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ethstats: cleanups, trace logs and "fix" history responses (#3812)

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This commit is contained in:
Péter Szilágyi 2017-03-24 11:42:40 +02:00 committed by Felix Lange
parent 8771c3061f
commit bb7dca275c
1 changed files with 85 additions and 69 deletions
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114
ethstats/ethstats.go
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@ -152,39 +152,31 @@ func (s *Service) loop() {
continue
}
// Authenticate the client with the server
in := json.NewDecoder(conn)
out := json.NewEncoder(conn)
if err = s.login(in, out); err != nil {
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, in)
go s.readLoop(conn)
// Send the initial stats so our node looks decent from the get go
if err = s.report(out); err != nil {
if err = s.report(conn); err != nil {
log.Warn("Initial stats report failed", "err", err)
conn.Close()
continue
}
if err = s.reportHistory(out, nil); err != nil {
log.Warn("Initial history 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 <-fullReport.C:
if err = s.report(out); err != nil {
if err = s.report(conn); err != nil {
log.Warn("Full stats report failed", "err", err)
}
case list := <-s.histCh:
if err = s.reportHistory(out, list); err != nil {
if err = s.reportHistory(conn, list); err != nil {
log.Warn("Requested history report failed", "err", err)
}
case head, ok := <-headSub.Chan():
@ -192,10 +184,10 @@ func (s *Service) loop() {
conn.Close()
return
}
if err = s.reportBlock(out, head.Data.(core.ChainHeadEvent).Block); err != nil {
if err = s.reportBlock(conn, head.Data.(core.ChainHeadEvent).Block); err != nil {
log.Warn("Block stats report failed", "err", err)
}
if err = s.reportPending(out); err != nil {
if err = s.reportPending(conn); err != nil {
log.Warn("Post-block transaction stats report failed", "err", err)
}
case _, ok := <-txSub.Chan():
@ -211,7 +203,7 @@ func (s *Service) loop() {
exhausted = true
}
}
if err = s.reportPending(out); err != nil {
if err = s.reportPending(conn); err != nil {
log.Warn("Transaction stats report failed", "err", err)
}
}
@ -225,17 +217,18 @@ func (s *Service) loop() {
// 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, in *json.Decoder) {
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 := in.Decode(&msg); err != nil {
if err := websocket.JSON.Receive(conn, &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
@ -263,6 +256,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) {
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{})
@ -314,7 +308,7 @@ type authMsg struct {
}
// login tries to authorize the client at the remote server.
func (s *Service) login(in *json.Decoder, out *json.Encoder) error {
func (s *Service) login(conn *websocket.Conn) error {
// Construct and send the login authentication
infos := s.server.NodeInfo()
@ -345,12 +339,12 @@ func (s *Service) login(in *json.Decoder, out *json.Encoder) error {
login := map[string][]interface{}{
"emit": {"hello", auth},
}
if err := out.Encode(login); err != nil {
if err := websocket.JSON.Send(conn, login); err != nil {
return err
}
// Retrieve the remote ack or connection termination
var ack map[string][]string
if err := in.Decode(&ack); err != nil || len(ack["emit"]) != 1 || ack["emit"][0] != "ready" {
if err := websocket.JSON.Receive(conn, &ack); err != nil || len(ack["emit"]) != 1 || ack["emit"][0] != "ready" {
return errors.New("unauthorized")
}
return nil
@ -359,17 +353,17 @@ func (s *Service) login(in *json.Decoder, out *json.Encoder) error {
// 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(out *json.Encoder) error {
if err := s.reportLatency(out); err != nil {
func (s *Service) report(conn *websocket.Conn) error {
if err := s.reportLatency(conn); err != nil {
return err
}
if err := s.reportBlock(out, nil); err != nil {
if err := s.reportBlock(conn, nil); err != nil {
return err
}
if err := s.reportPending(out); err != nil {
if err := s.reportPending(conn); err != nil {
return err
}
if err := s.reportStats(out); err != nil {
if err := s.reportStats(conn); err != nil {
return err
}
return nil
@ -377,7 +371,7 @@ func (s *Service) report(out *json.Encoder) error {
// reportLatency sends a ping request to the server, measures the RTT time and
// finally sends a latency update.
func (s *Service) reportLatency(out *json.Encoder) error {
func (s *Service) reportLatency(conn *websocket.Conn) error {
// Send the current time to the ethstats server
start := time.Now()
@ -387,7 +381,7 @@ func (s *Service) reportLatency(out *json.Encoder) error {
"clientTime": start.String(),
}},
}
if err := out.Encode(ping); err != nil {
if err := websocket.JSON.Send(conn, ping); err != nil {
return err
}
// Wait for the pong request to arrive back
@ -398,20 +392,25 @@ func (s *Service) reportLatency(out *json.Encoder) error {
// 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
latency := map[string][]interface{}{
log.Trace("Sending measured latency to ethstats", "latency", latency)
stats := map[string][]interface{}{
"emit": {"latency", map[string]string{
"id": s.node,
"latency": strconv.Itoa(int((time.Since(start) / time.Duration(2)).Nanoseconds() / 1000000)),
"latency": latency,
}},
}
return out.Encode(latency)
return websocket.JSON.Send(conn, 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 *big.Int `json:"gasUsed"`
@ -419,6 +418,8 @@ type blockStats struct {
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"`
}
@ -445,16 +446,21 @@ func (s uncleStats) MarshalJSON() ([]byte, error) {
}
// reportBlock retrieves the current chain head and repors it to the stats server.
func (s *Service) reportBlock(out *json.Encoder, block *types.Block) error {
// Assemble the block stats report and send it to the 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": s.assembleBlockStats(block),
"block": details,
}
report := map[string][]interface{}{
"emit": {"block", stats},
}
return out.Encode(report)
return websocket.JSON.Send(conn, report)
}
// assembleBlockStats retrieves any required metadata to report a single block
@ -490,6 +496,7 @@ func (s *Service) assembleBlockStats(block *types.Block) *blockStats {
return &blockStats{
Number: header.Number,
Hash: header.Hash(),
ParentHash: header.ParentHash,
Timestamp: header.Time,
Miner: header.Coinbase,
GasUsed: new(big.Int).Set(header.GasUsed),
@ -497,13 +504,15 @@ func (s *Service) assembleBlockStats(block *types.Block) *blockStats {
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(out *json.Encoder, list []uint64) error {
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 {
@ -511,17 +520,17 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error {
indexes = append(indexes, list...)
} else {
// No indexes requested, send back the top ones
var head *types.Header
var head int64
if s.eth != nil {
head = s.eth.BlockChain().CurrentHeader()
head = s.eth.BlockChain().CurrentHeader().Number.Int64()
} else {
head = s.les.BlockChain().CurrentHeader()
head = s.les.BlockChain().CurrentHeader().Number.Int64()
}
start := head.Number.Int64() - historyUpdateRange
start := head - historyUpdateRange + 1
if start < 0 {
start = 0
}
for i := uint64(start); i <= head.Number.Uint64(); i++ {
for i := uint64(start); i <= uint64(head); i++ {
indexes = append(indexes, i)
}
}
@ -529,12 +538,14 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error {
history := make([]*blockStats, len(indexes))
for i, number := range indexes {
if s.eth != nil {
history[i] = s.assembleBlockStats(s.eth.BlockChain().GetBlockByNumber(number))
history[len(history)-1-i] = s.assembleBlockStats(s.eth.BlockChain().GetBlockByNumber(number))
} else {
history[i] = s.assembleBlockStats(types.NewBlockWithHeader(s.les.BlockChain().GetHeaderByNumber(number)))
history[len(history)-1-i] = s.assembleBlockStats(types.NewBlockWithHeader(s.les.BlockChain().GetHeaderByNumber(number)))
}
}
// Assemble the history report and send it to the server
log.Trace("Sending historical blocks to ethstats", "first", history[0].Number, "last", history[len(history)-1].Number)
stats := map[string]interface{}{
"id": s.node,
"history": history,
@ -542,7 +553,7 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error {
report := map[string][]interface{}{
"emit": {"history", stats},
}
return out.Encode(report)
return websocket.JSON.Send(conn, report)
}
// pendStats is the information to report about pending transactions.
@ -552,7 +563,7 @@ type pendStats struct {
// reportPending retrieves the current number of pending transactions and reports
// it to the stats server.
func (s *Service) reportPending(out *json.Encoder) error {
func (s *Service) reportPending(conn *websocket.Conn) error {
// Retrieve the pending count from the local blockchain
var pending int
if s.eth != nil {
@ -561,6 +572,8 @@ func (s *Service) reportPending(out *json.Encoder) error {
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{
@ -570,10 +583,10 @@ func (s *Service) reportPending(out *json.Encoder) error {
report := map[string][]interface{}{
"emit": {"pending", stats},
}
return out.Encode(report)
return websocket.JSON.Send(conn, report)
}
// blockStats is the information to report about the local node.
// nodeStats is the information to report about the local node.
type nodeStats struct {
Active bool `json:"active"`
Syncing bool `json:"syncing"`
@ -586,7 +599,7 @@ type nodeStats struct {
// reportPending retrieves various stats about the node at the networking and
// mining layer and reports it to the stats server.
func (s *Service) reportStats(out *json.Encoder) error {
func (s *Service) reportStats(conn *websocket.Conn) error {
// Gather the syncing and mining infos from the local miner instance
var (
mining bool
@ -606,6 +619,9 @@ func (s *Service) reportStats(out *json.Encoder) error {
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{
@ -621,5 +637,5 @@ func (s *Service) reportStats(out *json.Encoder) error {
report := map[string][]interface{}{
"emit": {"stats", stats},
}
return out.Encode(report)
return websocket.JSON.Send(conn, report)
}