| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package functions |
| 4 | |
| 5 | import "github.com/netdata/netdata/go/plugins/pkg/metrix" |
| 6 | |
| 7 | const functionsRuntimeMetricPrefix = "netdata.go.plugin.framework.functions.manager" |
| 8 | |
| 9 | type managerRuntimeMetrics struct { |
| 10 | invocationsActive metrix.StatefulGauge |
| 11 | invocationsAwaitingResult metrix.StatefulGauge |
| 12 | schedulerPending metrix.StatefulGauge |
| 13 | |
| 14 | functionCallsTotal metrix.StatefulCounter |
| 15 | cancelFallbackTotal metrix.StatefulCounter |
| 16 | lateTerminalDropped metrix.StatefulCounter |
| 17 | duplicateUIDIgnored metrix.StatefulCounter |
| 18 | } |
| 19 | |
| 20 | func newManagerRuntimeMetrics(store metrix.RuntimeStore) *managerRuntimeMetrics { |
| 21 | if store == nil { |
| 22 | return nil |
| 23 | } |
| 24 | |
| 25 | meter := store.Write().StatefulMeter(functionsRuntimeMetricPrefix) |
| 26 | metrics := &managerRuntimeMetrics{ |
| 27 | invocationsActive: metrix.SeededGauge(meter, |
| 28 | "invocations_active", |
| 29 | metrix.WithDescription("Current number of active function invocations tracked by UID"), |
| 30 | metrix.WithChartFamily("Framework/Functions/Invocations"), |
| 31 | metrix.WithUnit("invocations"), |
| 32 | ), |
| 33 | invocationsAwaitingResult: metrix.SeededGauge(meter, |
| 34 | "invocations_awaiting_result", |
| 35 | metrix.WithDescription("Current number of active invocations waiting for terminal response"), |
| 36 | metrix.WithChartFamily("Framework/Functions/Invocations"), |
| 37 | metrix.WithUnit("invocations"), |
| 38 | ), |
| 39 | schedulerPending: metrix.SeededGauge(meter, |
| 40 | "scheduler_pending", |
| 41 | metrix.WithDescription("Current number of invocations pending in scheduler"), |
| 42 | metrix.WithChartFamily("Framework/Functions/Scheduler"), |
| 43 | metrix.WithUnit("invocations"), |
| 44 | ), |
| 45 | functionCallsTotal: metrix.SeededCounter(meter, |
| 46 | "calls_total", |
| 47 | metrix.WithDescription("Total number of parsed function call requests"), |
| 48 | metrix.WithChartFamily("Framework/Functions/Calls"), |
| 49 | metrix.WithUnit("calls"), |
| 50 | ), |
| 51 | cancelFallbackTotal: metrix.SeededCounter(meter, |
| 52 | "cancel_fallback_total", |
| 53 | metrix.WithDescription("Total number of function requests finalized by cancel fallback timer"), |
| 54 | metrix.WithChartFamily("Framework/Functions/Cancellation"), |
| 55 | metrix.WithUnit("requests"), |
| 56 | ), |
| 57 | lateTerminalDropped: metrix.SeededCounter(meter, |
| 58 | "late_terminal_dropped_total", |
| 59 | metrix.WithDescription("Total number of late terminal responses dropped by tombstone guard"), |
| 60 | metrix.WithChartFamily("Framework/Functions/Finalization"), |
| 61 | metrix.WithUnit("responses"), |
| 62 | ), |
| 63 | duplicateUIDIgnored: metrix.SeededCounter(meter, |
| 64 | "duplicate_uid_ignored_total", |
| 65 | metrix.WithDescription("Total number of duplicate transaction IDs ignored at admission"), |
| 66 | metrix.WithChartFamily("Framework/Functions/Admission"), |
| 67 | metrix.WithUnit("requests"), |
| 68 | ), |
| 69 | } |
| 70 | |
| 71 | return metrics |
| 72 | } |
| 73 | |
| 74 | func (m *Manager) observeInvocationsLocked() { |
| 75 | if m == nil || m.runtimeMetrics == nil { |
| 76 | return |
| 77 | } |
| 78 | |
| 79 | active := len(m.invState) |
| 80 | awaiting := 0 |
| 81 | for _, rec := range m.invState { |
| 82 | if rec != nil && rec.state == stateAwaitingResult { |
| 83 | awaiting++ |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | m.runtimeMetrics.invocationsActive.Set(float64(active)) |
| 88 | m.runtimeMetrics.invocationsAwaitingResult.Set(float64(awaiting)) |
| 89 | } |
| 90 | |
| 91 | func (m *Manager) observeSchedulerPending() { |
| 92 | if m == nil || m.runtimeMetrics == nil || m.scheduler == nil { |
| 93 | return |
| 94 | } |
| 95 | m.runtimeMetrics.schedulerPending.Set(float64(m.scheduler.pendingCount())) |
| 96 | } |
| 97 | |
| 98 | func (m *Manager) observeFunctionCall() { |
| 99 | if m == nil || m.runtimeMetrics == nil { |
| 100 | return |
| 101 | } |
| 102 | m.runtimeMetrics.functionCallsTotal.Add(1) |
| 103 | } |
| 104 | |
| 105 | func (m *Manager) observeCancelFallback() { |
| 106 | if m == nil || m.runtimeMetrics == nil { |
| 107 | return |
| 108 | } |
| 109 | m.runtimeMetrics.cancelFallbackTotal.Add(1) |
| 110 | } |
| 111 | |
| 112 | func (m *Manager) observeLateTerminalDropped() { |
| 113 | if m == nil || m.runtimeMetrics == nil { |
| 114 | return |
| 115 | } |
| 116 | m.runtimeMetrics.lateTerminalDropped.Add(1) |
| 117 | } |
| 118 | |
| 119 | func (m *Manager) observeDuplicateUIDIgnored() { |
| 120 | if m == nil || m.runtimeMetrics == nil { |
| 121 | return |
| 122 | } |
| 123 | m.runtimeMetrics.duplicateUIDIgnored.Add(1) |
| 124 | } |