snapshot of https://github.com/centrifugal/centrifugo.git (master, 2026-09-16; blobs > 131072B omitted)

internal/usage/metric.go

@@ -0,0 +1,41 @@
+package usage
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"fmt"
+	"sort"
+)
+
+// metric represents stats point.
+type metric struct {
+	Id       string   `json:"id"`
+	OrgId    int      `json:"org_id"`
+	Name     string   `json:"name"`
+	Metric   string   `json:"metric"`
+	Interval int      `json:"interval"`
+	Value    float64  `json:"value"`
+	Unit     string   `json:"unit"`
+	Time     int64    `json:"time"`
+	Type     string   `json:"mtype"`
+	Tags     []string `json:"tags"`
+}
+
+func (m *metric) SetId() {
+	sort.Strings(m.Tags)
+
+	buffer := bytes.NewBufferString(m.Metric)
+	buffer.WriteByte(0)
+	buffer.WriteString(m.Unit)
+	buffer.WriteByte(0)
+	buffer.WriteString(m.Type)
+	buffer.WriteByte(0)
+	_, _ = fmt.Fprintf(buffer, "%d", m.Interval)
+
+	for _, k := range m.Tags {
+		buffer.WriteByte(0)
+		buffer.WriteString(k)
+	}
+	hash := sha256.Sum256(buffer.Bytes())
+	m.Id = fmt.Sprintf("%d.%x", m.OrgId, hash[:16])
+}