aboutsummaryrefslogtreecommitdiffstats
path: root/cmd/geth/chaincmd.go
blob: 2e90001afa6b25b442462da8dbe2a1571d8336c2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
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`,
        Description: `
Requires a first argument of the file to write to.
Optional second and third arguments control the first and
last block to write. In this mode, the file will be appended
if already existing.
        `,
    }
    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())
    closeAll(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()

    var err error
    if len(ctx.Args()) < 3 {
        err = utils.ExportChain(chain, ctx.Args().First())
    } 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\n")
        }
        err = utils.ExportAppendChain(chain, ctx.Args().First(), uint64(first), uint64(last))
    }

    if 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)
    }
    closeAll(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)
    closeAll(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 closeAll(dbs ...common.Database) {
    for _, db := range dbs {
        db.Close()
    }
}