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/*
* Copyright 2017 - 2020 Anton Tananaev (anton@traccar.org)
* Copyright 2017 Andrey Kunitsyn (andrey@traccar.org)
*
* 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.traccar.database;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.Context;
import org.traccar.model.Device;
import org.traccar.model.Group;
import org.traccar.model.Permission;
import org.traccar.model.BaseModel;
import org.traccar.storage.StorageException;
public abstract class ExtendedObjectManager<T extends BaseModel> extends SimpleObjectManager<T> {
private static final Logger LOGGER = LoggerFactory.getLogger(ExtendedObjectManager.class);
private final Map<Long, Set<Long>> deviceItems = new ConcurrentHashMap<>();
private final Map<Long, Set<Long>> deviceItemsWithGroups = new ConcurrentHashMap<>();
private final Map<Long, Set<Long>> groupItems = new ConcurrentHashMap<>();
protected ExtendedObjectManager(DataManager dataManager, Class<T> baseClass) {
super(dataManager, baseClass);
refreshExtendedPermissions();
}
public Set<Long> getAllDeviceItems(long deviceId) {
try {
readLock();
Set<Long> result = deviceItemsWithGroups.get(deviceId);
if (result != null) {
return new HashSet<>(result);
} else {
return new HashSet<>();
}
} finally {
readUnlock();
}
}
@Override
public void removeItem(long itemId) throws StorageException {
super.removeItem(itemId);
refreshExtendedPermissions();
}
public void refreshExtendedPermissions() {
if (getDataManager() != null) {
try {
Collection<Permission> databaseGroupPermissions =
getDataManager().getPermissions(Group.class, getBaseClass());
Collection<Permission> databaseDevicePermissions =
getDataManager().getPermissions(Device.class, getBaseClass());
writeLock();
groupItems.clear();
deviceItems.clear();
deviceItemsWithGroups.clear();
for (Permission groupPermission : databaseGroupPermissions) {
groupItems
.computeIfAbsent(groupPermission.getOwnerId(), key -> new HashSet<>())
.add(groupPermission.getPropertyId());
}
for (Permission devicePermission : databaseDevicePermissions) {
deviceItems
.computeIfAbsent(devicePermission.getOwnerId(), key -> new HashSet<>())
.add(devicePermission.getPropertyId());
deviceItemsWithGroups
.computeIfAbsent(devicePermission.getOwnerId(), key -> new HashSet<>())
.add(devicePermission.getPropertyId());
}
for (Device device : getDataManager().getObjects(Device.class)) {
long groupId = device.getGroupId();
while (groupId > 0) {
deviceItemsWithGroups
.computeIfAbsent(device.getId(), key -> new HashSet<>())
.addAll(groupItems.getOrDefault(groupId, new HashSet<>()));
Group group = Context.getGroupsManager().getById(groupId);
groupId = group != null ? group.getGroupId() : 0;
}
}
} catch (StorageException | ClassNotFoundException error) {
LOGGER.warn("Refresh permissions error", error);
} finally {
writeUnlock();
}
}
}
}
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