first commit

internal/httpx/context.go

@@ -0,0 +1,14 @@
+package httpx
+
+import "context"
+
+type userIDKey struct{}
+
+func WithUserID(ctx context.Context, userID int64) context.Context {
+	return context.WithValue(ctx, userIDKey{}, userID)
+}
+
+func UserID(ctx context.Context) (int64, bool) {
+	v, ok := ctx.Value(userIDKey{}).(int64)
+	return v, ok
+}