mirror of https://github.com/ethereum/go-ethereum
This commit solves several issues concerning the genesis block: * Genesis/ChainConfig loading was handled by cmd/geth code. This left library users in the cold. They could specify a JSON-encoded string and overwrite the config, but didn't get any of the additional checks performed by geth. * Decoding and writing of genesis JSON was conflated in WriteGenesisBlock. This made it a lot harder to embed the genesis block into the forthcoming config file loader. This commit changes things so there is a single Genesis type that represents genesis blocks. All uses of Write*Genesis* are changed to use the new type instead. * If the chain config supplied by the user was incompatible with the current chain (i.e. the chain had already advanced beyond a scheduled fork), it got overwritten. This is not an issue in practice because previous forks have always had the highest total difficulty. It might matter in the future though. The new code reverts the local chain to the point of the fork when upgrading configuration. The change to genesis block data removes compression library dependencies from package core.pull/3794/head
Felix Lange
8 years ago
parent
67c47459f2
commit
37dd9086ec
File diff suppressed because one or more lines are too long
@ -0,0 +1,106 @@ |
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// generated by github.com/fjl/gencodec, do not edit.
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package core |
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import ( |
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"encoding/json" |
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"errors" |
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"math/big" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/common/hexutil" |
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"github.com/ethereum/go-ethereum/common/math" |
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"github.com/ethereum/go-ethereum/params" |
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) |
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func (g *Genesis) MarshalJSON() ([]byte, error) { |
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type GenesisJSON struct { |
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ChainConfig *params.ChainConfig `json:"config" optional:"true"` |
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Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` |
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Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` |
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ParentHash *common.Hash `json:"parentHash" optional:"true"` |
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ExtraData hexutil.Bytes `json:"extraData" optional:"true"` |
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GasLimit *math.HexOrDecimal64 `json:"gasLimit"` |
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Difficulty *math.HexOrDecimal256 `json:"difficulty"` |
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Mixhash *common.Hash `json:"mixHash" optional:"true"` |
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Coinbase *common.Address `json:"coinbase" optional:"true"` |
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Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` |
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} |
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var enc GenesisJSON |
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enc.ChainConfig = g.Config |
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enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) |
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enc.Timestamp = (*math.HexOrDecimal64)(&g.Timestamp) |
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enc.ParentHash = &g.ParentHash |
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if g.ExtraData != nil { |
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enc.ExtraData = g.ExtraData |
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} |
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enc.GasLimit = (*math.HexOrDecimal64)(&g.GasLimit) |
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enc.Difficulty = (*math.HexOrDecimal256)(g.Difficulty) |
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enc.Mixhash = &g.Mixhash |
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enc.Coinbase = &g.Coinbase |
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if g.Alloc != nil { |
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enc.Alloc = make(map[common.UnprefixedAddress]GenesisAccount, len(g.Alloc)) |
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for k, v := range g.Alloc { |
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enc.Alloc[common.UnprefixedAddress(k)] = v |
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} |
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} |
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return json.Marshal(&enc) |
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} |
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func (g *Genesis) UnmarshalJSON(input []byte) error { |
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type GenesisJSON struct { |
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ChainConfig *params.ChainConfig `json:"config" optional:"true"` |
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Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` |
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Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` |
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ParentHash *common.Hash `json:"parentHash" optional:"true"` |
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ExtraData hexutil.Bytes `json:"extraData" optional:"true"` |
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GasLimit *math.HexOrDecimal64 `json:"gasLimit"` |
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Difficulty *math.HexOrDecimal256 `json:"difficulty"` |
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Mixhash *common.Hash `json:"mixHash" optional:"true"` |
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Coinbase *common.Address `json:"coinbase" optional:"true"` |
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Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` |
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} |
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var dec GenesisJSON |
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if err := json.Unmarshal(input, &dec); err != nil { |
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return err |
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} |
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var x Genesis |
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if dec.ChainConfig != nil { |
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x.Config = dec.ChainConfig |
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} |
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if dec.Nonce != nil { |
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x.Nonce = uint64(*dec.Nonce) |
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} |
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if dec.Timestamp != nil { |
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x.Timestamp = uint64(*dec.Timestamp) |
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} |
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if dec.ParentHash != nil { |
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x.ParentHash = *dec.ParentHash |
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} |
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if dec.ExtraData != nil { |
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x.ExtraData = dec.ExtraData |
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} |
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if dec.GasLimit == nil { |
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return errors.New("missing required field 'gasLimit' for Genesis") |
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} |
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x.GasLimit = uint64(*dec.GasLimit) |
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if dec.Difficulty == nil { |
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return errors.New("missing required field 'difficulty' for Genesis") |
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} |
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x.Difficulty = (*big.Int)(dec.Difficulty) |
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if dec.Mixhash != nil { |
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x.Mixhash = *dec.Mixhash |
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} |
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if dec.Coinbase != nil { |
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x.Coinbase = *dec.Coinbase |
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} |
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if dec.Alloc == nil { |
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return errors.New("missing required field 'alloc' for Genesis") |
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} |
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x.Alloc = make(GenesisAlloc, len(dec.Alloc)) |
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for k, v := range dec.Alloc { |
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x.Alloc[common.Address(k)] = v |
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} |
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*g = x |
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return nil |
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} |
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// generated by github.com/fjl/gencodec, do not edit.
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package core |
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import ( |
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"encoding/json" |
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"errors" |
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"math/big" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/common/hexutil" |
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"github.com/ethereum/go-ethereum/common/math" |
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) |
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func (g *GenesisAccount) MarshalJSON() ([]byte, error) { |
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type GenesisAccountJSON struct { |
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Code hexutil.Bytes `json:"code" optional:"true"` |
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Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` |
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Balance *math.HexOrDecimal256 `json:"balance"` |
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Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` |
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} |
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var enc GenesisAccountJSON |
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if g.Code != nil { |
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enc.Code = g.Code |
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} |
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if g.Storage != nil { |
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enc.Storage = g.Storage |
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} |
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enc.Balance = (*math.HexOrDecimal256)(g.Balance) |
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enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) |
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return json.Marshal(&enc) |
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} |
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func (g *GenesisAccount) UnmarshalJSON(input []byte) error { |
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type GenesisAccountJSON struct { |
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Code hexutil.Bytes `json:"code" optional:"true"` |
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Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` |
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Balance *math.HexOrDecimal256 `json:"balance"` |
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Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` |
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} |
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var dec GenesisAccountJSON |
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if err := json.Unmarshal(input, &dec); err != nil { |
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return err |
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} |
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var x GenesisAccount |
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if dec.Code != nil { |
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x.Code = dec.Code |
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} |
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if dec.Storage != nil { |
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x.Storage = dec.Storage |
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} |
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if dec.Balance == nil { |
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return errors.New("missing required field 'balance' for GenesisAccount") |
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} |
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x.Balance = (*big.Int)(dec.Balance) |
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if dec.Nonce != nil { |
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x.Nonce = uint64(*dec.Nonce) |
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} |
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*g = x |
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return nil |
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} |
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File diff suppressed because one or more lines are too long
@ -0,0 +1,161 @@ |
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// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package core |
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import ( |
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"math/big" |
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"reflect" |
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"testing" |
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"github.com/davecgh/go-spew/spew" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core/vm" |
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"github.com/ethereum/go-ethereum/ethdb" |
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"github.com/ethereum/go-ethereum/event" |
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"github.com/ethereum/go-ethereum/params" |
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"github.com/ethereum/go-ethereum/pow" |
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) |
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func TestDefaultGenesisBlock(t *testing.T) { |
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block, _ := DefaultGenesisBlock().ToBlock() |
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if block.Hash() != params.MainNetGenesisHash { |
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t.Errorf("wrong mainnet genesis hash, got %v, want %v", block.Hash(), params.MainNetGenesisHash) |
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} |
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block, _ = DefaultTestnetGenesisBlock().ToBlock() |
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if block.Hash() != params.TestNetGenesisHash { |
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t.Errorf("wrong testnet genesis hash, got %v, want %v", block.Hash(), params.TestNetGenesisHash) |
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} |
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} |
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func TestSetupGenesis(t *testing.T) { |
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var ( |
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customghash = common.HexToHash("0x89c99d90b79719238d2645c7642f2c9295246e80775b38cfd162b696817fbd50") |
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customg = Genesis{ |
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Config: ¶ms.ChainConfig{HomesteadBlock: big.NewInt(3)}, |
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Alloc: GenesisAlloc{ |
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{1}: {Balance: big.NewInt(1), Storage: map[common.Hash]common.Hash{{1}: {1}}}, |
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}, |
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} |
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oldcustomg = customg |
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) |
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oldcustomg.Config = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(2)} |
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tests := []struct { |
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name string |
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fn func(ethdb.Database) (*params.ChainConfig, common.Hash, error) |
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wantConfig *params.ChainConfig |
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wantHash common.Hash |
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wantErr error |
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}{ |
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{ |
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name: "genesis without ChainConfig", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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return SetupGenesisBlock(db, new(Genesis)) |
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}, |
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wantErr: errGenesisNoConfig, |
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wantConfig: params.AllProtocolChanges, |
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}, |
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{ |
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name: "no block in DB, genesis == nil", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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return SetupGenesisBlock(db, nil) |
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}, |
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wantHash: params.MainNetGenesisHash, |
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wantConfig: params.MainnetChainConfig, |
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}, |
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{ |
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name: "mainnet block in DB, genesis == nil", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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DefaultGenesisBlock().MustCommit(db) |
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return SetupGenesisBlock(db, nil) |
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}, |
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wantHash: params.MainNetGenesisHash, |
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wantConfig: params.MainnetChainConfig, |
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}, |
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{ |
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name: "custom block in DB, genesis == nil", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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customg.MustCommit(db) |
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return SetupGenesisBlock(db, nil) |
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}, |
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wantHash: customghash, |
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wantConfig: customg.Config, |
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}, |
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{ |
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name: "custom block in DB, genesis == testnet", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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customg.MustCommit(db) |
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return SetupGenesisBlock(db, DefaultTestnetGenesisBlock()) |
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}, |
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wantErr: &GenesisMismatchError{Stored: customghash, New: params.TestNetGenesisHash}, |
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wantHash: params.TestNetGenesisHash, |
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wantConfig: params.TestnetChainConfig, |
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}, |
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{ |
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name: "compatible config in DB", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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oldcustomg.MustCommit(db) |
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return SetupGenesisBlock(db, &customg) |
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}, |
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wantHash: customghash, |
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wantConfig: customg.Config, |
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}, |
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{ |
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name: "incompatible config in DB", |
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fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { |
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// Commit the 'old' genesis block with Homestead transition at #2.
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// Advance to block #4, past the homestead transition block of customg.
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genesis := oldcustomg.MustCommit(db) |
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bc, _ := NewBlockChain(db, oldcustomg.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) |
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bc.SetValidator(bproc{}) |
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bc.InsertChain(makeBlockChainWithDiff(genesis, []int{2, 3, 4, 5}, 0)) |
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bc.CurrentBlock() |
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// This should return a compatibility error.
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return SetupGenesisBlock(db, &customg) |
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}, |
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wantHash: customghash, |
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wantConfig: customg.Config, |
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wantErr: ¶ms.ConfigCompatError{ |
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What: "Homestead fork block", |
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StoredConfig: big.NewInt(2), |
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NewConfig: big.NewInt(3), |
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RewindTo: 1, |
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}, |
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}, |
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} |
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for _, test := range tests { |
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db, _ := ethdb.NewMemDatabase() |
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config, hash, err := test.fn(db) |
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// Check the return values.
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if !reflect.DeepEqual(err, test.wantErr) { |
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spew := spew.ConfigState{DisablePointerAddresses: true, DisableCapacities: true} |
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t.Errorf("%s: returned error %#v, want %#v", test.name, spew.NewFormatter(err), spew.NewFormatter(test.wantErr)) |
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} |
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if !reflect.DeepEqual(config, test.wantConfig) { |
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t.Errorf("%s:\nreturned %v\nwant %v", test.name, config, test.wantConfig) |
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} |
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if hash != test.wantHash { |
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t.Errorf("%s: returned hash %s, want %s", test.name, hash.Hex(), test.wantHash.Hex()) |
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} else if err == nil { |
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// Check database content.
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stored := GetBlock(db, test.wantHash, 0) |
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if stored.Hash() != test.wantHash { |
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t.Errorf("%s: block in DB has hash %s, want %s", test.name, stored.Hash(), test.wantHash) |
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} |
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} |
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} |
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} |
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@ -0,0 +1,85 @@ |
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|
// Copyright 2017 The go-ethereum Authors
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|
// This file is part of the go-ethereum library.
|
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|
//
|
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|
// The go-ethereum 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
|
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|
// (at your option) any later version.
|
||||||
|
//
|
||||||
|
// The go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
// +build none
|
||||||
|
|
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|
/* |
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|
|
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The mkalloc tool creates the genesis allocation constants in genesis_alloc.go |
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It outputs a const declaration that contains an RLP-encoded list of (address, balance) tuples. |
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go run mkalloc.go genesis.json |
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*/ |
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package main |
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import ( |
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"encoding/json" |
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"fmt" |
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"math/big" |
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"os" |
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"sort" |
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|
"strconv" |
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|
|
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"github.com/ethereum/go-ethereum/core" |
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"github.com/ethereum/go-ethereum/rlp" |
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|
) |
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|
|
||||||
|
type allocItem struct{ Addr, Balance *big.Int } |
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|
|
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|
type allocList []allocItem |
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|
|
||||||
|
func (a allocList) Len() int { return len(a) } |
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|
func (a allocList) Less(i, j int) bool { return a[i].Addr.Cmp(a[j].Addr) < 0 } |
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|
func (a allocList) Swap(i, j int) { a[i], a[j] = a[j], a[i] } |
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func makelist(g *core.Genesis) allocList { |
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a := make(allocList, 0, len(g.Alloc)) |
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|
for addr, account := range g.Alloc { |
||||||
|
if len(account.Storage) > 0 || len(account.Code) > 0 || account.Nonce != 0 { |
||||||
|
panic(fmt.Sprintf("can't encode account %x", addr)) |
||||||
|
} |
||||||
|
a = append(a, allocItem{addr.Big(), account.Balance}) |
||||||
|
} |
||||||
|
sort.Sort(a) |
||||||
|
return a |
||||||
|
} |
||||||
|
|
||||||
|
func makealloc(g *core.Genesis) string { |
||||||
|
a := makelist(g) |
||||||
|
data, err := rlp.EncodeToBytes(a) |
||||||
|
if err != nil { |
||||||
|
panic(err) |
||||||
|
} |
||||||
|
return strconv.QuoteToASCII(string(data)) |
||||||
|
} |
||||||
|
|
||||||
|
func main() { |
||||||
|
if len(os.Args) != 2 { |
||||||
|
fmt.Fprintln(os.Stderr, "Usage: mkalloc genesis.json") |
||||||
|
os.Exit(1) |
||||||
|
} |
||||||
|
|
||||||
|
g := new(core.Genesis) |
||||||
|
file, err := os.Open(os.Args[1]) |
||||||
|
if err != nil { |
||||||
|
panic(err) |
||||||
|
} |
||||||
|
if err := json.NewDecoder(file).Decode(g); err != nil { |
||||||
|
panic(err) |
||||||
|
} |
||||||
|
fmt.Println("const allocData =", makealloc(g)) |
||||||
|
} |
||||||
@ -0,0 +1,81 @@ |
|||||||
|
// Copyright 2017 The go-ethereum Authors
|
||||||
|
// This file is part of the go-ethereum library.
|
||||||
|
//
|
||||||
|
// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
package params |
||||||
|
|
||||||
|
import ( |
||||||
|
"math/big" |
||||||
|
"reflect" |
||||||
|
"testing" |
||||||
|
) |
||||||
|
|
||||||
|
func TestCheckCompatible(t *testing.T) { |
||||||
|
type test struct { |
||||||
|
stored, new *ChainConfig |
||||||
|
head uint64 |
||||||
|
wantErr *ConfigCompatError |
||||||
|
} |
||||||
|
tests := []test{ |
||||||
|
{stored: AllProtocolChanges, new: AllProtocolChanges, head: 0, wantErr: nil}, |
||||||
|
{stored: AllProtocolChanges, new: AllProtocolChanges, head: 100, wantErr: nil}, |
||||||
|
{ |
||||||
|
stored: &ChainConfig{EIP150Block: big.NewInt(10)}, |
||||||
|
new: &ChainConfig{EIP150Block: big.NewInt(20)}, |
||||||
|
head: 9, |
||||||
|
wantErr: nil, |
||||||
|
}, |
||||||
|
{ |
||||||
|
stored: AllProtocolChanges, |
||||||
|
new: &ChainConfig{HomesteadBlock: nil}, |
||||||
|
head: 3, |
||||||
|
wantErr: &ConfigCompatError{ |
||||||
|
What: "Homestead fork block", |
||||||
|
StoredConfig: big.NewInt(0), |
||||||
|
NewConfig: nil, |
||||||
|
RewindTo: 0, |
||||||
|
}, |
||||||
|
}, |
||||||
|
{ |
||||||
|
stored: AllProtocolChanges, |
||||||
|
new: &ChainConfig{HomesteadBlock: big.NewInt(1)}, |
||||||
|
head: 3, |
||||||
|
wantErr: &ConfigCompatError{ |
||||||
|
What: "Homestead fork block", |
||||||
|
StoredConfig: big.NewInt(0), |
||||||
|
NewConfig: big.NewInt(1), |
||||||
|
RewindTo: 0, |
||||||
|
}, |
||||||
|
}, |
||||||
|
{ |
||||||
|
stored: &ChainConfig{HomesteadBlock: big.NewInt(30), EIP150Block: big.NewInt(10)}, |
||||||
|
new: &ChainConfig{HomesteadBlock: big.NewInt(25), EIP150Block: big.NewInt(20)}, |
||||||
|
head: 25, |
||||||
|
wantErr: &ConfigCompatError{ |
||||||
|
What: "EIP150 fork block", |
||||||
|
StoredConfig: big.NewInt(10), |
||||||
|
NewConfig: big.NewInt(20), |
||||||
|
RewindTo: 9, |
||||||
|
}, |
||||||
|
}, |
||||||
|
} |
||||||
|
|
||||||
|
for _, test := range tests { |
||||||
|
err := test.stored.CheckCompatible(test.new, test.head) |
||||||
|
if !reflect.DeepEqual(err, test.wantErr) { |
||||||
|
t.Errorf("error mismatch:\nstored: %v\nnew: %v\nhead: %v\nerr: %v\nwant: %v", test.stored, test.new, test.head, err, test.wantErr) |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
Loading…
Reference in new issue