| 1 | package extension |
| 2 | |
| 3 | import ( |
| 4 | "sync/atomic" |
| 5 | "time" |
| 6 | ) |
| 7 | |
| 8 | // LifecycleMetrics is a process-wide counter set for activation, drain, |
| 9 | // publish, and stale drops. Values are anonymous tallies only — no content. |
| 10 | type LifecycleMetrics struct { |
| 11 | Publishes atomic.Uint64 |
| 12 | Drains atomic.Uint64 |
| 13 | StaleDrops atomic.Uint64 |
| 14 | AdmissionRejected atomic.Uint64 |
| 15 | NoOpRebuilds atomic.Uint64 |
| 16 | FullRebuilds atomic.Uint64 |
| 17 | SubgraphRebuilds atomic.Uint64 |
| 18 | SidecarAdopts atomic.Uint64 |
| 19 | SidecarStarts atomic.Uint64 |
| 20 | ActivateNanos atomic.Uint64 // cumulative activation duration |
| 21 | ActivateCount atomic.Uint64 |
| 22 | DrainNanos atomic.Uint64 |
| 23 | DrainCount atomic.Uint64 |
| 24 | GraphBuildNanos atomic.Uint64 |
| 25 | GraphBuildCount atomic.Uint64 |
| 26 | PlanDiffNanos atomic.Uint64 |
| 27 | PlanDiffCount atomic.Uint64 |
| 28 | } |
| 29 | |
| 30 | // DefaultLifecycleMetrics is the process-wide metrics instance. |
| 31 | var DefaultLifecycleMetrics = &LifecycleMetrics{} |
| 32 | |
| 33 | // Snapshot returns a plain copy for doctor/diagnostics. |
| 34 | type LifecycleMetricsSnapshot struct { |
| 35 | Publishes uint64 `json:"publishes"` |
| 36 | Drains uint64 `json:"drains"` |
| 37 | StaleDrops uint64 `json:"staleDrops"` |
| 38 | AdmissionRejected uint64 `json:"admissionRejected"` |
| 39 | NoOpRebuilds uint64 `json:"noOpRebuilds"` |
| 40 | FullRebuilds uint64 `json:"fullRebuilds"` |
| 41 | SubgraphRebuilds uint64 `json:"subgraphRebuilds"` |
| 42 | SidecarAdopts uint64 `json:"sidecarAdopts"` |
| 43 | SidecarStarts uint64 `json:"sidecarStarts"` |
| 44 | ActivateAvgNanos uint64 `json:"activateAvgNanos"` |
| 45 | DrainAvgNanos uint64 `json:"drainAvgNanos"` |
| 46 | GraphBuildAvgNs uint64 `json:"graphBuildAvgNanos"` |
| 47 | PlanDiffAvgNanos uint64 `json:"planDiffAvgNanos"` |
| 48 | } |
| 49 | |
| 50 | // Snapshot returns current counters with averaged timings. |
| 51 | func (m *LifecycleMetrics) Snapshot() LifecycleMetricsSnapshot { |
| 52 | if m == nil { |
| 53 | return LifecycleMetricsSnapshot{} |
| 54 | } |
| 55 | avg := func(total, count uint64) uint64 { |
| 56 | if count == 0 { |
| 57 | return 0 |
| 58 | } |
| 59 | return total / count |
| 60 | } |
| 61 | return LifecycleMetricsSnapshot{ |
| 62 | Publishes: m.Publishes.Load(), |
| 63 | Drains: m.Drains.Load(), |
| 64 | StaleDrops: m.StaleDrops.Load(), |
| 65 | AdmissionRejected: m.AdmissionRejected.Load(), |
| 66 | NoOpRebuilds: m.NoOpRebuilds.Load(), |
| 67 | FullRebuilds: m.FullRebuilds.Load(), |
| 68 | SubgraphRebuilds: m.SubgraphRebuilds.Load(), |
| 69 | SidecarAdopts: m.SidecarAdopts.Load(), |
| 70 | SidecarStarts: m.SidecarStarts.Load(), |
| 71 | ActivateAvgNanos: avg(m.ActivateNanos.Load(), m.ActivateCount.Load()), |
| 72 | DrainAvgNanos: avg(m.DrainNanos.Load(), m.DrainCount.Load()), |
| 73 | GraphBuildAvgNs: avg(m.GraphBuildNanos.Load(), m.GraphBuildCount.Load()), |
| 74 | PlanDiffAvgNanos: avg(m.PlanDiffNanos.Load(), m.PlanDiffCount.Load()), |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | // Observe records an elapsed duration into the named cumulative timer. |
| 79 | func (m *LifecycleMetrics) ObserveActivate(d time.Duration) { |
| 80 | if m == nil { |
| 81 | return |
| 82 | } |
| 83 | m.ActivateNanos.Add(uint64(d.Nanoseconds())) |
| 84 | m.ActivateCount.Add(1) |
| 85 | } |
| 86 | |
| 87 | // ObserveDrain records drain duration. |
| 88 | func (m *LifecycleMetrics) ObserveDrain(d time.Duration) { |
| 89 | if m == nil { |
| 90 | return |
| 91 | } |
| 92 | m.DrainNanos.Add(uint64(d.Nanoseconds())) |
| 93 | m.DrainCount.Add(1) |
| 94 | } |
| 95 | |
| 96 | // ObserveGraphBuild records dependency graph build duration. |
| 97 | func (m *LifecycleMetrics) ObserveGraphBuild(d time.Duration) { |
| 98 | if m == nil { |
| 99 | return |
| 100 | } |
| 101 | m.GraphBuildNanos.Add(uint64(d.Nanoseconds())) |
| 102 | m.GraphBuildCount.Add(1) |
| 103 | } |
| 104 | |
| 105 | // ObservePlanDiff records plan diff duration. |
| 106 | func (m *LifecycleMetrics) ObservePlanDiff(d time.Duration) { |
| 107 | if m == nil { |
| 108 | return |
| 109 | } |
| 110 | m.PlanDiffNanos.Add(uint64(d.Nanoseconds())) |
| 111 | m.PlanDiffCount.Add(1) |
| 112 | } |
| 113 |