upgrades.go

package simapp

import (
	"context"

	"cosmossdk.io/core/appmodule"
	corestore "cosmossdk.io/core/store"
	bankv2types "cosmossdk.io/x/bank/v2/types"
	upgradetypes "cosmossdk.io/x/upgrade/types"
)

// UpgradeName defines the on-chain upgrade name for the sample SimApp upgrade
// from v0.52.x to v0.54.x
//
// NOTE: This upgrade defines a reference implementation of what an upgrade
// could look like when an application is migrating from Cosmos SDK version
// v0.52.x to v0.54.x.
const UpgradeName = "v052-to-v054"

func (app SimApp) RegisterUpgradeHandlers() {
	app.UpgradeKeeper.SetUpgradeHandler(
		UpgradeName,
		func(ctx context.Context, _ upgradetypes.Plan, fromVM appmodule.VersionMap) (appmodule.VersionMap, error) {
			return app.ModuleManager.RunMigrations(ctx, app.Configurator(), fromVM)
		},
	)

	upgradeInfo, err := app.UpgradeKeeper.ReadUpgradeInfoFromDisk()
	if err != nil {
		panic(err)
	}

	if upgradeInfo.Name == UpgradeName && !app.UpgradeKeeper.IsSkipHeight(upgradeInfo.Height) {
		storeUpgrades := corestore.StoreUpgrades{
			Added:   []string{bankv2types.StoreKey},
			Deleted: []string{},
		}

		// configure store loader that checks if version == upgradeHeight and applies store upgrades
		app.SetStoreLoader(upgradetypes.UpgradeStoreLoader(upgradeInfo.Height, &storeUpgrades))
	}
}