added debug API

5 files changed, 270 insertions, 1 deletions

diff --git a/rpc/api/api.go b/rpc/api/api.go
index e4f0e7446..067a4d4e8 100644
--- a/rpc/api/api.go
+++ b/rpc/api/api.go
@@ -4,9 +4,10 @@ import "github.com/ethereum/go-ethereum/rpc/shared"
 
 const (
 	// List with all API's which are offered over the IPC interface by default
-	DefaultIpcApis = "eth,miner,net,web3"
+	DefaultIpcApis = "debug,eth,miner,net,web3"
 
 	EthApiName    = "eth"
+	DebugApiName  = "debug"
 	MergedApiName = "merged"
 	MinerApiName  = "miner"
 	NetApiName    = "net"
diff --git a/rpc/api/debug.go b/rpc/api/debug.go
new file mode 100644
index 000000000..26f43fe74
--- /dev/null
+++ b/rpc/api/debug.go
@@ -0,0 +1,169 @@
+package api
+
+import (
+	"fmt"
+
+	"github.com/ethereum/ethash"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/ethereum/go-ethereum/rpc/codec"
+	"github.com/ethereum/go-ethereum/rpc/shared"
+	"github.com/ethereum/go-ethereum/xeth"
+)
+
+const (
+	DebugVersion = "1.0.0"
+)
+
+var (
+	// mapping between methods and handlers
+	DebugMapping = map[string]debughandler{
+		"debug_dumpBlock":    (*DebugApi).DumpBlock,
+		"debug_getBlockRlp":  (*DebugApi).GetBlockRlp,
+		"debug_printBlock":   (*DebugApi).PrintBlock,
+		"debug_processBlock": (*DebugApi).ProcessBlock,
+		"debug_seedHash":     (*DebugApi).SeedHash,
+		"debug_setHead":      (*DebugApi).SetHead,
+	}
+)
+
+// debug callback handler
+type debughandler func(*DebugApi, *shared.Request) (interface{}, error)
+
+// admin api provider
+type DebugApi struct {
+	xeth     *xeth.XEth
+	ethereum *eth.Ethereum
+	methods  map[string]debughandler
+	codec    codec.ApiCoder
+}
+
+// create a new debug api instance
+func NewDebugApi(xeth *xeth.XEth, ethereum *eth.Ethereum, coder codec.Codec) *DebugApi {
+	return &DebugApi{
+		xeth:     xeth,
+		ethereum: ethereum,
+		methods:  DebugMapping,
+		codec:    coder.New(nil),
+	}
+}
+
+// collection with supported methods
+func (self *DebugApi) Methods() []string {
+	methods := make([]string, len(self.methods))
+	i := 0
+	for k := range self.methods {
+		methods[i] = k
+		i++
+	}
+	return methods
+}
+
+// Execute given request
+func (self *DebugApi) Execute(req *shared.Request) (interface{}, error) {
+	if callback, ok := self.methods[req.Method]; ok {
+		return callback(self, req)
+	}
+
+	return nil, &shared.NotImplementedError{req.Method}
+}
+
+func (self *DebugApi) Name() string {
+	return DebugApiName
+}
+
+func (self *DebugApi) PrintBlock(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	block := self.xeth.EthBlockByNumber(args.BlockNumber)
+	return fmt.Sprintf("%s", block), nil
+}
+
+func (self *DebugApi) DumpBlock(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	block := self.xeth.EthBlockByNumber(args.BlockNumber)
+	if block == nil {
+		return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
+	}
+
+	stateDb := state.New(block.Root(), self.ethereum.StateDb())
+	if stateDb == nil {
+		return nil, nil
+	}
+
+	return stateDb.Dump(), nil
+}
+
+func (self *DebugApi) GetBlockRlp(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	block := self.xeth.EthBlockByNumber(args.BlockNumber)
+	if block == nil {
+		return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
+	}
+	encoded, err := rlp.EncodeToBytes(block)
+	return fmt.Sprintf("%x", encoded), err
+}
+
+func (self *DebugApi) SetHead(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	block := self.xeth.EthBlockByNumber(args.BlockNumber)
+	if block == nil {
+		return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
+	}
+
+	self.ethereum.ChainManager().SetHead(block)
+
+	return nil, nil
+}
+
+func (self *DebugApi) ProcessBlock(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	block := self.xeth.EthBlockByNumber(args.BlockNumber)
+	if block == nil {
+		return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
+	}
+
+	old := vm.Debug
+	defer func() { vm.Debug = old }()
+	vm.Debug = true
+
+	_, err := self.ethereum.BlockProcessor().RetryProcess(block)
+	if err == nil {
+		return true, nil
+	}
+	return false, err
+}
+
+func (self *DebugApi) SeedHash(req *shared.Request) (interface{}, error) {
+	args := new(BlockNumArg)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, shared.NewDecodeParamError(err.Error())
+	}
+
+	if hash, err := ethash.GetSeedHash(uint64(args.BlockNumber)); err == nil {
+		return fmt.Sprintf("0x%x", hash), nil
+	} else {
+		return nil, err
+	}
+}
diff --git a/rpc/api/debug_args.go b/rpc/api/debug_args.go
new file mode 100644
index 000000000..b9b5aa27e
--- /dev/null
+++ b/rpc/api/debug_args.go
@@ -0,0 +1,47 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/rpc/shared"
+)
+
+type WaitForBlockArgs struct {
+	MinHeight int
+	Timeout   int // in seconds
+}
+
+func (args *WaitForBlockArgs) UnmarshalJSON(b []byte) (err error) {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
+		return shared.NewDecodeParamError(err.Error())
+	}
+
+	if len(obj) > 2 {
+		return fmt.Errorf("waitForArgs needs 0, 1, 2 arguments")
+	}
+
+	// default values when not provided
+	args.MinHeight = -1
+	args.Timeout = -1
+
+	if len(obj) >= 1 {
+		var minHeight *big.Int
+		if minHeight, err = numString(obj[0]); err != nil {
+			return err
+		}
+		args.MinHeight = int(minHeight.Int64())
+	}
+
+	if len(obj) >= 2 {
+		timeout, err := numString(obj[1])
+		if err != nil {
+			return err
+		}
+		args.Timeout = int(timeout.Int64())
+	}
+
+	return nil
+}
diff --git a/rpc/api/debug_js.go b/rpc/api/debug_js.go
new file mode 100644
index 000000000..43c545b2a
--- /dev/null
+++ b/rpc/api/debug_js.go
@@ -0,0 +1,48 @@
+package api
+
+const Debug_JS = `
+web3.extend({
+	property: 'debug',
+	methods:
+	[
+		new web3.extend.Method({
+			name: 'printBlock',
+			call: 'debug_printBlock',
+			params: 1,
+			inputFormatter: [web3.extend.formatters.formatInputInt],
+			outputFormatter: web3.extend.formatters.formatOutputString
+		}),
+		new web3.extend.Method({
+			name: 'getBlockRlp',
+			call: 'debug_getBlockRlp',
+			params: 1,
+			inputFormatter: [web3.extend.formatters.formatInputInt],
+			outputFormatter: web3.extend.formatters.formatOutputString
+		}),
+		new web3.extend.Method({
+			name: 'setHead',
+			call: 'debug_setHead',
+			params: 1,
+			inputFormatter: [web3.extend.formatters.formatInputInt],
+			outputFormatter: web3.extend.formatters.formatOutputBool
+		}),
+		new web3.extend.Method({
+			name: 'processBlock',
+			call: 'debug_processBlock',
+			params: 1,
+			inputFormatter: [web3.extend.formatters.formatInputInt],
+			outputFormatter: function(obj) { return obj; }
+		}),
+		new web3.extend.Method({
+			name: 'seedHash',
+			call: 'debug_seedHash',
+			params: 1,
+			inputFormatter: [web3.extend.formatters.formatInputInt],
+			outputFormatter: web3.extend.formatters.formatOutputString
+		})
+	],
+	properties:
+	[
+	]
+});
+`
diff --git a/rpc/api/utils.go b/rpc/api/utils.go
index 173a880d4..6e6d5c7b0 100644
--- a/rpc/api/utils.go
+++ b/rpc/api/utils.go
@@ -21,6 +21,8 @@ func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.
 
 	for i, name := range names {
 		switch strings.ToLower(strings.TrimSpace(name)) {
+		case DebugApiName:
+			apis[i] = NewDebugApi(xeth, eth, codec)
 		case EthApiName:
 			apis[i] = NewEthApi(xeth, codec)
 		case MinerApiName:
@@ -39,6 +41,8 @@ func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.
 
 func Javascript(name string) string {
 	switch strings.ToLower(strings.TrimSpace(name)) {
+	case DebugApiName:
+		return Debug_JS
 	case MinerApiName:
 		return Miner_JS
 	case NetApiName: