feat: upgrade handler for upgrade 8

golang/cosmos/app/app.go

@@ -19,6 +19,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/server/config"
 	servertypes "github.com/cosmos/cosmos-sdk/server/types"
 	"github.com/cosmos/cosmos-sdk/simapp"
+	store "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 	"github.com/cosmos/cosmos-sdk/version"
@@ -727,7 +728,28 @@ func NewAgoricApp(
 	app.SetBeginBlocker(app.BeginBlocker)
 	app.SetEndBlocker(app.EndBlocker)
 
-	// Upgrade handlers will go here
+	app.UpgradeKeeper.SetUpgradeHandler(
+		upgradeName,
+		func(ctx sdk.Context, plan upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
+			return vm, nil
+		},
+	)
+
+	// REVIEWER - is this required?
+	upgradeInfo, err := app.UpgradeKeeper.ReadUpgradeInfoFromDisk()
+	if err != nil {
+		panic(fmt.Sprintf("failed to read upgrade info from disk %s", err))
+	}
+
+	if upgradeInfo.Name == upgradeName && !app.UpgradeKeeper.IsSkipHeight(upgradeInfo.Height) {
+		storeUpgrades := store.StoreUpgrades{
+			Added: []string{icahosttypes.StoreKey},
+		}
+
+		// configure store loader that checks if version == upgradeHeight and applies store upgrades
+		app.SetStoreLoader(upgradetypes.UpgradeStoreLoader(upgradeInfo.Height, &storeUpgrades))
+	}
+	// End uncertain code
 
 	if loadLatest {
 		if err := app.LoadLatestVersion(); err != nil {

golang/cosmos/app/const.go

@@ -0,0 +1,5 @@
+package gaia
+
+const (
+	upgradeName = "agoric-upgrade-8"
+)