feat: add metric plugin (#361)

plugin/metrics/segment/collector.go

@@ -0,0 +1,40 @@
+package segment
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/segmentio/analytics-go"
+	metric "github.com/usememos/memos/plugin/metrics"
+)
+
+var _ metric.Collector = (*collector)(nil)
+
+// collector is the metrics collector https://segment.com/.
+type collector struct {
+	client analytics.Client
+}
+
+// NewCollector creates a new instance of segment.
+func NewCollector(key string) metric.Collector {
+	client := analytics.New(key)
+
+	return &collector{
+		client: client,
+	}
+}
+
+// Collect will exec all the segment collector.
+func (c *collector) Collect(metric *metric.Metric) error {
+	properties := analytics.NewProperties()
+	for key, value := range metric.Labels {
+		properties.Set(key, value)
+	}
+
+	return c.client.Enqueue(analytics.Track{
+		Event:       string(metric.Name),
+		AnonymousId: uuid.NewString(),
+		Properties:  properties,
+		Timestamp:   time.Now().UTC(),
+	})
+}