| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| #ifndef SRC_HUDDLY_HPK_MESSAGE_BUS_H_ |
| #define SRC_HUDDLY_HPK_MESSAGE_BUS_H_ |
| |
| #include <memory> |
| #include <string> |
| #include "hlink_vsc.h" |
| |
| namespace huddly { |
| namespace message_bus { |
| |
| bool Subscribe(HLinkVsc* hlink, const std::string& subscription); |
| bool Unsubscribe(HLinkVsc* hlink, const std::string& subscription); |
| |
| // Use ScopedSubscribe to automatically unsubscribe when the ScopedSubscribe |
| // object goes out of scope. Should be preferred in most cases over calling |
| // Unsubscribe directly. |
| class ScopedSubscribe { |
| public: |
| static std::unique_ptr<ScopedSubscribe> Create( |
| HLinkVsc* hlink, const std::string& subscription); |
| |
| ScopedSubscribe(const ScopedSubscribe&) = delete; |
| ScopedSubscribe& operator=(const ScopedSubscribe&) = delete; |
| |
| ~ScopedSubscribe(); |
| |
| private: |
| ScopedSubscribe(HLinkVsc* hlink, const std::string& subscription); |
| HLinkVsc* hlink_ = nullptr; |
| std::string subscription_; |
| }; |
| |
| } // namespace message_bus |
| } // namespace huddly |
| |
| #endif // SRC_HUDDLY_HPK_MESSAGE_BUS_H_ |