cmd, core, eth, common: genesis preparation

Implemented the --genesis flag thru which we can set a custom genesis
block, including the official Ethereum genesis block.

3 files changed, 12 insertions, 4 deletions

diff --git a/cmd/geth/js_test.go b/cmd/geth/js_test.go
index db2c5ca03..ffd164d27 100644
--- a/cmd/geth/js_test.go
+++ b/cmd/geth/js_test.go
@@ -37,6 +37,7 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rpc/codec"
 	"github.com/ethereum/go-ethereum/rpc/comms"
 )
@@ -89,9 +90,9 @@ func testREPL(t *testing.T, config func(*eth.Config)) (string, *testjethre, *eth
 		t.Fatal(err)
 	}
 
-	// set up mock genesis with balance on the testAddress
-	core.GenesisAccounts = []byte(testGenesis)
+	db, _ := ethdb.NewMemDatabase()
 
+	core.WriteGenesisBlockForTesting(db, common.HexToAddress(testAddress), common.String2Big(testBalance))
 	ks := crypto.NewKeyStorePlain(filepath.Join(tmp, "keystore"))
 	am := accounts.NewManager(ks)
 	conf := &eth.Config{
@@ -102,6 +103,7 @@ func testREPL(t *testing.T, config func(*eth.Config)) (string, *testjethre, *eth
 		Name:           "test",
 		SolcPath:       testSolcPath,
 		PowTest:        true,
+		NewDB:          func(path string) (common.Database, error) { return db, nil },
 	}
 	if config != nil {
 		config(conf)
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 51a0defaa..6acdff9ad 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -277,6 +277,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.UnlockedAccountFlag,
 		utils.PasswordFileFlag,
 		utils.GenesisNonceFlag,
+		utils.GenesisFileFlag,
 		utils.BootnodesFlag,
 		utils.DataDirFlag,
 		utils.BlockchainVersionFlag,
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 903c97e71..73bdb935a 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -114,6 +114,10 @@ var (
 		Usage: "Sets the genesis nonce",
 		Value: 42,
 	}
+	GenesisFileFlag = cli.StringFlag{
+		Name:  "genesis",
+		Usage: "Inserts/Overwrites the genesis block (json format)",
+	}
 	IdentityFlag = cli.StringFlag{
 		Name:  "identity",
 		Usage: "Custom node name",
@@ -378,6 +382,7 @@ func MakeEthConfig(clientID, version string, ctx *cli.Context) *eth.Config {
 		Name:                    common.MakeName(clientID, version),
 		DataDir:                 ctx.GlobalString(DataDirFlag.Name),
 		GenesisNonce:            ctx.GlobalInt(GenesisNonceFlag.Name),
+		GenesisFile:             ctx.GlobalString(GenesisFileFlag.Name),
 		BlockChainVersion:       ctx.GlobalInt(BlockchainVersionFlag.Name),
 		SkipBcVersionCheck:      false,
 		NetworkId:               ctx.GlobalInt(NetworkIdFlag.Name),
@@ -434,8 +439,8 @@ func MakeChain(ctx *cli.Context) (chain *core.ChainManager, blockDB, stateDB, ex
 
 	eventMux := new(event.TypeMux)
 	pow := ethash.New()
-	genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
-	chain, err = core.NewChainManager(genesis, blockDB, stateDB, extraDB, pow, eventMux)
+	//genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
+	chain, err = core.NewChainManager(blockDB, stateDB, extraDB, pow, eventMux)
 	if err != nil {
 		Fatalf("Could not start chainmanager: %v", err)
 	}