Add prefix to device credentials cache keys.

@@ -22,9 +22,11 @@ import org.thingsboard.server.dao.device.DeviceCredentialsService;
 
 import java.lang.reflect.Method;
 
+import static org.thingsboard.server.common.data.CacheConstants.DEVICE_CREDENTIALS_CACHE;
+
 public class PreviousDeviceCredentialsIdKeyGenerator implements KeyGenerator {
 
-    private static final String NOT_VALID_DEVICE = "notValidDeviceCredentialsId";
+    private static final String NOT_VALID_DEVICE = DEVICE_CREDENTIALS_CACHE + "_notValidDeviceCredentialsId";
 
     @Override
     public Object generate(Object o, Method method, Object... objects) {
@@ -34,7 +36,7 @@ public class PreviousDeviceCredentialsIdKeyGenerator implements KeyGenerator {
         if (deviceCredentials.getDeviceId() != null) {
             DeviceCredentials oldDeviceCredentials = deviceCredentialsService.findDeviceCredentialsByDeviceId(tenantId, deviceCredentials.getDeviceId());
             if (oldDeviceCredentials != null) {
-                return oldDeviceCredentials.getCredentialsId();
+                return DEVICE_CREDENTIALS_CACHE + "_" + oldDeviceCredentials.getCredentialsId();
             }
         }
         return NOT_VALID_DEVICE;

@@ -54,7 +54,7 @@ public class DeviceCredentialsServiceImpl implements DeviceCredentialsService {
     }
 
     @Override
-    @Cacheable(cacheNames = DEVICE_CREDENTIALS_CACHE, unless = "#result == null")
+    @Cacheable(cacheNames = DEVICE_CREDENTIALS_CACHE, key = "'deviceCredentials_' + #credentialsId", unless = "#result == null")
     public DeviceCredentials findDeviceCredentialsByCredentialsId(String credentialsId) {
         log.trace("Executing findDeviceCredentialsByCredentialsId [{}]", credentialsId);
         validateString(credentialsId, "Incorrect credentialsId " + credentialsId);
@@ -89,7 +89,7 @@ public class DeviceCredentialsServiceImpl implements DeviceCredentialsService {
     }
 
     @Override
-    @CacheEvict(cacheNames = DEVICE_CREDENTIALS_CACHE, key = "#deviceCredentials.credentialsId")
+    @CacheEvict(cacheNames = DEVICE_CREDENTIALS_CACHE, key = "'deviceCredentials_' + #deviceCredentials.credentialsId")
     public void deleteDeviceCredentials(TenantId tenantId, DeviceCredentials deviceCredentials) {
         log.trace("Executing deleteDeviceCredentials [{}]", deviceCredentials);
         deviceCredentialsDao.removeById(tenantId, deviceCredentials.getUuidId());

@@ -19,5 +19,5 @@ import org.thingsboard.server.dao.service.BaseDeviceCredentialsCacheTest;
 import org.thingsboard.server.dao.service.DaoNoSqlTest;
 
 @DaoNoSqlTest
-public class DeviceCredentialCacheNoSqlTest extends BaseDeviceCredentialsCacheTest {
+public class DeviceCredentialCacheServiceNoSqlTest extends BaseDeviceCredentialsCacheTest {
 }

@@ -19,5 +19,5 @@ import org.thingsboard.server.dao.service.BaseDeviceCredentialsCacheTest;
 import org.thingsboard.server.dao.service.DaoSqlTest;
 
 @DaoSqlTest
-public class DeviceCredentialsCacheSqlTest extends BaseDeviceCredentialsCacheTest {
+public class DeviceCredentialsCacheServiceSqlTest extends BaseDeviceCredentialsCacheTest {
 }