Merge pull request #2189 from karalabe/fix-nil-miner

eth, miner: move the public miner api into eth to access etherbase

eth/api.go

@@ -169,6 +169,58 @@ func (s *PublicEthereumAPI) Syncing() (interface{}, error) {
 	return false, nil
 }
 
+// PublicMinerAPI provides an API to control the miner.
+// It offers only methods that operate on data that pose no security risk when it is publicly accessible.
+type PublicMinerAPI struct {
+	e     *Ethereum
+	agent *miner.RemoteAgent
+}
+
+// NewPublicMinerAPI create a new PublicMinerAPI instance.
+func NewPublicMinerAPI(e *Ethereum) *PublicMinerAPI {
+	agent := miner.NewRemoteAgent()
+	e.Miner().Register(agent)
+
+	return &PublicMinerAPI{e, agent}
+}
+
+// Mining returns an indication if this node is currently mining.
+func (s *PublicMinerAPI) Mining() bool {
+	return s.e.IsMining()
+}
+
+// SubmitWork can be used by external miner to submit their POW solution. It returns an indication if the work was
+// accepted. Note, this is not an indication if the provided work was valid!
+func (s *PublicMinerAPI) SubmitWork(nonce rpc.HexNumber, solution, digest common.Hash) bool {
+	return s.agent.SubmitWork(nonce.Uint64(), digest, solution)
+}
+
+// GetWork returns a work package for external miner. The work package consists of 3 strings
+// result[0], 32 bytes hex encoded current block header pow-hash
+// result[1], 32 bytes hex encoded seed hash used for DAG
+// result[2], 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty
+func (s *PublicMinerAPI) GetWork() ([]string, error) {
+	if !s.e.IsMining() {
+		if err := s.e.StartMining(0, ""); err != nil {
+			return nil, err
+		}
+	}
+	if work, err := s.agent.GetWork(); err == nil {
+		return work[:], nil
+	} else {
+		glog.Infof("%v\n", err)
+	}
+	return nil, fmt.Errorf("mining not ready")
+}
+
+// SubmitHashrate can be used for remote miners to submit their hash rate. This enables the node to report the combined
+// hash rate of all miners which submit work through this node. It accepts the miner hash rate and an identifier which
+// must be unique between nodes.
+func (s *PublicMinerAPI) SubmitHashrate(hashrate rpc.HexNumber, id common.Hash) bool {
+	s.agent.SubmitHashrate(id, hashrate.Uint64())
+	return true
+}
+
 // PrivateMinerAPI provides private RPC methods to control the miner.
 // These methods can be abused by external users and must be considered insecure for use by untrusted users.
 type PrivateMinerAPI struct {

eth/backend.go

@@ -274,7 +274,7 @@ func (s *Ethereum) APIs() []rpc.API {
 		}, {
 			Namespace: "eth",
 			Version:   "1.0",
-			Service:   miner.NewPublicMinerAPI(s.Miner()),
+			Service:   NewPublicMinerAPI(s),
 			Public:    true,
 		}, {
 			Namespace: "eth",

miner/api.go

-// Copyright 2015 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-
-package miner
-
-import (
-	"fmt"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/logger/glog"
-	"github.com/ethereum/go-ethereum/rpc"
-)
-
-// PublicMinerAPI provides an API to control the miner.
-// It offers only methods that operate on data that pose no security risk when it is publicly accessible.
-type PublicMinerAPI struct {
-	miner *Miner
-	agent *RemoteAgent
-}
-
-// NewPublicMinerAPI create a new PublicMinerAPI instance.
-func NewPublicMinerAPI(miner *Miner) *PublicMinerAPI {
-	agent := NewRemoteAgent()
-	miner.Register(agent)
-
-	return &PublicMinerAPI{miner, agent}
-}
-
-// Mining returns an indication if this node is currently mining.
-func (s *PublicMinerAPI) Mining() bool {
-	return s.miner.Mining()
-}
-
-// SubmitWork can be used by external miner to submit their POW solution. It returns an indication if the work was
-// accepted. Note, this is not an indication if the provided work was valid!
-func (s *PublicMinerAPI) SubmitWork(nonce rpc.HexNumber, solution, digest common.Hash) bool {
-	return s.agent.SubmitWork(nonce.Uint64(), digest, solution)
-}
-
-// GetWork returns a work package for external miner. The work package consists of 3 strings
-// result[0], 32 bytes hex encoded current block header pow-hash
-// result[1], 32 bytes hex encoded seed hash used for DAG
-// result[2], 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty
-func (s *PublicMinerAPI) GetWork() ([]string, error) {
-	if !s.Mining() {
-		s.miner.Start(s.miner.coinbase, 0)
-	}
-	if work, err := s.agent.GetWork(); err == nil {
-		return work[:], nil
-	} else {
-		glog.Infof("%v\n", err)
-	}
-	return nil, fmt.Errorf("mining not ready")
-}
-
-// SubmitHashrate can be used for remote miners to submit their hash rate. This enables the node to report the combined
-// hash rate of all miners which submit work through this node. It accepts the miner hash rate and an identifier which
-// must be unique between nodes.
-func (s *PublicMinerAPI) SubmitHashrate(hashrate rpc.HexNumber, id common.Hash) bool {
-	s.agent.SubmitHashrate(id, hashrate.Uint64())
-	return true
-}