diff options
Diffstat (limited to 'core/chain_util.go')
| -rw-r--r-- | core/chain_util.go | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/core/chain_util.go b/core/chain_util.go index 42b6a5be2..907e6668c 100644 --- a/core/chain_util.go +++ b/core/chain_util.go @@ -34,6 +34,7 @@ import ( var ( headHeaderKey = []byte("LastHeader") headBlockKey = []byte("LastBlock") + headFastKey = []byte("LastFast") blockPrefix = []byte("block-") blockNumPrefix = []byte("block-num-") @@ -129,7 +130,7 @@ func GetCanonicalHash(db ethdb.Database, number uint64) common.Hash { // header. The difference between this and GetHeadBlockHash is that whereas the // last block hash is only updated upon a full block import, the last header // hash is updated already at header import, allowing head tracking for the -// fast synchronization mechanism. +// light synchronization mechanism. func GetHeadHeaderHash(db ethdb.Database) common.Hash { data, _ := db.Get(headHeaderKey) if len(data) == 0 { @@ -147,6 +148,18 @@ func GetHeadBlockHash(db ethdb.Database) common.Hash { return common.BytesToHash(data) } +// GetHeadFastBlockHash retrieves the hash of the current canonical head block during +// fast synchronization. The difference between this and GetHeadBlockHash is that +// whereas the last block hash is only updated upon a full block import, the last +// fast hash is updated when importing pre-processed blocks. +func GetHeadFastBlockHash(db ethdb.Database) common.Hash { + data, _ := db.Get(headFastKey) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) +} + // GetHeaderRLP retrieves a block header in its raw RLP database encoding, or nil // if the header's not found. func GetHeaderRLP(db ethdb.Database, hash common.Hash) rlp.RawValue { @@ -249,6 +262,15 @@ func WriteHeadBlockHash(db ethdb.Database, hash common.Hash) error { return nil } +// WriteHeadFastBlockHash stores the fast head block's hash. +func WriteHeadFastBlockHash(db ethdb.Database, hash common.Hash) error { + if err := db.Put(headFastKey, hash.Bytes()); err != nil { + glog.Fatalf("failed to store last fast block's hash into database: %v", err) + return err + } + return nil +} + // WriteHeader serializes a block header into the database. func WriteHeader(db ethdb.Database, header *types.Header) error { data, err := rlp.EncodeToBytes(header) |