diff options
Diffstat (limited to 'core/genesis.go')
| -rw-r--r-- | core/genesis.go | 156 |
1 files changed, 149 insertions, 7 deletions
diff --git a/core/genesis.go b/core/genesis.go index 78249a7..7cab7bf 100644 --- a/core/genesis.go +++ b/core/genesis.go @@ -19,28 +19,90 @@ package core import ( "bytes" "encoding/hex" + "encoding/json" "errors" "fmt" "math/big" "strings" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/state" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/params" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/core" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/state" + "github.com/ava-labs/go-ethereum/common/math" "github.com/ava-labs/go-ethereum/crypto" "github.com/ava-labs/go-ethereum/ethdb" "github.com/ava-labs/go-ethereum/log" - "github.com/ava-labs/go-ethereum/params" "github.com/ava-labs/go-ethereum/rlp" ) var errGenesisNoConfig = errors.New("genesis has no chain configuration") -type Genesis = core.Genesis -type GenesisAlloc = core.GenesisAlloc -type GenesisAccount = core.GenesisAccount +// Genesis specifies the header fields, state of a genesis block. It also defines hard +// fork switch-over blocks through the chain configuration. +type Genesis struct { + Config *params.ChainConfig `json:"config"` + Nonce uint64 `json:"nonce"` + Timestamp uint64 `json:"timestamp"` + ExtraData []byte `json:"extraData"` + GasLimit uint64 `json:"gasLimit" gencodec:"required"` + Difficulty *big.Int `json:"difficulty" gencodec:"required"` + Mixhash common.Hash `json:"mixHash"` + Coinbase common.Address `json:"coinbase"` + Alloc GenesisAlloc `json:"alloc" gencodec:"required"` + + // These fields are used for consensus tests. Please don't use them + // in actual genesis blocks. + Number uint64 `json:"number"` + GasUsed uint64 `json:"gasUsed"` + ParentHash common.Hash `json:"parentHash"` +} + +// GenesisAlloc specifies the initial state that is part of the genesis block. +type GenesisAlloc map[common.Address]GenesisAccount + +func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error { + m := make(map[common.UnprefixedAddress]GenesisAccount) + if err := json.Unmarshal(data, &m); err != nil { + return err + } + *ga = make(GenesisAlloc) + for addr, a := range m { + (*ga)[common.Address(addr)] = a + } + return nil +} + +// GenesisAccount is an account in the state of the genesis block. +type GenesisAccount struct { + Code []byte `json:"code,omitempty"` + Storage map[common.Hash]common.Hash `json:"storage,omitempty"` + Balance *big.Int `json:"balance" gencodec:"required"` + Nonce uint64 `json:"nonce,omitempty"` + PrivateKey []byte `json:"secretKey,omitempty"` // for tests +} + +// field type overrides for gencodec +type genesisSpecMarshaling struct { + Nonce math.HexOrDecimal64 + Timestamp math.HexOrDecimal64 + ExtraData hexutil.Bytes + GasLimit math.HexOrDecimal64 + GasUsed math.HexOrDecimal64 + Number math.HexOrDecimal64 + Difficulty *math.HexOrDecimal256 + Alloc map[common.UnprefixedAddress]GenesisAccount +} + +type genesisAccountMarshaling struct { + Code hexutil.Bytes + Balance *math.HexOrDecimal256 + Nonce math.HexOrDecimal64 + Storage map[storageJSON]storageJSON + PrivateKey hexutil.Bytes +} // storageJSON represents a 256 bit byte array, but allows less than 256 bits when // unmarshaling from hex. @@ -182,6 +244,86 @@ func configOrDefault(g *Genesis, ghash common.Hash) *params.ChainConfig { } } +// ToBlock creates the genesis block and writes state of a genesis specification +// to the given database (or discards it if nil). +func (g *Genesis) ToBlock(db ethdb.Database) *types.Block { + if db == nil { + db = rawdb.NewMemoryDatabase() + } + statedb, _ := state.New(common.Hash{}, state.NewDatabase(db)) + for addr, account := range g.Alloc { + statedb.AddBalance(addr, account.Balance) + statedb.SetCode(addr, account.Code) + statedb.SetNonce(addr, account.Nonce) + for key, value := range account.Storage { + statedb.SetState(addr, key, value) + } + } + root := statedb.IntermediateRoot(false) + head := &types.Header{ + Number: new(big.Int).SetUint64(g.Number), + Nonce: types.EncodeNonce(g.Nonce), + Time: g.Timestamp, + ParentHash: g.ParentHash, + Extra: g.ExtraData, + GasLimit: g.GasLimit, + GasUsed: g.GasUsed, + Difficulty: g.Difficulty, + MixDigest: g.Mixhash, + Coinbase: g.Coinbase, + Root: root, + } + if g.GasLimit == 0 { + head.GasLimit = params.GenesisGasLimit + } + if g.Difficulty == nil { + head.Difficulty = params.GenesisDifficulty + } + statedb.Commit(false) + statedb.Database().TrieDB().Commit(root, true) + + return types.NewBlock(head, nil, nil, nil) +} + +// Commit writes the block and state of a genesis specification to the database. +// The block is committed as the canonical head block. +func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) { + block := g.ToBlock(db) + if block.Number().Sign() != 0 { + return nil, fmt.Errorf("can't commit genesis block with number > 0") + } + rawdb.WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty) + rawdb.WriteBlock(db, block) + rawdb.WriteReceipts(db, block.Hash(), block.NumberU64(), nil) + rawdb.WriteCanonicalHash(db, block.Hash(), block.NumberU64()) + rawdb.WriteHeadBlockHash(db, block.Hash()) + rawdb.WriteHeadFastBlockHash(db, block.Hash()) + rawdb.WriteHeadHeaderHash(db, block.Hash()) + + config := g.Config + if config == nil { + config = params.AllEthashProtocolChanges + } + rawdb.WriteChainConfig(db, block.Hash(), config) + return block, nil +} + +// MustCommit writes the genesis block and state to db, panicking on error. +// The block is committed as the canonical head block. +func (g *Genesis) MustCommit(db ethdb.Database) *types.Block { + block, err := g.Commit(db) + if err != nil { + panic(err) + } + return block +} + +// GenesisBlockForTesting creates and writes a block in which addr has the given wei balance. +func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block { + g := Genesis{Alloc: GenesisAlloc{addr: {Balance: balance}}} + return g.MustCommit(db) +} + // DefaultGenesisBlock returns the Ethereum main net genesis block. func DefaultGenesisBlock() *Genesis { return &Genesis{ |