mirror of
https://github.com/ethereum/go-ethereum.git
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c36f7bec7f
Switches to using counters so that the gauges don't cause any information to be lost. Counters can be used to calculate all sorts of metrics on Grafana. Which is also why min/avg/max logic is removed to make things simple and small here.
78 lines
2.6 KiB
Go
78 lines
2.6 KiB
Go
// Copyright 2025 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 stateless
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import (
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"maps"
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"slices"
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"sort"
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"strconv"
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"strings"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/metrics"
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)
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var accountTrieLeavesAtDepth [16]*metrics.Counter
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var storageTrieLeavesAtDepth [16]*metrics.Counter
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func init() {
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for i := 0; i < 16; i++ {
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accountTrieLeavesAtDepth[i] = metrics.NewRegisteredCounter("witness/trie/account/leaves/depth_"+strconv.Itoa(i), nil)
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storageTrieLeavesAtDepth[i] = metrics.NewRegisteredCounter("witness/trie/storage/leaves/depth_"+strconv.Itoa(i), nil)
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}
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}
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// WitnessStats aggregates statistics for account and storage trie accesses.
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type WitnessStats struct {
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accountTrieLeaves [16]int64
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storageTrieLeaves [16]int64
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}
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// NewWitnessStats creates a new WitnessStats collector.
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func NewWitnessStats() *WitnessStats {
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return &WitnessStats{}
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}
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// Add records trie access depths from the given node paths.
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// If `owner` is the zero hash, accesses are attributed to the account trie;
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// otherwise, they are attributed to the storage trie of that account.
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func (s *WitnessStats) Add(nodes map[string][]byte, owner common.Hash) {
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// Extract paths from the nodes map
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paths := slices.Collect(maps.Keys(nodes))
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sort.Strings(paths)
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for i, path := range paths {
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// If current path is a prefix of the next path, it's not a leaf.
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// The last path is always a leaf.
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if i == len(paths)-1 || !strings.HasPrefix(paths[i+1], paths[i]) {
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if owner == (common.Hash{}) {
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s.accountTrieLeaves[len(path)] += 1
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} else {
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s.storageTrieLeaves[len(path)] += 1
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}
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}
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}
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}
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// ReportMetrics reports the collected statistics to the global metrics registry.
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func (s *WitnessStats) ReportMetrics() {
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for i := 0; i < 16; i++ {
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accountTrieLeavesAtDepth[i].Inc(s.accountTrieLeaves[i])
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storageTrieLeavesAtDepth[i].Inc(s.storageTrieLeaves[i])
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}
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}
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