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/*
* Copyright 2016 - 2022 Anton Tananaev (anton@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 org.traccar.config.Config;
import org.traccar.config.Keys;
import org.traccar.model.Device;
import org.traccar.session.DeviceState;
import org.traccar.storage.StorageException;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
public class DeviceManager extends BaseObjectManager<Device> {
private final long dataRefreshDelay;
private final AtomicLong devicesLastUpdate = new AtomicLong();
private final Map<Long, DeviceState> deviceStates = new ConcurrentHashMap<>();
public DeviceManager(Config config, DataManager dataManager) {
super(dataManager, Device.class);
dataRefreshDelay = config.getLong(Keys.DATABASE_REFRESH_DELAY) * 1000;
}
public void updateDeviceCache(boolean force) {
long lastUpdate = devicesLastUpdate.get();
if ((force || System.currentTimeMillis() - lastUpdate > dataRefreshDelay)
&& devicesLastUpdate.compareAndSet(lastUpdate, System.currentTimeMillis())) {
refreshItems();
}
}
@Override
public Set<Long> getAllItems() {
Set<Long> result = super.getAllItems();
if (result.isEmpty()) {
updateDeviceCache(true);
result = super.getAllItems();
}
return result;
}
public Collection<Device> getAllDevices() {
return getItems(getAllItems());
}
@Override
protected void updateCachedItem(Device device) {
Device cachedDevice = getById(device.getId());
cachedDevice.setName(device.getName());
cachedDevice.setGroupId(device.getGroupId());
cachedDevice.setCategory(device.getCategory());
cachedDevice.setContact(device.getContact());
cachedDevice.setPhone(device.getPhone());
cachedDevice.setModel(device.getModel());
cachedDevice.setDisabled(device.getDisabled());
cachedDevice.setAttributes(device.getAttributes());
cachedDevice.setUniqueId(device.getUniqueId());
}
@Override
protected void removeCachedItem(long deviceId) {
Device cachedDevice = getById(deviceId);
if (cachedDevice != null) {
super.removeCachedItem(deviceId);
}
}
public void updateDeviceStatus(Device device) throws StorageException {
getDataManager().updateDeviceStatus(device);
Device cachedDevice = getById(device.getId());
if (cachedDevice != null) {
cachedDevice.setStatus(device.getStatus());
}
}
public DeviceState getDeviceState(long deviceId) {
DeviceState deviceState = deviceStates.get(deviceId);
if (deviceState == null) {
deviceState = new DeviceState();
deviceStates.put(deviceId, deviceState);
}
return deviceState;
}
public void setDeviceState(long deviceId, DeviceState deviceState) {
deviceStates.put(deviceId, deviceState);
}
}
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