refactor the amqp client logic to have a separated class

1 files changed, 57 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/forward/AmqpClient.java b/src/main/java/org/traccar/forward/AmqpClient.java
new file mode 100644
index 000000000..302aa664c
--- /dev/null
+++ b/src/main/java/org/traccar/forward/AmqpClient.java
@@ -0,0 +1,57 @@
+/*
+ * 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.forward;
+
+import com.rabbitmq.client.BuiltinExchangeType;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.MessageProperties;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.util.concurrent.TimeoutException;
+
+public class AmqpClient {
+    private final Channel channel;
+    private final String exchange;
+    private final String topic;
+
+    AmqpClient(String connectionUrl, String exchange, String topic) {
+        this.exchange = exchange;
+        this.topic = topic;
+
+        ConnectionFactory factory = new ConnectionFactory();
+        try {
+            factory.setUri(connectionUrl);
+        } catch (NoSuchAlgorithmException | URISyntaxException | KeyManagementException e) {
+            throw new RuntimeException("Error while setting URI for RabbitMQ connection factory", e);
+        }
+
+        try (Connection connection = factory.newConnection()) {
+            channel = connection.createChannel();
+            channel.exchangeDeclare(exchange, BuiltinExchangeType.TOPIC, true);
+        } catch (IOException | TimeoutException e) {
+            throw new RuntimeException("Error while creating and configuring RabbitMQ channel", e);
+        }
+    }
+
+    public void publishMessage(String message) throws IOException {
+        channel.basicPublish(exchange, topic, MessageProperties.PERSISTENT_TEXT_PLAIN, message.getBytes());
+    }
+}