Пример #1
0
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))
}
Пример #2
0
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")
	}
}