Mount every single store with its own DB

baseapp/baseapp.go

@@ -54,6 +54,7 @@ type BaseApp struct {
 var _ abci.Application = (*BaseApp)(nil)
 
 // Create and name new BaseApp
+// NOTE: The db is used to store the version number for now.
 func NewBaseApp(name string, logger log.Logger, db dbm.DB) *BaseApp {
 	return &BaseApp{
 		Logger: logger,
@@ -70,15 +71,16 @@ func (app *BaseApp) Name() string {
 }
 
 // Mount a store to the provided key in the BaseApp multistore
+// Broken until #532 is implemented.
 func (app *BaseApp) MountStoresIAVL(keys ...*sdk.KVStoreKey) {
 	for _, key := range keys {
-		app.MountStore(key, sdk.StoreTypeIAVL)
+		app.MountStore(key, sdk.StoreTypeIAVL, app.db)
 	}
 }
 
 // Mount a store to the provided key in the BaseApp multistore
-func (app *BaseApp) MountStore(key sdk.StoreKey, typ sdk.StoreType) {
+func (app *BaseApp) MountStore(key sdk.StoreKey, typ sdk.StoreType, db dbm.DB) {
-	app.cms.MountStoreWithDB(key, typ, app.db)
+	app.cms.MountStoreWithDB(key, typ, db)
 }
 
 // nolint - Set functions

examples/basecoin/app/app.go

@@ -2,6 +2,8 @@ package app
 
 import (
 	"encoding/json"
+	"os"
+	"path/filepath"
 
 	abci "github.com/tendermint/abci/types"
 	oldwire "github.com/tendermint/go-wire"
@@ -66,12 +68,30 @@ func NewBasecoinApp(logger log.Logger, db dbm.DB) *BasecoinApp {
 		AddRoute("ibc", ibc.NewHandler(ibcMapper, coinKeeper)).
 		AddRoute("staking", staking.NewHandler(stakeKeeper))
 
+	rootDir := os.ExpandEnv("$HOME/.basecoind")
+	dbMain, err := dbm.NewGoLevelDB("basecoin-main", filepath.Join(rootDir, "data"))
+	if err != nil {
+		cmn.Exit(err.Error())
+	}
+	dbIBC, err := dbm.NewGoLevelDB("basecoin-ibc", filepath.Join(rootDir, "data"))
+	if err != nil {
+		cmn.Exit(err.Error())
+	}
+	dbStaking, err := dbm.NewGoLevelDB("basecoin-staking", filepath.Join(rootDir, "data"))
+	if err != nil {
+		cmn.Exit(err.Error())
+	}
+
 	// initialize BaseApp
 	app.SetTxDecoder(app.txDecoder)
 	app.SetInitChainer(app.initChainer)
-	app.MountStoresIAVL(app.capKeyMainStore, app.capKeyIBCStore, app.capKeyStakingStore)
+	app.MountStore(app.capKeyMainStore, sdk.StoreTypeIAVL, dbMain)
+	app.MountStore(app.capKeyIBCStore, sdk.StoreTypeIAVL, dbIBC)
+	app.MountStore(app.capKeyStakingStore, sdk.StoreTypeIAVL, dbStaking)
+	// NOTE: Broken until #532 lands
+	//app.MountStoresIAVL(app.capKeyMainStore, app.capKeyIBCStore, app.capKeyStakingStore)
 	app.SetAnteHandler(auth.NewAnteHandler(app.accountMapper))
-	err := app.LoadLatestVersion(app.capKeyMainStore)
+	err = app.LoadLatestVersion(app.capKeyMainStore)
 	if err != nil {
 		cmn.Exit(err.Error())
 	}

examples/kvstore/main.go

@@ -30,7 +30,7 @@ func main() {
 	var baseApp = bam.NewBaseApp("kvstore", logger, db)
 
 	// Set mounts for BaseApp's MultiStore.
-	baseApp.MountStore(capKeyMainStore, sdk.StoreTypeIAVL)
+	baseApp.MountStoresIAVL(capKeyMainStore)
 
 	// Set Tx decoder
 	baseApp.SetTxDecoder(decodeTx)