forked from cerc-io/plugeth
eth/protocols, prp/tracker: add support for req/rep rtt tracking (#22608)
* eth/protocols, prp/tracker: add support for req/rep rtt tracking * p2p/tracker: sanity cap the number of pending requests * pap/tracker: linter <3 * p2p/tracker: disable entire tracker if no metrics are enabled
This commit is contained in:
parent
9357280fce
commit
1fb9a6dd32
@ -223,7 +223,7 @@ func handleMessage(backend Backend, peer *Peer) error {
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if peer.Version() >= ETH66 {
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handlers = eth66
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}
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// Track the emount of time it takes to serve the request and run the handler
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// Track the amount of time it takes to serve the request and run the handler
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if metrics.Enabled {
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h := fmt.Sprintf("%s/%s/%d/%#02x", p2p.HandleHistName, ProtocolName, peer.Version(), msg.Code)
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defer func(start time.Time) {
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@ -327,6 +327,8 @@ func handleBlockHeaders66(backend Backend, msg Decoder, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, BlockHeadersMsg, res.RequestId)
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return backend.Handle(peer, &res.BlockHeadersPacket)
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}
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@ -345,6 +347,8 @@ func handleBlockBodies66(backend Backend, msg Decoder, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, BlockBodiesMsg, res.RequestId)
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return backend.Handle(peer, &res.BlockBodiesPacket)
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}
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@ -363,6 +367,8 @@ func handleNodeData66(backend Backend, msg Decoder, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, NodeDataMsg, res.RequestId)
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return backend.Handle(peer, &res.NodeDataPacket)
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}
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@ -381,6 +387,8 @@ func handleReceipts66(backend Backend, msg Decoder, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, ReceiptsMsg, res.RequestId)
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return backend.Handle(peer, &res.ReceiptsPacket)
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}
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@ -506,5 +514,7 @@ func handlePooledTransactions66(backend Backend, msg Decoder, peer *Peer) error
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}
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peer.markTransaction(tx.Hash())
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}
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requestTracker.Fulfil(peer.id, peer.version, PooledTransactionsMsg, txs.RequestId)
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return backend.Handle(peer, &txs.PooledTransactionsPacket)
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}
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@ -413,8 +413,11 @@ func (p *Peer) RequestOneHeader(hash common.Hash) error {
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Reverse: false,
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}
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetBlockHeadersMsg, BlockHeadersMsg, id)
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return p2p.Send(p.rw, GetBlockHeadersMsg, &GetBlockHeadersPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetBlockHeadersPacket: &query,
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})
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}
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@ -432,8 +435,11 @@ func (p *Peer) RequestHeadersByHash(origin common.Hash, amount int, skip int, re
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Reverse: reverse,
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}
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetBlockHeadersMsg, BlockHeadersMsg, id)
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return p2p.Send(p.rw, GetBlockHeadersMsg, &GetBlockHeadersPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetBlockHeadersPacket: &query,
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})
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}
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@ -451,8 +457,11 @@ func (p *Peer) RequestHeadersByNumber(origin uint64, amount int, skip int, rever
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Reverse: reverse,
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}
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetBlockHeadersMsg, BlockHeadersMsg, id)
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return p2p.Send(p.rw, GetBlockHeadersMsg, &GetBlockHeadersPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetBlockHeadersPacket: &query,
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})
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}
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@ -476,8 +485,11 @@ func (p *Peer) ExpectRequestHeadersByNumber(origin uint64, amount int, skip int,
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func (p *Peer) RequestBodies(hashes []common.Hash) error {
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p.Log().Debug("Fetching batch of block bodies", "count", len(hashes))
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetBlockBodiesMsg, BlockBodiesMsg, id)
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return p2p.Send(p.rw, GetBlockBodiesMsg, &GetBlockBodiesPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetBlockBodiesPacket: hashes,
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})
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}
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@ -489,8 +501,11 @@ func (p *Peer) RequestBodies(hashes []common.Hash) error {
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func (p *Peer) RequestNodeData(hashes []common.Hash) error {
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p.Log().Debug("Fetching batch of state data", "count", len(hashes))
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetNodeDataMsg, NodeDataMsg, id)
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return p2p.Send(p.rw, GetNodeDataMsg, &GetNodeDataPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetNodeDataPacket: hashes,
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})
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}
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@ -501,8 +516,11 @@ func (p *Peer) RequestNodeData(hashes []common.Hash) error {
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func (p *Peer) RequestReceipts(hashes []common.Hash) error {
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p.Log().Debug("Fetching batch of receipts", "count", len(hashes))
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetReceiptsMsg, ReceiptsMsg, id)
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return p2p.Send(p.rw, GetReceiptsMsg, &GetReceiptsPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetReceiptsPacket: hashes,
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})
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}
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@ -513,8 +531,11 @@ func (p *Peer) RequestReceipts(hashes []common.Hash) error {
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func (p *Peer) RequestTxs(hashes []common.Hash) error {
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p.Log().Debug("Fetching batch of transactions", "count", len(hashes))
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if p.Version() >= ETH66 {
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id := rand.Uint64()
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requestTracker.Track(p.id, p.version, GetPooledTransactionsMsg, PooledTransactionsMsg, id)
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return p2p.Send(p.rw, GetPooledTransactionsMsg, &GetPooledTransactionsPacket66{
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RequestId: rand.Uint64(),
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RequestId: id,
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GetPooledTransactionsPacket: hashes,
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})
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}
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26
eth/protocols/eth/tracker.go
Normal file
26
eth/protocols/eth/tracker.go
Normal file
@ -0,0 +1,26 @@
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// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package eth
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import (
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"time"
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"github.com/ethereum/go-ethereum/p2p/tracker"
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)
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// requestTracker is a singleton tracker for eth/66 and newer request times.
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var requestTracker = tracker.New(ProtocolName, 5*time.Minute)
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@ -227,6 +227,8 @@ func handleMessage(backend Backend, peer *Peer) error {
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return fmt.Errorf("accounts not monotonically increasing: #%d [%x] vs #%d [%x]", i-1, res.Accounts[i-1].Hash[:], i, res.Accounts[i].Hash[:])
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}
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}
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requestTracker.Fulfil(peer.id, peer.version, AccountRangeMsg, res.ID)
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return backend.Handle(peer, res)
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case msg.Code == GetStorageRangesMsg:
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@ -360,6 +362,8 @@ func handleMessage(backend Backend, peer *Peer) error {
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}
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}
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}
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requestTracker.Fulfil(peer.id, peer.version, StorageRangesMsg, res.ID)
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return backend.Handle(peer, res)
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case msg.Code == GetByteCodesMsg:
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@ -404,6 +408,8 @@ func handleMessage(backend Backend, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, ByteCodesMsg, res.ID)
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return backend.Handle(peer, res)
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case msg.Code == GetTrieNodesMsg:
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@ -497,6 +503,8 @@ func handleMessage(backend Backend, peer *Peer) error {
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if err := msg.Decode(res); err != nil {
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return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
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}
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requestTracker.Fulfil(peer.id, peer.version, TrieNodesMsg, res.ID)
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return backend.Handle(peer, res)
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default:
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@ -65,6 +65,8 @@ func (p *Peer) Log() log.Logger {
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// trie, starting with the origin.
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func (p *Peer) RequestAccountRange(id uint64, root common.Hash, origin, limit common.Hash, bytes uint64) error {
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p.logger.Trace("Fetching range of accounts", "reqid", id, "root", root, "origin", origin, "limit", limit, "bytes", common.StorageSize(bytes))
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requestTracker.Track(p.id, p.version, GetAccountRangeMsg, AccountRangeMsg, id)
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return p2p.Send(p.rw, GetAccountRangeMsg, &GetAccountRangePacket{
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ID: id,
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Root: root,
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@ -83,6 +85,7 @@ func (p *Peer) RequestStorageRanges(id uint64, root common.Hash, accounts []comm
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} else {
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p.logger.Trace("Fetching ranges of small storage slots", "reqid", id, "root", root, "accounts", len(accounts), "first", accounts[0], "bytes", common.StorageSize(bytes))
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}
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requestTracker.Track(p.id, p.version, GetStorageRangesMsg, StorageRangesMsg, id)
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return p2p.Send(p.rw, GetStorageRangesMsg, &GetStorageRangesPacket{
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ID: id,
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Root: root,
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@ -96,6 +99,8 @@ func (p *Peer) RequestStorageRanges(id uint64, root common.Hash, accounts []comm
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// RequestByteCodes fetches a batch of bytecodes by hash.
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func (p *Peer) RequestByteCodes(id uint64, hashes []common.Hash, bytes uint64) error {
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p.logger.Trace("Fetching set of byte codes", "reqid", id, "hashes", len(hashes), "bytes", common.StorageSize(bytes))
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requestTracker.Track(p.id, p.version, GetByteCodesMsg, ByteCodesMsg, id)
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return p2p.Send(p.rw, GetByteCodesMsg, &GetByteCodesPacket{
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ID: id,
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Hashes: hashes,
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@ -107,6 +112,8 @@ func (p *Peer) RequestByteCodes(id uint64, hashes []common.Hash, bytes uint64) e
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// a specificstate trie.
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func (p *Peer) RequestTrieNodes(id uint64, root common.Hash, paths []TrieNodePathSet, bytes uint64) error {
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p.logger.Trace("Fetching set of trie nodes", "reqid", id, "root", root, "pathsets", len(paths), "bytes", common.StorageSize(bytes))
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requestTracker.Track(p.id, p.version, GetTrieNodesMsg, TrieNodesMsg, id)
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return p2p.Send(p.rw, GetTrieNodesMsg, &GetTrieNodesPacket{
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ID: id,
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Root: root,
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26
eth/protocols/snap/tracker.go
Normal file
26
eth/protocols/snap/tracker.go
Normal file
@ -0,0 +1,26 @@
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// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package snap
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import (
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"time"
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"github.com/ethereum/go-ethereum/p2p/tracker"
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)
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// requestTracker is a singleton tracker for request times.
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var requestTracker = tracker.New(ProtocolName, time.Minute)
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@ -33,9 +33,6 @@ const (
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// HandleHistName is the prefix of the per-packet serving time histograms.
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HandleHistName = "p2p/handle"
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// WaitHistName is the prefix of the per-packet (req only) waiting time histograms.
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WaitHistName = "p2p/wait"
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)
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var (
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203
p2p/tracker/tracker.go
Normal file
203
p2p/tracker/tracker.go
Normal file
@ -0,0 +1,203 @@
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// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
|
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// it under the terms of the GNU Lesser General Public License as published by
|
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// the Free Software Foundation, either version 3 of the License, or
|
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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// GNU Lesser General Public License for more details.
|
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package tracker
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import (
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"container/list"
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"fmt"
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"sync"
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"time"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/metrics"
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)
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const (
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// trackedGaugeName is the prefix of the per-packet request tracking.
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trackedGaugeName = "p2p/tracked"
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// lostMeterName is the prefix of the per-packet request expirations.
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lostMeterName = "p2p/lost"
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// staleMeterName is the prefix of the per-packet stale responses.
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staleMeterName = "p2p/stale"
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// waitHistName is the prefix of the per-packet (req only) waiting time histograms.
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waitHistName = "p2p/wait"
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// maxTrackedPackets is a huge number to act as a failsafe on the number of
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// pending requests the node will track. It should never be hit unless an
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// attacker figures out a way to spin requests.
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maxTrackedPackets = 100000
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)
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// request tracks sent network requests which have not yet received a response.
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type request struct {
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peer string
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version uint // Protocol version
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reqCode uint64 // Protocol message code of the request
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resCode uint64 // Protocol message code of the expected response
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time time.Time // Timestamp when the request was made
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expire *list.Element // Expiration marker to untrack it
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}
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// Tracker is a pending network request tracker to measure how much time it takes
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// a remote peer to respond.
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type Tracker struct {
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protocol string // Protocol capability identifier for the metrics
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timeout time.Duration // Global timeout after which to drop a tracked packet
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pending map[uint64]*request // Currently pending requests
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expire *list.List // Linked list tracking the expiration order
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wake *time.Timer // Timer tracking the expiration of the next item
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lock sync.Mutex // Lock protecting from concurrent updates
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}
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// New creates a new network request tracker to monitor how much time it takes to
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// fill certain requests and how individual peers perform.
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func New(protocol string, timeout time.Duration) *Tracker {
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return &Tracker{
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protocol: protocol,
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timeout: timeout,
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pending: make(map[uint64]*request),
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expire: list.New(),
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}
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}
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// Track adds a network request to the tracker to wait for a response to arrive
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// or until the request it cancelled or times out.
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func (t *Tracker) Track(peer string, version uint, reqCode uint64, resCode uint64, id uint64) {
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if !metrics.Enabled {
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return
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}
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t.lock.Lock()
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defer t.lock.Unlock()
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// If there's a duplicate request, we've just random-collided (or more probably,
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// we have a bug), report it. We could also add a metric, but we're not really
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// expecting ourselves to be buggy, so a noisy warning should be enough.
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if _, ok := t.pending[id]; ok {
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log.Error("Network request id collision", "protocol", t.protocol, "version", version, "code", reqCode, "id", id)
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return
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}
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// If we have too many pending requests, bail out instead of leaking memory
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if pending := len(t.pending); pending >= maxTrackedPackets {
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log.Error("Request tracker exceeded allowance", "pending", pending, "peer", peer, "protocol", t.protocol, "version", version, "code", reqCode)
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return
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}
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// Id doesn't exist yet, start tracking it
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t.pending[id] = &request{
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peer: peer,
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version: version,
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reqCode: reqCode,
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resCode: resCode,
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time: time.Now(),
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expire: t.expire.PushBack(id),
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}
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g := fmt.Sprintf("%s/%s/%d/%#02x", trackedGaugeName, t.protocol, version, reqCode)
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metrics.GetOrRegisterGauge(g, nil).Inc(1)
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// If we've just inserted the first item, start the expiration timer
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if t.wake == nil {
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t.wake = time.AfterFunc(t.timeout, t.clean)
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}
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}
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// clean is called automatically when a preset time passes without a response
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// being dleivered for the first network request.
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func (t *Tracker) clean() {
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t.lock.Lock()
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||||
defer t.lock.Unlock()
|
||||
|
||||
// Expire anything within a certain threshold (might be no items at all if
|
||||
// we raced with the delivery)
|
||||
for t.expire.Len() > 0 {
|
||||
// Stop iterating if the next pending request is still alive
|
||||
var (
|
||||
head = t.expire.Front()
|
||||
id = head.Value.(uint64)
|
||||
req = t.pending[id]
|
||||
)
|
||||
if time.Since(req.time) < t.timeout+5*time.Millisecond {
|
||||
break
|
||||
}
|
||||
// Nope, dead, drop it
|
||||
t.expire.Remove(head)
|
||||
delete(t.pending, id)
|
||||
|
||||
g := fmt.Sprintf("%s/%s/%d/%#02x", trackedGaugeName, t.protocol, req.version, req.reqCode)
|
||||
metrics.GetOrRegisterGauge(g, nil).Dec(1)
|
||||
|
||||
m := fmt.Sprintf("%s/%s/%d/%#02x", lostMeterName, t.protocol, req.version, req.reqCode)
|
||||
metrics.GetOrRegisterMeter(m, nil).Mark(1)
|
||||
}
|
||||
t.schedule()
|
||||
}
|
||||
|
||||
// schedule starts a timer to trigger on the expiration of the first network
|
||||
// packet.
|
||||
func (t *Tracker) schedule() {
|
||||
if t.expire.Len() == 0 {
|
||||
t.wake = nil
|
||||
return
|
||||
}
|
||||
t.wake = time.AfterFunc(time.Until(t.pending[t.expire.Front().Value.(uint64)].time.Add(t.timeout)), t.clean)
|
||||
}
|
||||
|
||||
// Fulfil fills a pending request, if any is available, reporting on various metrics.
|
||||
func (t *Tracker) Fulfil(peer string, version uint, code uint64, id uint64) {
|
||||
if !metrics.Enabled {
|
||||
return
|
||||
}
|
||||
t.lock.Lock()
|
||||
defer t.lock.Unlock()
|
||||
|
||||
// If it's a non existing request, track as stale response
|
||||
req, ok := t.pending[id]
|
||||
if !ok {
|
||||
m := fmt.Sprintf("%s/%s/%d/%#02x", staleMeterName, t.protocol, version, code)
|
||||
metrics.GetOrRegisterMeter(m, nil).Mark(1)
|
||||
return
|
||||
}
|
||||
// If the response is funky, it might be some active attack
|
||||
if req.peer != peer || req.version != version || req.resCode != code {
|
||||
log.Warn("Network response id collision",
|
||||
"have", fmt.Sprintf("%s:%s/%d:%d", peer, t.protocol, version, code),
|
||||
"want", fmt.Sprintf("%s:%s/%d:%d", peer, t.protocol, req.version, req.resCode),
|
||||
)
|
||||
return
|
||||
}
|
||||
// Everything matches, mark the request serviced and meter it
|
||||
t.expire.Remove(req.expire)
|
||||
if req.expire.Prev() == nil {
|
||||
t.wake.Stop()
|
||||
t.schedule()
|
||||
}
|
||||
g := fmt.Sprintf("%s/%s/%d/%#02x", trackedGaugeName, t.protocol, req.version, req.reqCode)
|
||||
metrics.GetOrRegisterGauge(g, nil).Dec(1)
|
||||
|
||||
h := fmt.Sprintf("%s/%s/%d/%#02x", waitHistName, t.protocol, req.version, req.reqCode)
|
||||
sampler := func() metrics.Sample {
|
||||
return metrics.ResettingSample(
|
||||
metrics.NewExpDecaySample(1028, 0.015),
|
||||
)
|
||||
}
|
||||
metrics.GetOrRegisterHistogramLazy(h, nil, sampler).Update(time.Since(req.time).Microseconds())
|
||||
}
|
Loading…
Reference in New Issue
Block a user