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The status page showed route churn per second as a one-minute moving average, so a quiet feed gave a fraction such as 0.1. The average was correct. The metrics tracker now also counts prefix announcements and withdrawals, from all peers, in each clock minute. /api/v1/stats reports the count for the last full minute as route_churn_per_min in stream, in place of route_churn_per_sec. The status page shows it as "Route Churn/min". The status and home pages round messages and updates per second to whole numbers. Model: opus-5-5
87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package metrics
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import (
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"sync"
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"testing"
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"time"
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)
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// TestChurnPerMinuteCountsLastFullMinute announces and withdraws prefixes on
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// an injected clock and expects each minute's whole count once that minute
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// has ended, and 0 for a minute with none.
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func TestChurnPerMinuteCountsLastFullMinute(t *testing.T) {
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t.Parallel()
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now := time.Date(2026, 10, 26, 12, 0, 30, 0, time.UTC)
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tracker := New()
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tracker.churnPerMinute.now = func() time.Time { return now }
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expectChurn := func(want int, why string) {
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t.Helper()
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got := tracker.GetChurnPerMinute()
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if got != want {
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t.Fatalf("at %s churn = %d, want %d: %s",
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now.Format(time.TimeOnly), got, want, why)
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}
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}
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const firstMinuteChurn = 2
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tracker.RecordAnnouncement()
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tracker.RecordWithdrawal()
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expectChurn(0, "12:00 has not ended")
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now = time.Date(2026, 10, 26, 12, 1, 59, 0, time.UTC)
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tracker.RecordAnnouncement()
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expectChurn(firstMinuteChurn, "12:00 had one announcement and one withdrawal")
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now = time.Date(2026, 10, 26, 12, 2, 0, 0, time.UTC)
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expectChurn(1, "12:01 had one announcement")
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now = time.Date(2026, 10, 26, 12, 4, 0, 0, time.UTC)
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expectChurn(0, "12:03 had none")
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tracker.RecordWithdrawal()
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now = time.Date(2026, 10, 26, 12, 6, 0, 0, time.UTC)
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expectChurn(0, "12:05 had none, though 12:04 had one withdrawal")
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}
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// TestChurnPerMinuteCountsConcurrentRecords announces prefixes from several
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// goroutines at once and expects every one counted.
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func TestChurnPerMinuteCountsConcurrentRecords(t *testing.T) {
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t.Parallel()
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const (
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goroutines = 8
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recordsPerGoroutine = 1000
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)
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now := time.Date(2026, 10, 26, 12, 0, 0, 0, time.UTC)
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tracker := New()
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tracker.churnPerMinute.now = func() time.Time { return now }
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var wg sync.WaitGroup
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for range goroutines {
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wg.Go(func() {
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for range recordsPerGoroutine {
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tracker.RecordAnnouncement()
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}
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})
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}
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wg.Wait()
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now = now.Add(time.Minute)
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want := goroutines * recordsPerGoroutine
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if got := tracker.GetChurnPerMinute(); got != want {
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t.Fatalf("churn = %d, want %d", got, want)
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}
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}
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