AMQP Forwarder

Add support to forward events and positions to AMQP (RabbitMQ).

1 files changed, 80 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/forward/PositionForwarderAmqp.java b/src/main/java/org/traccar/forward/PositionForwarderAmqp.java
new file mode 100644
index 000000000..c55ca3d73
--- /dev/null
+++ b/src/main/java/org/traccar/forward/PositionForwarderAmqp.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2022 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.rabbitmq.client.AMQP.BasicProperties;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import org.traccar.config.Config;
+import org.traccar.config.Keys;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.util.Properties;
+import java.util.concurrent.TimeoutException;
+
+public class PositionForwarderAmqp implements PositionForwarder {
+
+    private final Channel channel;
+    private final ObjectMapper objectMapper;
+
+    private final String exchange;
+    private final String topic;
+
+    public PositionForwarderAmqp(Config config, ObjectMapper objectMapper) {
+        ConnectionFactory factory = new ConnectionFactory();
+        try {
+            factory.setUri(config.getString(Keys.FORWARD_URL));
+        } catch (NoSuchAlgorithmException | URISyntaxException | KeyManagementException e) {
+            throw new RuntimeException(e);
+        }
+
+        try {
+            Connection connection  = factory.newConnection();
+            topic = config.getString(Keys.FORWARD_TOPIC);
+            exchange = config.getString(Keys.EVENT_FORWARD_EXCHANGE);
+            channel = connection.createChannel();
+            channel.exchangeDeclare(exchange, "topic", true);
+            this.objectMapper = objectMapper;
+        } catch (IOException | TimeoutException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void forward(PositionData positionData, ResultHandler resultHandler) {
+        try {
+            String value = objectMapper.writeValueAsString(positionData);
+
+            BasicProperties properties = new BasicProperties.Builder()
+                    .contentType("application/json")
+                    .contentEncoding("string")
+                    .deliveryMode(2)
+                    .priority(10)
+                    .build();
+
+            channel.basicPublish(exchange, topic, properties, value.getBytes());
+            resultHandler.onResult(true, null);
+        } catch (IOException e) {
+            resultHandler.onResult(false, e);
+        }
+    }
+}