Alex Valiushko
4b7585df77
New gauge reflects endpoints state via labels: - open, when both peers are connected and ready to talk, and - connecting. when at least one peer hasn't connected yet. Corresponding client metrics are logged as - udprelay_endpoints_connecting - udprelay_endpoints_open Updates tailscale/corp#30820 Change-Id: Idb1baa90a38c97847e14f9b2390093262ad0ea23 Signed-off-by: Alex Valiushko <alexvaliushko@tailscale.com>
110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package udprelay
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import (
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"fmt"
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"slices"
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"testing"
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qt "github.com/frankban/quicktest"
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"tailscale.com/util/usermetric"
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)
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func TestMetricsLifecycle(t *testing.T) {
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c := qt.New(t)
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deregisterMetrics()
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r := &usermetric.Registry{}
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m := registerMetrics(r)
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// Expect certain prom names registered.
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have := r.MetricNames()
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want := []string{
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"tailscaled_peer_relay_forwarded_packets_total",
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"tailscaled_peer_relay_forwarded_bytes_total",
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"tailscaled_peer_relay_endpoints",
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}
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slices.Sort(have)
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slices.Sort(want)
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c.Assert(have, qt.CmpEquals(), want)
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// Validate countForwarded.
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m.countForwarded(true, true, 1, 1)
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c.Assert(m.forwarded44Bytes.Value(), qt.Equals, int64(1))
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c.Assert(m.forwarded44Packets.Value(), qt.Equals, int64(1))
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c.Assert(cMetricForwarded44Bytes.Value(), qt.Equals, int64(1))
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c.Assert(cMetricForwarded44Packets.Value(), qt.Equals, int64(1))
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m.countForwarded(true, false, 2, 2)
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c.Assert(m.forwarded46Bytes.Value(), qt.Equals, int64(2))
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c.Assert(m.forwarded46Packets.Value(), qt.Equals, int64(2))
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c.Assert(cMetricForwarded46Bytes.Value(), qt.Equals, int64(2))
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c.Assert(cMetricForwarded46Packets.Value(), qt.Equals, int64(2))
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m.countForwarded(false, true, 3, 3)
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c.Assert(m.forwarded64Bytes.Value(), qt.Equals, int64(3))
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c.Assert(m.forwarded64Packets.Value(), qt.Equals, int64(3))
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c.Assert(cMetricForwarded64Bytes.Value(), qt.Equals, int64(3))
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c.Assert(cMetricForwarded64Packets.Value(), qt.Equals, int64(3))
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m.countForwarded(false, false, 4, 4)
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c.Assert(m.forwarded66Bytes.Value(), qt.Equals, int64(4))
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c.Assert(m.forwarded66Packets.Value(), qt.Equals, int64(4))
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c.Assert(cMetricForwarded66Bytes.Value(), qt.Equals, int64(4))
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c.Assert(cMetricForwarded66Packets.Value(), qt.Equals, int64(4))
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// Validate client metrics deregistration.
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m.updateEndpoint(endpointClosed, endpointOpen)
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deregisterMetrics()
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c.Check(cMetricForwarded44Bytes.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded44Packets.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded46Bytes.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded46Packets.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded64Bytes.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded64Packets.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded66Bytes.Value(), qt.Equals, int64(0))
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c.Check(cMetricForwarded66Packets.Value(), qt.Equals, int64(0))
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for k := range cMetricEndpoints {
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c.Check(cMetricEndpoints[k].Value(), qt.Equals, int64(0))
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}
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}
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func TestMetricsEndpointTransitions(t *testing.T) {
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c := qt.New(t)
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var states = []endpointState{
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endpointClosed,
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endpointConnecting,
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endpointOpen,
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}
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for _, a := range states {
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for _, b := range states {
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t.Run(fmt.Sprintf("%s-%s", a, b), func(t *testing.T) {
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deregisterMetrics()
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r := &usermetric.Registry{}
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m := registerMetrics(r)
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m.updateEndpoint(a, b)
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var wantA, wantB int64
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switch {
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case a == b:
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wantA, wantB = 0, 0
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case a == endpointClosed:
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wantA, wantB = 0, 1
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case b == endpointClosed:
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wantA, wantB = -1, 0
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default:
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wantA, wantB = -1, 1
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}
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if a != endpointClosed {
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c.Check(m.endpoints[a].Value(), qt.Equals, wantA)
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c.Check(cMetricEndpoints[a].Value(), qt.Equals, wantA)
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}
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if b != endpointClosed {
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c.Check(m.endpoints[b].Value(), qt.Equals, wantB)
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c.Check(cMetricEndpoints[b].Value(), qt.Equals, wantB)
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}
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})
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}
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}
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}
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