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/*
* Copyright 2015 - 2019 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;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.inject.assistedinject.Assisted;
import org.traccar.database.IdentityManager;
import org.traccar.helper.Checksum;
import org.traccar.model.Device;
import org.traccar.model.Position;
import org.traccar.model.Group;
import javax.inject.Inject;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.Invocation;
import java.util.HashMap;
import java.util.Map;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Calendar;
import java.util.Formatter;
import java.util.Locale;
import java.util.TimeZone;
public class WebDataHandler extends BaseDataHandler {
private static final String KEY_POSITION = "position";
private static final String KEY_DEVICE = "device";
private final IdentityManager identityManager;
private final ObjectMapper objectMapper;
private final Client client;
private final String url;
private final String header;
private final boolean json;
public interface Factory {
WebDataHandler create(
@Assisted("url") String url, @Assisted("header") String header, boolean json);
}
@Inject
public WebDataHandler(
IdentityManager identityManager, ObjectMapper objectMapper, Client client,
@Assisted("url") String url, @Assisted("header") String header, @Assisted boolean json) {
this.identityManager = identityManager;
this.objectMapper = objectMapper;
this.client = client;
this.url = url;
this.header = header;
this.json = json;
}
private static String formatSentence(Position position) {
StringBuilder s = new StringBuilder("$GPRMC,");
try (Formatter f = new Formatter(s, Locale.ENGLISH)) {
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"), Locale.ENGLISH);
calendar.setTimeInMillis(position.getFixTime().getTime());
f.format("%1$tH%1$tM%1$tS.%1$tL,A,", calendar);
double lat = position.getLatitude();
double lon = position.getLongitude();
f.format("%02d%07.4f,%c,", (int) Math.abs(lat), Math.abs(lat) % 1 * 60, lat < 0 ? 'S' : 'N');
f.format("%03d%07.4f,%c,", (int) Math.abs(lon), Math.abs(lon) % 1 * 60, lon < 0 ? 'W' : 'E');
f.format("%.2f,%.2f,", position.getSpeed(), position.getCourse());
f.format("%1$td%1$tm%1$ty,,", calendar);
}
s.append(Checksum.nmea(s.toString()));
return s.toString();
}
private String calculateStatus(Position position) {
if (position.getAttributes().containsKey(Position.KEY_ALARM)) {
return "0xF841"; // STATUS_PANIC_ON
} else if (position.getSpeed() < 1.0) {
return "0xF020"; // STATUS_LOCATION
} else {
return "0xF11C"; // STATUS_MOTION_MOVING
}
}
public String formatRequest(Position position) throws UnsupportedEncodingException, JsonProcessingException {
Device device = identityManager.getById(position.getDeviceId());
String request = url
.replace("{name}", URLEncoder.encode(device.getName(), StandardCharsets.UTF_8.name()))
.replace("{uniqueId}", device.getUniqueId())
.replace("{status}", device.getStatus())
.replace("{deviceId}", String.valueOf(position.getDeviceId()))
.replace("{protocol}", String.valueOf(position.getProtocol()))
.replace("{deviceTime}", String.valueOf(position.getDeviceTime().getTime()))
.replace("{fixTime}", String.valueOf(position.getFixTime().getTime()))
.replace("{valid}", String.valueOf(position.getValid()))
.replace("{latitude}", String.valueOf(position.getLatitude()))
.replace("{longitude}", String.valueOf(position.getLongitude()))
.replace("{altitude}", String.valueOf(position.getAltitude()))
.replace("{speed}", String.valueOf(position.getSpeed()))
.replace("{course}", String.valueOf(position.getCourse()))
.replace("{accuracy}", String.valueOf(position.getAccuracy()))
.replace("{statusCode}", calculateStatus(position));
if (position.getAddress() != null) {
request = request.replace(
"{address}", URLEncoder.encode(position.getAddress(), StandardCharsets.UTF_8.name()));
}
if (request.contains("{attributes}")) {
String attributes = objectMapper.writeValueAsString(position.getAttributes());
request = request.replace(
"{attributes}", URLEncoder.encode(attributes, StandardCharsets.UTF_8.name()));
}
if (request.contains("{gprmc}")) {
request = request.replace("{gprmc}", formatSentence(position));
}
if (request.contains("{group}")) {
String deviceGroupName = "";
if (device.getGroupId() != 0) {
Group group = Context.getGroupsManager().getById(device.getGroupId());
if (group != null) {
deviceGroupName = group.getName();
}
}
request = request.replace("{group}", URLEncoder.encode(deviceGroupName, StandardCharsets.UTF_8.name()));
}
return request;
}
@Override
protected Position handlePosition(Position position) {
String url;
if (json) {
url = this.url;
} else {
try {
url = formatRequest(position);
} catch (UnsupportedEncodingException | JsonProcessingException e) {
throw new RuntimeException("Forwarding formatting error", e);
}
}
Invocation.Builder requestBuilder = client.target(url).request();
if (header != null && !header.isEmpty()) {
for (String line: header.split("\\r?\\n")) {
String[] values = line.split(":", 2);
requestBuilder.header(values[0].trim(), values[1].trim());
}
}
if (json) {
requestBuilder.async().post(Entity.json(prepareJsonPayload(position)));
} else {
requestBuilder.async().get();
}
return position;
}
protected Map<String, Object> prepareJsonPayload(Position position) {
Map<String, Object> data = new HashMap<>();
Device device = identityManager.getById(position.getDeviceId());
data.put(KEY_POSITION, position);
if (device != null) {
data.put(KEY_DEVICE, device);
}
return data;
}
}
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