Merge pull request #1239 from bas-vk/rpc-apis

RPC refactoring

1 files changed, 147 insertions, 0 deletions

diff --git a/rpc/api/miner.go b/rpc/api/miner.go
new file mode 100644
index 000000000..0b5e74f52
--- /dev/null
+++ b/rpc/api/miner.go
@@ -0,0 +1,147 @@
+package api
+
+import (
+	"github.com/ethereum/ethash"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/rpc/codec"
+	"github.com/ethereum/go-ethereum/rpc/shared"
+)
+
+const (
+	MinerApiVersion = "1.0"
+)
+
+var (
+	// mapping between methods and handlers
+	MinerMapping = map[string]minerhandler{
+		"miner_hashrate":     (*minerApi).Hashrate,
+		"miner_makeDAG":      (*minerApi).MakeDAG,
+		"miner_setExtra":     (*minerApi).SetExtra,
+		"miner_setGasPrice":  (*minerApi).SetGasPrice,
+		"miner_startAutoDAG": (*minerApi).StartAutoDAG,
+		"miner_start":        (*minerApi).StartMiner,
+		"miner_stopAutoDAG":  (*minerApi).StopAutoDAG,
+		"miner_stop":         (*minerApi).StopMiner,
+	}
+)
+
+// miner callback handler
+type minerhandler func(*minerApi, *shared.Request) (interface{}, error)
+
+// miner api provider
+type minerApi struct {
+	ethereum *eth.Ethereum
+	methods  map[string]minerhandler
+	codec    codec.ApiCoder
+}
+
+// create a new miner api instance
+func NewMinerApi(ethereum *eth.Ethereum, coder codec.Codec) *minerApi {
+	return &minerApi{
+		ethereum: ethereum,
+		methods:  MinerMapping,
+		codec:    coder.New(nil),
+	}
+}
+
+// Execute given request
+func (self *minerApi) Execute(req *shared.Request) (interface{}, error) {
+	if callback, ok := self.methods[req.Method]; ok {
+		return callback(self, req)
+	}
+
+	return nil, &shared.NotImplementedError{req.Method}
+}
+
+// collection with supported methods
+func (self *minerApi) Methods() []string {
+	methods := make([]string, len(self.methods))
+	i := 0
+	for k := range self.methods {
+		methods[i] = k
+		i++
+	}
+	return methods
+}
+
+func (self *minerApi) Name() string {
+	return MinerApiName
+}
+
+func (self *minerApi) ApiVersion() string {
+	return MinerApiVersion
+}
+
+func (self *minerApi) StartMiner(req *shared.Request) (interface{}, error) {
+	args := new(StartMinerArgs)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, err
+	}
+	if args.Threads == -1 { // (not specified by user, use default)
+		args.Threads = self.ethereum.MinerThreads
+	}
+
+	self.ethereum.StartAutoDAG()
+	err := self.ethereum.StartMining(args.Threads)
+	if err == nil {
+		return true, nil
+	}
+
+	return false, err
+}
+
+func (self *minerApi) StopMiner(req *shared.Request) (interface{}, error) {
+	self.ethereum.StopMining()
+	return true, nil
+}
+
+func (self *minerApi) Hashrate(req *shared.Request) (interface{}, error) {
+	return self.ethereum.Miner().HashRate(), nil
+}
+
+func (self *minerApi) SetExtra(req *shared.Request) (interface{}, error) {
+	args := new(SetExtraArgs)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, err
+	}
+	self.ethereum.Miner().SetExtra([]byte(args.Data))
+	return true, nil
+}
+
+func (self *minerApi) SetGasPrice(req *shared.Request) (interface{}, error) {
+	args := new(GasPriceArgs)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return false, err
+	}
+
+	self.ethereum.Miner().SetGasPrice(common.String2Big(args.Price))
+	return true, nil
+}
+
+func (self *minerApi) StartAutoDAG(req *shared.Request) (interface{}, error) {
+	self.ethereum.StartAutoDAG()
+	return true, nil
+}
+
+func (self *minerApi) StopAutoDAG(req *shared.Request) (interface{}, error) {
+	self.ethereum.StopAutoDAG()
+	return true, nil
+}
+
+func (self *minerApi) MakeDAG(req *shared.Request) (interface{}, error) {
+	args := new(MakeDAGArgs)
+	if err := self.codec.Decode(req.Params, &args); err != nil {
+		return nil, err
+	}
+
+	if args.BlockNumber < 0 {
+		return false, shared.NewValidationError("BlockNumber", "BlockNumber must be positive")
+	}
+
+	err := ethash.MakeDAG(uint64(args.BlockNumber), "")
+	if err == nil {
+		return true, nil
+	}
+	return false, err
+}