fixed transaction issue

dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java

@@ -189,13 +189,17 @@ public class DeviceServiceImpl extends CachedVersionedEntityService<DeviceCacheK
     @Transactional
     @Override
     public Device saveDeviceWithCredentials(Device device, DeviceCredentials deviceCredentials) {
-        return this.saveDeviceWithCredentials(device, deviceCredentials, NameConflictStrategy.DEFAULT);
+        return saveDeviceWithCredentials(device, deviceCredentials, NameConflictStrategy.DEFAULT);
     }
 
     @Transactional
     @Override
     public Device saveDeviceWithCredentials(Device device, DeviceCredentials deviceCredentials, NameConflictStrategy nameConflictStrategy) {
-        Device savedDevice = this.saveDeviceWithoutCredentials(device, true, nameConflictStrategy);
+        return saveEntity(device, () -> doSaveWithCredentials(device, deviceCredentials, nameConflictStrategy));
+    }
+
+    private Device doSaveWithCredentials(Device device, DeviceCredentials deviceCredentials, NameConflictStrategy nameConflictStrategy) {
+        Device savedDevice = doSaveDeviceWithoutCredentials(device, true, nameConflictStrategy);
         deviceCredentials.setDeviceId(savedDevice.getId());
         if (device.getId() == null) {
             deviceCredentialsService.createDeviceCredentials(savedDevice.getTenantId(), deviceCredentials);
@@ -216,7 +220,11 @@ public class DeviceServiceImpl extends CachedVersionedEntityService<DeviceCacheK
     }
 
     private Device doSaveDevice(Device device, String accessToken, boolean doValidate, NameConflictStrategy nameConflictStrategy) {
-        Device savedDevice = this.saveDeviceWithoutCredentials(device, doValidate, nameConflictStrategy);
+        return saveEntity(device, () -> saveWithoutCredentials(device, accessToken, doValidate, nameConflictStrategy));
+    }
+
+    private Device saveWithoutCredentials(Device device, String accessToken, boolean doValidate, NameConflictStrategy nameConflictStrategy) {
+        Device savedDevice = doSaveDeviceWithoutCredentials(device, doValidate, nameConflictStrategy);
         if (device.getId() == null) {
             DeviceCredentials deviceCredentials = new DeviceCredentials();
             deviceCredentials.setDeviceId(new DeviceId(savedDevice.getUuidId()));
@@ -227,10 +235,6 @@ public class DeviceServiceImpl extends CachedVersionedEntityService<DeviceCacheK
         return savedDevice;
     }
 
-    private Device saveDeviceWithoutCredentials(Device device, boolean doValidate, NameConflictStrategy nameConflictStrategy) {
-        return saveEntity(device, () -> doSaveDeviceWithoutCredentials(device, doValidate, nameConflictStrategy));
-    }
-
     private Device doSaveDeviceWithoutCredentials(Device device, boolean doValidate, NameConflictStrategy nameConflictStrategy) {
         log.trace("Executing saveDevice [{}]", device);
         Device oldDevice = (device.getId() != null) ? deviceDao.findById(device.getTenantId(), device.getId().getId()) : null;

dao/src/test/java/org/thingsboard/server/dao/service/DeviceServiceTest.java

@@ -162,13 +162,13 @@ public class DeviceServiceTest extends AbstractServiceTest {
         defaultTenantProfile.getProfileData().setConfiguration(DefaultTenantProfileConfiguration.builder().maxDevices(5l).build());
         tenantProfileService.saveTenantProfile(tenantId, defaultTenantProfile);
 
-        for (int i = 0; i < 20; i++) {
+        for (int i = 0; i < 50; i++) {
             executor.submit(() -> {
                 Device device = new Device();
                 device.setTenantId(tenantId);
                 device.setName(StringUtils.randomAlphabetic(10));
                 device.setType("default");
-                deviceService.saveDevice(device, true);
+                deviceService.saveDevice(device);
             });
         }