aboutsummaryrefslogblamecommitdiff
path: root/ethstats/ethstats.go
blob: a2a6aa406a35fd09bbecb098831ab6daf09e3d2e (plain) (tree)
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717






























                                                                                  



                                               
                                                       


                                               
































































































































































































































































































































































































































































































































































































































































































                                                                                                                                      
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// Package ethstats implements the network stats reporting service.
package ethstats

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"math/big"
	"net/http"
	"regexp"
	"runtime"
	"strconv"
	"strings"
	"time"

	"github.com/ava-labs/coreth/consensus"
	"github.com/ava-labs/coreth/core"
	"github.com/ava-labs/coreth/core/types"
	"github.com/ava-labs/coreth/eth"
	"github.com/ava-labs/coreth/rpc"
	"github.com/ava-labs/go-ethereum/common"
	"github.com/ava-labs/go-ethereum/common/mclock"
	"github.com/ava-labs/go-ethereum/event"
	"github.com/ava-labs/go-ethereum/les"
	"github.com/ava-labs/go-ethereum/log"
	"github.com/ava-labs/go-ethereum/p2p"
	"github.com/gorilla/websocket"
)

const (
	// historyUpdateRange is the number of blocks a node should report upon login or
	// history request.
	historyUpdateRange = 50

	// txChanSize is the size of channel listening to NewTxsEvent.
	// The number is referenced from the size of tx pool.
	txChanSize = 4096
	// chainHeadChanSize is the size of channel listening to ChainHeadEvent.
	chainHeadChanSize = 10
)

type txPool interface {
	// SubscribeNewTxsEvent should return an event subscription of
	// NewTxsEvent and send events to the given channel.
	SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription
}

type blockChain interface {
	SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription
}

// Service implements an Ethereum netstats reporting daemon that pushes local
// chain statistics up to a monitoring server.
type Service struct {
	server *p2p.Server        // Peer-to-peer server to retrieve networking infos
	eth    *eth.Ethereum      // Full Ethereum service if monitoring a full node
	les    *les.LightEthereum // Light Ethereum service if monitoring a light node
	engine consensus.Engine   // Consensus engine to retrieve variadic block fields

	node string // Name of the node to display on the monitoring page
	pass string // Password to authorize access to the monitoring page
	host string // Remote address of the monitoring service

	pongCh chan struct{} // Pong notifications are fed into this channel
	histCh chan []uint64 // History request block numbers are fed into this channel
}

// New returns a monitoring service ready for stats reporting.
func New(url string, ethServ *eth.Ethereum, lesServ *les.LightEthereum) (*Service, error) {
	// Parse the netstats connection url
	re := regexp.MustCompile("([^:@]*)(:([^@]*))?@(.+)")
	parts := re.FindStringSubmatch(url)
	if len(parts) != 5 {
		return nil, fmt.Errorf("invalid netstats url: \"%s\", should be nodename:secret@host:port", url)
	}
	// Assemble and return the stats service
	var engine consensus.Engine
	if ethServ != nil {
		engine = ethServ.Engine()
	} else {
		engine = lesServ.Engine()
	}
	return &Service{
		eth:    ethServ,
		les:    lesServ,
		engine: engine,
		node:   parts[1],
		pass:   parts[3],
		host:   parts[4],
		pongCh: make(chan struct{}),
		histCh: make(chan []uint64, 1),
	}, nil
}

// Protocols implements node.Service, returning the P2P network protocols used
// by the stats service (nil as it doesn't use the devp2p overlay network).
func (s *Service) Protocols() []p2p.Protocol { return nil }

// APIs implements node.Service, returning the RPC API endpoints provided by the
// stats service (nil as it doesn't provide any user callable APIs).
func (s *Service) APIs() []rpc.API { return nil }

// Start implements node.Service, starting up the monitoring and reporting daemon.
func (s *Service) Start(server *p2p.Server) error {
	s.server = server
	go s.loop()

	log.Info("Stats daemon started")
	return nil
}

// Stop implements node.Service, terminating the monitoring and reporting daemon.
func (s *Service) Stop() error {
	log.Info("Stats daemon stopped")
	return nil
}

// loop keeps trying to connect to the netstats server, reporting chain events
// until termination.
func (s *Service) loop() {
	// Subscribe to chain events to execute updates on
	var blockchain blockChain
	var txpool txPool
	if s.eth != nil {
		blockchain = s.eth.BlockChain()
		txpool = s.eth.TxPool()
	} else {
		blockchain = s.les.BlockChain()
		txpool = s.les.TxPool()
	}

	chainHeadCh := make(chan core.ChainHeadEvent, chainHeadChanSize)
	headSub := blockchain.SubscribeChainHeadEvent(chainHeadCh)
	defer headSub.Unsubscribe()

	txEventCh := make(chan core.NewTxsEvent, txChanSize)
	txSub := txpool.SubscribeNewTxsEvent(txEventCh)
	defer txSub.Unsubscribe()

	// Start a goroutine that exhausts the subsciptions to avoid events piling up
	var (
		quitCh = make(chan struct{})
		headCh = make(chan *types.Block, 1)
		txCh   = make(chan struct{}, 1)
	)
	go func() {
		var lastTx mclock.AbsTime

	HandleLoop:
		for {
			select {
			// Notify of chain head events, but drop if too frequent
			case head := <-chainHeadCh:
				select {
				case headCh <- head.Block:
				default:
				}

			// Notify of new transaction events, but drop if too frequent
			case <-txEventCh:
				if time.Duration(mclock.Now()-lastTx) < time.Second {
					continue
				}
				lastTx = mclock.Now()

				select {
				case txCh <- struct{}{}:
				default:
				}

			// node stopped
			case <-txSub.Err():
				break HandleLoop
			case <-headSub.Err():
				break HandleLoop
			}
		}
		close(quitCh)
	}()
	// Loop reporting until termination
	for {
		// Resolve the URL, defaulting to TLS, but falling back to none too
		path := fmt.Sprintf("%s/api", s.host)
		urls := []string{path}

		// url.Parse and url.IsAbs is unsuitable (https://github.com/golang/go/issues/19779)
		if !strings.Contains(path, "://") {
			urls = []string{"wss://" + path, "ws://" + path}
		}
		// Establish a websocket connection to the server on any supported URL
		var (
			conn *websocket.Conn
			err  error
		)
		dialer := websocket.Dialer{HandshakeTimeout: 5 * time.Second}
		header := make(http.Header)
		header.Set("origin", "http://localhost")
		for _, url := range urls {
			conn, _, err = dialer.Dial(url, header)
			if err == nil {
				break
			}
		}
		if err != nil {
			log.Warn("Stats server unreachable", "err", err)
			time.Sleep(10 * time.Second)
			continue
		}
		// Authenticate the client with the server
		if err = s.login(conn); err != nil {
			log.Warn("Stats login failed", "err", err)
			conn.Close()
			time.Sleep(10 * time.Second)
			continue
		}
		go s.readLoop(conn)

		// Send the initial stats so our node looks decent from the get go
		if err = s.report(conn); err != nil {
			log.Warn("Initial stats report failed", "err", err)
			conn.Close()
			continue
		}
		// Keep sending status updates until the connection breaks
		fullReport := time.NewTicker(15 * time.Second)

		for err == nil {
			select {
			case <-quitCh:
				conn.Close()
				return

			case <-fullReport.C:
				if err = s.report(conn); err != nil {
					log.Warn("Full stats report failed", "err", err)
				}
			case list := <-s.histCh:
				if err = s.reportHistory(conn, list); err != nil {
					log.Warn("Requested history report failed", "err", err)
				}
			case head := <-headCh:
				if err = s.reportBlock(conn, head); err != nil {
					log.Warn("Block stats report failed", "err", err)
				}
				if err = s.reportPending(conn); err != nil {
					log.Warn("Post-block transaction stats report failed", "err", err)
				}
			case <-txCh:
				if err = s.reportPending(conn); err != nil {
					log.Warn("Transaction stats report failed", "err", err)
				}
			}
		}
		// Make sure the connection is closed
		conn.Close()
	}
}

// readLoop loops as long as the connection is alive and retrieves data packets
// from the network socket. If any of them match an active request, it forwards
// it, if they themselves are requests it initiates a reply, and lastly it drops
// unknown packets.
func (s *Service) readLoop(conn *websocket.Conn) {
	// If the read loop exists, close the connection
	defer conn.Close()

	for {
		// Retrieve the next generic network packet and bail out on error
		var msg map[string][]interface{}
		if err := conn.ReadJSON(&msg); err != nil {
			log.Warn("Failed to decode stats server message", "err", err)
			return
		}
		log.Trace("Received message from stats server", "msg", msg)
		if len(msg["emit"]) == 0 {
			log.Warn("Stats server sent non-broadcast", "msg", msg)
			return
		}
		command, ok := msg["emit"][0].(string)
		if !ok {
			log.Warn("Invalid stats server message type", "type", msg["emit"][0])
			return
		}
		// If the message is a ping reply, deliver (someone must be listening!)
		if len(msg["emit"]) == 2 && command == "node-pong" {
			select {
			case s.pongCh <- struct{}{}:
				// Pong delivered, continue listening
				continue
			default:
				// Ping routine dead, abort
				log.Warn("Stats server pinger seems to have died")
				return
			}
		}
		// If the message is a history request, forward to the event processor
		if len(msg["emit"]) == 2 && command == "history" {
			// Make sure the request is valid and doesn't crash us
			request, ok := msg["emit"][1].(map[string]interface{})
			if !ok {
				log.Warn("Invalid stats history request", "msg", msg["emit"][1])
				s.histCh <- nil
				continue // Ethstats sometime sends invalid history requests, ignore those
			}
			list, ok := request["list"].([]interface{})
			if !ok {
				log.Warn("Invalid stats history block list", "list", request["list"])
				return
			}
			// Convert the block number list to an integer list
			numbers := make([]uint64, len(list))
			for i, num := range list {
				n, ok := num.(float64)
				if !ok {
					log.Warn("Invalid stats history block number", "number", num)
					return
				}
				numbers[i] = uint64(n)
			}
			select {
			case s.histCh <- numbers:
				continue
			default:
			}
		}
		// Report anything else and continue
		log.Info("Unknown stats message", "msg", msg)
	}
}

// nodeInfo is the collection of metainformation about a node that is displayed
// on the monitoring page.
type nodeInfo struct {
	Name     string `json:"name"`
	Node     string `json:"node"`
	Port     int    `json:"port"`
	Network  string `json:"net"`
	Protocol string `json:"protocol"`
	API      string `json:"api"`
	Os       string `json:"os"`
	OsVer    string `json:"os_v"`
	Client   string `json:"client"`
	History  bool   `json:"canUpdateHistory"`
}

// authMsg is the authentication infos needed to login to a monitoring server.
type authMsg struct {
	ID     string   `json:"id"`
	Info   nodeInfo `json:"info"`
	Secret string   `json:"secret"`
}

// login tries to authorize the client at the remote server.
func (s *Service) login(conn *websocket.Conn) error {
	// Construct and send the login authentication
	infos := s.server.NodeInfo()

	var network, protocol string
	if info := infos.Protocols["eth"]; info != nil {
		network = fmt.Sprintf("%d", info.(*eth.NodeInfo).Network)
		protocol = fmt.Sprintf("eth/%d", eth.ProtocolVersions[0])
	} else {
		network = fmt.Sprintf("%d", infos.Protocols["les"].(*les.NodeInfo).Network)
		protocol = fmt.Sprintf("les/%d", les.ClientProtocolVersions[0])
	}
	auth := &authMsg{
		ID: s.node,
		Info: nodeInfo{
			Name:     s.node,
			Node:     infos.Name,
			Port:     infos.Ports.Listener,
			Network:  network,
			Protocol: protocol,
			API:      "No",
			Os:       runtime.GOOS,
			OsVer:    runtime.GOARCH,
			Client:   "0.1.1",
			History:  true,
		},
		Secret: s.pass,
	}
	login := map[string][]interface{}{
		"emit": {"hello", auth},
	}
	if err := conn.WriteJSON(login); err != nil {
		return err
	}
	// Retrieve the remote ack or connection termination
	var ack map[string][]string
	if err := conn.ReadJSON(&ack); err != nil || len(ack["emit"]) != 1 || ack["emit"][0] != "ready" {
		return errors.New("unauthorized")
	}
	return nil
}

// report collects all possible data to report and send it to the stats server.
// This should only be used on reconnects or rarely to avoid overloading the
// server. Use the individual methods for reporting subscribed events.
func (s *Service) report(conn *websocket.Conn) error {
	if err := s.reportLatency(conn); err != nil {
		return err
	}
	if err := s.reportBlock(conn, nil); err != nil {
		return err
	}
	if err := s.reportPending(conn); err != nil {
		return err
	}
	if err := s.reportStats(conn); err != nil {
		return err
	}
	return nil
}

// reportLatency sends a ping request to the server, measures the RTT time and
// finally sends a latency update.
func (s *Service) reportLatency(conn *websocket.Conn) error {
	// Send the current time to the ethstats server
	start := time.Now()

	ping := map[string][]interface{}{
		"emit": {"node-ping", map[string]string{
			"id":         s.node,
			"clientTime": start.String(),
		}},
	}
	if err := conn.WriteJSON(ping); err != nil {
		return err
	}
	// Wait for the pong request to arrive back
	select {
	case <-s.pongCh:
		// Pong delivered, report the latency
	case <-time.After(5 * time.Second):
		// Ping timeout, abort
		return errors.New("ping timed out")
	}
	latency := strconv.Itoa(int((time.Since(start) / time.Duration(2)).Nanoseconds() / 1000000))

	// Send back the measured latency
	log.Trace("Sending measured latency to ethstats", "latency", latency)

	stats := map[string][]interface{}{
		"emit": {"latency", map[string]string{
			"id":      s.node,
			"latency": latency,
		}},
	}
	return conn.WriteJSON(stats)
}

// blockStats is the information to report about individual blocks.
type blockStats struct {
	Number     *big.Int       `json:"number"`
	Hash       common.Hash    `json:"hash"`
	ParentHash common.Hash    `json:"parentHash"`
	Timestamp  *big.Int       `json:"timestamp"`
	Miner      common.Address `json:"miner"`
	GasUsed    uint64         `json:"gasUsed"`
	GasLimit   uint64         `json:"gasLimit"`
	Diff       string         `json:"difficulty"`
	TotalDiff  string         `json:"totalDifficulty"`
	Txs        []txStats      `json:"transactions"`
	TxHash     common.Hash    `json:"transactionsRoot"`
	Root       common.Hash    `json:"stateRoot"`
	Uncles     uncleStats     `json:"uncles"`
}

// txStats is the information to report about individual transactions.
type txStats struct {
	Hash common.Hash `json:"hash"`
}

// uncleStats is a custom wrapper around an uncle array to force serializing
// empty arrays instead of returning null for them.
type uncleStats []*types.Header

func (s uncleStats) MarshalJSON() ([]byte, error) {
	if uncles := ([]*types.Header)(s); len(uncles) > 0 {
		return json.Marshal(uncles)
	}
	return []byte("[]"), nil
}

// reportBlock retrieves the current chain head and reports it to the stats server.
func (s *Service) reportBlock(conn *websocket.Conn, block *types.Block) error {
	// Gather the block details from the header or block chain
	details := s.assembleBlockStats(block)

	// Assemble the block report and send it to the server
	log.Trace("Sending new block to ethstats", "number", details.Number, "hash", details.Hash)

	stats := map[string]interface{}{
		"id":    s.node,
		"block": details,
	}
	report := map[string][]interface{}{
		"emit": {"block", stats},
	}
	return conn.WriteJSON(report)
}

// assembleBlockStats retrieves any required metadata to report a single block
// and assembles the block stats. If block is nil, the current head is processed.
func (s *Service) assembleBlockStats(block *types.Block) *blockStats {
	// Gather the block infos from the local blockchain
	var (
		header *types.Header
		td     *big.Int
		txs    []txStats
		uncles []*types.Header
	)
	if s.eth != nil {
		// Full nodes have all needed information available
		if block == nil {
			block = s.eth.BlockChain().CurrentBlock()
		}
		header = block.Header()
		td = s.eth.BlockChain().GetTd(header.Hash(), header.Number.Uint64())

		txs = make([]txStats, len(block.Transactions()))
		for i, tx := range block.Transactions() {
			txs[i].Hash = tx.Hash()
		}
		uncles = block.Uncles()
	} else {
		// Light nodes would need on-demand lookups for transactions/uncles, skip
		if block != nil {
			header = block.Header()
		} else {
			header = s.les.BlockChain().CurrentHeader()
		}
		td = s.les.BlockChain().GetTd(header.Hash(), header.Number.Uint64())
		txs = []txStats{}
	}
	// Assemble and return the block stats
	author, _ := s.engine.Author(header)

	return &blockStats{
		Number:     header.Number,
		Hash:       header.Hash(),
		ParentHash: header.ParentHash,
		Timestamp:  new(big.Int).SetUint64(header.Time),
		Miner:      author,
		GasUsed:    header.GasUsed,
		GasLimit:   header.GasLimit,
		Diff:       header.Difficulty.String(),
		TotalDiff:  td.String(),
		Txs:        txs,
		TxHash:     header.TxHash,
		Root:       header.Root,
		Uncles:     uncles,
	}
}

// reportHistory retrieves the most recent batch of blocks and reports it to the
// stats server.
func (s *Service) reportHistory(conn *websocket.Conn, list []uint64) error {
	// Figure out the indexes that need reporting
	indexes := make([]uint64, 0, historyUpdateRange)
	if len(list) > 0 {
		// Specific indexes requested, send them back in particular
		indexes = append(indexes, list...)
	} else {
		// No indexes requested, send back the top ones
		var head int64
		if s.eth != nil {
			head = s.eth.BlockChain().CurrentHeader().Number.Int64()
		} else {
			head = s.les.BlockChain().CurrentHeader().Number.Int64()
		}
		start := head - historyUpdateRange + 1
		if start < 0 {
			start = 0
		}
		for i := uint64(start); i <= uint64(head); i++ {
			indexes = append(indexes, i)
		}
	}
	// Gather the batch of blocks to report
	history := make([]*blockStats, len(indexes))
	for i, number := range indexes {
		// Retrieve the next block if it's known to us
		var block *types.Block
		if s.eth != nil {
			block = s.eth.BlockChain().GetBlockByNumber(number)
		} else {
			if header := s.les.BlockChain().GetHeaderByNumber(number); header != nil {
				block = types.NewBlockWithHeader(header)
			}
		}
		// If we do have the block, add to the history and continue
		if block != nil {
			history[len(history)-1-i] = s.assembleBlockStats(block)
			continue
		}
		// Ran out of blocks, cut the report short and send
		history = history[len(history)-i:]
		break
	}
	// Assemble the history report and send it to the server
	if len(history) > 0 {
		log.Trace("Sending historical blocks to ethstats", "first", history[0].Number, "last", history[len(history)-1].Number)
	} else {
		log.Trace("No history to send to stats server")
	}
	stats := map[string]interface{}{
		"id":      s.node,
		"history": history,
	}
	report := map[string][]interface{}{
		"emit": {"history", stats},
	}
	return conn.WriteJSON(report)
}

// pendStats is the information to report about pending transactions.
type pendStats struct {
	Pending int `json:"pending"`
}

// reportPending retrieves the current number of pending transactions and reports
// it to the stats server.
func (s *Service) reportPending(conn *websocket.Conn) error {
	// Retrieve the pending count from the local blockchain
	var pending int
	if s.eth != nil {
		pending, _ = s.eth.TxPool().Stats()
	} else {
		pending = s.les.TxPool().Stats()
	}
	// Assemble the transaction stats and send it to the server
	log.Trace("Sending pending transactions to ethstats", "count", pending)

	stats := map[string]interface{}{
		"id": s.node,
		"stats": &pendStats{
			Pending: pending,
		},
	}
	report := map[string][]interface{}{
		"emit": {"pending", stats},
	}
	return conn.WriteJSON(report)
}

// nodeStats is the information to report about the local node.
type nodeStats struct {
	Active   bool `json:"active"`
	Syncing  bool `json:"syncing"`
	Mining   bool `json:"mining"`
	Hashrate int  `json:"hashrate"`
	Peers    int  `json:"peers"`
	GasPrice int  `json:"gasPrice"`
	Uptime   int  `json:"uptime"`
}

// reportPending retrieves various stats about the node at the networking and
// mining layer and reports it to the stats server.
func (s *Service) reportStats(conn *websocket.Conn) error {
	// Gather the syncing and mining infos from the local miner instance
	var (
		mining   bool
		hashrate int
		syncing  bool
		gasprice int
	)
	if s.eth != nil {
		mining = s.eth.Miner().Mining()
		hashrate = int(s.eth.Miner().HashRate())

		sync := s.eth.Downloader().Progress()
		syncing = s.eth.BlockChain().CurrentHeader().Number.Uint64() >= sync.HighestBlock

		price, _ := s.eth.APIBackend.SuggestPrice(context.Background())
		gasprice = int(price.Uint64())
	} else {
		sync := s.les.Downloader().Progress()
		syncing = s.les.BlockChain().CurrentHeader().Number.Uint64() >= sync.HighestBlock
	}
	// Assemble the node stats and send it to the server
	log.Trace("Sending node details to ethstats")

	stats := map[string]interface{}{
		"id": s.node,
		"stats": &nodeStats{
			Active:   true,
			Mining:   mining,
			Hashrate: hashrate,
			Peers:    s.server.PeerCount(),
			GasPrice: gasprice,
			Syncing:  syncing,
			Uptime:   100,
		},
	}
	report := map[string][]interface{}{
		"emit": {"stats", stats},
	}
	return conn.WriteJSON(report)
}