interceptors: add ban

health: set services serving on start and not available on close

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

interceptors/ban/context.go

@@ -0,0 +1,34 @@
+package ban
+
+import (
+	"context"
+)
+
+type key struct{}
+
+type value struct {
+	ban   *ban
+	actor string
+	done  bool
+}
+
+func set(ctx context.Context, b *ban, actor string) context.Context {
+	return context.WithValue(ctx, key{}, &value{ban: b, actor: actor})
+}
+
+func Infraction(ctx context.Context, rule string) error {
+	v, ok := ctx.Value(key{}).(*value)
+	if !ok {
+		return nil
+	}
+	v.done = true
+	return v.ban.s.Infraction(v.actor, rule)
+}
+
+func Actor(ctx context.Context) string {
+	v, ok := ctx.Value(key{}).(*value)
+	if !ok {
+		return ""
+	}
+	return v.actor
+}