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feat: use map instead of slice in metrics aggregator #11815

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Merged
merged 7 commits into from
Jan 29, 2024
Merged

feat: use map instead of slice in metrics aggregator #11815

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b936232
feat: use map instead slice in metrics aggregator
mtojek Jan 25, 2024
c90a41f
fix
mtojek Jan 25, 2024
f407b47
add store size gauge
mtojek Jan 25, 2024
12fcdab
Use struct key
mtojek Jan 25, 2024
628e4ec
Address PR comments
mtojek Jan 25, 2024
bf48edc
Address Spike's feedback
mtojek Jan 26, 2024
4d0d889
fix test
mtojek Jan 26, 2024
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Use struct key
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@mtojek
mtojek committed Jan 25, 2024
commit 12fcdab17f3d441c5b7618d259bb1a8abef79a70
58 changes: 41 additions & 17 deletions coderd/prometheusmetrics/aggregator.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@ package prometheusmetrics

import (
"context"
"fmt"
"strings"
"time"

Expand Down Expand Up @@ -32,7 +31,7 @@ const (
)

type MetricsAggregator struct {
store map[string]annotatedMetric
store map[metricKey]annotatedMetric

log slog.Logger
metricsCleanupInterval time.Duration
Expand Down Expand Up @@ -67,29 +66,54 @@ type annotatedMetric struct {
expiryDate time.Time
}

func hashKey(req *updateRequest, m *agentproto.Stats_Metric) string {
var sbLabels strings.Builder
for i, label := range m.GetLabels() {
_, _ = sbLabels.WriteString(label.Name)
_ = sbLabels.WriteByte('=')
_, _ = sbLabels.WriteString(label.Value)
type metricKey struct {
username string
workspaceName string
agentName string
templateName string

if i-1 != len(m.GetLabels()) {
_ = sbLabels.WriteByte(',')
}
metricName string
labelsStr string
}

func (m1 metricKey) Equal(m2 metricKey) bool {
return m1.metricName == m2.metricName &&
m1.labelsStr == m2.labelsStr &&
m1.username == m2.username &&
m1.workspaceName == m2.workspaceName &&
m1.agentName == m2.agentName &&
m1.templateName == m2.templateName
}

func hashKey(req *updateRequest, m *agentproto.Stats_Metric) metricKey {
var sb strings.Builder
for _, label := range m.GetLabels() {
_, _ = sb.WriteString(label.Name)
_ = sb.WriteByte('=')
_, _ = sb.WriteString(label.Value)
_ = sb.WriteByte(',')
}
labels := strings.TrimRight(sb.String(), ",")

return metricKey{
username: req.username,
workspaceName: req.workspaceName,
agentName: req.agentName,
templateName: req.templateName,
metricName: m.Name,
labelsStr: labels,
}
return fmt.Sprintf("%s|%s|%s|%s|%s|%s", req.username, req.workspaceName, req.agentName, req.templateName, m.GetName(), sbLabels.String())
}

var _ prometheus.Collector = new(MetricsAggregator)

func (am *annotatedMetric) is(req updateRequest, m *agentproto.Stats_Metric) bool {
return am.username == req.username &&
return am.Name == m.Name &&
agentproto.LabelsEqual(am.Labels, m.Labels) &&
am.username == req.username &&
am.workspaceName == req.workspaceName &&
am.agentName == req.agentName &&
am.templateName == req.templateName &&
am.Name == m.Name &&
agentproto.LabelsEqual(am.Labels, m.Labels)
am.templateName == req.templateName
}

func (am *annotatedMetric) asPrometheus() (prometheus.Metric, error) {
Expand Down Expand Up @@ -157,7 +181,7 @@ func NewMetricsAggregator(logger slog.Logger, registerer prometheus.Registerer,
log: logger.Named(loggerName),
metricsCleanupInterval: metricsCleanupInterval,

store: map[string]annotatedMetric{},
store: map[metricKey]annotatedMetric{},

collectCh: make(chan (chan []prometheus.Metric), sizeCollectCh),
updateCh: make(chan updateRequest, sizeUpdateCh),
Expand Down