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Implement matrix range and boundary fetching from metrics store.

This commit is contained in:
Julius Volz 2013-01-11 01:19:27 +01:00
parent 483bd81a44
commit 06162180ad
1 changed files with 55 additions and 4 deletions
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59
rules/ast/persistence_bridge.go
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@ -26,17 +26,29 @@ type PersistenceBridge struct {
// AST-global persistence to use.
var persistence *PersistenceBridge = nil
func (p *PersistenceBridge) GetValueAtTime(labels model.LabelSet, timestamp *time.Time, stalenessPolicy *metric.StalenessPolicy) ([]*model.Sample, error) {
func (p *PersistenceBridge) getMetricsWithLabels(labels model.LabelSet) ([]*model.Metric, error) {
fingerprints, err := p.persistence.GetFingerprintsForLabelSet(&labels)
if err != nil {
return nil, err
}
samples := []*model.Sample{}
metrics := []*model.Metric{}
for _, fingerprint := range fingerprints {
metric, err := p.persistence.GetMetricForFingerprint(fingerprint)
if err != nil {
return nil, err
}
metrics = append(metrics, metric)
}
return metrics, nil
}
func (p *PersistenceBridge) GetValueAtTime(labels model.LabelSet, timestamp *time.Time, stalenessPolicy *metric.StalenessPolicy) ([]*model.Sample, error) {
metrics, err := p.getMetricsWithLabels(labels)
if err != nil {
return nil, err
}
samples := []*model.Sample{}
for _, metric := range metrics {
sample, err := p.persistence.GetValueAtTime(metric, timestamp, stalenessPolicy)
if err != nil {
return nil, err
@ -50,11 +62,50 @@ func (p *PersistenceBridge) GetValueAtTime(labels model.LabelSet, timestamp *tim
}
func (p *PersistenceBridge) GetBoundaryValues(labels model.LabelSet, interval *model.Interval, stalenessPolicy *metric.StalenessPolicy) ([]*model.SampleSet, error) {
return []*model.SampleSet{}, nil // TODO real values
metrics, err := p.getMetricsWithLabels(labels)
if err != nil {
return nil, err
}
sampleSets := []*model.SampleSet{}
for _, metric := range metrics {
// TODO: change to GetBoundaryValues() once it has the right return type.
sampleSet, err := p.persistence.GetRangeValues(metric, interval, stalenessPolicy)
if err != nil {
return nil, err
}
if sampleSet == nil {
continue
}
// TODO remove when persistence return value is fixed.
sampleSet.Metric = *metric
sampleSets = append(sampleSets, sampleSet)
}
return sampleSets, nil
}
func (p *PersistenceBridge) GetRangeValues(labels model.LabelSet, interval *model.Interval, stalenessPolicy *metric.StalenessPolicy) ([]*model.SampleSet, error) {
return []*model.SampleSet{}, nil // TODO real values
metrics, err := p.getMetricsWithLabels(labels)
if err != nil {
return nil, err
}
sampleSets := []*model.SampleSet{}
for _, metric := range metrics {
sampleSet, err := p.persistence.GetRangeValues(metric, interval, stalenessPolicy)
if err != nil {
return nil, err
}
if sampleSet == nil {
continue
}
// TODO remove when persistence return value is fixed.
sampleSet.Metric = *metric
sampleSets = append(sampleSets, sampleSet)
}
return sampleSets, nil
}
func SetPersistence(p metric.MetricPersistence) {