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migrate.go
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migrate.go
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package main
import (
"fmt"
"time"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/tendermint/tendermint/types"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/server"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/version"
extypes "github.com/cosmos/cosmos-sdk/x/genutil"
)
const (
flagGenesisTime = "genesis-time"
flagChainID = "chain-id"
)
// MigrateGenesisCmd returns a command to execute genesis state migration.
func MigrateGenesisCmd(_ *server.Context, cdc *codec.Codec) *cobra.Command {
cmd := &cobra.Command{
Use: "migrate [genesis-file]",
Short: "Migrate genesis",
Long: fmt.Sprintf(`Migrate the source genesis into the target version and print to STDOUT.
Example:
$ %s migrate /path/to/genesis.json --chain-id=shentu-incentivized-2 --genesis-time=2020-07-24T17:00:00Z
`, version.ServerName),
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
importGenesis := args[0]
genDoc, err := types.GenesisDocFromFile(importGenesis)
if err != nil {
return errors.Wrapf(err, "failed to read genesis document from file %s", importGenesis)
}
var initialState extypes.AppMap
if err := cdc.UnmarshalJSON(genDoc.AppState, &initialState); err != nil {
return errors.Wrap(err, "failed to JSON unmarshal initial genesis state")
}
genesisTime := cmd.Flag(flagGenesisTime).Value.String()
if genesisTime != "" {
var t time.Time
err := t.UnmarshalText([]byte(genesisTime))
if err != nil {
return errors.Wrap(err, "failed to unmarshal genesis time")
}
genDoc.GenesisTime = t
}
chainID := cmd.Flag(flagChainID).Value.String()
if chainID != "" {
genDoc.ChainID = chainID
}
bz, err := cdc.MarshalJSONIndent(genDoc, "", " ")
if err != nil {
return errors.Wrap(err, "failed to marshal genesis doc")
}
sortedBz, err := sdk.SortJSON(bz)
if err != nil {
return errors.Wrap(err, "failed to sort JSON genesis doc")
}
fmt.Println(string(sortedBz))
return nil
},
}
cmd.Flags().String(flagGenesisTime, "", "override genesis_time with this flag")
cmd.Flags().String(flagChainID, "", "override chain_id with this flag")
return cmd
}