if err := WriteTd(hc.chainDb, hash, number, td); err != nil { - return err - } + rawdb.WriteTd(hc.chainDb, hash, number, td) hc.tdCache.Add(hash, new(big.Int).Set(td)) return nil } @@ -348,7 +348,7 @@ func (hc *HeaderChain) GetHeader(hash common.Hash, number uint64) *types.Header if header, ok := hc.headerCache.Get(hash); ok { return header.(*types.Header) } - header := GetHeader(hc.chainDb, hash, number) + header := rawdb.ReadHeader(hc.chainDb, hash, number) if header == nil { return nil } @@ -360,7 +360,11 @@ func (hc *HeaderChain) GetHeader(hash common.Hash, number uint64) *types.Header // GetHeaderByHash retrieves a block header from the database by hash, caching it if // found. func (hc *HeaderChain) GetHeaderByHash(hash common.Hash) *types.Header { - return hc.GetHeader(hash, hc.GetBlockNumber(hash)) + number := hc.GetBlockNumber(hash) + if number == nil { + return nil + } + return hc.GetHeader(hash, *number) } // HasHeader checks if a block header is present in the database or not. @@ -368,14 +372,13 @@ func (hc *HeaderChain) HasHeader(hash common.Hash, number uint64) bool { if hc.numberCache.Contains(hash) || hc.headerCache.Contains(hash) { return true } - ok, _ := hc.chainDb.Has(headerKey(hash, number)) - return ok + return rawdb.HasHeader(hc.chainDb, hash, number) } // GetHeaderByNumber retrieves a block header from the database by number, // caching it (associated with its hash) if found. func (hc *HeaderChain) GetHeaderByNumber(number uint64) *types.Header { - hash := GetCanonicalHash(hc.chainDb, number) + hash := rawdb.ReadCanonicalHash(hc.chainDb, number) if hash == (common.Hash{}) { return nil } @@ -390,9 +393,8 @@ func (hc *HeaderChain) CurrentHeader() *types.Header { // SetCurrentHeader sets the current head header of the canonical chain. func (hc *HeaderChain) SetCurrentHeader(head *types.Header) { - if err := WriteHeadHeaderHash(hc.chainDb, head.Hash()); err != nil { - log.Crit("Failed to insert head header hash", "err", err) - } + rawdb.WriteHeadHeaderHash(hc.chainDb, head.Hash()) + hc.currentHeader.Store(head) hc.currentHeaderHash = head.Hash() } @@ -416,13 +418,14 @@ func (hc *HeaderChain) SetHead(head uint64, delFn DeleteCallback) { if delFn != nil { delFn(hash, num) } - DeleteHeader(hc.chainDb, hash, num) - DeleteTd(hc.chainDb, hash, num) + rawdb.DeleteHeader(hc.chainDb, hash, num) + rawdb.DeleteTd(hc.chainDb, hash, num) + hc.currentHeader.Store(hc.GetHeader(hdr.ParentHash, hdr.Number.Uint64()-1)) } // Roll back the canonical chain numbering for i := height; i > head; i-- { - DeleteCanonicalHash(hc.chainDb, i) + rawdb.DeleteCanonicalHash(hc.chainDb, i) } // Clear out any stale content from the caches hc.headerCache.Purge() @@ -434,9 +437,7 @@ func (hc *HeaderChain) SetHead(head uint64, delFn DeleteCallback) { } hc.currentHeaderHash = hc.CurrentHeader().Hash() - if err := WriteHeadHeaderHash(hc.chainDb, hc.currentHeaderHash); err != nil { - log.Crit("Failed to reset head header hash", "err", err) - } + rawdb.WriteHeadHeaderHash(hc.chainDb, hc.currentHeaderHash) } // SetGenesis sets a new genesis block header for the chain |