PROBLEM-2076: Add debug log when preference value change

SalsaUtils/src/main/java/fr/soleil/salsa/preferences/DevicePreferences.java

@@ -56,6 +56,7 @@ public class DevicePreferences {
     public DevicePreferences(String preferenceFile, EventBus eventBus) {
         this.preferenceFile = preferenceFile;
         this.eventBus = eventBus;
+        eventBus.register(new DevicePreferencesChangeLogger());
     }
 
     /**

SalsaUtils/src/main/java/fr/soleil/salsa/preferences/DevicePreferencesChangeLogger.java

+package fr.soleil.salsa.preferences;
+
+import org.slf4j.Logger;
+
+import com.google.common.eventbus.Subscribe;
+
+import fr.soleil.salsa.logging.LoggingUtil;
+
+/**
+ * Add event listener logger for debugging on device preference change
+ * 
+ * @author Patrick Madela
+ */
+public class DevicePreferencesChangeLogger {
+    /** The logger for messages */
+    public static final Logger LOGGER = LoggingUtil.getLogger(DevicePreferencesChangeLogger.class);
+
+    /**
+     * Log device preferences change event
+     * 
+     * @param event the device preferences change event
+     */
+    @Subscribe
+    public void log(DevicePreferencesEvent event) {
+        DevicePreferences devicePreferences = event.getSource();
+        switch (event.getType()) {
+            case SCANSERVER_CHANGED:
+                log("ScanServer", devicePreferences.getScanServer());
+                break;
+            case DATAFITTER_CHANGED:
+                log("DataFitter", devicePreferences.getDataFitter());
+                break;
+            case PUBLISHER_CHANGED:
+                log("Publisher", devicePreferences.getPublisher());
+                break;
+            case RECORDINGMANAGER_CHANGED:
+                log("RecordingManager", devicePreferences.getRecordingManager());
+                break;
+            case RECORDINGMANAGER_PROFIL_CHANGED:
+                log("RecordingManagerProfil", devicePreferences.getRecordingManagerProfil());
+                break;
+            case USERLOGFILE_CHANGED:
+                log("UserLogFile", devicePreferences.getUserLogFile());
+                break;
+            case MAXLINENUMBER_CHANGED:
+                log("MaxLineNumber", devicePreferences.getMaxLineNumber());
+                break;
+            default:
+                break;
+        }
+    }
+
+    private void log(String name, Object value) {
+        LOGGER.debug("Device preferences value of \"{}\" changed to \"{}\"", name, value);
+    }
+}