From a23478c0be94e1e727a64d20341b8d6f98d7f0a0 Mon Sep 17 00:00:00 2001
From: Jeffrey Wilcke <geffobscura@gmail.com>
Date: Thu, 6 Aug 2015 19:57:39 +0200
Subject: core, eth, trie, xeth: merged state, chain, extra databases in one

---
 cmd/geth/chaincmd.go | 26 +++++++++++++-------------
 cmd/utils/flags.go   | 18 ++++++------------
 2 files changed, 19 insertions(+), 25 deletions(-)

(limited to 'cmd')

diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go
index 2d8eb15c2..876b8c6ba 100644
--- a/cmd/geth/chaincmd.go
+++ b/cmd/geth/chaincmd.go
@@ -74,10 +74,10 @@ func importChain(ctx *cli.Context) {
 	if len(ctx.Args()) != 1 {
 		utils.Fatalf("This command requires an argument.")
 	}
-	chain, blockDB, stateDB, extraDB := utils.MakeChain(ctx)
+	chain, chainDb := utils.MakeChain(ctx)
 	start := time.Now()
 	err := utils.ImportChain(chain, ctx.Args().First())
-	closeAll(blockDB, stateDB, extraDB)
+	chainDb.Close()
 	if err != nil {
 		utils.Fatalf("Import error: %v", err)
 	}
@@ -88,7 +88,7 @@ func exportChain(ctx *cli.Context) {
 	if len(ctx.Args()) < 1 {
 		utils.Fatalf("This command requires an argument.")
 	}
-	chain, _, _, _ := utils.MakeChain(ctx)
+	chain, _ := utils.MakeChain(ctx)
 	start := time.Now()
 
 	var err error
@@ -136,8 +136,8 @@ func removeDB(ctx *cli.Context) {
 func upgradeDB(ctx *cli.Context) {
 	glog.Infoln("Upgrading blockchain database")
 
-	chain, blockDB, stateDB, extraDB := utils.MakeChain(ctx)
-	v, _ := blockDB.Get([]byte("BlockchainVersion"))
+	chain, chainDb := utils.MakeChain(ctx)
+	v, _ := chainDb.Get([]byte("BlockchainVersion"))
 	bcVersion := int(common.NewValue(v).Uint())
 	if bcVersion == 0 {
 		bcVersion = core.BlockChainVersion
@@ -149,15 +149,14 @@ func upgradeDB(ctx *cli.Context) {
 	if err := utils.ExportChain(chain, exportFile); err != nil {
 		utils.Fatalf("Unable to export chain for reimport %s", err)
 	}
-	closeAll(blockDB, stateDB, extraDB)
-	os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "blockchain"))
-	os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "state"))
+	chainDb.Close()
+	os.RemoveAll(filepath.Join(ctx.GlobalString(utils.DataDirFlag.Name), "chaindata"))
 
 	// Import the chain file.
-	chain, blockDB, stateDB, extraDB = utils.MakeChain(ctx)
-	blockDB.Put([]byte("BlockchainVersion"), common.NewValue(core.BlockChainVersion).Bytes())
+	chain, chainDb = utils.MakeChain(ctx)
+	chainDb.Put([]byte("BlockchainVersion"), common.NewValue(core.BlockChainVersion).Bytes())
 	err := utils.ImportChain(chain, exportFile)
-	closeAll(blockDB, stateDB, extraDB)
+	chainDb.Close()
 	if err != nil {
 		utils.Fatalf("Import error %v (a backup is made in %s, use the import command to import it)", err, exportFile)
 	} else {
@@ -167,7 +166,7 @@ func upgradeDB(ctx *cli.Context) {
 }
 
 func dump(ctx *cli.Context) {
-	chain, _, stateDB, _ := utils.MakeChain(ctx)
+	chain, chainDb := utils.MakeChain(ctx)
 	for _, arg := range ctx.Args() {
 		var block *types.Block
 		if hashish(arg) {
@@ -180,10 +179,11 @@ func dump(ctx *cli.Context) {
 			fmt.Println("{}")
 			utils.Fatalf("block not found")
 		} else {
-			state := state.New(block.Root(), stateDB)
+			state := state.New(block.Root(), chainDb)
 			fmt.Printf("%s\n", state.Dump())
 		}
 	}
+	chainDb.Close()
 }
 
 // hashish returns true for strings that look like hashes.
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index cf969805d..e0ea7116d 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -435,23 +435,17 @@ func SetupLogger(ctx *cli.Context) {
 }
 
 // MakeChain creates a chain manager from set command line flags.
-func MakeChain(ctx *cli.Context) (chain *core.ChainManager, blockDB, stateDB, extraDB common.Database) {
+func MakeChain(ctx *cli.Context) (chain *core.ChainManager, chainDb common.Database) {
 	datadir := ctx.GlobalString(DataDirFlag.Name)
 	cache := ctx.GlobalInt(CacheFlag.Name)
 
 	var err error
-	if blockDB, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "blockchain"), cache); err != nil {
-		Fatalf("Could not open database: %v", err)
-	}
-	if stateDB, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "state"), cache); err != nil {
-		Fatalf("Could not open database: %v", err)
-	}
-	if extraDB, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "extra"), cache); err != nil {
+	if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache); err != nil {
 		Fatalf("Could not open database: %v", err)
 	}
 	if ctx.GlobalBool(OlympicFlag.Name) {
 		InitOlympic()
-		_, err := core.WriteTestNetGenesisBlock(stateDB, blockDB, 42)
+		_, err := core.WriteTestNetGenesisBlock(chainDb, 42)
 		if err != nil {
 			glog.Fatalln(err)
 		}
@@ -460,14 +454,14 @@ func MakeChain(ctx *cli.Context) (chain *core.ChainManager, blockDB, stateDB, ex
 	eventMux := new(event.TypeMux)
 	pow := ethash.New()
 	//genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
-	chain, err = core.NewChainManager(blockDB, stateDB, extraDB, pow, eventMux)
+	chain, err = core.NewChainManager(chainDb, pow, eventMux)
 	if err != nil {
 		Fatalf("Could not start chainmanager: %v", err)
 	}
 
-	proc := core.NewBlockProcessor(stateDB, extraDB, pow, chain, eventMux)
+	proc := core.NewBlockProcessor(chainDb, pow, chain, eventMux)
 	chain.SetProcessor(proc)
-	return chain, blockDB, stateDB, extraDB
+	return chain, chainDb
 }
 
 // MakeChain creates an account manager from set command line flags.
-- 
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