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authorobscuren <geffobscura@gmail.com>2014-10-21 19:24:48 +0800
committerobscuren <geffobscura@gmail.com>2014-10-21 19:24:48 +0800
commit10b252dd0517175117d8d4a8ef30b3689a10eda5 (patch)
tree50c151da01936eb169d4ee6c3a1a717dfd9aabb1
parent097ba56df59293f9225a8ecdc9e1c43a5ad891bb (diff)
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WIP RPC interface
-rw-r--r--rpc/json.go20
-rw-r--r--rpc/message.go14
-rw-r--r--rpc/packages.go311
-rw-r--r--rpc/server.go67
-rw-r--r--rpc/writer.go75
5 files changed, 487 insertions, 0 deletions
diff --git a/rpc/json.go b/rpc/json.go
new file mode 100644
index 000000000..e467f9a34
--- /dev/null
+++ b/rpc/json.go
@@ -0,0 +1,20 @@
+package rpc
+
+import (
+ "encoding/json"
+ "io"
+)
+
+type jsonWrapper struct{}
+
+func (self jsonWrapper) Send(writer io.Writer, v interface{}) (n int, err error) {
+ var payload []byte
+ payload, err = json.Marshal(v)
+ if err != nil {
+ return 0, err
+ }
+
+ return writer.Write(payload)
+}
+
+var JSON jsonWrapper
diff --git a/rpc/message.go b/rpc/message.go
new file mode 100644
index 000000000..0ee2fe77c
--- /dev/null
+++ b/rpc/message.go
@@ -0,0 +1,14 @@
+package rpc
+
+import "github.com/ethereum/eth-go/ethutil"
+
+type Message struct {
+ Call string `json:"call"`
+ Args []interface{} `json:"args"`
+ Id int `json:"_id"`
+ Data interface{} `json:"data"`
+}
+
+func (self *Message) Arguments() *ethutil.Value {
+ return ethutil.NewValue(self.Args)
+}
diff --git a/rpc/packages.go b/rpc/packages.go
new file mode 100644
index 000000000..d8dae003f
--- /dev/null
+++ b/rpc/packages.go
@@ -0,0 +1,311 @@
+package rpc
+
+import (
+ "encoding/json"
+ "errors"
+ "math/big"
+ "strings"
+
+ "github.com/ethereum/eth-go/ethpipe"
+ "github.com/ethereum/eth-go/ethutil"
+)
+
+type EthereumApi struct {
+ pipe *ethpipe.JSPipe
+}
+
+type JsonArgs interface {
+ requirements() error
+}
+
+type BlockResponse struct {
+ JsonResponse
+}
+type GetBlockArgs struct {
+ BlockNumber int
+ Hash string
+}
+
+type ErrorResponse struct {
+ Error bool `json:"error"`
+ ErrorText string `json:"errorText"`
+}
+
+type JsonResponse interface {
+}
+
+type SuccessRes struct {
+ Error bool `json:"error"`
+ Result JsonResponse `json:"result"`
+}
+
+func NewSuccessRes(object JsonResponse) string {
+ e := SuccessRes{Error: false, Result: object}
+ res, err := json.Marshal(e)
+ if err != nil {
+ // This should never happen
+ panic("Creating json error response failed, help")
+ }
+ success := string(res)
+ return success
+}
+
+func NewErrorResponse(msg string) error {
+ e := ErrorResponse{Error: true, ErrorText: msg}
+ res, err := json.Marshal(e)
+ if err != nil {
+ // This should never happen
+ panic("Creating json error response failed, help")
+ }
+ newErr := errors.New(string(res))
+ return newErr
+}
+
+func (b *GetBlockArgs) requirements() error {
+ if b.BlockNumber == 0 && b.Hash == "" {
+ return NewErrorResponse("GetBlock requires either a block 'number' or a block 'hash' as argument")
+ }
+ return nil
+}
+
+func (p *EthereumApi) GetBlock(args *GetBlockArgs, reply *string) error {
+ err := args.requirements()
+ if err != nil {
+ return err
+ }
+
+ block := p.pipe.BlockByHash(args.Hash)
+ *reply = NewSuccessRes(block)
+ return nil
+}
+
+type NewTxArgs struct {
+ Sec string
+ Recipient string
+ Value string
+ Gas string
+ GasPrice string
+ Init string
+ Body string
+}
+type TxResponse struct {
+ Hash string
+}
+
+func (a *NewTxArgs) requirements() error {
+ if a.Recipient == "" {
+ return NewErrorResponse("Transact requires a 'recipient' address as argument")
+ }
+ if a.Value == "" {
+ return NewErrorResponse("Transact requires a 'value' as argument")
+ }
+ if a.Gas == "" {
+ return NewErrorResponse("Transact requires a 'gas' value as argument")
+ }
+ if a.GasPrice == "" {
+ return NewErrorResponse("Transact requires a 'gasprice' value as argument")
+ }
+ return nil
+}
+
+func (a *NewTxArgs) requirementsContract() error {
+ if a.Value == "" {
+ return NewErrorResponse("Create requires a 'value' as argument")
+ }
+ if a.Gas == "" {
+ return NewErrorResponse("Create requires a 'gas' value as argument")
+ }
+ if a.GasPrice == "" {
+ return NewErrorResponse("Create requires a 'gasprice' value as argument")
+ }
+ if a.Body == "" {
+ return NewErrorResponse("Create requires a 'body' value as argument")
+ }
+ return nil
+}
+
+func (p *EthereumApi) Transact(args *NewTxArgs, reply *string) error {
+ err := args.requirements()
+ if err != nil {
+ return err
+ }
+ result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, args.Recipient, args.Value, args.Gas, args.GasPrice, args.Body)
+ *reply = NewSuccessRes(result)
+ return nil
+}
+
+func (p *EthereumApi) Create(args *NewTxArgs, reply *string) error {
+ err := args.requirementsContract()
+ if err != nil {
+ return err
+ }
+
+ result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, "", args.Value, args.Gas, args.GasPrice, args.Body)
+ *reply = NewSuccessRes(result)
+ return nil
+}
+
+type PushTxArgs struct {
+ Tx string
+}
+
+func (a *PushTxArgs) requirementsPushTx() error {
+ if a.Tx == "" {
+ return NewErrorResponse("PushTx requires a 'tx' as argument")
+ }
+ return nil
+}
+
+func (p *EthereumApi) PushTx(args *PushTxArgs, reply *string) error {
+ err := args.requirementsPushTx()
+ if err != nil {
+ return err
+ }
+ result, _ := p.pipe.PushTx(args.Tx)
+ *reply = NewSuccessRes(result)
+ return nil
+}
+
+func (p *EthereumApi) GetKey(args interface{}, reply *string) error {
+ *reply = NewSuccessRes(p.pipe.Key())
+ return nil
+}
+
+type GetStorageArgs struct {
+ Address string
+ Key string
+}
+
+func (a *GetStorageArgs) requirements() error {
+ if a.Address == "" {
+ return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
+ }
+ if a.Key == "" {
+ return NewErrorResponse("GetStorageAt requires an 'key' value as argument")
+ }
+ return nil
+}
+
+type GetStorageAtRes struct {
+ Key string `json:"key"`
+ Value string `json:"value"`
+ Address string `json:"address"`
+}
+
+func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *string) error {
+ err := args.requirements()
+ if err != nil {
+ return err
+ }
+
+ state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
+
+ var hx string
+ if strings.Index(args.Key, "0x") == 0 {
+ hx = string([]byte(args.Key)[2:])
+ } else {
+ // Convert the incoming string (which is a bigint) into hex
+ i, _ := new(big.Int).SetString(args.Key, 10)
+ hx = ethutil.Bytes2Hex(i.Bytes())
+ }
+ logger.Debugf("GetStorageAt(%s, %s)\n", args.Address, hx)
+ value := state.Storage(ethutil.Hex2Bytes(hx))
+ *reply = NewSuccessRes(GetStorageAtRes{Address: args.Address, Key: args.Key, Value: value.Str()})
+ return nil
+}
+
+type GetTxCountArgs struct {
+ Address string `json:"address"`
+}
+type GetTxCountRes struct {
+ Nonce int `json:"nonce"`
+}
+
+func (a *GetTxCountArgs) requirements() error {
+ if a.Address == "" {
+ return NewErrorResponse("GetTxCountAt requires an 'address' value as argument")
+ }
+ return nil
+}
+
+type GetPeerCountRes struct {
+ PeerCount int `json:"peerCount"`
+}
+
+func (p *EthereumApi) GetPeerCount(args *interface{}, reply *string) error {
+ *reply = NewSuccessRes(GetPeerCountRes{PeerCount: p.pipe.PeerCount()})
+ return nil
+}
+
+type GetListeningRes struct {
+ IsListening bool `json:"isListening"`
+}
+
+func (p *EthereumApi) GetIsListening(args *interface{}, reply *string) error {
+ *reply = NewSuccessRes(GetListeningRes{IsListening: p.pipe.IsListening()})
+ return nil
+}
+
+type GetCoinbaseRes struct {
+ Coinbase string `json:"coinbase"`
+}
+
+func (p *EthereumApi) GetCoinbase(args *interface{}, reply *string) error {
+ *reply = NewSuccessRes(GetCoinbaseRes{Coinbase: p.pipe.CoinBase()})
+ return nil
+}
+
+type GetMiningRes struct {
+ IsMining bool `json:"isMining"`
+}
+
+func (p *EthereumApi) GetIsMining(args *interface{}, reply *string) error {
+ *reply = NewSuccessRes(GetMiningRes{IsMining: p.pipe.IsMining()})
+ return nil
+}
+
+func (p *EthereumApi) GetTxCountAt(args *GetTxCountArgs, reply *string) error {
+ err := args.requirements()
+ if err != nil {
+ return err
+ }
+ state := p.pipe.TxCountAt(args.Address)
+ *reply = NewSuccessRes(GetTxCountRes{Nonce: state})
+ return nil
+}
+
+type GetBalanceArgs struct {
+ Address string
+}
+
+func (a *GetBalanceArgs) requirements() error {
+ if a.Address == "" {
+ return NewErrorResponse("GetBalanceAt requires an 'address' value as argument")
+ }
+ return nil
+}
+
+type BalanceRes struct {
+ Balance string `json:"balance"`
+ Address string `json:"address"`
+}
+
+func (p *EthereumApi) GetBalanceAt(args *GetBalanceArgs, reply *string) error {
+ err := args.requirements()
+ if err != nil {
+ return err
+ }
+ state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
+ *reply = NewSuccessRes(BalanceRes{Balance: state.Balance.String(), Address: args.Address})
+ return nil
+}
+
+type TestRes struct {
+ JsonResponse `json:"-"`
+ Answer int `json:"answer"`
+}
+
+func (p *EthereumApi) Test(args *GetBlockArgs, reply *string) error {
+ *reply = NewSuccessRes(TestRes{Answer: 15})
+ return nil
+}
diff --git a/rpc/server.go b/rpc/server.go
new file mode 100644
index 000000000..db12c747c
--- /dev/null
+++ b/rpc/server.go
@@ -0,0 +1,67 @@
+package rpc
+
+import (
+ "fmt"
+ "net"
+ "net/rpc"
+ "net/rpc/jsonrpc"
+
+ "github.com/ethereum/eth-go/ethlog"
+ "github.com/ethereum/eth-go/ethpipe"
+)
+
+var logger = ethlog.NewLogger("JSON")
+
+type JsonRpcServer struct {
+ quit chan bool
+ listener net.Listener
+ pipe *ethpipe.JSPipe
+}
+
+func (s *JsonRpcServer) exitHandler() {
+out:
+ for {
+ select {
+ case <-s.quit:
+ s.listener.Close()
+ break out
+ }
+ }
+
+ logger.Infoln("Shutdown JSON-RPC server")
+}
+
+func (s *JsonRpcServer) Stop() {
+ close(s.quit)
+}
+
+func (s *JsonRpcServer) Start() {
+ logger.Infoln("Starting JSON-RPC server")
+ go s.exitHandler()
+ rpc.Register(&EthereumApi{pipe: s.pipe})
+ rpc.HandleHTTP()
+
+ for {
+ conn, err := s.listener.Accept()
+ if err != nil {
+ logger.Infoln("Error starting JSON-RPC:", err)
+ break
+ }
+ logger.Debugln("Incoming request.")
+ go jsonrpc.ServeConn(conn)
+ }
+}
+
+func NewJsonRpcServer(pipe *ethpipe.JSPipe, port int) (*JsonRpcServer, error) {
+ sport := fmt.Sprintf(":%d", port)
+ l, err := net.Listen("tcp", sport)
+ if err != nil {
+ return nil, err
+ }
+
+ return &JsonRpcServer{
+ listener: l,
+ quit: make(chan bool),
+ pipe: pipe,
+ }, nil
+}
diff --git a/rpc/writer.go b/rpc/writer.go
new file mode 100644
index 000000000..4cc39f577
--- /dev/null
+++ b/rpc/writer.go
@@ -0,0 +1,75 @@
+package rpc
+
+/*
+func pack(id int, v ...interface{}) Message {
+ return Message{Data: v, Id: id}
+}
+
+func WriteOn(msg *Message, writer io.Writer) {
+ //msg := &Message{Seed: seed, Data: data}
+
+ switch msg.Call {
+ case "compile":
+ data := ethutil.NewValue(msg.Args)
+ bcode, err := ethutil.Compile(data.Get(0).Str(), false)
+ if err != nil {
+ JSON.Send(writer, pack(msg.Id, err.Error()))
+ }
+
+ code := ethutil.Bytes2Hex(bcode)
+
+ JSON.Send(writer, pack(msg.Id, code, nil))
+ case "block":
+ args := msg.Arguments()
+
+ block := pipe.BlockByNumber(int32(args.Get(0).Uint()))
+
+ JSON.Send(writer, pack(msg.Id, block))
+ case "transact":
+ if mp, ok := msg.Args[0].(map[string]interface{}); ok {
+ object := mapToTxParams(mp)
+ JSON.Send(
+ writer,
+ pack(msg.Id, args(pipe.Transact(object["from"], object["to"], object["value"], object["gas"], object["gasPrice"], object["data"]))),
+ )
+
+ }
+ case "coinbase":
+ JSON.Send(writer, pack(msg.Id, pipe.CoinBase(), msg.Seed))
+
+ case "listening":
+ JSON.Send(writer, pack(msg.Id, pipe.IsListening()))
+
+ case "mining":
+ JSON.Send(writer, pack(msg.Id, pipe.IsMining()))
+
+ case "peerCoint":
+ JSON.Send(writer, pack(msg.Id, pipe.PeerCount()))
+
+ case "countAt":
+ args := msg.Arguments()
+
+ JSON.Send(writer, pack(msg.Id, pipe.TxCountAt(args.Get(0).Str())))
+
+ case "codeAt":
+ args := msg.Arguments()
+
+ JSON.Send(writer, pack(msg.Id, len(pipe.CodeAt(args.Get(0).Str()))))
+
+ case "stateAt":
+ args := msg.Arguments()
+
+ JSON.Send(writer, pack(msg.Id, pipe.StorageAt(args.Get(0).Str(), args.Get(1).Str())))
+
+ case "balanceAt":
+ args := msg.Arguments()
+
+ JSON.Send(writer, pack(msg.Id, pipe.BalanceAt(args.Get(0).Str())))
+
+ case "newFilter":
+ case "newFilterString":
+ case "messages":
+ // TODO
+ }
+}
+*/