MQTT event adapter

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/http/ExecutorRemovedEventListenerHttpAdapter.java

@@ -18,7 +18,8 @@ import org.springframework.web.bind.annotation.RestController;
 public class ExecutorRemovedEventListenerHttpAdapter {
 
     // TODO: add annotations for request method, request URI, etc.
-    public void handleExecutorRemovedEvent(@PathVariable("executorId") String executorId) {
+    @PostMapping(path = "/executors/{taskType}/{executorId}")
+    public ResponseEntity<String> handleExecutorRemovedEvent(@PathVariable("executorId") String executorId) {
         // TODO: implement logic
 
         ExecutorRemovedEvent executorRemovedEvent = new ExecutorRemovedEvent(
@@ -27,6 +28,7 @@ public class ExecutorRemovedEventListenerHttpAdapter {
 
         ExecutorRemovedHandler newExecutorHandler = new ExecutorRemovedHandler();
         newExecutorHandler.handleExecutorRemovedEvent(executorRemovedEvent);
-
+        
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
     }
 }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/mqtt/ExecutorRemovedEventListener

@@ -0,0 +1,46 @@
+package ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt;
+
+import ch.unisg.tapas.auctionhouse.application.handler.ExecutorRemovedHandler;
+import ch.unisg.tapas.auctionhouse.application.port.in.ExecutorRemovedEvent;
+import ch.unisg.tapas.auctionhouse.domain.Auction;
+import ch.unisg.tapas.auctionhouse.domain.ExecutorRegistry;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.eclipse.paho.client.mqttv3.MqttMessage;
+
+/**
+ * Listener that handles events when an executor was removed to this TAPAS application.
+ *
+ * This class is only provided as an example to help you bootstrap the project.
+ */
+public class ExecutorRemovedEventListenerMqttAdapter extends AuctionEventMqttListener {
+    private static final Logger LOGGER = LogManager.getLogger(ExecutorRemovedEventListenerMqttAdapter.class);
+
+    @Override
+    public boolean handleEvent(MqttMessage message) {
+        String payload = new String(message.getPayload());
+
+        try {
+            // Note: this messge representation is provided only as an example. You should use a
+            // representation that makes sense in the context of your application.
+            JsonNode data = new ObjectMapper().readTree(payload);
+
+            String executorId = data.get("executorId").asText();
+
+            ExecutorRemovedEvent executorRemovedEvent = new ExecutorRemovedEvent(
+                new ExecutorRegistry.ExecutorIdentifier(executorId)
+            );
+
+            ExecutorRemovedHandler newExecutorHandler = new ExecutorRemovedHandler();
+            newExecutorHandler.handleNewExecutorEvent(executorRemovedEvent);
+        } catch (JsonProcessingException | NullPointerException e) {
+            LOGGER.error(e.getMessage(), e);
+            return false;
+        }
+
+        return true;
+    }
+}