| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package nagios |
| 4 | |
| 5 | import ( |
| 6 | "strings" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | type collectState struct { |
| 11 | nextAnniversary time.Time |
| 12 | nextDue time.Time |
| 13 | |
| 14 | serviceState string |
| 15 | jobState string |
| 16 | softAttempts int |
| 17 | retrying bool |
| 18 | maxAttempts int |
| 19 | |
| 20 | lastPerfValues []perfValueMeasureSet |
| 21 | lastPerfThresholdStates []perfThresholdStateSet |
| 22 | } |
| 23 | |
| 24 | func newCollectState(now time.Time, job JobConfig) collectState { |
| 25 | return collectState{ |
| 26 | nextAnniversary: now, |
| 27 | nextDue: now, |
| 28 | serviceState: nagiosStateUnknown, |
| 29 | jobState: nagiosStateUnknown, |
| 30 | maxAttempts: max(job.MaxCheckAttempts, 1), |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | func (s *collectState) due(now time.Time) bool { |
| 35 | return s.nextDue.IsZero() || !s.nextDue.After(now) |
| 36 | } |
| 37 | |
| 38 | func (s *collectState) currentServiceState() string { |
| 39 | if s == nil || s.serviceState == "" { |
| 40 | return nagiosStateUnknown |
| 41 | } |
| 42 | return s.serviceState |
| 43 | } |
| 44 | |
| 45 | func (s *collectState) currentJobState() string { |
| 46 | if s == nil || s.jobState == "" { |
| 47 | return nagiosStateUnknown |
| 48 | } |
| 49 | return s.jobState |
| 50 | } |
| 51 | |
| 52 | func (s *collectState) isRetrying() bool { |
| 53 | return s != nil && s.retrying |
| 54 | } |
| 55 | |
| 56 | func (s *collectState) currentAttempt() int { |
| 57 | if s == nil { |
| 58 | return 1 |
| 59 | } |
| 60 | if strings.EqualFold(s.serviceState, nagiosStateOK) || s.serviceState == "" { |
| 61 | return 1 |
| 62 | } |
| 63 | attempt := s.softAttempts |
| 64 | if attempt <= 0 { |
| 65 | attempt = 1 |
| 66 | } |
| 67 | if s.retrying { |
| 68 | attempt++ |
| 69 | } |
| 70 | if attempt > s.maxAttempts { |
| 71 | return s.maxAttempts |
| 72 | } |
| 73 | return attempt |
| 74 | } |
| 75 | |
| 76 | func (s *collectState) macroState() macroState { |
| 77 | return macroState{ |
| 78 | ServiceState: s.currentServiceState(), |
| 79 | ServiceAttempt: s.currentAttempt(), |
| 80 | ServiceMaxAttempts: s.maxAttempts, |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | func (s *collectState) recordResult(serviceState, jobState string) { |
| 85 | serviceState = normalizeState(serviceState) |
| 86 | jobState = normalizeJobState(jobState) |
| 87 | if serviceState == nagiosStateOK { |
| 88 | s.softAttempts = 0 |
| 89 | s.retrying = false |
| 90 | } else { |
| 91 | s.softAttempts++ |
| 92 | if s.softAttempts >= s.maxAttempts { |
| 93 | s.retrying = false |
| 94 | } else { |
| 95 | s.retrying = true |
| 96 | } |
| 97 | } |
| 98 | s.serviceState = serviceState |
| 99 | s.jobState = jobState |
| 100 | } |
| 101 | |
| 102 | func (s *collectState) recordPeriodBlocked() { |
| 103 | s.jobState = jobStatePaused |
| 104 | for i := range s.lastPerfThresholdStates { |
| 105 | s.lastPerfThresholdStates[i].state = "" |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | func (s *collectState) rememberPerf(result perfRouteResult) { |
| 110 | s.lastPerfValues = append(s.lastPerfValues[:0], result.values...) |
| 111 | s.lastPerfThresholdStates = append(s.lastPerfThresholdStates[:0], result.thresholdStates...) |
| 112 | } |
| 113 | |
| 114 | func (s *collectState) perfValueSets() []perfValueMeasureSet { |
| 115 | return s.lastPerfValues |
| 116 | } |
| 117 | |
| 118 | func (s *collectState) perfThresholdStates() []perfThresholdStateSet { |
| 119 | return s.lastPerfThresholdStates |
| 120 | } |
| 121 | |
| 122 | func (s *collectState) completeRun(now time.Time, serviceState, jobState string, perf perfRouteResult, job JobConfig) { |
| 123 | s.recordResult(serviceState, jobState) |
| 124 | s.rememberPerf(perf) |
| 125 | if s.retrying { |
| 126 | s.scheduleRetry(now, job.RetryInterval.Duration()) |
| 127 | return |
| 128 | } |
| 129 | s.scheduleRegular(now, s.nextAnniversary, job.CheckInterval.Duration()) |
| 130 | } |
| 131 | |
| 132 | func normalizeState(state string) string { |
| 133 | switch strings.ToUpper(strings.TrimSpace(state)) { |
| 134 | case nagiosStateOK: |
| 135 | return nagiosStateOK |
| 136 | case nagiosStateWarning: |
| 137 | return nagiosStateWarning |
| 138 | case nagiosStateCritical: |
| 139 | return nagiosStateCritical |
| 140 | default: |
| 141 | return nagiosStateUnknown |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | func normalizeJobState(state string) string { |
| 146 | switch strings.ToUpper(strings.TrimSpace(state)) { |
| 147 | case jobStateTimeout: |
| 148 | return jobStateTimeout |
| 149 | case jobStatePaused: |
| 150 | return jobStatePaused |
| 151 | default: |
| 152 | return normalizeState(state) |
| 153 | } |
| 154 | } |