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/*
* Copyright 2022 - 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.forward;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.hivemq.client.mqtt.datatypes.MqttQos;
import com.hivemq.client.mqtt.mqtt5.Mqtt5AsyncClient;
import com.hivemq.client.mqtt.mqtt5.Mqtt5Client;
import com.hivemq.client.mqtt.mqtt5.message.auth.Mqtt5SimpleAuth;
import org.traccar.config.Config;
import org.traccar.config.Keys;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.UUID;
public class EventForwarderMqtt implements EventForwarder {
private final Mqtt5AsyncClient client;
private final ObjectMapper objectMapper;
private final String topic;
public EventForwarderMqtt(Config config, ObjectMapper objectMapper) {
URI url;
try {
url = new URI(config.getString(Keys.EVENT_FORWARD_URL));
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
String userInfo = url.getUserInfo();
Mqtt5SimpleAuth simpleAuth = null;
if (userInfo != null) {
int delimiter = userInfo.indexOf(':');
if (delimiter == -1) {
throw new IllegalArgumentException("Wrong credentials. Should be in format \"username:password\"");
} else {
simpleAuth = Mqtt5SimpleAuth.builder()
.username(userInfo.substring(0, delimiter++))
.password(userInfo.substring(delimiter).getBytes())
.build();
}
}
String host = url.getHost();
int port = url.getPort();
client = Mqtt5Client.builder()
.identifier("traccar-" + UUID.randomUUID())
.serverHost(host)
.serverPort(port)
.simpleAuth(simpleAuth)
.automaticReconnectWithDefaultConfig()
.buildAsync();
client.connectWith()
.send()
.whenComplete((message, e) -> {
if (e != null) {
throw new RuntimeException(e);
}
});
this.objectMapper = objectMapper;
topic = config.getString(Keys.EVENT_FORWARD_TOPIC);
}
@Override
public void forward(EventData eventData, ResultHandler resultHandler) {
byte[] payload;
try {
payload = objectMapper.writeValueAsString(eventData).getBytes();
} catch (JsonProcessingException e) {
resultHandler.onResult(false, e);
return;
}
client.publishWith()
.topic(topic)
.qos(MqttQos.AT_LEAST_ONCE)
.payload(payload)
.send()
.whenComplete((message, e) -> resultHandler.onResult(e == null, e));
}
}
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