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/*
* Copyright (C) 2021 Samsung Electronics
* 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
* http://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
*/
package org.onap.a1pesimulator.service.ue;
import java.util.Collection;
import java.util.Optional;
import java.util.stream.Collectors;
import org.onap.a1pesimulator.data.cell.CellDetails;
import org.onap.a1pesimulator.data.ue.RanUserEquipment;
import org.onap.a1pesimulator.data.ue.UserEquipment;
import org.onap.a1pesimulator.service.cell.RanCellsHolder;
import org.onap.a1pesimulator.service.distance.DistanceService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
@Service
public class RanUeServiceImpl implements RanUeService {
private static final Logger log = LoggerFactory.getLogger(RanUeServiceImpl.class);
private final RanUeHolder ueHolder;
private final RanCellsHolder ranCellsHolder;
private final DistanceService distanceService;
public RanUeServiceImpl(RanUeHolder ueHolder, RanCellsHolder ranCellsHolder, DistanceService distanceService) {
this.ueHolder = ueHolder;
this.ranCellsHolder = ranCellsHolder;
this.distanceService = distanceService;
}
@Override
public Collection<UserEquipment> getUserEquipments() {
return ueHolder.getUserEquipments();
}
@Override
public RanUserEquipment getUes() {
Collection<UserEquipment> uesCollection = ueHolder.getUserEquipments();
return new RanUserEquipment(uesCollection, uesCollection.size());
}
@Override
public Collection<UserEquipment> getUserEquipmentsConnectedToCell(String cellId) {
return ueHolder.getUserEquipmentsConnectedToCell(cellId);
}
@Override
public Optional<UserEquipment> getUserEquipment(String id) {
Optional<UserEquipment> userEquipment = ueHolder.getUserEquipment(id);
userEquipment.ifPresent(ue -> ue.setCellsInRange(getCellsIdsInRange(ue)));
return userEquipment;
}
@Override
public void handover(String ueId, String cellId) {
Optional<UserEquipment> userEquipment = getUserEquipment(ueId);
if (!userEquipment.isPresent()) {
log.warn("Cannot handover ue {} to cell {}, because ue does not exist!", ueId, cellId);
return;
}
userEquipment.get().setCellId(cellId);
}
@Override
public boolean canHandover(String ueId, String cellId) {
Optional<UserEquipment> userEquipment = getUserEquipment(ueId);
return userEquipment.map(equipment -> equipment.getCellsInRange().stream().anyMatch(cellId::equalsIgnoreCase))
.orElse(false);
}
private Collection<String> getCellsIdsInRange(UserEquipment ue) {
return ranCellsHolder.getAllCells().stream().filter(cell -> distanceService.isInRange(cell, ue))
.map(CellDetails::getId).collect(Collectors.toList());
}
}
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