container, genesis: add functional options for genesis creation
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5a06bddfb0
commit
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@ -278,7 +278,11 @@ func (bc *blockchain) setupGenesis(addrs []common.Address) {
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if err != nil {
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log.Fatal("Failed to create setup dir", err)
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}
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err = genesis.Save(setupDir, genesis.New(addrs))
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err = genesis.Save(setupDir,
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genesis.New(
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genesis.Validators(addrs...),
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),
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)
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if err != nil {
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log.Fatal("Failed to save genesis", err)
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}
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@ -19,19 +19,14 @@ package genesis
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import (
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"encoding/json"
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"io/ioutil"
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"log"
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"math/big"
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"path/filepath"
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"time"
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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/consensus/istanbul"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/params"
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"github.com/getamis/istanbul-tools/cmd/istanbul/extradata"
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)
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const (
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@ -40,13 +35,8 @@ const (
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InitDifficulty = 1
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)
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func New(addrs []common.Address) *core.Genesis {
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extraData, err := extradata.Encode("0x00", addrs)
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if err != nil {
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log.Fatalf("Failed to generate genesis, err:%s", err)
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}
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return &core.Genesis{
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func New(options ...Option) *core.Genesis {
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genesis := &core.Genesis{
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Timestamp: uint64(time.Now().Unix()),
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GasLimit: InitGasLimit,
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Difficulty: big.NewInt(InitDifficulty),
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@ -61,9 +51,14 @@ func New(addrs []common.Address) *core.Genesis {
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Epoch: istanbul.DefaultConfig.Epoch,
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},
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},
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Mixhash: types.IstanbulDigest,
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ExtraData: hexutil.MustDecode(extraData),
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Mixhash: types.IstanbulDigest,
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}
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for _, opt := range options {
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opt(genesis)
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}
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return genesis
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}
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func Save(dataDir string, genesis *core.Genesis) error {
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@ -0,0 +1,45 @@
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// Copyright 2017 AMIS Technologies
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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 genesis
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import (
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"log"
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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/core"
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"github.com/getamis/istanbul-tools/cmd/istanbul/extradata"
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)
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type Option func(*core.Genesis)
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func Validators(addrs ...common.Address) Option {
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return func(genesis *core.Genesis) {
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extraData, err := extradata.Encode("0x00", addrs[:])
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if err != nil {
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log.Fatalf("Failed to generate genesis, err:%s", err)
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}
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genesis.ExtraData = hexutil.MustDecode(extraData)
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}
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}
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func GasLimit(limit uint64) Option {
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return func(genesis *core.Genesis) {
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genesis.GasLimit = limit
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}
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}
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