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core, cmd/geth: improved recover functionality

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`geth recover` now accepts both hashes and numbers using "#" and no
longer requires the ethereum instance.
This commit is contained in:
Jeffrey Wilcke
2015-07-01 16:15:02 +02:00
parent bb418a43c1
commit 70d5d791cc
3 changed files with 133 additions and 87 deletions
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36
cmd/geth/main.go
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@ -37,7 +37,10 @@ import (
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/metrics"
@ -72,10 +75,13 @@ func init() {
{
Action: blockRecovery,
Name: "recover",
Usage: "attempts to recover a corrupted database by setting a new block head by number",
Usage: "attempts to recover a corrupted database by setting a new block by number or hash. See help recover.",
Description: `
The recover commands will attempt to read out the last
block based on that.
recover #number recovers by number
recover <hex> recovers by hash
`,
},
blocktestCommand,
@ -450,17 +456,33 @@ func unlockAccount(ctx *cli.Context, am *accounts.Manager, account string) (pass
}
func blockRecovery(ctx *cli.Context) {
num := ctx.Args().First()
if len(ctx.Args()) < 1 {
glog.Fatal("recover requires block number")
arg := ctx.Args().First()
if len(ctx.Args()) < 1 && len(arg) > 0 {
glog.Fatal("recover requires block number or hash")
}
cfg := utils.MakeEthConfig(ClientIdentifier, nodeNameVersion, ctx)
ethereum, err := eth.New(cfg)
blockDb, err := ethdb.NewLDBDatabase(filepath.Join(cfg.DataDir, "blockchain"))
if err != nil {
utils.Fatalf("%v", err)
glog.Fatalln("could not open db:", err)
}
ethereum.ChainManager().Recover(common.String2Big(num).Uint64())
var block *types.Block
if arg[0] == '#' {
block = core.GetBlockByNumber(blockDb, common.String2Big(arg[1:]).Uint64())
} else {
block = core.GetBlockByHash(blockDb, common.HexToHash(arg))
}
if block == nil {
glog.Fatalln("block not found. Recovery failed")
}
err = core.WriteHead(blockDb, block)
if err != nil {
glog.Fatalln("block write err", err)
}
glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash())
}
func startEth(ctx *cli.Context, eth *eth.Ethereum) {