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/*
* Copyright 2017 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.sql.SQLException;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;
import org.traccar.Context;
import org.traccar.helper.Log;
import org.traccar.model.BaseModel;
import org.traccar.model.Group;
public class GroupsManager extends BaseObjectManager implements ManagableObjects {
private AtomicLong groupsLastUpdate = new AtomicLong();
private final long dataRefreshDelay;
public GroupsManager(DataManager dataManager) {
super(dataManager, Group.class);
dataRefreshDelay = Context.getConfig().getLong("database.refreshDelay",
DeviceManager.DEFAULT_REFRESH_DELAY) * 1000;
}
@Override
public Group getById(long groupId) {
return (Group) super.getById(groupId);
}
private void checkGroupCycles(BaseModel group) {
Set<Long> groups = new HashSet<>();
while (group != null) {
if (groups.contains(group.getId())) {
throw new IllegalArgumentException("Cycle in group hierarchy");
}
groups.add(group.getId());
group = getById(((Group) group).getGroupId());
}
}
private void updateGroupCache(boolean force) throws SQLException {
long lastUpdate = groupsLastUpdate.get();
if ((force || System.currentTimeMillis() - lastUpdate > dataRefreshDelay)
&& groupsLastUpdate.compareAndSet(lastUpdate, System.currentTimeMillis())) {
refreshItems();
}
}
@Override
public Set<Long> getAllItems() {
Set<Long> result = super.getAllItems();
if (result.isEmpty()) {
try {
updateGroupCache(true);
} catch (SQLException e) {
Log.warning(e);
}
result = super.getAllItems();
}
return result;
}
@Override
protected void addNewItem(BaseModel item) {
checkGroupCycles(item);
super.addNewItem(item);
}
@Override
protected void updateCachedItem(BaseModel item) {
checkGroupCycles(item);
super.updateCachedItem(item);
}
@Override
public Set<Long> getUserItems(long userId) {
if (Context.getPermissionsManager() != null) {
return Context.getPermissionsManager().getGroupPermissions(userId);
} else {
return new HashSet<>();
}
}
@Override
public Set<Long> getManagedItems(long userId) {
Set<Long> result = new HashSet<>();
result.addAll(getUserItems(userId));
for (long managedUserId : Context.getUsersManager().getUserItems(userId)) {
result.addAll(getUserItems(managedUserId));
}
return result;
}
}
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