feat: add BVK exchange library

store_memory.go

@@ -0,0 +1,47 @@
+package mila
+
+import (
+	"context"
+	"sync"
+)
+
+type MemoryStore struct {
+	mu    sync.RWMutex
+	state ContentState
+	ready bool
+}
+
+func NewMemoryStore() *MemoryStore {
+	return &MemoryStore{}
+}
+
+func (s *MemoryStore) Get(ctx context.Context) (ContentState, error) {
+	select {
+	case <-ctx.Done():
+		return ContentState{}, ctx.Err()
+	default:
+	}
+
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	if !s.ready {
+		return ContentState{}, ErrNotReady
+	}
+	return s.state, nil
+}
+
+func (s *MemoryStore) Set(ctx context.Context, state ContentState) error {
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.state = state
+	s.ready = true
+	return nil
+}