prepare code skeleton to develop remaining managers

notice.go

@@ -0,0 +1,52 @@
+package prism
+
+import (
+	"context"
+	"sync"
+	"time"
+)
+
+type NoticeReceived struct {
+	Message string
+	At      time.Time
+}
+
+type Notice struct {
+	PeerID    string
+	Message   string
+	Timestamp time.Time
+}
+
+type NoticeHandler struct {
+	envoy   *Envoy
+	inbox   <-chan InboxMessage
+	notices chan Notice
+
+	ctx    context.Context
+	cancel context.CancelFunc
+	wg     sync.WaitGroup
+}
+
+func NewNoticeHandler(e *Envoy) *NoticeHandler {
+	// SubscribeInbox([]string{"NOTICE"})
+	// make(chan Notice, 16)
+	// context.WithCancel from e.Context()
+	// wg.Add(1); go h.route()
+	return nil
+}
+
+func (h *NoticeHandler) Notices() <-chan Notice { return h.notices }
+
+func (h *NoticeHandler) Close() {
+	// h.cancel()
+	// h.wg.Wait()
+	// close(h.notices)
+}
+
+func (h *NoticeHandler) route() {
+	defer h.wg.Done()
+	// select ctx.Done | inbox msg
+	//   msg: envelope.FindNotice → on err continue
+	//         push Notice{PeerID, Message, time.Now()} to h.notices (blocking)
+	//         e.Observer().Record(e.PeerID(), NoticeReceived{...})
+}