From eae81465c1c815c317cd30e4de6bdf4d59df2340 Mon Sep 17 00:00:00 2001
From: Bas van Kervel <bas@ethdev.com>
Date: Thu, 15 Oct 2015 16:07:19 +0200
Subject: rpc: new RPC implementation with pub/sub support

---
 miner/api.go    | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 miner/worker.go |  1 +
 2 files changed, 73 insertions(+)
 create mode 100644 miner/api.go

(limited to 'miner')

diff --git a/miner/api.go b/miner/api.go
new file mode 100644
index 000000000..65d106afd
--- /dev/null
+++ b/miner/api.go
@@ -0,0 +1,72 @@
+// 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"
+	rpc "github.com/ethereum/go-ethereum/rpc/v2"
+)
+
+// 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 {
+	return &PublicMinerAPI{miner, NewRemoteAgent()}
+}
+
+// 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
+}
diff --git a/miner/worker.go b/miner/worker.go
index 754a6fc48..1a411ae20 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -327,6 +327,7 @@ func (self *worker) wait() {
 				go func(block *types.Block, logs vm.Logs, receipts []*types.Receipt) {
 					self.mux.Post(core.NewMinedBlockEvent{block})
 					self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
+
 					if stat == core.CanonStatTy {
 						self.mux.Post(core.ChainHeadEvent{block})
 						self.mux.Post(logs)
-- 
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