State dumps

ethereum/flags.go

@@ -3,10 +3,11 @@ package main
 import (
 	"flag"
 	"fmt"
-	"github.com/ethereum/eth-go/ethlog"
 	"os"
 	"os/user"
 	"path"
+
+	"github.com/ethereum/eth-go/ethlog"
 )
 
 var Identifier string
@@ -31,6 +32,9 @@ var LogFile string
 var ConfigFile string
 var DebugFile string
 var LogLevel int
+var Dump bool
+var DumpHash string
+var DumpNumber int
 
 // flags specific to cli client
 var StartMining bool
@@ -71,6 +75,10 @@ func Init() {
 	flag.BoolVar(&DiffTool, "difftool", false, "creates output for diff'ing. Sets LogLevel=0")
 	flag.StringVar(&DiffType, "diff", "all", "sets the level of diff output [vm, all]. Has no effect if difftool=false")
 
+	flag.BoolVar(&Dump, "dump", false, "output the ethereum state in JSON format. Sub args [number, hash]")
+	flag.StringVar(&DumpHash, "hash", "", "specify arg in hex")
+	flag.IntVar(&DumpNumber, "number", -1, "specify arg in number")
+
 	flag.BoolVar(&StartMining, "mine", false, "start dagger mining")
 	flag.BoolVar(&StartJsConsole, "js", false, "launches javascript console")
 

ethereum/main.go

@@ -1,8 +1,11 @@
 package main
 
 import (
+	"fmt"
+	"os"
 	"runtime"
 
+	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethlog"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/go-ethereum/utils"
@@ -24,7 +27,7 @@ func main() {
 	Init() // parsing command line
 
 	// If the difftool option is selected ignore all other log output
-	if DiffTool {
+	if DiffTool || Dump {
 		LogLevel = 0
 	}
 
@@ -47,6 +50,32 @@ func main() {
 
 	ethereum := utils.NewEthereum(db, clientIdentity, keyManager, UseUPnP, OutboundPort, MaxPeer)
 
+	if Dump {
+		var block *ethchain.Block
+
+		if len(DumpHash) == 0 && DumpNumber == -1 {
+			block = ethereum.BlockChain().CurrentBlock
+		} else if len(DumpHash) > 0 {
+			block = ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(DumpHash))
+		} else {
+			block = ethereum.BlockChain().GetBlockByNumber(uint64(DumpNumber))
+		}
+
+		if block == nil {
+			fmt.Fprintln(os.Stderr, "block not found")
+
+			// We want to output valid JSON
+			fmt.Println("{}")
+
+			os.Exit(1)
+		}
+
+		// Leave the Println. This needs clean output for piping
+		fmt.Println(block.State().Dump())
+
+		os.Exit(0)
+	}
+
 	if ShowGenesis {
 		utils.ShowGenesis(ethereum)
 	}

ethereum/repl/javascript_runtime.go

@@ -2,6 +2,11 @@ package ethrepl
 
 import (
 	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+
 	"github.com/ethereum/eth-go"
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethlog"
@@ -11,10 +16,6 @@ import (
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/go-ethereum/utils"
 	"github.com/obscuren/otto"
-	"io/ioutil"
-	"os"
-	"path"
-	"path/filepath"
 )
 
 var jsrelogger = ethlog.NewLogger("JSRE")
@@ -147,12 +148,44 @@ func (self *JSRE) initStdFuncs() {
 	eth.Set("stopMining", self.stopMining)
 	eth.Set("startMining", self.startMining)
 	eth.Set("execBlock", self.execBlock)
+	eth.Set("dump", self.dump)
 }
 
 /*
  * The following methods are natively implemented javascript functions
  */
 
+func (self *JSRE) dump(call otto.FunctionCall) otto.Value {
+	var state *ethstate.State
+
+	if len(call.ArgumentList) > 0 {
+		var block *ethchain.Block
+		if call.Argument(0).IsNumber() {
+			num, _ := call.Argument(0).ToInteger()
+			block = self.ethereum.BlockChain().GetBlockByNumber(uint64(num))
+		} else if call.Argument(0).IsString() {
+			hash, _ := call.Argument(0).ToString()
+			block = self.ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(hash))
+		} else {
+			fmt.Println("invalid argument for dump. Either hex string or number")
+		}
+
+		if block == nil {
+			fmt.Println("block not found")
+
+			return otto.UndefinedValue()
+		}
+
+		state = block.State()
+	} else {
+		state = self.ethereum.StateManager().CurrentState()
+	}
+
+	fmt.Println(state.Dump())
+
+	return otto.UndefinedValue()
+}
+
 func (self *JSRE) stopMining(call otto.FunctionCall) otto.Value {
 	v, _ := self.vm.ToValue(utils.StopMining(self.ethereum))
 	return v