x{stake,slash,gov,distrib} In-place Store Migrations

simapp/app_test.go

@@ -11,8 +11,27 @@ import (
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	dbm "github.com/tendermint/tm-db"
 
+	"github.com/cosmos/cosmos-sdk/baseapp"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
+	"github.com/cosmos/cosmos-sdk/x/auth"
+	"github.com/cosmos/cosmos-sdk/x/auth/vesting"
+	"github.com/cosmos/cosmos-sdk/x/authz"
+	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
+	"github.com/cosmos/cosmos-sdk/x/capability"
+	"github.com/cosmos/cosmos-sdk/x/crisis"
+	"github.com/cosmos/cosmos-sdk/x/distribution"
+	"github.com/cosmos/cosmos-sdk/x/evidence"
+	feegrant "github.com/cosmos/cosmos-sdk/x/feegrant"
+	"github.com/cosmos/cosmos-sdk/x/genutil"
+	"github.com/cosmos/cosmos-sdk/x/gov"
+	transfer "github.com/cosmos/cosmos-sdk/x/ibc/applications/transfer"
+	ibc "github.com/cosmos/cosmos-sdk/x/ibc/core"
+	"github.com/cosmos/cosmos-sdk/x/mint"
+	"github.com/cosmos/cosmos-sdk/x/params"
+	"github.com/cosmos/cosmos-sdk/x/slashing"
+	"github.com/cosmos/cosmos-sdk/x/staking"
+	"github.com/cosmos/cosmos-sdk/x/upgrade"
 )
 
 func TestSimAppExportAndBlockedAddrs(t *testing.T) {
@@ -52,11 +71,33 @@ func TestGetMaccPerms(t *testing.T) {
 func TestRunMigrations(t *testing.T) {
 	db := dbm.NewMemDB()
 	encCfg := MakeTestEncodingConfig()
-	app := NewSimApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, map[int64]bool{}, DefaultNodeHome, 0, encCfg, EmptyAppOptions{})
-
-	// Create a new configurator for the purpose of this test.
+	logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout))
+	app := NewSimApp(logger, db, nil, true, map[int64]bool{}, DefaultNodeHome, 0, encCfg, EmptyAppOptions{})
+
+	// Create a new baseapp and configurator for the purpose of this test.
+	bApp := baseapp.NewBaseApp(appName, logger, db, encCfg.TxConfig.TxDecoder())
+	bApp.SetCommitMultiStoreTracer(nil)
+	bApp.SetInterfaceRegistry(encCfg.InterfaceRegistry)
+	app.BaseApp = bApp
 	app.configurator = module.NewConfigurator(app.MsgServiceRouter(), app.GRPCQueryRouter())
 
+	// We register all modules on the Configurator, except x/bank. x/bank will
+	// serve as the test subject on which we run the migration tests.
+	//
+	// The loop below is the same as calling `RegisterServices` on
+	// ModuleManager, except that we skip x/bank.
+	for _, module := range app.mm.Modules {
+		if module.Name() == banktypes.ModuleName {
+			continue
+		}
+
+		module.RegisterServices(app.configurator)
+	}
+
+	// Initialize the chain
+	app.InitChain(abci.RequestInitChain{})
+	app.Commit()
+
 	testCases := []struct {
 		name         string
 		moduleName   string
@@ -115,12 +156,30 @@ func TestRunMigrations(t *testing.T) {
 			}
 			require.NoError(t, err)
 
+			// Run migrations only for bank. That's why we put the initial
+			// version for bank as 1, and for all other modules, we put as
+			// their latest ConsensusVersion.
 			err = app.RunMigrations(
 				app.NewContext(true, tmproto.Header{Height: app.LastBlockHeight()}),
 				module.MigrationMap{
-					"auth": 1, "authz": 1, "bank": 1, "staking": 1, "mint": 1, "distribution": 1,
-					"slashing": 1, "gov": 1, "params": 1, "ibc": 1, "upgrade": 1, "vesting": 1,
-					"feegrant": 1, "transfer": 1, "evidence": 1, "crisis": 1, "genutil": 1, "capability": 1,
+					"bank":         1,
+					"auth":         auth.AppModule{}.ConsensusVersion(),
+					"authz":        authz.AppModule{}.ConsensusVersion(),
+					"staking":      staking.AppModule{}.ConsensusVersion(),
+					"mint":         mint.AppModule{}.ConsensusVersion(),
+					"distribution": distribution.AppModule{}.ConsensusVersion(),
+					"slashing":     slashing.AppModule{}.ConsensusVersion(),
+					"gov":          gov.AppModule{}.ConsensusVersion(),
+					"params":       params.AppModule{}.ConsensusVersion(),
+					"ibc":          ibc.AppModule{}.ConsensusVersion(),
+					"upgrade":      upgrade.AppModule{}.ConsensusVersion(),
+					"vesting":      vesting.AppModule{}.ConsensusVersion(),
+					"feegrant":     feegrant.AppModule{}.ConsensusVersion(),
+					"transfer":     transfer.AppModule{}.ConsensusVersion(),
+					"evidence":     evidence.AppModule{}.ConsensusVersion(),
+					"crisis":       crisis.AppModule{}.ConsensusVersion(),
+					"genutil":      genutil.AppModule{}.ConsensusVersion(),
+					"capability":   capability.AppModule{}.ConsensusVersion(),
 				},
 			)
 			if tc.expRunErr {

types/module/module.go

@@ -331,7 +331,7 @@ func (m *Manager) ExportGenesis(ctx sdk.Context, cdc codec.JSONMarshaler) map[st
 }
 
 // MigrationHandler is the migration function that each module registers.
-type MigrationHandler func(store sdk.Context) error
+type MigrationHandler func(sdk.Context) error
 
 // MigrationMap is a map of moduleName -> version, where version denotes the
 // version from which we should perform the migration for each module.

x/bank/keeper/migrations.go

@@ -5,16 +5,17 @@ import (
 	v042 "github.com/cosmos/cosmos-sdk/x/bank/legacy/v042"
 )
 
-// MigrationKeeper is an interface that the keeper implements for handling
-// in-place store migrations.
-type MigrationKeeper interface {
-	// Migrate1 migrates the store from version 1 to 2.
-	Migrate1(ctx sdk.Context) error
+// Migrator is a struct for handling in-place store migrations.
+type Migrator struct {
+	keeper BaseKeeper
 }
 
-var _ MigrationKeeper = (*BaseKeeper)(nil)
+// NewMigrator returns a new Migrator.
+func NewMigrator(keeper BaseKeeper) Migrator {
+	return Migrator{keeper: keeper}
+}
 
-// Migrate1 implements MigrationKeeper.Migrate1 method.
-func (keeper BaseKeeper) Migrate1(ctx sdk.Context) error {
-	return v042.MigrateStore(ctx, keeper.storeKey)
+// Migrate1 migrates from version 1 to 2.
+func (m Migrator) Migrate1(ctx sdk.Context) error {
+	return v042.MigrateStore(ctx, m.keeper.storeKey)
 }

x/bank/legacy/v040/keys.go

@@ -1,3 +1,5 @@
+// Package v040 is copy-pasted from:
+// https://github.com/cosmos/cosmos-sdk/blob/v0.41.0/x/bank/types/key.go
 package v040
 
 import (

x/bank/legacy/v042/store.go

@@ -5,6 +5,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	v040auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v040"
 	v040bank "github.com/cosmos/cosmos-sdk/x/bank/legacy/v040"
+	"github.com/cosmos/cosmos-sdk/x/bank/types"
 )
 
 // MigrateStore performs in-place store migrations from v0.40 to v0.42. The
@@ -27,7 +28,7 @@ func MigrateStore(ctx sdk.Context, storeKey sdk.StoreKey) error {
 	for ; oldStoreIter.Valid(); oldStoreIter.Next() {
 		addr := v040bank.AddressFromBalancesStore(oldStoreIter.Key())
 		denom := oldStoreIter.Key()[v040auth.AddrLen:]
-		newStoreKey := append(CreateAccountBalancesPrefix(addr), denom...)
+		newStoreKey := append(types.CreateAccountBalancesPrefix(addr), denom...)
 
 		// Set new key on store. Values don't change.
 		store.Set(newStoreKey, oldStoreIter.Value())

x/bank/legacy/v042/store_test.go

@@ -10,6 +10,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	v040bank "github.com/cosmos/cosmos-sdk/x/bank/legacy/v040"
 	v042bank "github.com/cosmos/cosmos-sdk/x/bank/legacy/v042"
+	"github.com/cosmos/cosmos-sdk/x/bank/types"
 )
 
 func TestStoreMigration(t *testing.T) {
@@ -27,7 +28,7 @@ func TestStoreMigration(t *testing.T) {
 	err := v042bank.MigrateStore(ctx, bankKey)
 	require.NoError(t, err)
 
-	newKey := append(v042bank.CreateAccountBalancesPrefix(addr), denom...)
+	newKey := append(types.CreateAccountBalancesPrefix(addr), denom...)
 	// -7 because we replaced "balances" with 0x02,
 	// +1 because we added length-prefix to address.
 	require.Equal(t, len(oldKey)-7+1, len(newKey))

x/bank/module.go

@@ -98,9 +98,9 @@ type AppModule struct {
 func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(am.keeper))
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
-	cfg.RegisterMigration(types.ModuleName, 0, func(ctx sdk.Context) error {
-		return am.keeper.(keeper.MigrationKeeper).Migrate1(ctx)
-	})
+
+	m := keeper.NewMigrator(am.keeper.(keeper.BaseKeeper))
+	cfg.RegisterMigration(types.ModuleName, 1, m.Migrate1)
 }
 
 // NewAppModule creates a new AppModule object

x/distribution/keeper/migrations.go

@@ -0,0 +1,21 @@
+package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	v042 "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v042"
+)
+
+// Migrator is a struct for handling in-place store migrations.
+type Migrator struct {
+	keeper Keeper
+}
+
+// NewMigrator returns a new Migrator.
+func NewMigrator(keeper Keeper) Migrator {
+	return Migrator{keeper: keeper}
+}
+
+// Migrate1 migrates from version 1 to 2.
+func (m Migrator) Migrate1(ctx sdk.Context) error {
+	return v042.MigrateStore(ctx, m.keeper.storeKey)
+}