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gentx.go
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gentx.go
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package init
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/context"
"github.com/cosmos/cosmos-sdk/client/keys"
"github.com/cosmos/cosmos-sdk/client/utils"
"github.com/cosmos/cosmos-sdk/cmd/gaia/app"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/server"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
authtxb "github.com/cosmos/cosmos-sdk/x/auth/client/txbuilder"
"github.com/cosmos/cosmos-sdk/x/stake/client/cli"
stakeTypes "github.com/cosmos/cosmos-sdk/x/stake/types"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/crypto"
tmcli "github.com/tendermint/tendermint/libs/cli"
"github.com/tendermint/tendermint/libs/common"
)
const (
defaultAmount = "100" + stakeTypes.DefaultBondDenom
defaultCommissionRate = "0.1"
defaultCommissionMaxRate = "0.2"
defaultCommissionMaxChangeRate = "0.01"
)
// GenTxCmd builds the gaiad gentx command.
// nolint: errcheck
func GenTxCmd(ctx *server.Context, cdc *codec.Codec) *cobra.Command {
cmd := &cobra.Command{
Use: "gentx",
Short: "Generate a genesis tx carrying a self delegation",
Long: fmt.Sprintf(`This command is an alias of the 'gaiad tx create-validator' command'.
It creates a genesis piece carrying a self delegation with the
following delegation and commission default parameters:
delegation amount: %s
commission rate: %s
commission max rate: %s
commission max change rate: %s
`, defaultAmount, defaultCommissionRate, defaultCommissionMaxRate, defaultCommissionMaxChangeRate),
RunE: func(cmd *cobra.Command, args []string) error {
config := ctx.Config
config.SetRoot(viper.GetString(tmcli.HomeFlag))
nodeID, valPubKey, err := InitializeNodeValidatorFiles(ctx.Config)
if err != nil {
return err
}
ip, err := server.ExternalIP()
if err != nil {
return err
}
genDoc, err := loadGenesisDoc(cdc, config.GenesisFile())
if err != nil {
return err
}
kb, err := keys.GetKeyBaseFromDir(viper.GetString(flagClientHome))
if err != nil {
return err
}
name := viper.GetString(client.FlagName)
if _, err := kb.Get(name); err != nil {
return err
}
// Read --pubkey, if empty take it from priv_validator.json
if valPubKeyString := viper.GetString(cli.FlagPubKey); valPubKeyString != "" {
valPubKey, err = sdk.GetConsPubKeyBech32(valPubKeyString)
if err != nil {
return err
}
}
// Run gaiad tx create-validator
prepareFlagsForTxCreateValidator(config, nodeID, ip, genDoc.ChainID, valPubKey)
txBldr := authtxb.NewTxBuilderFromCLI().WithCodec(cdc)
cliCtx := context.NewCLIContext().WithCodec(cdc)
cliCtx, txBldr, msg, err := cli.BuildCreateValidatorMsg(cliCtx, txBldr)
if err != nil {
return err
}
// write the unsigned transaction to the buffer
w := bytes.NewBuffer([]byte{})
if err := utils.PrintUnsignedStdTx(w, txBldr, cliCtx, []sdk.Msg{msg}, true); err != nil {
return err
}
// read the transaction
stdTx, err := readUnsignedGenTxFile(cdc, w)
if err != nil {
return err
}
// sign the transaction and write it to the output file
signedTx, err := utils.SignStdTx(txBldr, cliCtx, name, stdTx, false, true)
if err != nil {
return err
}
outputDocument, err := makeOutputFilepath(config.RootDir, nodeID)
if err != nil {
return err
}
if err := writeSignedGenTx(cdc, outputDocument, signedTx); err != nil {
return err
}
fmt.Fprintf(os.Stderr, "Genesis transaction written to %q\n", outputDocument)
return nil
},
}
cmd.Flags().String(tmcli.HomeFlag, app.DefaultNodeHome, "node's home directory")
cmd.Flags().String(flagClientHome, app.DefaultCLIHome, "client's home directory")
cmd.Flags().String(client.FlagName, "", "name of private key with which to sign the gentx")
cmd.Flags().AddFlagSet(cli.FsCommissionCreate)
cmd.Flags().AddFlagSet(cli.FsAmount)
cmd.Flags().AddFlagSet(cli.FsPk)
cmd.MarkFlagRequired(client.FlagName)
return cmd
}
func prepareFlagsForTxCreateValidator(config *cfg.Config, nodeID, ip, chainID string,
valPubKey crypto.PubKey) {
viper.Set(tmcli.HomeFlag, viper.GetString(flagClientHome)) // --home
viper.Set(client.FlagChainID, chainID)
viper.Set(client.FlagFrom, viper.GetString(client.FlagName)) // --from
viper.Set(cli.FlagNodeID, nodeID) // --node-id
viper.Set(cli.FlagIP, ip) // --ip
viper.Set(cli.FlagPubKey, sdk.MustBech32ifyConsPub(valPubKey)) // --pubkey
viper.Set(cli.FlagGenesisFormat, true) // --genesis-format
viper.Set(cli.FlagMoniker, config.Moniker) // --moniker
if config.Moniker == "" {
viper.Set(cli.FlagMoniker, viper.GetString(client.FlagName))
}
if viper.GetString(cli.FlagAmount) == "" {
viper.Set(cli.FlagAmount, defaultAmount)
}
if viper.GetString(cli.FlagCommissionRate) == "" {
viper.Set(cli.FlagCommissionRate, defaultCommissionRate)
}
if viper.GetString(cli.FlagCommissionMaxRate) == "" {
viper.Set(cli.FlagCommissionMaxRate, defaultCommissionMaxRate)
}
if viper.GetString(cli.FlagCommissionMaxChangeRate) == "" {
viper.Set(cli.FlagCommissionMaxChangeRate, defaultCommissionMaxChangeRate)
}
}
func makeOutputFilepath(rootDir, nodeID string) (string, error) {
writePath := filepath.Join(rootDir, "config", "gentx")
if err := common.EnsureDir(writePath, 0700); err != nil {
return "", err
}
return filepath.Join(writePath, fmt.Sprintf("gentx-%v.json", nodeID)), nil
}
func readUnsignedGenTxFile(cdc *codec.Codec, r io.Reader) (auth.StdTx, error) {
var stdTx auth.StdTx
bytes, err := ioutil.ReadAll(r)
if err != nil {
return stdTx, err
}
err = cdc.UnmarshalJSON(bytes, &stdTx)
return stdTx, err
}
// nolint: errcheck
func writeSignedGenTx(cdc *codec.Codec, outputDocument string, tx auth.StdTx) error {
outputFile, err := os.OpenFile(outputDocument, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
if err != nil {
return err
}
defer outputFile.Close()
json, err := cdc.MarshalJSON(tx)
if err != nil {
return err
}
_, err = fmt.Fprintf(outputFile, "%s\n", json)
return err
}