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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "connections/implementation/base_bwu_handler.h"
#include <string>
#include <utility>
#include "connections/implementation/service_id_constants.h"
#include "internal/platform/logging.h"
namespace location {
namespace nearby {
namespace connections {
BaseBwuHandler::BaseBwuHandler(BwuNotifications bwu_notifications)
: bwu_notifications_(std::move(bwu_notifications)) {}
ByteArray BaseBwuHandler::InitializeUpgradedMediumForEndpoint(
ClientProxy* client, const std::string& service_id,
const std::string& endpoint_id) {
std::string upgrade_service_id = WrapInitiatorUpgradeServiceId(service_id);
// Perform any medium-specific handling in the child class.
ByteArray upgrade_path_available_frame =
HandleInitializeUpgradedMediumForEndpoint(client, upgrade_service_id,
endpoint_id);
if (!upgrade_path_available_frame.Empty()) {
upgrade_service_id_to_active_endpoint_ids_[upgrade_service_id].insert(
endpoint_id);
}
return upgrade_path_available_frame;
}
void BaseBwuHandler::RevertInitiatorState() {
for (const auto& pair : upgrade_service_id_to_active_endpoint_ids_) {
HandleRevertInitiatorStateForService(pair.first);
}
upgrade_service_id_to_active_endpoint_ids_.clear();
}
void BaseBwuHandler::RevertInitiatorState(const std::string& upgrade_service_id,
const std::string& endpoint_id) {
if (!IsInitiatorUpgradeServiceId(upgrade_service_id)) {
NEARBY_LOGS(ERROR)
<< "BaseBwuHandler::RevertInitiatorState: input service ID "
<< upgrade_service_id << " is not an BWU initiator ID; ignoring.";
return;
}
auto it = upgrade_service_id_to_active_endpoint_ids_.find(upgrade_service_id);
if (it == upgrade_service_id_to_active_endpoint_ids_.end() ||
it->second.empty()) {
return;
}
// If the last endpoint for the service has been reverted, alert the specific
// medium handler (child class) to perform any clean-up .
it->second.erase(endpoint_id);
if (it->second.empty()) {
upgrade_service_id_to_active_endpoint_ids_.erase(it);
HandleRevertInitiatorStateForService(upgrade_service_id);
}
}
void BaseBwuHandler::RevertResponderState(const std::string& service_id) {
HandleRevertInitiatorStateForService(service_id);
}
} // namespace connections
} // namespace nearby
} // namespace location
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