func exportChain(ctx *cli.Context) {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}
chain, _ := utils.MakeChain(ctx)
start := time.Now()
var err error
fp := ctx.Args().First()
if len(ctx.Args()) < 3 {
err = utils.ExportChain(chain, fp)
} else {
// This can be improved to allow for numbers larger than 9223372036854775807
first, ferr := strconv.ParseInt(ctx.Args().Get(1), 10, 64)
last, lerr := strconv.ParseInt(ctx.Args().Get(2), 10, 64)
if ferr != nil || lerr != nil {
utils.Fatalf("Export error in parsing parameters: block number not an integer\n")
}
if first < 0 || last < 0 {
utils.Fatalf("Export error: block number must be greater than 0\n")
}
err = utils.ExportAppendChain(chain, fp, uint64(first), uint64(last))
}
if err != nil {
utils.Fatalf("Export error: %v\n", err)
}
fmt.Printf("Export done in %v", time.Since(start))
}
func upgradeDB(ctx *cli.Context) {
glog.Infoln("Upgrading blockchain database")
chain, chainDb := utils.MakeChain(ctx)
v, _ := chainDb.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)
}
chainDb.Close()
os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "chaindata"))
// Import the chain file.
chain, chainDb = utils.MakeChain(ctx)
chainDb.Put([]byte("BlockchainVersion"), common.NewValue(core.BlockChainVersion).Bytes())
err := utils.ImportChain(chain, exportFile)
chainDb.Close()
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")
}
}