141 lines
4.2 KiB
Go
141 lines
4.2 KiB
Go
package cli
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import (
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"encoding/json"
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"fmt"
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"sort"
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"time"
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"github.com/spf13/cobra"
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"golang.org/x/exp/maps"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/cosmos/cosmos-sdk/client/flags"
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"github.com/cosmos/cosmos-sdk/version"
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v043 "github.com/cosmos/cosmos-sdk/x/genutil/migrations/v043"
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v046 "github.com/cosmos/cosmos-sdk/x/genutil/migrations/v046"
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v047 "github.com/cosmos/cosmos-sdk/x/genutil/migrations/v047"
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"github.com/cosmos/cosmos-sdk/x/genutil/types"
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)
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const flagGenesisTime = "genesis-time"
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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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"v0.43": v043.Migrate, // NOTE: v0.43, v0.44 and v0.45 are genesis compatible.
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"v0.46": v046.Migrate,
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"v0.47": v047.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 := maps.Keys(migrationMap)
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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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var err error
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target := args[0]
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importGenesis := args[1]
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appGenesis, err := types.AppGenesisFromFile(importGenesis)
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if err != nil {
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return err
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}
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if err := appGenesis.ValidateAndComplete(); err != nil {
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return fmt.Errorf("make sure that you have correctly migrated all CometBFT consensus params. Refer the UPGRADING.md (%s): %w", chainUpgradeGuide, err)
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}
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// Since some default values are valid values, we just print to
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// make sure the user didn't forget to update these values.
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if appGenesis.Consensus.Params.Evidence.MaxBytes == 0 {
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fmt.Printf("Warning: consensus.params.evidence.max_bytes is set to 0. If this is"+
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" deliberate, feel free to ignore this warning. If not, please have a look at the chain"+
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" upgrade guide at %s.\n", chainUpgradeGuide)
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}
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var initialState types.AppMap
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if err := json.Unmarshal(appGenesis.AppState, &initialState); err != nil {
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return fmt.Errorf("failed to JSON unmarshal initial genesis state: %w", err)
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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, clientCtx)
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appGenesis.AppState, err = json.Marshal(newGenState)
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if err != nil {
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return fmt.Errorf("failed to JSON marshal migrated genesis state: %w", err)
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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 fmt.Errorf("failed to unmarshal genesis time: %w", err)
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}
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appGenesis.GenesisTime = t
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}
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chainID, _ := cmd.Flags().GetString(flags.FlagChainID)
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if chainID != "" {
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appGenesis.ChainID = chainID
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}
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bz, err := json.Marshal(appGenesis)
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if err != nil {
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return fmt.Errorf("failed to marshal app genesis: %w", err)
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}
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outputDocument, _ := cmd.Flags().GetString(flags.FlagOutputDocument)
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if outputDocument == "" {
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cmd.Println(string(bz))
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return nil
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}
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if err = appGenesis.SaveAs(outputDocument); err != nil {
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return err
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}
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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(flags.FlagChainID, "", "Override chain_id with this flag")
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cmd.Flags().String(flags.FlagOutputDocument, "", "Exported state is written to the given file instead of STDOUT")
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return cmd
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}
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