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/*
* Copyright 2015 - 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.api;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.WebSocketAdapter;
import org.traccar.Context;
import org.traccar.database.ConnectionManager;
import org.traccar.model.Device;
import org.traccar.model.Position;
import org.traccar.web.JsonConverter;
import javax.json.Json;
import javax.json.JsonObjectBuilder;
import java.util.Arrays;
import java.util.Collection;
public class AsyncSocket extends WebSocketAdapter implements ConnectionManager.UpdateListener {
private static final String KEY_DEVICES = "devices";
private static final String KEY_POSITIONS = "positions";
private Collection<Long> devices;
public AsyncSocket(long userId) {
devices = Context.getPermissionsManager().getDevicePermissions(userId);
}
@Override
public void onWebSocketConnect(Session session) {
super.onWebSocketConnect(session);
sendData(KEY_POSITIONS, Context.getConnectionManager().getInitialState(devices));
Context.getConnectionManager().addListener(devices, this);
}
@Override
public void onWebSocketClose(int statusCode, String reason) {
super.onWebSocketClose(statusCode, reason);
Context.getConnectionManager().removeListener(devices, this);
}
@Override
public void onUpdateDevice(Device device) {
sendData(KEY_DEVICES, Arrays.asList(device));
}
@Override
public void onUpdatePosition(Position position) {
sendData(KEY_POSITIONS, Arrays.asList(position));
}
private void sendData(String key, Collection<?> data) {
if (!data.isEmpty() && isConnected()) {
JsonObjectBuilder json = Json.createObjectBuilder();
json.add(key, JsonConverter.arrayToJson(data));
getRemote().sendString(json.build().toString(), null);
}
}
}
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