| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package metrix |
| 4 | |
| 5 | import ( |
| 6 | "time" |
| 7 | ) |
| 8 | |
| 9 | type runtimeStoreView struct { |
| 10 | core *storeCore |
| 11 | backend *runtimeStoreBackend |
| 12 | } |
| 13 | |
| 14 | type runtimeStoreBackend struct { |
| 15 | core *storeCore |
| 16 | summarySketches map[string]*summaryQuantileSketch |
| 17 | retention runtimeRetentionPolicy |
| 18 | compaction runtimeCompactionPolicy |
| 19 | writesSinceCompaction uint64 |
| 20 | now func() time.Time |
| 21 | } |
| 22 | |
| 23 | type runtimeWriteView struct { |
| 24 | backend *runtimeStoreBackend |
| 25 | } |
| 26 | |
| 27 | type runtimeRetentionPolicy struct { |
| 28 | ttl time.Duration |
| 29 | maxSeries int |
| 30 | } |
| 31 | |
| 32 | type runtimeCompactionPolicy struct { |
| 33 | maxOverlayDepth int |
| 34 | maxOverlayWrites uint64 |
| 35 | } |
| 36 | |
| 37 | const ( |
| 38 | defaultRuntimeRetentionTTL = 30 * time.Minute |
| 39 | defaultRuntimeRetentionMaxSeries = 0 // disabled |
| 40 | defaultRuntimeCompactionDepth = 64 |
| 41 | defaultRuntimeCompactionWrites = 64 |
| 42 | ) |
| 43 | |
| 44 | // NewRuntimeStore creates a dedicated runtime/internal metrics store with |
| 45 | // stateful-only, immediate-commit write semantics. |
| 46 | func NewRuntimeStore() RuntimeStore { |
| 47 | core := &storeCore{ |
| 48 | instruments: make(map[string]*instrumentDescriptor), |
| 49 | } |
| 50 | core.snapshot.Store(&readSnapshot{ |
| 51 | collectMeta: CollectMeta{LastAttemptStatus: CollectStatusUnknown}, |
| 52 | series: make(map[string]*committedSeries), |
| 53 | }) |
| 54 | |
| 55 | backend := &runtimeStoreBackend{core: core} |
| 56 | backend.summarySketches = make(map[string]*summaryQuantileSketch) |
| 57 | backend.retention = runtimeRetentionPolicy{ |
| 58 | ttl: defaultRuntimeRetentionTTL, |
| 59 | maxSeries: defaultRuntimeRetentionMaxSeries, |
| 60 | } |
| 61 | backend.compaction = runtimeCompactionPolicy{ |
| 62 | maxOverlayDepth: defaultRuntimeCompactionDepth, |
| 63 | maxOverlayWrites: defaultRuntimeCompactionWrites, |
| 64 | } |
| 65 | backend.now = time.Now |
| 66 | return &runtimeStoreView{ |
| 67 | core: core, |
| 68 | backend: backend, |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | func (s *runtimeStoreView) Read(opts ...ReadOption) Reader { |
| 73 | cfg := resolveReadConfig(opts...) |
| 74 | snap := s.core.snapshot.Load() |
| 75 | if cfg.flatten { |
| 76 | snap = flattenSnapshot(snap) |
| 77 | } |
| 78 | return &storeReader{snap: snap, raw: cfg.raw, flattened: cfg.flatten, hostScopeKey: cfg.hostScopeKey} |
| 79 | } |
| 80 | |
| 81 | func (s *runtimeStoreView) Write() RuntimeWriter { |
| 82 | return &runtimeWriteView{backend: s.backend} |
| 83 | } |
| 84 | |
| 85 | func (w *runtimeWriteView) StatefulMeter(prefix string) StatefulMeter { |
| 86 | return &statefulMeter{backend: w.backend, prefix: prefix} |
| 87 | } |
| 88 | |
| 89 | func (r *runtimeStoreBackend) compileLabelSet(labels ...Label) LabelSet { |
| 90 | return compileLabelSetForOwner(r, labels...) |
| 91 | } |
| 92 | |
| 93 | func (r *runtimeStoreBackend) registerInstrument(name string, kind metricKind, mode metricMode, opts ...InstrumentOption) (*instrumentDescriptor, error) { |
| 94 | if mode != modeStateful { |
| 95 | return nil, errRuntimeSnapshotWrite |
| 96 | } |
| 97 | |
| 98 | cfg := instrumentConfig{} |
| 99 | for _, opt := range opts { |
| 100 | if opt != nil { |
| 101 | opt.apply(&cfg) |
| 102 | } |
| 103 | } |
| 104 | if cfg.freshnessSet && cfg.freshness != FreshnessCommitted { |
| 105 | return nil, errRuntimeFreshness |
| 106 | } |
| 107 | if cfg.windowSet && cfg.window == WindowCycle { |
| 108 | return nil, errRuntimeWindowCycle |
| 109 | } |
| 110 | |
| 111 | desc, err := r.core.registerInstrument(name, kind, modeStateful, opts...) |
| 112 | if err != nil { |
| 113 | return nil, err |
| 114 | } |
| 115 | if desc.freshness != FreshnessCommitted { |
| 116 | return nil, errRuntimeFreshness |
| 117 | } |
| 118 | return desc, nil |
| 119 | } |
| 120 | |
| 121 | func (r *runtimeStoreBackend) recordGaugeSet(desc *instrumentDescriptor, scope HostScope, value SampleValue, sets []LabelSet) { |
| 122 | mustFiniteSample(value) |
| 123 | |
| 124 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 125 | if err != nil { |
| 126 | panic(err) |
| 127 | } |
| 128 | scope = mustNormalizeHostScope(scope) |
| 129 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 130 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 131 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 132 | series.value = value |
| 133 | series.meta.LastSeenSuccessSeq = seq |
| 134 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 135 | }) |
| 136 | } |
| 137 | |
| 138 | func (r *runtimeStoreBackend) recordGaugeAdd(desc *instrumentDescriptor, scope HostScope, delta SampleValue, sets []LabelSet) { |
| 139 | mustFiniteSample(delta) |
| 140 | |
| 141 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 142 | if err != nil { |
| 143 | panic(err) |
| 144 | } |
| 145 | scope = mustNormalizeHostScope(scope) |
| 146 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 147 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 148 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 149 | series.value += delta |
| 150 | series.meta.LastSeenSuccessSeq = seq |
| 151 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 152 | }) |
| 153 | } |
| 154 | |
| 155 | func (r *runtimeStoreBackend) recordCounterObserveTotal(_ *instrumentDescriptor, _ HostScope, _ SampleValue, _ []LabelSet) { |
| 156 | panic(errRuntimeSnapshotWrite) |
| 157 | } |
| 158 | |
| 159 | func (r *runtimeStoreBackend) recordCounterAdd(desc *instrumentDescriptor, scope HostScope, delta SampleValue, sets []LabelSet) { |
| 160 | mustFiniteSample(delta) |
| 161 | |
| 162 | if delta < 0 { |
| 163 | panic(errCounterNegativeDelta) |
| 164 | } |
| 165 | |
| 166 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 167 | if err != nil { |
| 168 | panic(err) |
| 169 | } |
| 170 | scope = mustNormalizeHostScope(scope) |
| 171 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 172 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 173 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 174 | |
| 175 | hadCurrent := series.desc != nil && series.desc.kind == kindCounter && series.counterCurrentSeq > 0 |
| 176 | if hadCurrent { |
| 177 | series.counterPrevious = series.counterCurrent |
| 178 | series.counterPreviousSeq = series.counterCurrentSeq |
| 179 | series.counterHasPrev = true |
| 180 | } else { |
| 181 | series.counterPrevious = 0 |
| 182 | series.counterPreviousSeq = 0 |
| 183 | series.counterHasPrev = false |
| 184 | } |
| 185 | |
| 186 | series.counterCurrent += delta |
| 187 | // Runtime delta contiguity is per-series, not global store sequence. |
| 188 | series.counterCurrentSeq++ |
| 189 | series.value = series.counterCurrent |
| 190 | series.meta.LastSeenSuccessSeq = seq |
| 191 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 192 | }) |
| 193 | } |
| 194 | |
| 195 | func (r *runtimeStoreBackend) recordHistogramObservePoint(_ *instrumentDescriptor, _ HostScope, _ HistogramPoint, _ []LabelSet) { |
| 196 | panic(errRuntimeSnapshotWrite) |
| 197 | } |
| 198 | |
| 199 | func (r *runtimeStoreBackend) recordHistogramObserve(desc *instrumentDescriptor, scope HostScope, value SampleValue, sets []LabelSet) { |
| 200 | mustFiniteSample(value) |
| 201 | |
| 202 | schema := desc.histogram |
| 203 | if schema == nil || len(schema.bounds) == 0 { |
| 204 | panic(errHistogramBounds) |
| 205 | } |
| 206 | |
| 207 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 208 | if err != nil { |
| 209 | panic(err) |
| 210 | } |
| 211 | if labelsContainKey(labels, HistogramBucketLabel) { |
| 212 | panic(errHistogramLabelKey) |
| 213 | } |
| 214 | scope = mustNormalizeHostScope(scope) |
| 215 | |
| 216 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 217 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 218 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 219 | |
| 220 | if series.desc.histogram == nil || !equalHistogramBounds(series.desc.histogram.bounds, schema.bounds) { |
| 221 | panic("metrix: histogram schema drift detected") |
| 222 | } |
| 223 | if len(series.histogramCumulative) == 0 { |
| 224 | series.histogramCumulative = make([]SampleValue, len(schema.bounds)) |
| 225 | } |
| 226 | |
| 227 | idx := findHistogramBucket(schema.bounds, value) |
| 228 | if idx < len(series.histogramCumulative) { |
| 229 | for i := idx; i < len(series.histogramCumulative); i++ { |
| 230 | series.histogramCumulative[i]++ |
| 231 | } |
| 232 | } |
| 233 | series.histogramCount++ |
| 234 | series.histogramSum += value |
| 235 | series.meta.LastSeenSuccessSeq = seq |
| 236 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 237 | }) |
| 238 | } |
| 239 | |
| 240 | func (r *runtimeStoreBackend) recordSummaryObservePoint(_ *instrumentDescriptor, _ HostScope, _ SummaryPoint, _ []LabelSet) { |
| 241 | panic(errRuntimeSnapshotWrite) |
| 242 | } |
| 243 | |
| 244 | func (r *runtimeStoreBackend) recordSummaryObserve(desc *instrumentDescriptor, scope HostScope, value SampleValue, sets []LabelSet) { |
| 245 | mustFiniteSample(value) |
| 246 | |
| 247 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 248 | if err != nil { |
| 249 | panic(err) |
| 250 | } |
| 251 | if labelsContainKey(labels, SummaryQuantileLabel) { |
| 252 | panic(errSummaryLabelKey) |
| 253 | } |
| 254 | scope = mustNormalizeHostScope(scope) |
| 255 | |
| 256 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 257 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 258 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 259 | |
| 260 | series.summaryCount++ |
| 261 | series.summarySum += value |
| 262 | |
| 263 | qs := desc.summaryQuantiles() |
| 264 | if len(qs) > 0 { |
| 265 | sketch := r.summarySketches[key] |
| 266 | if sketch == nil { |
| 267 | sketch = newSummaryQuantileSketch(desc.summaryReservoirSize(), summarySketchSeed(key)) |
| 268 | r.summarySketches[key] = sketch |
| 269 | } |
| 270 | sketch.observe(value) |
| 271 | series.summaryQuantiles = sketch.quantiles(qs) |
| 272 | } else { |
| 273 | delete(r.summarySketches, key) |
| 274 | series.summaryQuantiles = nil |
| 275 | } |
| 276 | series.meta.LastSeenSuccessSeq = seq |
| 277 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 278 | }) |
| 279 | } |
| 280 | |
| 281 | func (r *runtimeStoreBackend) recordStateSetObserve(desc *instrumentDescriptor, scope HostScope, point StateSetPoint, sets []LabelSet) { |
| 282 | schema := desc.stateSet |
| 283 | if schema == nil { |
| 284 | panic(errStateSetSchema) |
| 285 | } |
| 286 | |
| 287 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 288 | if err != nil { |
| 289 | panic(err) |
| 290 | } |
| 291 | if labelsContainKey(labels, desc.name) { |
| 292 | panic(errStateSetLabelKey) |
| 293 | } |
| 294 | scope = mustNormalizeHostScope(scope) |
| 295 | states := normalizeStateSetPoint(point, schema) |
| 296 | |
| 297 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 298 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 299 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 300 | series.stateSetValues = cloneStateMap(states) |
| 301 | series.meta.LastSeenSuccessSeq = seq |
| 302 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 303 | }) |
| 304 | } |
| 305 | |
| 306 | func (r *runtimeStoreBackend) recordMeasureSetGaugeObservePoint(_ *instrumentDescriptor, _ HostScope, _ MeasureSetPoint, _ []LabelSet) { |
| 307 | panic(errRuntimeSnapshotWrite) |
| 308 | } |
| 309 | |
| 310 | func (r *runtimeStoreBackend) recordMeasureSetGaugeSetPoint(desc *instrumentDescriptor, scope HostScope, point MeasureSetPoint, sets []LabelSet) { |
| 311 | schema := desc.measureSet |
| 312 | if schema == nil || schema.semantics != MeasureSetSemanticsGauge { |
| 313 | panic(errMeasureSetSchema) |
| 314 | } |
| 315 | |
| 316 | values := normalizeMeasureSetPoint(point, schema) |
| 317 | |
| 318 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 319 | if err != nil { |
| 320 | panic(err) |
| 321 | } |
| 322 | if labelsContainKey(labels, MeasureSetFieldLabel) { |
| 323 | panic(errMeasureSetLabelKey) |
| 324 | } |
| 325 | scope = mustNormalizeHostScope(scope) |
| 326 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 327 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 328 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 329 | series.measureSetValues = append(series.measureSetValues[:0], values...) |
| 330 | series.meta.LastSeenSuccessSeq = seq |
| 331 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 332 | }) |
| 333 | } |
| 334 | |
| 335 | func (r *runtimeStoreBackend) recordMeasureSetGaugeAddPoint(desc *instrumentDescriptor, scope HostScope, delta MeasureSetPoint, sets []LabelSet) { |
| 336 | schema := desc.measureSet |
| 337 | if schema == nil || schema.semantics != MeasureSetSemanticsGauge { |
| 338 | panic(errMeasureSetSchema) |
| 339 | } |
| 340 | |
| 341 | values := normalizeMeasureSetPoint(delta, schema) |
| 342 | |
| 343 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 344 | if err != nil { |
| 345 | panic(err) |
| 346 | } |
| 347 | if labelsContainKey(labels, MeasureSetFieldLabel) { |
| 348 | panic(errMeasureSetLabelKey) |
| 349 | } |
| 350 | scope = mustNormalizeHostScope(scope) |
| 351 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 352 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 353 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 354 | if len(series.measureSetValues) == 0 { |
| 355 | series.measureSetValues = make([]SampleValue, len(schema.fields)) |
| 356 | } |
| 357 | for i, deltaValue := range values { |
| 358 | series.measureSetValues[i] += deltaValue |
| 359 | } |
| 360 | series.meta.LastSeenSuccessSeq = seq |
| 361 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 362 | }) |
| 363 | } |
| 364 | |
| 365 | func (r *runtimeStoreBackend) recordMeasureSetGaugeSetField(desc *instrumentDescriptor, scope HostScope, field string, value SampleValue, sets []LabelSet) { |
| 366 | schema := desc.measureSet |
| 367 | if schema == nil || schema.semantics != MeasureSetSemanticsGauge { |
| 368 | panic(errMeasureSetSchema) |
| 369 | } |
| 370 | |
| 371 | fieldIndex := mustMeasureSetFieldIndex(field, schema) |
| 372 | mustFiniteSample(value) |
| 373 | |
| 374 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 375 | if err != nil { |
| 376 | panic(err) |
| 377 | } |
| 378 | if labelsContainKey(labels, MeasureSetFieldLabel) { |
| 379 | panic(errMeasureSetLabelKey) |
| 380 | } |
| 381 | scope = mustNormalizeHostScope(scope) |
| 382 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 383 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 384 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 385 | if len(series.measureSetValues) == 0 { |
| 386 | series.measureSetValues = make([]SampleValue, len(schema.fields)) |
| 387 | } |
| 388 | series.measureSetValues[fieldIndex] = value |
| 389 | series.meta.LastSeenSuccessSeq = seq |
| 390 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 391 | }) |
| 392 | } |
| 393 | |
| 394 | func (r *runtimeStoreBackend) recordMeasureSetCounterObserveTotalPoint(_ *instrumentDescriptor, _ HostScope, _ MeasureSetPoint, _ []LabelSet) { |
| 395 | panic(errRuntimeSnapshotWrite) |
| 396 | } |
| 397 | |
| 398 | func (r *runtimeStoreBackend) recordMeasureSetCounterAddPoint(desc *instrumentDescriptor, scope HostScope, delta MeasureSetPoint, sets []LabelSet) { |
| 399 | schema := desc.measureSet |
| 400 | if schema == nil || schema.semantics != MeasureSetSemanticsCounter { |
| 401 | panic(errMeasureSetSchema) |
| 402 | } |
| 403 | |
| 404 | values := normalizeMeasureSetCounterDelta(delta, schema) |
| 405 | |
| 406 | labels, labelsKey, err := labelsFromSet(sets, r) |
| 407 | if err != nil { |
| 408 | panic(err) |
| 409 | } |
| 410 | if labelsContainKey(labels, MeasureSetFieldLabel) { |
| 411 | panic(errMeasureSetLabelKey) |
| 412 | } |
| 413 | scope = mustNormalizeHostScope(scope) |
| 414 | key := makeSeriesKey(scope.ScopeKey, desc.name, labelsKey) |
| 415 | r.commitRuntimeWrite(func(old, next *readSnapshot, seq uint64, nowUnixNano int64) { |
| 416 | series := runtimeEnsureSeriesMutable(old, next, key, desc.name, scope.ScopeKey, scope, labels, labelsKey, desc) |
| 417 | if len(series.measureSetValues) == 0 { |
| 418 | series.measureSetValues = make([]SampleValue, len(schema.fields)) |
| 419 | } |
| 420 | if series.measureSetCurrentSeq > 0 { |
| 421 | series.measureSetPreviousValues = append(series.measureSetPreviousValues[:0], series.measureSetValues...) |
| 422 | series.measureSetPreviousSeq = series.measureSetCurrentSeq |
| 423 | series.measureSetHasPrev = true |
| 424 | } else { |
| 425 | series.measureSetPreviousValues = nil |
| 426 | series.measureSetPreviousSeq = 0 |
| 427 | series.measureSetHasPrev = false |
| 428 | } |
| 429 | for i, deltaValue := range values { |
| 430 | series.measureSetValues[i] += deltaValue |
| 431 | } |
| 432 | series.measureSetCurrentSeq++ |
| 433 | series.meta.LastSeenSuccessSeq = seq |
| 434 | series.runtimeLastSeenUnixNano = nowUnixNano |
| 435 | }) |
| 436 | } |
| 437 | |
| 438 | func (r *runtimeStoreBackend) commitRuntimeWrite(apply func(old, next *readSnapshot, seq uint64, nowUnixNano int64)) { |
| 439 | r.core.mu.Lock() |
| 440 | defer r.core.mu.Unlock() |
| 441 | |
| 442 | oldSnap := r.core.snapshot.Load() |
| 443 | next := &readSnapshot{ |
| 444 | collectMeta: oldSnap.collectMeta, |
| 445 | series: make(map[string]*committedSeries, 1), |
| 446 | // byName index is built lazily by readers for runtime snapshots. |
| 447 | byName: nil, |
| 448 | runtimeBase: oldSnap, |
| 449 | runtimeDepth: oldSnap.runtimeDepth + 1, |
| 450 | } |
| 451 | |
| 452 | nowUnixNano := r.now().UnixNano() |
| 453 | r.core.sequence++ |
| 454 | seq := r.core.sequence |
| 455 | apply(oldSnap, next, seq, nowUnixNano) |
| 456 | |
| 457 | r.writesSinceCompaction++ |
| 458 | var evicted []string |
| 459 | if r.shouldCompactRuntimeSnapshot(next) { |
| 460 | next, evicted = r.compactRuntimeSnapshot(next, nowUnixNano) |
| 461 | r.writesSinceCompaction = 0 |
| 462 | } |
| 463 | for _, key := range evicted { |
| 464 | delete(r.summarySketches, key) |
| 465 | } |
| 466 | |
| 467 | next.collectMeta.LastAttemptSeq = seq |
| 468 | next.collectMeta.LastAttemptStatus = CollectStatusSuccess |
| 469 | next.collectMeta.LastSuccessSeq = seq |
| 470 | r.core.snapshot.Store(next) |
| 471 | } |
| 472 | |
| 473 | func runtimeEnsureSeriesMutable(old, next *readSnapshot, key, name, hostScopeKey string, hostScope HostScope, labels []Label, labelsKey string, desc *instrumentDescriptor) *committedSeries { |
| 474 | series := next.series[key] |
| 475 | if series != nil { |
| 476 | ensureSeriesMeta(series.desc, &series.meta) |
| 477 | return series |
| 478 | } |
| 479 | if existing, ok := lookupSnapshotSeries(old, key); ok { |
| 480 | series = cloneCommittedSeries(existing) |
| 481 | ensureSeriesMeta(series.desc, &series.meta) |
| 482 | next.series[key] = series |
| 483 | return series |
| 484 | } |
| 485 | series = &committedSeries{ |
| 486 | id: SeriesID(key), |
| 487 | hash64: seriesIDHash(SeriesID(key)), |
| 488 | key: key, |
| 489 | name: name, |
| 490 | hostScopeKey: hostScopeKey, |
| 491 | hostScope: cloneHostScope(hostScope), |
| 492 | labels: append([]Label(nil), labels...), |
| 493 | labelsKey: labelsKey, |
| 494 | desc: desc, |
| 495 | meta: baseSeriesMeta(desc), |
| 496 | } |
| 497 | next.series[key] = series |
| 498 | return series |
| 499 | } |
| 500 | |
| 501 | func (r *runtimeStoreBackend) shouldCompactRuntimeSnapshot(next *readSnapshot) bool { |
| 502 | if r.compaction.maxOverlayDepth > 0 && next.runtimeDepth >= r.compaction.maxOverlayDepth { |
| 503 | return true |
| 504 | } |
| 505 | if r.compaction.maxOverlayWrites > 0 && r.writesSinceCompaction >= r.compaction.maxOverlayWrites { |
| 506 | return true |
| 507 | } |
| 508 | return false |
| 509 | } |
| 510 | |
| 511 | func (r *runtimeStoreBackend) compactRuntimeSnapshot(snap *readSnapshot, nowUnixNano int64) (*readSnapshot, []string) { |
| 512 | series := snapshotSeriesView(snap) |
| 513 | evicted := applyRuntimeRetention(series, r.retention, nowUnixNano) |
| 514 | return &readSnapshot{ |
| 515 | collectMeta: snap.collectMeta, |
| 516 | series: series, |
| 517 | byName: nil, |
| 518 | runtimeBase: nil, |
| 519 | runtimeDepth: 0, |
| 520 | }, evicted |
| 521 | } |
| 522 | |
| 523 | func applyRuntimeRetention(series map[string]*committedSeries, policy runtimeRetentionPolicy, nowUnixNano int64) []string { |
| 524 | var evicted []string |
| 525 | |
| 526 | if policy.ttl > 0 { |
| 527 | cutoff := nowUnixNano - int64(policy.ttl) |
| 528 | for key, s := range series { |
| 529 | if s.runtimeLastSeenUnixNano <= cutoff { |
| 530 | delete(series, key) |
| 531 | evicted = append(evicted, key) |
| 532 | } |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | evictOldestSeries(series, policy.maxSeries, func(s *committedSeries) int64 { |
| 537 | return s.runtimeLastSeenUnixNano |
| 538 | }, func(key string) { |
| 539 | evicted = append(evicted, key) |
| 540 | }) |
| 541 | |
| 542 | if len(evicted) == 0 { |
| 543 | return nil |
| 544 | } |
| 545 | return evicted |
| 546 | } |
| 547 | |
| 548 | var _ RuntimeStore = (*runtimeStoreView)(nil) |
| 549 | var _ RuntimeWriter = (*runtimeWriteView)(nil) |
| 550 | var _ meterBackend = (*runtimeStoreBackend)(nil) |