github.com/anthdm/go-ethereum@v1.8.4-0.20180412101906-60516c83b011/cmd/geth/misccmd.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // go-ethereum is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // go-ethereum is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"fmt"
    21  	"os"
    22  	"runtime"
    23  	"strconv"
    24  	"strings"
    25  
    26  	"github.com/ethereum/go-ethereum/cmd/utils"
    27  	"github.com/ethereum/go-ethereum/consensus/ethash"
    28  	"github.com/ethereum/go-ethereum/eth"
    29  	"github.com/ethereum/go-ethereum/params"
    30  	"gopkg.in/urfave/cli.v1"
    31  )
    32  
    33  var (
    34  	makecacheCommand = cli.Command{
    35  		Action:    utils.MigrateFlags(makecache),
    36  		Name:      "makecache",
    37  		Usage:     "Generate ethash verification cache (for testing)",
    38  		ArgsUsage: "<blockNum> <outputDir>",
    39  		Category:  "MISCELLANEOUS COMMANDS",
    40  		Description: `
    41  The makecache command generates an ethash cache in <outputDir>.
    42  
    43  This command exists to support the system testing project.
    44  Regular users do not need to execute it.
    45  `,
    46  	}
    47  	makedagCommand = cli.Command{
    48  		Action:    utils.MigrateFlags(makedag),
    49  		Name:      "makedag",
    50  		Usage:     "Generate ethash mining DAG (for testing)",
    51  		ArgsUsage: "<blockNum> <outputDir>",
    52  		Category:  "MISCELLANEOUS COMMANDS",
    53  		Description: `
    54  The makedag command generates an ethash DAG in <outputDir>.
    55  
    56  This command exists to support the system testing project.
    57  Regular users do not need to execute it.
    58  `,
    59  	}
    60  	versionCommand = cli.Command{
    61  		Action:    utils.MigrateFlags(version),
    62  		Name:      "version",
    63  		Usage:     "Print version numbers",
    64  		ArgsUsage: " ",
    65  		Category:  "MISCELLANEOUS COMMANDS",
    66  		Description: `
    67  The output of this command is supposed to be machine-readable.
    68  `,
    69  	}
    70  	licenseCommand = cli.Command{
    71  		Action:    utils.MigrateFlags(license),
    72  		Name:      "license",
    73  		Usage:     "Display license information",
    74  		ArgsUsage: " ",
    75  		Category:  "MISCELLANEOUS COMMANDS",
    76  	}
    77  )
    78  
    79  // makecache generates an ethash verification cache into the provided folder.
    80  func makecache(ctx *cli.Context) error {
    81  	args := ctx.Args()
    82  	if len(args) != 2 {
    83  		utils.Fatalf(`Usage: geth makecache <block number> <outputdir>`)
    84  	}
    85  	block, err := strconv.ParseUint(args[0], 0, 64)
    86  	if err != nil {
    87  		utils.Fatalf("Invalid block number: %v", err)
    88  	}
    89  	ethash.MakeCache(block, args[1])
    90  
    91  	return nil
    92  }
    93  
    94  // makedag generates an ethash mining DAG into the provided folder.
    95  func makedag(ctx *cli.Context) error {
    96  	args := ctx.Args()
    97  	if len(args) != 2 {
    98  		utils.Fatalf(`Usage: geth makedag <block number> <outputdir>`)
    99  	}
   100  	block, err := strconv.ParseUint(args[0], 0, 64)
   101  	if err != nil {
   102  		utils.Fatalf("Invalid block number: %v", err)
   103  	}
   104  	ethash.MakeDataset(block, args[1])
   105  
   106  	return nil
   107  }
   108  
   109  func version(ctx *cli.Context) error {
   110  	fmt.Println(strings.Title(clientIdentifier))
   111  	fmt.Println("Version:", params.Version)
   112  	if gitCommit != "" {
   113  		fmt.Println("Git Commit:", gitCommit)
   114  	}
   115  	fmt.Println("Architecture:", runtime.GOARCH)
   116  	fmt.Println("Protocol Versions:", eth.ProtocolVersions)
   117  	fmt.Println("Network Id:", eth.DefaultConfig.NetworkId)
   118  	fmt.Println("Go Version:", runtime.Version())
   119  	fmt.Println("Operating System:", runtime.GOOS)
   120  	fmt.Printf("GOPATH=%s\n", os.Getenv("GOPATH"))
   121  	fmt.Printf("GOROOT=%s\n", runtime.GOROOT())
   122  	return nil
   123  }
   124  
   125  func license(_ *cli.Context) error {
   126  	fmt.Println(`Geth is free software: you can redistribute it and/or modify
   127  it under the terms of the GNU General Public License as published by
   128  the Free Software Foundation, either version 3 of the License, or
   129  (at your option) any later version.
   130  
   131  Geth is distributed in the hope that it will be useful,
   132  but WITHOUT ANY WARRANTY; without even the implied warranty of
   133  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   134  GNU General Public License for more details.
   135  
   136  You should have received a copy of the GNU General Public License
   137  along with geth. If not, see <http://www.gnu.org/licenses/>.`)
   138  	return nil
   139  }