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-rw-r--r--src/main/java/org/traccar/helper/MqttUtil.java83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/helper/MqttUtil.java b/src/main/java/org/traccar/helper/MqttUtil.java
new file mode 100644
index 000000000..54167f65c
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+++ b/src/main/java/org/traccar/helper/MqttUtil.java
@@ -0,0 +1,83 @@
+/*
+ * 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.helper;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.UUID;
+import java.util.function.BiConsumer;
+
+import com.hivemq.client.mqtt.datatypes.MqttQos;
+import com.hivemq.client.mqtt.mqtt3.Mqtt3AsyncClient;
+import com.hivemq.client.mqtt.mqtt3.Mqtt3Client;
+import com.hivemq.client.mqtt.mqtt3.Mqtt3ClientBuilder;
+import com.hivemq.client.mqtt.mqtt3.message.auth.Mqtt3SimpleAuth;
+import com.hivemq.client.mqtt.mqtt3.message.publish.Mqtt3Publish;
+
+public final class MqttUtil {
+
+ private MqttUtil() {
+
+ }
+
+ public static Mqtt3AsyncClient createClient(final String url) {
+ URI uri;
+ try {
+ uri = new URI(url);
+ } catch (URISyntaxException e) {
+ throw new RuntimeException(e);
+ }
+
+ final Mqtt3SimpleAuth simpleAuth = getSimpleAuth(uri);
+
+ final String host = uri.getHost();
+ final int port = uri.getPort();
+ final Mqtt3ClientBuilder builder = Mqtt3Client.builder().identifier("traccar-" + UUID.randomUUID())
+ .serverHost(host).serverPort(port).simpleAuth(simpleAuth).automaticReconnectWithDefaultConfig();
+ final Mqtt3AsyncClient client;
+
+ client = builder.buildAsync();
+
+
+ client.connectWith().send().whenComplete((message, e) -> {
+ throw new RuntimeException(e);
+ });
+
+ return client;
+ }
+
+ private static Mqtt3SimpleAuth getSimpleAuth(final URI uri) {
+ final String userInfo = uri.getUserInfo();
+ Mqtt3SimpleAuth simpleAuth = null;
+ if (userInfo != null) {
+ int delimiter = userInfo.indexOf(':');
+ if (delimiter == -1) {
+ throw new IllegalArgumentException("Wrong MQTT credentials. Should be in format \"username:password\"");
+ } else {
+ simpleAuth = Mqtt3SimpleAuth.builder().username(userInfo.substring(0, delimiter++))
+ .password(userInfo.substring(delimiter).getBytes()).build();
+ }
+ }
+ return simpleAuth;
+ }
+
+ public static void publish(final Mqtt3AsyncClient client, final String pubTopic, final String payload,
+ final BiConsumer<? super Mqtt3Publish, ? super Throwable> whenComplete) {
+ client.publishWith().topic(pubTopic).qos(MqttQos.AT_LEAST_ONCE).payload(payload.getBytes()).send()
+ .whenComplete(whenComplete);
+ }
+
+} \ No newline at end of file