| // Copyright 2018 The Chromium 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 CHROMEOS_SERVICES_SECURE_CHANNEL_ACTIVE_CONNECTION_MANAGER_H_ |
| #define CHROMEOS_SERVICES_SECURE_CHANNEL_ACTIVE_CONNECTION_MANAGER_H_ |
| |
| #include <ostream> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "chromeos/services/secure_channel/client_connection_parameters.h" |
| #include "chromeos/services/secure_channel/connection_details.h" |
| #include "chromeos/services/secure_channel/public/mojom/secure_channel.mojom.h" |
| |
| namespace chromeos { |
| |
| namespace secure_channel { |
| |
| class AuthenticatedChannel; |
| |
| // Manages zero or more active connections to remote devices. Each connection |
| // can be shared among one or more clients so that the underlying resources for |
| // the connection to not need to be duplicated. |
| class ActiveConnectionManager { |
| public: |
| class Delegate { |
| public: |
| virtual ~Delegate() = default; |
| virtual void OnDisconnected( |
| const ConnectionDetails& connection_details) = 0; |
| }; |
| |
| enum class ConnectionState { |
| kActiveConnectionExists, |
| kNoConnectionExists, |
| kDisconnectingConnectionExists |
| }; |
| |
| virtual ~ActiveConnectionManager(); |
| |
| virtual ConnectionState GetConnectionState( |
| const ConnectionDetails& connection_details) const = 0; |
| |
| // Adds an active connection to be managed. A connection can only be added if |
| // GetConnectionState() returns kNoConnectionExists. |
| void AddActiveConnection( |
| std::unique_ptr<AuthenticatedChannel> authenticated_channel, |
| std::vector<std::unique_ptr<ClientConnectionParameters>> initial_clients, |
| const ConnectionDetails& connection_details); |
| |
| // Adds a client to an active connection. A client can only be added if |
| // GetConnectionState() returns kActiveConnectionExists. |
| void AddClientToChannel( |
| std::unique_ptr<ClientConnectionParameters> client_connection_parameters, |
| const ConnectionDetails& connection_details); |
| |
| protected: |
| ActiveConnectionManager(Delegate* delegate); |
| |
| // Actually adds the provided connection. By the time this function is called, |
| // it has already been verified that there is no existing connection. |
| virtual void PerformAddActiveConnection( |
| std::unique_ptr<AuthenticatedChannel> authenticated_channel, |
| std::vector<std::unique_ptr<ClientConnectionParameters>> initial_clients, |
| const ConnectionDetails& connection_details) = 0; |
| |
| // Actually adds the provided client/feature pair. By the time this function |
| // is called, it has already been verified that there an active connection |
| // exists. |
| virtual void PerformAddClientToChannel( |
| std::unique_ptr<ClientConnectionParameters> client_connection_parameters, |
| const ConnectionDetails& connection_details) = 0; |
| |
| void OnChannelDisconnected(const ConnectionDetails& connection_details); |
| |
| private: |
| Delegate* delegate_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ActiveConnectionManager); |
| }; |
| |
| std::ostream& operator<<( |
| std::ostream& stream, |
| const ActiveConnectionManager::ConnectionState& connection_state); |
| |
| } // namespace secure_channel |
| |
| } // namespace chromeos |
| |
| #endif // CHROMEOS_SERVICES_SECURE_CHANNEL_ACTIVE_CONNECTION_MANAGER_H_ |