137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
package cli
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import (
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"fmt"
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"sort"
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"time"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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tmtypes "github.com/tendermint/tendermint/types"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/cosmos/cosmos-sdk/codec"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/version"
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v036 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v0_36"
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v038 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v0_38"
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v039 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v0_39"
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"github.com/cosmos/cosmos-sdk/x/genutil/types"
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)
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const (
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flagGenesisTime = "genesis-time"
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flagChainID = "chain-id"
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)
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// Allow applications to extend and modify the migration process.
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//
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// Ref: https://github.com/cosmos/cosmos-sdk/issues/5041
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var migrationMap = types.MigrationMap{
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"v0.36": v036.Migrate,
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"v0.38": v038.Migrate, // NOTE: v0.37 and v0.38 are genesis compatible
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"v0.39": v039.Migrate,
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}
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// GetMigrationCallback returns a MigrationCallback for a given version.
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func GetMigrationCallback(version string) types.MigrationCallback {
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return migrationMap[version]
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}
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// GetMigrationVersions get all migration version in a sorted slice.
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func GetMigrationVersions() []string {
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versions := make([]string, len(migrationMap))
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var i int
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for version := range migrationMap {
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versions[i] = version
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i++
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}
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sort.Strings(versions)
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return versions
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}
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// MigrateGenesisCmd returns a command to execute genesis state migration.
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func MigrateGenesisCmd() *cobra.Command {
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cmd := &cobra.Command{
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Use: "migrate [target-version] [genesis-file]",
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Short: "Migrate genesis to a specified target version",
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Long: fmt.Sprintf(`Migrate the source genesis into the target version and print to STDOUT.
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Example:
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$ %s migrate v0.36 /path/to/genesis.json --chain-id=cosmoshub-3 --genesis-time=2019-04-22T17:00:00Z
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`, version.AppName),
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Args: cobra.ExactArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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clientCtx := client.GetClientContextFromCmd(cmd)
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cdc := clientCtx.JSONMarshaler
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var err error
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target := args[0]
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importGenesis := args[1]
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genDoc, err := tmtypes.GenesisDocFromFile(importGenesis)
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if err != nil {
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return errors.Wrapf(err, "failed to read genesis document from file %s", importGenesis)
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}
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var initialState types.AppMap
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if err := cdc.UnmarshalJSON(genDoc.AppState, &initialState); err != nil {
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return errors.Wrap(err, "failed to JSON unmarshal initial genesis state")
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}
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migrationFunc := GetMigrationCallback(target)
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if migrationFunc == nil {
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return fmt.Errorf("unknown migration function for version: %s", target)
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}
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// TODO: handler error from migrationFunc call
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newGenState := migrationFunc(initialState)
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genDoc.AppState, err = cdc.MarshalJSON(newGenState)
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if err != nil {
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return errors.Wrap(err, "failed to JSON marshal migrated genesis state")
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}
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genesisTime, _ := cmd.Flags().GetString(flagGenesisTime)
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if genesisTime != "" {
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var t time.Time
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err := t.UnmarshalText([]byte(genesisTime))
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if err != nil {
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return errors.Wrap(err, "failed to unmarshal genesis time")
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}
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genDoc.GenesisTime = t
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}
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chainID, _ := cmd.Flags().GetString(flagChainID)
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if chainID != "" {
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genDoc.ChainID = chainID
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}
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bz, err := codec.MarshalJSONIndent(cdc, genDoc)
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if err != nil {
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return errors.Wrap(err, "failed to marshal genesis doc")
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}
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sortedBz, err := sdk.SortJSON(bz)
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if err != nil {
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return errors.Wrap(err, "failed to sort JSON genesis doc")
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}
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fmt.Println(string(sortedBz))
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return nil
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},
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}
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cmd.Flags().String(flagGenesisTime, "", "override genesis_time with this flag")
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cmd.Flags().String(flagChainID, "", "override chain_id with this flag")
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return cmd
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}
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