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package main
import (
"fmt"
"os"
"path/filepath"
"strconv"
"time"
"github.com/codegangsta/cli"
"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/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/logger/glog"
)
var (
importCommand = cli.Command{
Action: importChain,
Name: "import",
Usage: `import a blockchain file`,
}
exportCommand = cli.Command{
Action: exportChain,
Name: "export",
Usage: `export blockchain into file`,
}
upgradedbCommand = cli.Command{
Action: upgradeDB,
Name: "upgradedb",
Usage: "upgrade chainblock database",
}
removedbCommand = cli.Command{
Action: removeDB,
Name: "removedb",
Usage: "Remove blockchain and state databases",
}
dumpCommand = cli.Command{
Action: dump,
Name: "dump",
Usage: `dump a specific block from storage`,
Description: `
The arguments are interpreted as block numbers or hashes.
Use "ethereum dump 0" to dump the genesis block.
`,
}
)
func importChain(ctx *cli.Context) {
if len(ctx.Args()) != 1 {
utils.Fatalf("This command requires an argument.")
}
chain, blockDB, stateDB, extraDB := utils.MakeChain(ctx)
start := time.Now()
err := utils.ImportChain(chain, ctx.Args().First())
flushAll(blockDB, stateDB, extraDB)
if err != nil {
utils.Fatalf("Import error: %v", err)
}
fmt.Printf("Import done in %v", time.Since(start))
}
func exportChain(ctx *cli.Context) {
if len(ctx.Args()) != 1 {
utils.Fatalf("This command requires an argument.")
}
chain, _, _, _ := utils.MakeChain(ctx)
start := time.Now()
if err := utils.ExportChain(chain, ctx.Args().First()); err != nil {
utils.Fatalf("Export error: %v\n", err)
}
fmt.Printf("Export done in %v", time.Since(start))
}
func removeDB(ctx *cli.Context) {
confirm, err := utils.PromptConfirm("Remove local databases?")
if err != nil {
utils.Fatalf("%v", err)
}
if confirm {
fmt.Println("Removing chain and state databases...")
start := time.Now()
os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "blockchain"))
os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "state"))
fmt.Printf("Removed in %v\n", time.Since(start))
} else {
fmt.Println("Operation aborted")
}
}
func upgradeDB(ctx *cli.Context) {
glog.Infoln("Upgrading blockchain database")
chain, blockDB, stateDB, extraDB := utils.MakeChain(ctx)
v, _ := blockDB.Get([]byte("BlockchainVersion"))
bcVersion := int(common.NewValue(v).Uint())
if bcVersion == 0 {
bcVersion = core.BlockChainVersion
}
// Export the current chain.
filename := fmt.Sprintf("blockchain_%d_%s.chain", bcVersion, time.Now().Format("20060102_150405"))
exportFile := filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), filename)
if err := utils.ExportChain(chain, exportFile); err != nil {
utils.Fatalf("Unable to export chain for reimport %s", err)
}
flushAll(blockDB, stateDB, extraDB)
os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "blockchain"))
os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "state"))
// Import the chain file.
chain, blockDB, stateDB, extraDB = utils.MakeChain(ctx)
blockDB.Put([]byte("BlockchainVersion"), common.NewValue(core.BlockChainVersion).Bytes())
err := utils.ImportChain(chain, exportFile)
flushAll(blockDB, stateDB, extraDB)
if err != nil {
utils.Fatalf("Import error %v (a backup is made in %s, use the import command to import it)", err, exportFile)
} else {
os.Remove(exportFile)
glog.Infoln("Import finished")
}
}
func dump(ctx *cli.Context) {
chain, _, stateDB, _ := utils.MakeChain(ctx)
for _, arg := range ctx.Args() {
var block *types.Block
if hashish(arg) {
block = chain.GetBlock(common.HexToHash(arg))
} else {
num, _ := strconv.Atoi(arg)
block = chain.GetBlockByNumber(uint64(num))
}
if block == nil {
fmt.Println("{}")
utils.Fatalf("block not found")
} else {
state := state.New(block.Root(), stateDB)
fmt.Printf("%s\n", state.Dump())
}
}
}
// hashish returns true for strings that look like hashes.
func hashish(x string) bool {
_, err := strconv.Atoi(x)
return err != nil
}
func flushAll(dbs ...common.Database) {
for _, db := range dbs {
db.Flush()
db.Close()
}
}
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