feat: update genesis_time upon export

server/export.go

@@ -3,13 +3,17 @@ package server
 // DONTCOVER
 
 import (
+	"errors"
 	"fmt"
-	"os"
+	"time"
 
 	"github.com/spf13/cobra"
 	tmjson "github.com/tendermint/tendermint/libs/json"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+	tmstore "github.com/tendermint/tendermint/store"
 	tmtypes "github.com/tendermint/tendermint/types"
+	tmdb "github.com/tendermint/tm-db"
+	"os"
 
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/server/types"
@@ -20,8 +24,25 @@ const (
 	FlagHeight           = "height"
 	FlagForZeroHeight    = "for-zero-height"
 	FlagJailAllowedAddrs = "jail-allowed-addrs"
+	RoundingInterval     = 5 * time.Minute
 )
 
+// GetLatestBlockHeaderFromDB returns the latest block header from the blockstore database
+func GetLatestBlockHeaderFromDB(blockStoreDB tmdb.DB) (*tmtypes.Header, error) {
+	// Load the blockstore
+	blockStore := tmstore.NewBlockStore(blockStoreDB)
+	defer blockStoreDB.Close()
+
+	// Get the latest block meta
+	latestHeight := blockStore.Height()
+	blockMeta := blockStore.LoadBlockMeta(latestHeight)
+	if blockMeta == nil {
+		return nil, errors.New("latest block metadata not found in blockstore")
+	}
+
+	return &blockMeta.Header, nil
+}
+
 // ExportCmd dumps app state to JSON.
 func ExportCmd(appExporter types.AppExporter, defaultNodeHome string) *cobra.Command {
 	cmd := &cobra.Command{
@@ -77,6 +98,12 @@ func ExportCmd(appExporter types.AppExporter, defaultNodeHome string) *cobra.Com
 				return err
 			}
 
+			latestBlockHeader, err := GetLatestBlockHeaderFromDB(db)
+			if err != nil {
+				return err
+			}
+			doc.GenesisTime = latestBlockHeader.Time.Round(RoundingInterval)
+
 			doc.AppState = exported.AppState
 			doc.Validators = exported.Validators
 			doc.InitialHeight = exported.Height