v3 update (#329)

Co-authored-by: ba1ciu <[email protected]>

chain/app/app.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/empowerchain/empowerchain/app/upgrades"
 	v2 "github.com/empowerchain/empowerchain/app/upgrades/v2"
+	v3 "github.com/empowerchain/empowerchain/app/upgrades/v3"
 
 	"github.com/empowerchain/empowerchain/app/params"
 	"github.com/gorilla/mux"
@@ -167,7 +168,7 @@ var (
 		ibctransfertypes.ModuleName:    {authtypes.Minter, authtypes.Burner},
 	}
 
-	Upgrades = []upgrades.Upgrade{v2.Upgrade}
+	Upgrades = []upgrades.Upgrade{v2.Upgrade, v3.Upgrade}
 )
 
 var (

chain/app/upgrades/v3/upgrade.go

@@ -0,0 +1,27 @@
+package v3
+
+import (
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/module"
+	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
+	"github.com/empowerchain/empowerchain/app/upgrades"
+)
+
+// UpgradeName defines the on-chain upgrade name for the EmpowerChain v3 upgrade.
+const UpgradeName = "v3"
+
+var Upgrade = upgrades.Upgrade{
+	UpgradeName:          UpgradeName,
+	CreateUpgradeHandler: CreateUpgradeHandler,
+	StoreUpgrades: storetypes.StoreUpgrades{
+		Added:   []string{},
+		Deleted: []string{},
+	},
+}
+
+func CreateUpgradeHandler(mm *module.Manager, configurator module.Configurator) upgradetypes.UpgradeHandler {
+	return func(ctx sdk.Context, plan upgradetypes.Plan, fromVM module.VersionMap) (module.VersionMap, error) {
+		return mm.RunMigrations(ctx, configurator, fromVM)
+	}
+}

chain/x/proofofexistence/keeper/migrations.go

@@ -19,3 +19,8 @@ func NewMigrator(keeper Keeper) Migrator {
 func (m Migrator) Migrate1to2(ctx sdk.Context) error {
 	return v2.MigrateStore(ctx, m.keeper.storeKey, m.keeper.cdc)
 }
+
+// Handler for no store changes
+func (m Migrator) NoOp(ctx sdk.Context) error {
+	return nil
+}

chain/x/proofofexistence/module.go

@@ -22,7 +22,7 @@ import (
 )
 
 // ConsensusVersion defines the current x/proofofexistence module consensus version.
-const ConsensusVersion = 3
+const ConsensusVersion = 4
 
 var (
 	_ module.AppModule      = AppModule{}
@@ -109,10 +109,13 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 
 	m := keeper.NewMigrator(am.keeper)
 	// For some reason this was hardcoded to 2 in the previous version https://github.com/empowerchain/empowerchain/blob/f7e68c0cd2901c9a60bd2ce00b43cf0db2c33f0e/chain/x/proofofexistence/module.go#L171
-	// When resetting all this before main net, get it back to 1
+	// TODO When resetting all this before main net, get it back to 1
 	if err := cfg.RegisterMigration(types.ModuleName, 2, m.Migrate1to2); err != nil {
 		panic(err)
 	}
+	if err := cfg.RegisterMigration(types.ModuleName, 3, m.NoOp); err != nil {
+		panic(err)
+	}
 }
 
 func (AppModule) ConsensusVersion() uint64 {