feat: edge gateway service

2026-04-02 19:18:42 +02:00
parent 8cde99936c
commit 436c97a38b
95 changed files with 20504 additions and 57 deletions
@@ -0,0 +1,48 @@
+package telemetry
+
+import (
+	"context"
+	"errors"
+
+	"galaxy/gateway/internal/push"
+
+	"go.opentelemetry.io/otel/attribute"
+)
+
+// PushObserver adapts Runtime to the push.Observer interface.
+type PushObserver struct {
+	runtime *Runtime
+}
+
+// NewPushObserver constructs a push stream observer backed by runtime.
+func NewPushObserver(runtime *Runtime) *PushObserver {
+	return &PushObserver{runtime: runtime}
+}
+
+// Registered records one active push stream.
+func (o *PushObserver) Registered(_ push.StreamBinding) {
+	if o == nil || o.runtime == nil {
+		return
+	}
+
+	o.runtime.AddActivePushStream(context.Background(), 1)
+}
+
+// Unregistered records one active-stream decrement and one closure reason for
+// hub-enforced shutdown, overflow, or revocation.
+func (o *PushObserver) Unregistered(_ push.StreamBinding, err error) {
+	if o == nil || o.runtime == nil {
+		return
+	}
+
+	o.runtime.AddActivePushStream(context.Background(), -1)
+
+	switch {
+	case errors.Is(err, push.ErrSubscriptionOverflow):
+		o.runtime.RecordPushStreamClosure(context.Background(), attribute.String("reason", "overflow"))
+	case errors.Is(err, push.ErrSubscriptionRevoked):
+		o.runtime.RecordPushStreamClosure(context.Background(), attribute.String("reason", "revoked"))
+	case errors.Is(err, push.ErrHubShuttingDown):
+		o.runtime.RecordPushStreamClosure(context.Background(), attribute.String("reason", "shutdown"))
+	}
+}