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package org.traccar.flespi;
import com.ning.http.client.AsyncCompletionHandler;
import com.ning.http.client.Response;
import org.traccar.Context;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Position;
import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonNumber;
import javax.json.JsonReader;
import javax.json.JsonArray;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
public class FlespiClient {
private final String url;
private final String token;
private final String channel_id;
private final ScheduledExecutorService pullChannelExecutor = Executors.newScheduledThreadPool(5);
private ScheduledFuture<?> pullTask;
private Integer pullDelay = 5;
private int nextKey;
public FlespiClient(String url, String token, String channelId) {
this.channel_id = channelId;
this.url = url + "/gw/channels/" + channelId + "/messages?data={\"limit_count\":1000000,"
+ "\"limit_size\":100000000,\"delete\":true,\"timeout\":25,\"curr_key\":%d}";
this.token = "FlespiToken " + token;
schedulePull();
}
private void schedulePull() {
pullTask = pullChannelExecutor.scheduleAtFixedRate(new ChannelPullTask(this), 1, pullDelay, TimeUnit.SECONDS);
}
public void stopPullTask() {
if (pullTask != null) {
pullTask.cancel(false);
}
}
protected synchronized void channelPull() {
Context.getAsyncHttpClient().prepareGet(String.format(this.url, nextKey))
.addHeader("Authorization", this.token)
.execute(new AsyncCompletionHandler() {
@Override
public Object onCompleted(Response response) throws Exception {
try (JsonReader reader = Json.createReader(response.getResponseBodyAsStream())) {
JsonObject object = reader.readObject();
JsonArray result = object.getJsonArray("result");
nextKey = object.getInt("next_key", nextKey);
Log.debug(String.format("channelPull next_key=%d msgs_count=%d", nextKey, result.size()));
for (int i = 0; i < result.size(); i++) {
Position position = decodePosition(result.getJsonObject(i));
if (position != null && position.getLatitude() != 0 && position.getLongitude() != 0) {
Context.getConnectionManager().updateDevice(position.getDeviceId(),
Device.STATUS_ONLINE, new Date());
Context.getDeviceManager().updateLatestPosition(position);
}
}
JsonArray errors = object.getJsonArray("errors");
if (errors != null) {
for (int i = 0; i < errors.size(); i++) {
JsonObject error = errors.getJsonObject(i);
Log.warning("Error in flespi channel: " + error.toString());
}
if (result == null || result.size() == 0) {
stopPullTask();
}
}
}
return null;
}
@Override
public void onThrowable(Throwable t) {
t.printStackTrace();
}
});
}
private Position decodePosition(JsonObject msg) {
Device device = null;
try {
device = Context.getIdentityManager().getByUniqueId(msg.getString("ident"));
} catch (Exception e) {
e.printStackTrace();
return null;
}
if (device == null) {
return null;
}
Position position = new Position();
position.setDeviceId(device.getId());
position.setProtocol("flespi");
position.setTime(new Date((long) msg.getJsonNumber("timestamp").doubleValue() * 1000));
JsonNumber lat = msg.getJsonNumber("position.latitude");
JsonNumber lon = msg.getJsonNumber("position.longitude");
position.setLatitude((lat != null && lon != null) ? lat.doubleValue() : 0);
position.setLongitude((lat != null && lon != null) ? lon.doubleValue() : 0);
JsonNumber speed = msg.getJsonNumber("position.speed");
position.setSpeed(speed != null ? speed.doubleValue() : 0);
JsonNumber course = msg.getJsonNumber("position.direction");
position.setCourse(course != null ? course.doubleValue() : 0);
JsonNumber altitude = msg.getJsonNumber("position.altitude");
position.setAltitude(altitude != null ? altitude.doubleValue() : 0);
int satellites = msg.getInt("position.satellites", 0);
position.setValid(lat != null && lon != null && satellites >= 3);
position.set(Position.KEY_SATELLITES, satellites);
return position;
}
}
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