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/*
* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef TEST_NETWORK_NETWORK_EMULATION_MANAGER_H_
#define TEST_NETWORK_NETWORK_EMULATION_MANAGER_H_
#include <cstdint>
#include <functional>
#include <list>
#include <map>
#include <memory>
#include <optional>
#include <set>
#include <utility>
#include <vector>
#include "absl/base/nullability.h"
#include "api/array_view.h"
#include "api/test/network_emulation/cross_traffic.h"
#include "api/test/network_emulation/network_emulation_interfaces.h"
#include "api/test/network_emulation_manager.h"
#include "api/test/simulated_network.h"
#include "api/test/time_controller.h"
#include "api/units/timestamp.h"
#include "rtc_base/ip_address.h"
#include "rtc_base/task_queue_for_test.h"
#include "rtc_base/task_utils/repeating_task.h"
#include "system_wrappers/include/clock.h"
#include "test/network/cross_traffic.h"
#include "test/network/emulated_network_manager.h"
#include "test/network/emulated_turn_server.h"
#include "test/network/network_emulation.h"
namespace webrtc {
namespace test {
class NetworkEmulationManagerImpl : public NetworkEmulationManager {
public:
explicit NetworkEmulationManagerImpl(NetworkEmulationManagerConfig config);
~NetworkEmulationManagerImpl();
EmulatedNetworkNode* CreateEmulatedNode(BuiltInNetworkBehaviorConfig config,
uint64_t random_seed = 1) override;
EmulatedNetworkNode* CreateEmulatedNode(
std::unique_ptr<NetworkBehaviorInterface> network_behavior) override;
SimulatedNetworkNode::Builder NodeBuilder() override;
EmulatedEndpointImpl* CreateEndpoint(EmulatedEndpointConfig config) override;
void EnableEndpoint(EmulatedEndpoint* endpoint) override;
void DisableEndpoint(EmulatedEndpoint* endpoint) override;
EmulatedRoute* CreateRoute(EmulatedEndpoint* from,
const std::vector<EmulatedNetworkNode*>& via_nodes,
EmulatedEndpoint* to) override;
EmulatedRoute* CreateRoute(
const std::vector<EmulatedNetworkNode*>& via_nodes) override;
EmulatedRoute* CreateDefaultRoute(
EmulatedEndpoint* from,
const std::vector<EmulatedNetworkNode*>& via_nodes,
EmulatedEndpoint* to) override;
void ClearRoute(EmulatedRoute* route) override;
TcpMessageRoute* CreateTcpRoute(EmulatedRoute* send_route,
EmulatedRoute* ret_route) override;
CrossTrafficRoute* CreateCrossTrafficRoute(
const std::vector<EmulatedNetworkNode*>& via_nodes) override;
CrossTrafficGenerator* StartCrossTraffic(
std::unique_ptr<CrossTrafficGenerator> generator) override;
void StopCrossTraffic(CrossTrafficGenerator* generator) override;
EmulatedNetworkManagerInterface* absl_nonnull
CreateEmulatedNetworkManagerInterface(
const std::vector<EmulatedEndpoint*>& endpoints) override;
void GetStats(
ArrayView<EmulatedEndpoint* const> endpoints,
std::function<void(EmulatedNetworkStats)> stats_callback) override;
void GetStats(
ArrayView<EmulatedNetworkNode* const> nodes,
std::function<void(EmulatedNetworkNodeStats)> stats_callback) override;
TimeController* time_controller() override { return time_controller_.get(); }
TimeMode time_mode() const override { return time_mode_; }
Timestamp Now() const;
EmulatedTURNServerInterface* CreateTURNServer(
EmulatedTURNServerConfig config) override;
private:
using CrossTrafficSource =
std::pair<std::unique_ptr<CrossTrafficGenerator>, RepeatingTaskHandle>;
std::optional<IPAddress> GetNextIPv4Address();
const TimeMode time_mode_;
const EmulatedNetworkStatsGatheringMode stats_gathering_mode_;
const std::unique_ptr<TimeController> time_controller_;
Clock* const clock_;
const bool fake_dtls_handshake_sizes_;
int next_node_id_;
RepeatingTaskHandle process_task_handle_;
uint32_t next_ip4_address_;
std::set<IPAddress> used_ip_addresses_;
// All objects can be added to the manager only when it is idle.
std::vector<std::unique_ptr<EmulatedEndpoint>> endpoints_;
std::vector<std::unique_ptr<EmulatedNetworkNode>> network_nodes_;
std::vector<std::unique_ptr<EmulatedRoute>> routes_;
std::vector<std::unique_ptr<CrossTrafficRoute>> traffic_routes_;
std::vector<CrossTrafficSource> cross_traffics_;
std::list<std::unique_ptr<TcpMessageRouteImpl>> tcp_message_routes_;
std::vector<std::unique_ptr<EndpointsContainer>> endpoints_containers_;
std::vector<std::unique_ptr<EmulatedNetworkManager>> network_managers_;
std::vector<std::unique_ptr<EmulatedTURNServer>> turn_servers_;
std::map<EmulatedEndpoint*, EmulatedNetworkManager*>
endpoint_to_network_manager_;
// Must be the last field, so it will be deleted first, because tasks
// in the TaskQueue can access other fields of the instance of this class.
TaskQueueForTest task_queue_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_NETWORK_NETWORK_EMULATION_MANAGER_H_
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