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/*
* Copyright 2023 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.broadcast;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.traccar.model.BaseModel;
import org.traccar.model.Device;
import org.traccar.model.Event;
import org.traccar.model.Permission;
import org.traccar.model.Position;
public abstract class BaseBroadcastService implements BroadcastService {
private final Set<BroadcastInterface> listeners = new HashSet<>();
@Override
public boolean singleInstance() {
return true;
}
@Override
public void registerListener(BroadcastInterface listener) {
listeners.add(listener);
}
@Override
public void updateDevice(boolean local, Device device) {
BroadcastMessage message = new BroadcastMessage();
message.setDevice(device);
sendMessage(message);
}
@Override
public void updatePosition(boolean local, Position position) {
BroadcastMessage message = new BroadcastMessage();
message.setPosition(position);
sendMessage(message);
}
@Override
public void updateEvent(boolean local, long userId, Event event) {
BroadcastMessage message = new BroadcastMessage();
message.setUserId(userId);
message.setEvent(event);
sendMessage(message);
}
@Override
public void updateCommand(boolean local, long deviceId) {
BroadcastMessage message = new BroadcastMessage();
message.setCommandDeviceId(deviceId);
sendMessage(message);
}
@Override
public void invalidateObject(boolean local, Class<? extends BaseModel> clazz, long id) {
BroadcastMessage message = new BroadcastMessage();
message.setChanges(Map.of(Permission.getKey(clazz), id));
sendMessage(message);
}
@Override
public void invalidatePermission(
boolean local,
Class<? extends BaseModel> clazz1, long id1,
Class<? extends BaseModel> clazz2, long id2) {
BroadcastMessage message = new BroadcastMessage();
message.setChanges(Map.of(Permission.getKey(clazz1), id1, Permission.getKey(clazz2), id2));
sendMessage(message);
}
protected abstract void sendMessage(BroadcastMessage message);
protected void handleMessage(BroadcastMessage message) {
if (message.getDevice() != null) {
listeners.forEach(listener -> listener.updateDevice(false, message.getDevice()));
} else if (message.getPosition() != null) {
listeners.forEach(listener -> listener.updatePosition(false, message.getPosition()));
} else if (message.getUserId() != null && message.getEvent() != null) {
listeners.forEach(listener -> listener.updateEvent(false, message.getUserId(), message.getEvent()));
} else if (message.getCommandDeviceId() != null) {
listeners.forEach(listener -> listener.updateCommand(false, message.getCommandDeviceId()));
} else if (message.getChanges() != null) {
var iterator = message.getChanges().entrySet().iterator();
if (iterator.hasNext()) {
var first = iterator.next();
if (iterator.hasNext()) {
var second = iterator.next();
listeners.forEach(listener -> listener.invalidatePermission(
false,
Permission.getKeyClass(first.getKey()), first.getValue(),
Permission.getKeyClass(second.getKey()), second.getValue()));
} else {
listeners.forEach(listener -> listener.invalidateObject(
false,
Permission.getKeyClass(first.getKey()), first.getValue()));
}
}
}
}
}
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