fix ConstraintViolationException on findOrCreateDeviceProfile

@@ -64,8 +64,10 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
-import java.util.stream.Collectors;
 import java.util.Set;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.stream.Collectors;
 
 import static org.thingsboard.server.common.data.CacheConstants.DEVICE_PROFILE_CACHE;
 import static org.thingsboard.server.dao.service.Validator.validateId;
@@ -101,6 +103,8 @@ public class DeviceProfileServiceImpl extends AbstractEntityService implements D
     @Autowired
     private CacheManager cacheManager;
 
+    private final Lock findOrCreateLock = new ReentrantLock();
+
     @Cacheable(cacheNames = DEVICE_PROFILE_CACHE, key = "{#deviceProfileId.id}")
     @Override
     public DeviceProfile findDeviceProfileById(TenantId tenantId, DeviceProfileId deviceProfileId) {
@@ -220,7 +224,15 @@ public class DeviceProfileServiceImpl extends AbstractEntityService implements D
         log.trace("Executing findOrCreateDefaultDeviceProfile");
         DeviceProfile deviceProfile = findDeviceProfileByName(tenantId, name);
         if (deviceProfile == null) {
-            deviceProfile = this.doCreateDefaultDeviceProfile(tenantId, name, name.equals("default"));
+            try {
+                findOrCreateLock.lock();
+                deviceProfile = findDeviceProfileByName(tenantId, name);
+                if (deviceProfile == null) {
+                    deviceProfile = this.doCreateDefaultDeviceProfile(tenantId, name, name.equals("default"));
+                }
+            } finally {
+                findOrCreateLock.unlock();
+            }
         }
         return deviceProfile;
     }

@@ -15,6 +15,10 @@
  */
 package org.thingsboard.server.dao.service;
 
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.ListeningExecutorService;
+import com.google.common.util.concurrent.MoreExecutors;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -34,6 +38,9 @@ import org.thingsboard.server.dao.exception.DataValidationException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 import java.util.stream.Collectors;
 
 public class BaseDeviceProfileServiceTest extends AbstractServiceTest {
@@ -113,6 +120,23 @@ public class BaseDeviceProfileServiceTest extends AbstractServiceTest {
     }
 
     @Test
+    public void testFindOrCreateDeviceProfile() throws ExecutionException, InterruptedException {
+        ListeningExecutorService testExecutor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(100));
+        try {
+            List<ListenableFuture<DeviceProfile>> futures = new ArrayList<>();
+            for (int i = 0; i < 50; i ++) {
+                futures.add(testExecutor.submit(() -> deviceProfileService.findOrCreateDeviceProfile(tenantId, "Device Profile 1")));
+                futures.add(testExecutor.submit(() -> deviceProfileService.findOrCreateDeviceProfile(tenantId, "Device Profile 2")));
+            }
+
+            List<DeviceProfile> deviceProfiles = Futures.allAsList(futures).get();
+            deviceProfiles.forEach(Assert::assertNotNull);
+        } finally {
+            testExecutor.shutdownNow();
+        }
+    }
+
+    @Test
     public void testSetDefaultDeviceProfile() {
         DeviceProfile deviceProfile1 = this.createDeviceProfile(tenantId,"Device Profile 1");
         DeviceProfile deviceProfile2 = this.createDeviceProfile(tenantId,"Device Profile 2");