ad121f1498
Closes #2812 This PR adds the flag --for-zero-height to gaiad export, which runs several alterations to the application state to prepare for restarting a new chain in a consistent fashion. It also: * Moves Gaia's export code to cmd/gaia/app/export.go for cleaner separation. * Fixes an inconsistency where we treated the initChainer as happening at height -1 - it should now happen at height 0, since the first header sent by Tendermint has height 1. * Runs the runtime invariant checks on start (in initChainer) * Adds a few auxiliary functions to clear slashing periods * Removes the Height field from Delegation objects in x/stake, which was not used anywhere
90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package server
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import (
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"fmt"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"github.com/cosmos/cosmos-sdk/codec"
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tmtypes "github.com/tendermint/tendermint/types"
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"io/ioutil"
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"path"
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)
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const (
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flagHeight = "height"
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flagForZeroHeight = "for-zero-height"
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)
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// ExportCmd dumps app state to JSON.
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func ExportCmd(ctx *Context, cdc *codec.Codec, appExporter AppExporter) *cobra.Command {
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cmd := &cobra.Command{
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Use: "export",
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Short: "Export state to JSON",
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RunE: func(cmd *cobra.Command, args []string) error {
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home := viper.GetString("home")
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traceWriterFile := viper.GetString(flagTraceStore)
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emptyState, err := isEmptyState(home)
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if err != nil {
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return err
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}
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if emptyState {
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fmt.Println("WARNING: State is not initialized. Returning genesis file.")
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genesisFile := path.Join(home, "config", "genesis.json")
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genesis, err := ioutil.ReadFile(genesisFile)
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if err != nil {
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return err
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}
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fmt.Println(string(genesis))
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return nil
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}
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db, err := openDB(home)
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if err != nil {
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return err
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}
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traceWriter, err := openTraceWriter(traceWriterFile)
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if err != nil {
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return err
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}
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height := viper.GetInt64(flagHeight)
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forZeroHeight := viper.GetBool(flagForZeroHeight)
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appState, validators, err := appExporter(ctx.Logger, db, traceWriter, height, forZeroHeight)
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if err != nil {
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return errors.Errorf("error exporting state: %v\n", err)
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}
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doc, err := tmtypes.GenesisDocFromFile(ctx.Config.GenesisFile())
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if err != nil {
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return err
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}
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doc.AppState = appState
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doc.Validators = validators
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encoded, err := codec.MarshalJSONIndent(cdc, doc)
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if err != nil {
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return err
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}
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fmt.Println(string(encoded))
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return nil
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},
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}
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cmd.Flags().Int64(flagHeight, -1, "Export state from a particular height (-1 means latest height)")
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cmd.Flags().Bool(flagForZeroHeight, false, "Export state to start at height zero (perform preproccessing)")
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return cmd
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}
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func isEmptyState(home string) (bool, error) {
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files, err := ioutil.ReadDir(path.Join(home, "data"))
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if err != nil {
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return false, err
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}
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return len(files) == 0, nil
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}
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