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Golang utils.MakeChain函數代碼示例

本文整理匯總了Golang中github.com/ethereum/go-ethereum/cmd/utils.MakeChain函數的典型用法代碼示例。如果您正苦於以下問題:Golang MakeChain函數的具體用法?Golang MakeChain怎麽用?Golang MakeChain使用的例子?那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。


在下文中一共展示了MakeChain函數的5個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: upgradeDB

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")
	}
}
開發者ID:nellyk,項目名稱:go-ethereum,代碼行數:31,代碼來源:chaincmd.go

示例2: exportChain

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))
}
開發者ID:nellyk,項目名稱:go-ethereum,代碼行數:29,代碼來源:chaincmd.go

示例3: importChain

func importChain(ctx *cli.Context) {
	if len(ctx.Args()) != 1 {
		utils.Fatalf("This command requires an argument.")
	}
	chain, chainDb := utils.MakeChain(ctx)
	start := time.Now()
	err := utils.ImportChain(chain, ctx.Args().First())
	chainDb.Close()
	if err != nil {
		utils.Fatalf("Import error: %v", err)
	}
	fmt.Printf("Import done in %v", time.Since(start))
}
開發者ID:nellyk,項目名稱:go-ethereum,代碼行數:13,代碼來源:chaincmd.go

示例4: dump

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())
		}
	}
}
開發者ID:nilcons-contrib,項目名稱:go-ethereum,代碼行數:19,代碼來源:chaincmd.go

示例5: dump

func dump(ctx *cli.Context) {
	chain, chainDb := 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, err := state.New(block.Root(), chainDb)
			if err != nil {
				utils.Fatalf("could not create new state: %v", err)
				return
			}
			fmt.Printf("%s\n", state.Dump())
		}
	}
	chainDb.Close()
}
開發者ID:FrankoCollective,項目名稱:go-ethereum,代碼行數:24,代碼來源:chaincmd.go


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