func (s memorySeriesStorage) GetFingerprintsForLabelSet(l model.LabelSet) (fingerprints model.Fingerprints, err error) {
sets := []utility.Set{}
for k, v := range l {
signature := fmt.Sprintf("%s%s%s", k, reservedDelimiter, v)
values := s.labelPairToFingerprints[signature]
set := utility.Set{}
for _, fingerprint := range values {
set.Add(fingerprint)
}
sets = append(sets, set)
}
setCount := len(sets)
if setCount == 0 {
return
}
base := sets[0]
for i := 1; i < setCount; i++ {
base = base.Intersection(sets[i])
}
for _, e := range base.Elements() {
fingerprint := e.(model.Fingerprint)
fingerprints = append(fingerprints, fingerprint)
}
return
}
func (rule *AlertingRule) Eval(timestamp clientmodel.Timestamp, storage metric.PreloadingPersistence) (ast.Vector, error) {
// Get the raw value of the rule expression.
exprResult, err := rule.EvalRaw(timestamp, storage)
if err != nil {
return nil, err
}
rule.mutex.Lock()
defer rule.mutex.Unlock()
// Create pending alerts for any new vector elements in the alert expression
// or update the expression value for existing elements.
resultFingerprints := utility.Set{}
for _, sample := range exprResult {
fp := new(clientmodel.Fingerprint)
fp.LoadFromMetric(sample.Metric)
resultFingerprints.Add(*fp)
if alert, ok := rule.activeAlerts[*fp]; !ok {
labels := clientmodel.LabelSet{}
labels.MergeFromMetric(sample.Metric)
labels = labels.Merge(rule.Labels)
if _, ok := labels[clientmodel.MetricNameLabel]; ok {
delete(labels, clientmodel.MetricNameLabel)
}
rule.activeAlerts[*fp] = &Alert{
Name: rule.name,
Labels: labels,
State: PENDING,
ActiveSince: timestamp,
Value: sample.Value,
}
} else {
alert.Value = sample.Value
}
}
vector := ast.Vector{}
// Check if any pending alerts should be removed or fire now. Write out alert timeseries.
for fp, activeAlert := range rule.activeAlerts {
if !resultFingerprints.Has(fp) {
vector = append(vector, activeAlert.sample(timestamp, 0))
delete(rule.activeAlerts, fp)
continue
}
if activeAlert.State == PENDING && timestamp.Sub(activeAlert.ActiveSince) >= rule.holdDuration {
vector = append(vector, activeAlert.sample(timestamp, 0))
activeAlert.State = FIRING
}
vector = append(vector, activeAlert.sample(timestamp, 1))
}
return vector, nil
}
func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.LabelSet) (fps model.Fingerprints, err error) {
begin := time.Now()
defer func() {
duration := time.Since(begin)
recordOutcome(duration, err, map[string]string{operation: getFingerprintsForLabelSet, result: success}, map[string]string{operation: getFingerprintsForLabelSet, result: failure})
}()
sets := []utility.Set{}
for _, labelSetDTO := range model.LabelSetToDTOs(&labelSet) {
f, err := l.labelSetToFingerprints.Get(coding.NewProtocolBuffer(labelSetDTO))
if err != nil {
return fps, err
}
unmarshaled := &dto.FingerprintCollection{}
err = proto.Unmarshal(f, unmarshaled)
if err != nil {
return fps, err
}
set := utility.Set{}
for _, m := range unmarshaled.Member {
fp := model.NewFingerprintFromRowKey(*m.Signature)
set.Add(fp)
}
sets = append(sets, set)
}
numberOfSets := len(sets)
if numberOfSets == 0 {
return
}
base := sets[0]
for i := 1; i < numberOfSets; i++ {
base = base.Intersection(sets[i])
}
for _, e := range base.Elements() {
fingerprint := e.(model.Fingerprint)
fps = append(fps, fingerprint)
}
return
}
func (s *memorySeriesStorage) GetFingerprintsForLabelMatchers(labelMatchers metric.LabelMatchers) (clientmodel.Fingerprints, error) {
s.RLock()
defer s.RUnlock()
sets := []utility.Set{}
for _, matcher := range labelMatchers {
switch matcher.Type {
case metric.Equal:
set, ok := s.labelPairToFingerprints[metric.LabelPair{
Name: matcher.Name,
Value: matcher.Value,
}]
if !ok {
return nil, nil
}
sets = append(sets, set)
default:
values, err := s.getLabelValuesForLabelName(matcher.Name)
if err != nil {
return nil, err
}
matches := matcher.Filter(values)
if len(matches) == 0 {
return nil, nil
}
set := utility.Set{}
for _, v := range matches {
subset, ok := s.labelPairToFingerprints[metric.LabelPair{
Name: matcher.Name,
Value: v,
}]
if !ok {
return nil, nil
}
for fp := range subset {
set.Add(fp)
}
}
sets = append(sets, set)
}
}
setCount := len(sets)
if setCount == 0 {
return nil, nil
}
base := sets[0]
for i := 1; i < setCount; i++ {
base = base.Intersection(sets[i])
}
fingerprints := clientmodel.Fingerprints{}
for _, e := range base.Elements() {
fingerprint := e.(clientmodel.Fingerprint)
fingerprints = append(fingerprints, &fingerprint)
}
return fingerprints, nil
}
