Erweiterungen

src/main/java/de/assecutor/votianlt/config/JacksonConfig.java

@@ -0,0 +1,31 @@
+package de.assecutor.votianlt.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+/**
+ * Jackson configuration for consistent JSON serialization across the application.
+ * Ensures all date/time fields are serialized as ISO 8601 strings.
+ */
+@Configuration
+public class JacksonConfig {
+
+    /**
+     * Creates a configured ObjectMapper bean that serializes dates as ISO 8601 strings.
+     * This bean is used throughout the application for JSON serialization.
+     */
+    @Bean
+    @Primary
+    public ObjectMapper objectMapper() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+        // Serialize dates as ISO 8601 strings instead of timestamps/arrays
+        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        return objectMapper;
+    }
+}
+

src/main/java/de/assecutor/votianlt/controller/MessageController.java

@@ -28,7 +28,6 @@ import de.assecutor.votianlt.service.MessageService;
 import de.assecutor.votianlt.model.JobStatus;
 import lombok.extern.slf4j.Slf4j;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import de.assecutor.votianlt.mqtt.MqttPublisher;
 import org.springframework.stereotype.Component;
 
@@ -72,12 +71,13 @@ public class MessageController {
     private final EmailService emailService;
     private final MessageService messageService;
     private final UserService userService;
+    private final ObjectMapper objectMapper;
 
     public MessageController(MqttPublisher mqttPublisher, AppUserRepository appUserRepository,
             AppUserService appUserService, JobRepository jobRepository, CargoItemRepository cargoItemRepository,
             TaskRepository taskRepository, PhotoRepository photoRepository, BarcodeRepository barcodeRepository,
             SignatureRepository signatureRepository, CommentRepository commentRepository, JobHistoryService jobHistoryService,
-            EmailService emailService, MessageService messageService, UserService userService) {
+            EmailService emailService, MessageService messageService, UserService userService, ObjectMapper objectMapper) {
         this.mqttPublisher = mqttPublisher;
         this.appUserRepository = appUserRepository;
         this.appUserService = appUserService;
@@ -92,6 +92,7 @@ public class MessageController {
         this.emailService = emailService;
         this.messageService = messageService;
         this.userService = userService;
+        this.objectMapper = objectMapper;
     }
 
     /**
@@ -199,8 +200,6 @@ public class MessageController {
         // Log complete JSON for debugging
         log.debug("About to serialize {} jobs to JSON for logging", jobsWithRelatedData.size());
         try {
-            ObjectMapper objectMapper = new ObjectMapper();
-            objectMapper.registerModule(new JavaTimeModule());
             String jsonOutput = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(jobsWithRelatedData);
             log.info("=== COMPLETE JSON RESPONSE FOR MQTT CLIENT ===");
             log.info("AppUserId: {}", appUserId);

src/main/java/de/assecutor/votianlt/messaging/config/PluginMessagingConfig.java

@@ -12,7 +12,6 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.event.EventListener;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 
 import java.nio.charset.StandardCharsets;
 
@@ -45,10 +44,9 @@ public class PluginMessagingConfig {
     private final PluginManager pluginManager;
     private final ObjectMapper objectMapper;
 
-    public PluginMessagingConfig(PluginManager pluginManager) {
+    public PluginMessagingConfig(PluginManager pluginManager, ObjectMapper objectMapper) {
         this.pluginManager = pluginManager;
-        this.objectMapper = new ObjectMapper();
+        this.objectMapper = objectMapper;
-        this.objectMapper.registerModule(new JavaTimeModule());
     }
 
     /**
@@ -143,7 +141,11 @@ public class PluginMessagingConfig {
             pluginManager.registerAckHandler((messageId, payload) -> {
                 try {
                     String json = new String(payload, StandardCharsets.UTF_8);
-                    AcknowledgmentMessage ack = objectMapper.readValue(json, AcknowledgmentMessage.class);
+                    log.info("[PluginMessagingConfig] Received ACK JSON: {}", json);
+
+                    // ACK messages are wrapped in MessageEnvelope
+                    MessageEnvelope envelope = objectMapper.readValue(json, MessageEnvelope.class);
+                    AcknowledgmentMessage ack = objectMapper.convertValue(envelope.getPayload(), AcknowledgmentMessage.class);
                     deliveryService.handleAcknowledgment(ack);
                 } catch (Exception e) {
                     log.error("[PluginMessagingConfig] Error handling ACK message: {}", e.getMessage(), e);
@@ -177,6 +179,7 @@ public class PluginMessagingConfig {
     private void handleEnvelopedMessage(String clientId, byte[] payload, MessageDeliveryService deliveryService) {
         try {
             String json = new String(payload, StandardCharsets.UTF_8);
+            log.info("[PluginMessagingConfig] Received JSON from client {}: {}", clientId, json);
 
             // Try to parse as envelope first
             try {
@@ -184,7 +187,7 @@ public class PluginMessagingConfig {
                 deliveryService.handleIncomingMessage(envelope);
             } catch (Exception e) {
                 // If not an envelope, it might be a legacy message - log and skip
-                log.debug("[PluginMessagingConfig] Received non-enveloped message from client {}, skipping", clientId);
+                log.warn("[PluginMessagingConfig] Received non-enveloped message from client {}, skipping. JSON: {}", clientId, json);
             }
         } catch (Exception e) {
             log.error("[PluginMessagingConfig] Error handling enveloped message from client {}: {}", clientId, e.getMessage(), e);

src/main/java/de/assecutor/votianlt/messaging/delivery/AcknowledgmentHandler.java

@@ -2,7 +2,6 @@ package de.assecutor.votianlt.messaging.delivery;
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import de.assecutor.votianlt.controller.MessageController;
 import de.assecutor.votianlt.dto.AppLoginRequest;
 import de.assecutor.votianlt.messaging.model.MessageEnvelope;
@@ -23,10 +22,9 @@ public class AcknowledgmentHandler {
     private final MessageController messageController;
     private final ObjectMapper objectMapper;
 
-    public AcknowledgmentHandler(@Lazy MessageController messageController) {
+    public AcknowledgmentHandler(@Lazy MessageController messageController, ObjectMapper objectMapper) {
         this.messageController = messageController;
-        this.objectMapper = new ObjectMapper();
+        this.objectMapper = objectMapper;
-        this.objectMapper.registerModule(new JavaTimeModule());
     }
 
     /**

src/main/java/de/assecutor/votianlt/messaging/delivery/MessageDeliveryServiceImpl.java

@@ -1,7 +1,6 @@
 package de.assecutor.votianlt.messaging.delivery;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import de.assecutor.votianlt.messaging.model.*;
 import de.assecutor.votianlt.messaging.plugin.PluginManager;
 import de.assecutor.votianlt.messaging.plugin.SendOptions;
@@ -36,14 +35,14 @@ public class MessageDeliveryServiceImpl implements MessageDeliveryService {
             PendingDeliveryRepository pendingDeliveryRepository,
             MessageEnvelopeRepository envelopeRepository,
             AcknowledgmentHandler acknowledgmentHandler,
-            DeliveryConfig config) {
+            DeliveryConfig config,
+            ObjectMapper objectMapper) {
         this.pluginManager = pluginManager;
         this.pendingDeliveryRepository = pendingDeliveryRepository;
         this.envelopeRepository = envelopeRepository;
         this.acknowledgmentHandler = acknowledgmentHandler;
         this.config = config;
-        this.objectMapper = new ObjectMapper();
+        this.objectMapper = objectMapper;
-        this.objectMapper.registerModule(new JavaTimeModule());
     }
 
     @Override
@@ -64,6 +63,7 @@ public class MessageDeliveryServiceImpl implements MessageDeliveryService {
             // Serialize envelope to JSON
             String json = objectMapper.writeValueAsString(envelope);
             byte[] envelopeData = json.getBytes(StandardCharsets.UTF_8);
+            log.info("[MessageDelivery] Sending JSON to client {} (type: {}): {}", clientId, messageType, json);
 
             // Create pending delivery record if acknowledgment is required
             if (options.isRequiresAck()) {

src/main/java/de/assecutor/votianlt/messaging/plugin/mqtt/MqttMessagingPlugin.java

@@ -21,8 +21,8 @@ import java.util.concurrent.ConcurrentHashMap;
  * Topic Structure (managed internally):
  * - Server -> Client: /client/{clientId}/{messageType}
  * - Client -> Server: /server/{clientId}/{messageType}
- * - ACK Server -> Client: /client/{clientId}/{messageId}/ack
+ * - ACK Server -> Client: /client/{clientId}/ack (messageId in payload)
- * - ACK Client -> Server: /server/{messageId}/ack
+ * - ACK Client -> Server: /server/{clientId}/ack (messageId in payload)
  */
 @Slf4j
 public class MqttMessagingPlugin implements MessagingPlugin {
@@ -33,8 +33,8 @@ public class MqttMessagingPlugin implements MessagingPlugin {
     // Topic templates
     private static final String TOPIC_TO_CLIENT = "/client/%s/%s";           // /client/{clientId}/{messageType}
     private static final String TOPIC_FROM_CLIENT = "/server/%s/%s";        // /server/{clientId}/{messageType}
-    private static final String TOPIC_ACK_TO_CLIENT = "/client/%s/%s/ack";  // /client/{clientId}/{messageId}/ack
+    private static final String TOPIC_ACK_TO_CLIENT = "/client/%s/ack";      // /client/{clientId}/ack (messageId in payload)
-    private static final String TOPIC_ACK_FROM_CLIENT = "/server/%s/ack";   // /server/{messageId}/ack
+    private static final String TOPIC_ACK_FROM_CLIENT = "/server/%s/ack";   // /server/{clientId}/ack (messageId in payload)
 
     // Subscription patterns
     private static final String PATTERN_FROM_CLIENT = "/server/+/%s";       // /server/+/{messageType}
@@ -205,7 +205,7 @@ public class MqttMessagingPlugin implements MessagingPlugin {
             return CompletableFuture.failedFuture(new PluginException("MQTT client is not connected"));
         }
 
-        String topic = String.format(TOPIC_ACK_TO_CLIENT, clientId, messageId);
+        String topic = String.format(TOPIC_ACK_TO_CLIENT, clientId);
         log.debug("[MqttPlugin] Sending ACK to client {} for message {} on topic: {}", clientId, messageId, topic);
 
         return sendToTopic(topic, payload, options);
@@ -351,7 +351,7 @@ public class MqttMessagingPlugin implements MessagingPlugin {
 
     /**
      * Handle ACK message from client.
-     * Topic format: /server/{messageId}/ack
+     * Topic format: /server/{clientId}/ack (messageId in payload)
      */
     private void handleAckMessage(String topic, byte[] payload) {
         if (ackHandler == null) {
@@ -359,20 +359,71 @@ public class MqttMessagingPlugin implements MessagingPlugin {
             return;
         }
 
-        // Extract messageId from topic: /server/{messageId}/ack
+        // Extract clientId from topic: /server/{clientId}/ack
         String[] parts = topic.split("/");
         if (parts.length >= 4) {
-            String messageId = parts[2];  // messageId is at index 2
+            String clientId = parts[2];  // clientId is at index 2
-            log.debug("[MqttPlugin] Routing ACK for message: {}", messageId);
+
+            // Extract messageId from payload
+            String payloadStr = new String(payload, StandardCharsets.UTF_8);
+            String messageId = extractMessageIdFromPayload(payloadStr);
+
+            if (messageId != null) {
+                log.debug("[MqttPlugin] Routing ACK for message: {} from client: {}", messageId, clientId);
                 ackHandler.onAckReceived(messageId, payload);
+            } else {
+                log.warn("[MqttPlugin] Could not extract messageId from ACK payload: {}", payloadStr);
+            }
         } else {
             log.warn("[MqttPlugin] Invalid ACK topic format: {}", topic);
         }
     }
 
+    /**
+     * Extract messageId from ACK payload.
+     * Expected payload format: JSON with "messageId" field, e.g., {"messageId": "abc-123"}
+     * or plain messageId string.
+     */
+    private String extractMessageIdFromPayload(String payload) {
+        if (payload == null || payload.isBlank()) {
+            return null;
+        }
+
+        payload = payload.trim();
+
+        // Try to extract from JSON format: {"messageId": "..."}
+        if (payload.startsWith("{")) {
+            // Simple JSON parsing for messageId field
+            int keyIndex = payload.indexOf("\"messageId\"");
+            if (keyIndex == -1) {
+                keyIndex = payload.indexOf("'messageId'");
+            }
+            if (keyIndex >= 0) {
+                int colonIndex = payload.indexOf(":", keyIndex);
+                if (colonIndex >= 0) {
+                    int valueStart = payload.indexOf("\"", colonIndex);
+                    if (valueStart == -1) {
+                        valueStart = payload.indexOf("'", colonIndex);
+                    }
+                    if (valueStart >= 0) {
+                        char quote = payload.charAt(valueStart);
+                        int valueEnd = payload.indexOf(quote, valueStart + 1);
+                        if (valueEnd > valueStart) {
+                            return payload.substring(valueStart + 1, valueEnd);
+                        }
+                    }
+                }
+            }
+        }
+
+        // If not JSON, treat the entire payload as the messageId
+        return payload;
+    }
+
     /**
      * Handle client message.
      * Topic format: /server/{clientId}/{messageType} or /server/{messageType} (for login)
+     * messageType can contain slashes, e.g., "jobs/assigned"
      */
     private void handleClientMessage(String topic, byte[] payload) {
         // Extract clientId and messageType from topic
@@ -391,10 +442,12 @@ public class MqttMessagingPlugin implements MessagingPlugin {
             return;
         }
 
-        // Handle /server/{clientId}/{messageType}
+        // Handle /server/{clientId}/{messageType} where messageType can contain slashes
         if (parts.length >= 4) {
             String clientId = parts[2];
-            String messageType = parts[3];
+            // Join all parts from index 3 onwards to form the full messageType
+            // e.g., /server/clientId/jobs/assigned -> messageType = "jobs/assigned"
+            String messageType = String.join("/", java.util.Arrays.copyOfRange(parts, 3, parts.length));
 
             ClientMessageHandler handler = messageHandlers.get(messageType);
             if (handler != null) {

src/main/java/de/assecutor/votianlt/mqtt/MqttPublisher.java

@@ -1,7 +1,6 @@
 package de.assecutor.votianlt.mqtt;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import de.assecutor.votianlt.messaging.delivery.MessageDeliveryService;
 import de.assecutor.votianlt.messaging.model.DeliveryOptions;
 import lombok.extern.slf4j.Slf4j;
@@ -31,10 +30,9 @@ class MqttPublisherImpl implements MqttPublisher {
     private final ObjectMapper objectMapper;
     private final MessageDeliveryService deliveryService;
 
-    public MqttPublisherImpl(@Lazy MessageDeliveryService deliveryService) {
+    public MqttPublisherImpl(@Lazy MessageDeliveryService deliveryService, ObjectMapper objectMapper) {
         this.deliveryService = deliveryService;
-        this.objectMapper = new ObjectMapper();
+        this.objectMapper = objectMapper;
-        this.objectMapper.registerModule(new JavaTimeModule());
     }
 
     @Override

src/main/java/de/assecutor/votianlt/service/JobHistoryService.java

@@ -19,9 +19,9 @@ public class JobHistoryService {
     private final JobHistoryRepository jobHistoryRepository;
     private final ObjectMapper objectMapper;
 
-    public JobHistoryService(JobHistoryRepository jobHistoryRepository) {
+    public JobHistoryService(JobHistoryRepository jobHistoryRepository, ObjectMapper objectMapper) {
         this.jobHistoryRepository = jobHistoryRepository;
-        this.objectMapper = new ObjectMapper();
+        this.objectMapper = objectMapper;
     }
 
     /**