cmd/geth: add 'dumpgenesis' command (#20191)

Adds the 'geth dumpgenesis' command, which writes the configured
genesis in JSON format to stdout. This provides a way to generate the
data (structure and content) that can then be used with the 'geth init'
command.
This commit is contained in:
meowsbits 2020-02-04 04:49:13 -06:00 committed by GitHub
parent 058a4ac5f1
commit 711ed74e09
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2 changed files with 24 additions and 0 deletions

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@ -56,6 +56,18 @@ This is a destructive action and changes the network in which you will be
participating.
It expects the genesis file as argument.`,
}
dumpGenesisCommand = cli.Command{
Action: utils.MigrateFlags(dumpGenesis),
Name: "dumpgenesis",
Usage: "Dumps genesis block JSON configuration to stdout",
ArgsUsage: "",
Flags: []cli.Flag{
utils.DataDirFlag,
},
Category: "BLOCKCHAIN COMMANDS",
Description: `
The dumpgenesis command dumps the genesis block configuration in JSON format to stdout.`,
}
importCommand = cli.Command{
Action: utils.MigrateFlags(importChain),
@ -227,6 +239,17 @@ func initGenesis(ctx *cli.Context) error {
return nil
}
func dumpGenesis(ctx *cli.Context) error {
genesis := utils.MakeGenesis(ctx)
if genesis == nil {
genesis = core.DefaultGenesisBlock()
}
if err := json.NewEncoder(os.Stdout).Encode(genesis); err != nil {
utils.Fatalf("could not encode genesis")
}
return nil
}
func importChain(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")

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@ -205,6 +205,7 @@ func init() {
copydbCommand,
removedbCommand,
dumpCommand,
dumpGenesisCommand,
inspectCommand,
// See accountcmd.go:
accountCommand,