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More dapp samples

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* Info DApp, coin DApp
* Additional rpc methods
pull/272/merge
obscuren 10 years ago
parent 6488a392a3
commit 0031f388ac
7 changed files with 351 additions and 41 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 89
      cmd/mist/assets/examples/coin.html
  2. 72
      cmd/mist/assets/examples/info.html
  3. 39
      rpc/args.go
  4. 62
      rpc/message.go
  5. 105
      rpc/packages.go
  6. 19
      xeth/types.go
  7. 2
      xeth/world.go

89
cmd/mist/assets/examples/coin.html
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@ -0,0 +1,89 @@
<!doctype>
<html>
<head>
<script type="text/javascript" src="../ext/bignumber.min.js"></script>
<script type="text/javascript" src="../ext/ethereum.js/dist/ethereum.js"></script>
</head>
<body>
<h1>JevCoin</h1>
<div>
<strong>Balance</strong>
<span id="balance"></strong>
</div>
<div>
<span class="amount">Amount:</span>
<input type="text" id="address" style="width:200px">
<input type="text" id="amount" style="width:200px">
<button onclick="transact()">Send</button>
</div>
<table width="100%" id="table">
</table>
</body>
<script type="text/javascript">
var web3 = require('web3');
var eth = web3.eth;
web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8080'));
var desc = [{
"name": "balance(address)",
"inputs": [{
"name": "who",
"type": "address"
}],
"const": true,
"outputs": [{
"name": "value",
"type": "uint256"
}]
}, {
"name": "send(address,uint256)",
"inputs": [{
"name": "to",
"type": "address"
}, {
"name": "value",
"type": "uint256"
}],
"outputs": []
}];
var code = "0x60056011565b60ae8060356000396000f35b64174876e800600033600160a060020a031660005260205260406000208190555056006001600060e060020a600035048063d0679d34146022578063e3d670d714603457005b602e6004356024356047565b60006000f35b603d600435608d565b8060005260206000f35b80600083600160a060020a0316600052602052604060002090815401908190555080600033600160a060020a031660005260205260406000209081540390819055505050565b6000600082600160a060020a0316600052602052604060002054905091905056";
var address = web3.eth.transact({
data: code,
gasprice: "1000000000000000",
gas: "10000",
});
var contract = web3.eth.contract(address, desc);
document.querySelector("#balance").innerHTML = contract.call().balance(eth.coinbase);
function reflesh() {
var table = document.querySelector("#table");
table.innerHTML = ""; // clear
var storage = eth.storageAt(address);
for( var item in storage ) {
table.innerHTML += "<tr><td>"+item+"</td><td>"+web3.toDecimal(storage[item])+"</td></tr>";
}
}
function transact() {
//var to = "0x"+document.querySelector("#address").value;
var to = "0x4205b06c2cfa0e30359edcab94543266cb6fa1d3";
console.log("to "+to);
var value = parseInt( document.querySelector("#amount").value );
console.log("value "+value);
contract.transact({gas: "10000", gasPrice: "1000000000000"}).send( to, value );
}
reflesh();
</script>
</html>

72
cmd/mist/assets/examples/info.html
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@ -0,0 +1,72 @@
<!doctype>
<html>
<head>
<script type="text/javascript" src="../ext/bignumber.min.js"></script>
<script type="text/javascript" src="../ext/ethereum.js/dist/ethereum.js"></script>
</head>
<body>
<h1>Info</h1>
<table width="100%">
<tr>
<td>Block number</td>
<td id="number"></td>
</tr>
<tr>
<td>Peer count</td>
<td id="peer_count"></td>
</tr>
<tr>
<td>Default block</td>
<td id="default_block"></td>
</tr>
<tr>
<td>Accounts</td>
<td id="accounts"></td>
</tr>
<tr>
<td>Gas price</td>
<td id="gas_price"></td>
</tr>
<tr>
<td>Mining</td>
<td id="mining"></td>
</tr>
<tr>
<td>Listening</td>
<td id="listening"></td>
</tr>
<tr>
<td>Coinbase</td>
<td id="coinbase"></td>
</tr>
</table>
</body>
<script type="text/javascript">
var web3 = require('web3');
var eth = web3.eth;
web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8080'));
document.querySelector("#number").innerHTML = eth.number;
document.querySelector("#coinbase").innerHTML = eth.coinbase
document.querySelector("#peer_count").innerHTML = eth.peerCount;
document.querySelector("#default_block").innerHTML = eth.defaultBlock;
document.querySelector("#accounts").innerHTML = eth.accounts;
document.querySelector("#gas_price").innerHTML = eth.gasPrice;
document.querySelector("#mining").innerHTML = eth.mining;
document.querySelector("#listening").innerHTML = eth.listening;
</script>
</html>

39
rpc/args.go
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@ -69,10 +69,28 @@ func (a *PushTxArgs) requirementsPushTx() error {
type GetStorageArgs struct {
Address string
Key string
}
func (obj *GetStorageArgs) UnmarshalJSON(b []byte) (err error) {
if err = json.Unmarshal(b, &obj.Address); err != nil {
return NewErrorResponse(ErrorDecodeArgs)
}
return
}
func (a *GetStorageArgs) requirements() error {
if len(a.Address) == 0 {
return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
}
return nil
}
type GetStateArgs struct {
Address string
Key string
}
func (obj *GetStateArgs) UnmarshalJSON(b []byte) (err error) {
arg0 := ""
if err = json.Unmarshal(b, arg0); err == nil {
obj.Address = arg0
@ -81,7 +99,7 @@ func (obj *GetStorageArgs) UnmarshalJSON(b []byte) (err error) {
return NewErrorResponse(ErrorDecodeArgs)
}
func (a *GetStorageArgs) requirements() error {
func (a *GetStateArgs) requirements() error {
if a.Address == "" {
return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
}
@ -94,7 +112,6 @@ func (a *GetStorageArgs) requirements() error {
type GetStorageAtRes struct {
Key string `json:"key"`
Value string `json:"value"`
Address string `json:"address"`
}
type GetTxCountArgs struct {
@ -218,3 +235,19 @@ func toFilterOptions(options *FilterOptions) core.FilterOptions {
type FilterChangedArgs struct {
n int
}
type DbArgs struct {
Database string
Key string
Value string
}
func (a *DbArgs) requirements() error {
if len(a.Database) == 0 {
return NewErrorResponse("DbPutArgs requires an 'Database' value as argument")
}
if len(a.Key) == 0 {
return NewErrorResponse("DbPutArgs requires an 'Key' value as argument")
}
return nil
}

62
rpc/message.go
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@ -126,12 +126,12 @@ func (req *RpcRequest) ToPushTxArgs() (*PushTxArgs, error) {
return args, nil
}
func (req *RpcRequest) ToGetStorageArgs() (*GetStorageArgs, error) {
if len(req.Params) < 2 {
func (req *RpcRequest) ToGetStateArgs() (*GetStateArgs, error) {
if len(req.Params) < 1 {
return nil, NewErrorResponse(ErrorArguments)
}
args := new(GetStorageArgs)
args := new(GetStateArgs)
// TODO need to pass both arguments
r := bytes.NewReader(req.Params[0])
err := json.NewDecoder(r).Decode(args)
@ -142,6 +142,21 @@ func (req *RpcRequest) ToGetStorageArgs() (*GetStorageArgs, error) {
return args, nil
}
func (req *RpcRequest) ToStorageAtArgs() (*GetStorageArgs, error) {
if len(req.Params) < 1 {
return nil, NewErrorResponse(ErrorArguments)
}
args := new(GetStorageArgs)
r := bytes.NewReader(req.Params[0])
err := json.NewDecoder(r).Decode(args)
if err != nil {
return nil, NewErrorResponse(ErrorDecodeArgs)
}
rpclogger.DebugDetailf("%T %v", args, args)
return args, nil
}
func (req *RpcRequest) ToGetTxCountArgs() (*GetTxCountArgs, error) {
if len(req.Params) < 1 {
return nil, NewErrorResponse(ErrorArguments)
@ -239,3 +254,44 @@ func toLogs(logs state.Logs) (ls []Log) {
return
}
func (req *RpcRequest) ToDbPutArgs() (*DbArgs, error) {
if len(req.Params) < 3 {
return nil, NewErrorResponse(ErrorArguments)
}
var args DbArgs
err := json.Unmarshal(req.Params[0], &args.Database)
if err != nil {
return nil, NewErrorResponseWithError(ErrorDecodeArgs, err)
}
err = json.Unmarshal(req.Params[1], &args.Key)
if err != nil {
return nil, NewErrorResponseWithError(ErrorDecodeArgs, err)
}
err = json.Unmarshal(req.Params[2], &args.Value)
if err != nil {
return nil, NewErrorResponseWithError(ErrorDecodeArgs, err)
}
rpclogger.DebugDetailf("%T %v", args, args)
return &args, nil
}
func (req *RpcRequest) ToDbGetArgs() (*DbArgs, error) {
if len(req.Params) < 2 {
return nil, NewErrorResponse(ErrorArguments)
}
var args DbArgs
err := json.Unmarshal(req.Params[0], &args.Database)
if err != nil {
return nil, NewErrorResponseWithError(ErrorDecodeArgs, err)
}
err = json.Unmarshal(req.Params[1], &args.Key)
if err != nil {
return nil, NewErrorResponseWithError(ErrorDecodeArgs, err)
}
rpclogger.DebugDetailf("%T %v", args, args)
return &args, nil
}

105
rpc/packages.go
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@ -33,6 +33,7 @@ import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/event/filter"
"github.com/ethereum/go-ethereum/state"
@ -63,13 +64,17 @@ type EthereumApi struct {
mut sync.RWMutex
logs map[int]state.Logs
db ethutil.Database
}
func NewEthereumApi(xeth *xeth.XEth) *EthereumApi {
db, _ := ethdb.NewLDBDatabase("dapps")
api := &EthereumApi{
xeth: xeth,
filterManager: filter.NewFilterManager(xeth.Backend().EventMux()),
logs: make(map[int]state.Logs),
db: db,
}
go api.filterManager.Start()
@ -91,29 +96,6 @@ func (self *EthereumApi) NewFilter(args *FilterOptions, reply *interface{}) erro
return nil
}
type Log struct {
Address string `json:"address"`
Topics []string `json:"topics"`
Data string `json:"data"`
}
func toLogs(logs state.Logs) (ls []Log) {
ls = make([]Log, len(logs))
for i, log := range logs {
var l Log
l.Topics = make([]string, len(log.Topics()))
l.Address = toHex(log.Address())
l.Data = toHex(log.Data())
for j, topic := range log.Topics() {
l.Topics[j] = toHex(topic)
}
ls[i] = l
}
return
}
func (self *EthereumApi) FilterChanged(id int, reply *interface{}) error {
self.mut.RLock()
defer self.mut.RUnlock()
@ -176,7 +158,7 @@ func (p *EthereumApi) PushTx(args *PushTxArgs, reply *interface{}) error {
return nil
}
func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *interface{}) error {
func (p *EthereumApi) GetStateAt(args *GetStateArgs, reply *interface{}) error {
err := args.requirements()
if err != nil {
return err
@ -184,6 +166,7 @@ func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *interface{}) err
state := p.xeth.State().SafeGet(args.Address)
value := state.StorageString(args.Key)
var hx string
if strings.Index(args.Key, "0x") == 0 {
hx = string([]byte(args.Key)[2:])
@ -192,9 +175,18 @@ func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *interface{}) err
i, _ := new(big.Int).SetString(args.Key, 10)
hx = ethutil.Bytes2Hex(i.Bytes())
}
rpclogger.Debugf("GetStorageAt(%s, %s)\n", args.Address, hx)
value := state.Storage(ethutil.Hex2Bytes(hx))
*reply = GetStorageAtRes{Address: args.Address, Key: args.Key, Value: value.Str()}
rpclogger.Debugf("GetStateAt(%s, %s)\n", args.Address, hx)
*reply = map[string]string{args.Key: value.Str()}
return nil
}
func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *interface{}) error {
err := args.requirements()
if err != nil {
return err
}
*reply = p.xeth.State().SafeGet(args.Address).Storage()
return nil
}
@ -213,11 +205,21 @@ func (p *EthereumApi) GetCoinbase(reply *interface{}) error {
return nil
}
func (p *EthereumApi) Accounts(reply *interface{}) error {
*reply = p.xeth.Accounts()
return nil
}
func (p *EthereumApi) GetIsMining(reply *interface{}) error {
*reply = p.xeth.IsMining()
return nil
}
func (p *EthereumApi) BlockNumber(reply *interface{}) error {
*reply = p.xeth.Backend().ChainManager().CurrentBlock().Number()
return nil
}
func (p *EthereumApi) GetTxCountAt(args *GetTxCountArgs, reply *interface{}) error {
err := args.requirements()
if err != nil {
@ -251,6 +253,28 @@ func (p *EthereumApi) Sha3(args *Sha3Args, reply *interface{}) error {
return nil
}
func (p *EthereumApi) DbPut(args *DbArgs, reply *interface{}) error {
err := args.requirements()
if err != nil {
return err
}
p.db.Put([]byte(args.Database+args.Key), []byte(args.Value))
*reply = true
return nil
}
func (p *EthereumApi) DbGet(args *DbArgs, reply *interface{}) error {
err := args.requirements()
if err != nil {
return err
}
res, _ := p.db.Get([]byte(args.Database + args.Key))
*reply = string(res)
return nil
}
func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error {
// Spec at https://github.com/ethereum/wiki/wiki/Generic-ON-RPC
rpclogger.DebugDetailf("%T %s", req.Params, req.Params)
@ -263,6 +287,10 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
return p.GetIsMining(reply)
case "eth_peerCount":
return p.GetPeerCount(reply)
case "eth_number":
return p.BlockNumber(reply)
case "eth_accounts":
return p.Accounts(reply)
case "eth_countAt":
args, err := req.ToGetTxCountArgs()
if err != nil {
@ -282,7 +310,13 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
}
return p.GetBalanceAt(args, reply)
case "eth_stateAt":
args, err := req.ToGetStorageArgs()
args, err := req.ToGetStateArgs()
if err != nil {
return err
}
return p.GetStateAt(args, reply)
case "eth_storageAt":
args, err := req.ToStorageAtArgs()
if err != nil {
return err
}
@ -317,12 +351,27 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
return err
}
return p.FilterChanged(args, reply)
case "eth_gasPrice":
*reply = "1000000000000000"
return nil
case "web3_sha3":
args, err := req.ToSha3Args()
if err != nil {
return err
}
return p.Sha3(args, reply)
case "db_put":
args, err := req.ToDbPutArgs()
if err != nil {
return err
}
return p.DbPut(args, reply)
case "db_get":
args, err := req.ToDbGetArgs()
if err != nil {
return err
}
return p.DbGet(args, reply)
default:
return NewErrorResponse(fmt.Sprintf("%v %s", ErrorNotImplemented, req.Method))
}

19
xeth/types.go
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@ -35,20 +35,31 @@ func NewObject(state *state.StateObject) *Object {
func (self *Object) StorageString(str string) *ethutil.Value {
if ethutil.IsHex(str) {
return self.Storage(ethutil.Hex2Bytes(str[2:]))
return self.storage(ethutil.Hex2Bytes(str[2:]))
} else {
return self.Storage(ethutil.RightPadBytes([]byte(str), 32))
return self.storage(ethutil.RightPadBytes([]byte(str), 32))
}
}
func (self *Object) StorageValue(addr *ethutil.Value) *ethutil.Value {
return self.Storage(addr.Bytes())
return self.storage(addr.Bytes())
}
func (self *Object) Storage(addr []byte) *ethutil.Value {
func (self *Object) storage(addr []byte) *ethutil.Value {
return self.StateObject.GetStorage(ethutil.BigD(addr))
}
func (self *Object) Storage() (storage map[string]string) {
storage = make(map[string]string)
it := self.StateObject.Trie().Iterator()
for it.Next() {
storage[toHex(it.Key)] = toHex(it.Value)
}
return
}
// Block interface exposed to QML
type Block struct {
//Transactions string `json:"transactions"`

2
xeth/world.go
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@ -11,7 +11,7 @@ func NewState(xeth *XEth) *State {
}
func (self *State) State() *state.StateDB {
return self.xeth.chainManager.State()
return self.xeth.chainManager.TransState()
}
func (self *State) Get(addr string) *Object {

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