72 lines
2.8 KiB
Go
72 lines
2.8 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package raftboltdb
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import (
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"context"
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"time"
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"github.com/boltdb/bolt"
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metrics "github.com/hashicorp/go-metrics/compat"
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)
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const (
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defaultMetricsInterval = 5 * time.Second
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)
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// RunMetrics should be executed in a go routine and will periodically emit
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// metrics on the given interval until the context has been cancelled.
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func (b *BoltStore) RunMetrics(ctx context.Context, interval time.Duration) {
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if interval == 0 {
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interval = defaultMetricsInterval
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}
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tick := time.NewTicker(interval)
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defer tick.Stop()
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stats := b.emitMetrics(nil)
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for {
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select {
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case <-ctx.Done():
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return
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case <-tick.C:
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stats = b.emitMetrics(stats)
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}
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}
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}
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func (b *BoltStore) emitMetrics(prev *bolt.Stats) *bolt.Stats {
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newStats := b.conn.Stats()
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stats := newStats
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if prev != nil {
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stats = newStats.Sub(prev)
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}
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// freelist metrics
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metrics.SetGauge([]string{"raft", "boltdb", "numFreePages"}, float32(newStats.FreePageN))
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metrics.SetGauge([]string{"raft", "boltdb", "numPendingPages"}, float32(newStats.PendingPageN))
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metrics.SetGauge([]string{"raft", "boltdb", "freePageBytes"}, float32(newStats.FreeAlloc))
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metrics.SetGauge([]string{"raft", "boltdb", "freelistBytes"}, float32(newStats.FreelistInuse))
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// txn metrics
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metrics.IncrCounter([]string{"raft", "boltdb", "totalReadTxn"}, float32(stats.TxN))
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metrics.SetGauge([]string{"raft", "boltdb", "openReadTxn"}, float32(newStats.OpenTxN))
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// tx stats
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metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageCount"}, float32(newStats.TxStats.PageCount))
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metrics.SetGauge([]string{"raft", "boltdb", "txstats", "pageAlloc"}, float32(newStats.TxStats.PageAlloc))
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "cursorCount"}, float32(stats.TxStats.CursorCount))
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeCount"}, float32(stats.TxStats.NodeCount))
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "nodeDeref"}, float32(stats.TxStats.NodeDeref))
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "rebalance"}, float32(stats.TxStats.Rebalance))
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metrics.AddSample([]string{"raft", "boltdb", "txstats", "rebalanceTime"}, float32(stats.TxStats.RebalanceTime.Nanoseconds())/1000000)
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "split"}, float32(stats.TxStats.Split))
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "spill"}, float32(stats.TxStats.Spill))
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metrics.AddSample([]string{"raft", "boltdb", "txstats", "spillTime"}, float32(stats.TxStats.SpillTime.Nanoseconds())/1000000)
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metrics.IncrCounter([]string{"raft", "boltdb", "txstats", "write"}, float32(stats.TxStats.Write))
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metrics.AddSample([]string{"raft", "boltdb", "txstats", "writeTime"}, float32(stats.TxStats.WriteTime.Nanoseconds())/1000000)
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return &newStats
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}
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