Decouple core from rpc

core/filter.go

@@ -12,17 +12,6 @@ type AccountChange struct {
 	Address, StateAddress []byte
 }
 
-type FilterOptions struct {
-	Earliest int64
-	Latest   int64
-
-	Address []common.Address
-	Topics  [][]common.Hash
-
-	Skip int
-	Max  int
-}
-
 // Filtering interface
 type Filter struct {
 	eth      Backend
@@ -44,18 +33,6 @@ func NewFilter(eth Backend) *Filter {
 	return &Filter{eth: eth}
 }
 
-// SetOptions copies the filter options to the filter it self. The reason for this "silly" copy
-// is simply because named arguments in this case is extremely nice and readable.
-func (self *Filter) SetOptions(options *FilterOptions) {
-	self.earliest = options.Earliest
-	self.latest = options.Latest
-	self.skip = options.Skip
-	self.max = options.Max
-	self.address = options.Address
-	self.topics = options.Topics
-
-}
-
 // Set the earliest and latest block for filtering.
 // -1 = latest block (i.e., the current block)
 // hash = particular hash from-to

rpc/api.go

@@ -6,7 +6,6 @@ import (
 	"sync"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/xeth"
 )
@@ -277,8 +276,7 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
 			return err
 		}
 
-		opts := toFilterOptions(args)
-		id := api.xeth().RegisterFilter(opts)
+		id := api.xeth().RegisterFilter(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)
 		*reply = common.ToHex(big.NewInt(int64(id)).Bytes())
 	case "eth_newBlockFilter":
 		args := new(FilterStringArgs)
@@ -310,8 +308,7 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
 		if err := json.Unmarshal(req.Params, &args); err != nil {
 			return err
 		}
-		opts := toFilterOptions(args)
-		*reply = NewLogsRes(api.xeth().AllLogs(opts))
+		*reply = NewLogsRes(api.xeth().AllLogs(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics))
 	case "eth_getWork":
 		api.xeth().SetMining(true)
 		*reply = api.xeth().RemoteMining().GetWork()
@@ -456,33 +453,3 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
 	rpclogger.DebugDetailf("Reply: %T %s", reply, reply)
 	return nil
 }
-
-func toFilterOptions(options *BlockFilterArgs) *core.FilterOptions {
-	var opts core.FilterOptions
-
-	opts.Address = cAddress(options.Address)
-	opts.Topics = cTopics(options.Topics)
-
-	opts.Earliest = options.Earliest
-	opts.Latest = options.Latest
-
-	return &opts
-}
-
-func cAddress(a []string) []common.Address {
-	bslice := make([]common.Address, len(a))
-	for i, addr := range a {
-		bslice[i] = common.HexToAddress(addr)
-	}
-	return bslice
-}
-
-func cTopics(t [][]string) [][]common.Hash {
-	topics := make([][]common.Hash, len(t))
-	for i, iv := range t {
-		for j, jv := range iv {
-			topics[i][j] = common.HexToHash(jv)
-		}
-	}
-	return topics
-}

xeth/xeth.go

@@ -110,6 +110,24 @@ func (self *XEth) stop() {
 	close(self.quit)
 }
 
+func cAddress(a []string) []common.Address {
+	bslice := make([]common.Address, len(a))
+	for i, addr := range a {
+		bslice[i] = common.HexToAddress(addr)
+	}
+	return bslice
+}
+
+func cTopics(t [][]string) [][]common.Hash {
+	topics := make([][]common.Hash, len(t))
+	for i, iv := range t {
+		for j, jv := range iv {
+			topics[i][j] = common.HexToHash(jv)
+		}
+	}
+	return topics
+}
+
 func (self *XEth) DefaultGas() *big.Int      { return defaultGas }
 func (self *XEth) DefaultGasPrice() *big.Int { return defaultGasPrice }
 
@@ -301,10 +319,15 @@ func (self *XEth) SecretToAddress(key string) string {
 	return common.ToHex(pair.Address())
 }
 
-func (self *XEth) RegisterFilter(args *core.FilterOptions) int {
+func (self *XEth) RegisterFilter(earliest, latest int64, skip, max int, address []string, topics [][]string) int {
 	var id int
 	filter := core.NewFilter(self.backend)
-	filter.SetOptions(args)
+	filter.SetEarliestBlock(earliest)
+	filter.SetLatestBlock(latest)
+	filter.SetSkip(skip)
+	filter.SetMax(max)
+	filter.SetAddress(cAddress(address))
+	filter.SetTopics(cTopics(topics))
 	filter.LogsCallback = func(logs state.Logs) {
 		self.logMut.Lock()
 		defer self.logMut.Unlock()
@@ -380,9 +403,14 @@ func (self *XEth) Logs(id int) state.Logs {
 	return nil
 }
 
-func (self *XEth) AllLogs(args *core.FilterOptions) state.Logs {
+func (self *XEth) AllLogs(earliest, latest int64, skip, max int, address []string, topics [][]string) state.Logs {
 	filter := core.NewFilter(self.backend)
-	filter.SetOptions(args)
+	filter.SetEarliestBlock(earliest)
+	filter.SetLatestBlock(latest)
+	filter.SetSkip(skip)
+	filter.SetMax(max)
+	filter.SetAddress(cAddress(address))
+	filter.SetTopics(cTopics(topics))
 
 	return filter.Find()
 }