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Merge pull request #1193 from tgerring/hotbackup

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Improve export command
This commit is contained in:
Jeffrey Wilcke
2015-06-08 16:32:38 -07:00
parent 81ceac1b96 4ab0cedf42
commit 0f1cdfa53a
3 changed files with 55 additions and 5 deletions
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28
cmd/geth/chaincmd.go
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@ -26,6 +26,12 @@ var (
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,
@ -63,12 +69,30 @@ func importChain(ctx *cli.Context) {
}
func exportChain(ctx *cli.Context) {
if len(ctx.Args()) != 1 {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}
chain, _, _, _ := utils.MakeChain(ctx)
start := time.Now()
if err := utils.ExportChain(chain, ctx.Args().First()); err != nil {
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))