when gui preference option is created more than once for specified user...

when gui preference option is created more than once for specified user unhandled exception was thrown

CHANGELOG

@@ -3,6 +3,8 @@ minerva (15.0.3) stable; urgency=medium
     issues (#1315)
   * Bug fix: when there is a problem with minerva deployment on tomcat proper
     warning message is presented in admin panel (#1332)
+  * Bug fix: API call updating user preferences did not handle properly
+    conflicts on new gui properties (#1326)
 
  -- Piotr Gawron <piotr.gawron@uni.lu>  Wed, 8 Jul 2020 16:00:00 +0200
 

rest-api/src/main/java/lcsb/mapviewer/api/BaseController.java

@@ -39,6 +39,8 @@ public abstract class BaseController {
       return createErrorResponse("Object not found.", e.getMessage(), new HttpHeaders(), HttpStatus.NOT_FOUND);
     } else if (e instanceof ObjectExistsException) {
       return createErrorResponse("Object already exists.", e.getMessage(), new HttpHeaders(), HttpStatus.CONFLICT);
+    } else if (e instanceof UpdateConflictException) {
+      return createErrorResponse("There is a conflict with another query. Try again later.", e.getMessage(), new HttpHeaders(), HttpStatus.CONFLICT);
     } else if (e instanceof OperationNotAllowedException) {
       return createErrorResponse("Operation not allowed.", e.getMessage(), new HttpHeaders(),
           HttpStatus.METHOD_NOT_ALLOWED);

rest-api/src/main/java/lcsb/mapviewer/api/UpdateConflictException.java

+package lcsb.mapviewer.api;
+
+/**
+ * Thrown when object cannot be updated over API due to conflicting queries.
+ * 
+ * @author Piotr Gawron
+ *
+ */
+public class UpdateConflictException extends QueryException {
+
+  /**
+   * 
+   */
+  private static final long serialVersionUID = 1L;
+
+  /**
+   * Default constructor.
+   * 
+   * @param message
+   *          error message
+   */
+  public UpdateConflictException(String message) {
+    super(message);
+  }
+
+  /**
+   * Constructor with error message and parent exception.
+   * 
+   * @param message
+   *          error message
+   * @param reason
+   *          parent exception that caused this one
+   */
+  public UpdateConflictException(String message, Exception reason) {
+    super(message, reason);
+  }
+
+}

rest-api/src/main/java/lcsb/mapviewer/api/users/UserRestImpl.java

@@ -5,6 +5,7 @@ import java.util.*;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.hibernate.exception.ConstraintViolationException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.security.core.GrantedAuthority;
@@ -25,7 +26,7 @@ import lcsb.mapviewer.model.user.*;
 import lcsb.mapviewer.model.user.annotator.*;
 import lcsb.mapviewer.services.interfaces.ILayoutService;
 
-@Transactional
+@Transactional(rollbackFor = UpdateConflictException.class)
 @Service
 public class UserRestImpl extends BaseRestImpl {
 
@@ -606,6 +607,13 @@ public class UserRestImpl extends BaseRestImpl {
       return getUser(login, "preferences");
     } catch (IllegalArgumentException e) {
       throw new QueryException("Invalid input", e);
+    } catch (Exception e) {
+      if (e.getCause() instanceof ConstraintViolationException) {
+        if (e.getCause().getCause().getMessage().contains("duplicate key value violates unique constraint")) {
+          throw new UpdateConflictException("Conflict when updating preferences.", e);
+        }
+      }
+      throw e;
     }
   }
 

web/src/test/java/lcsb/mapviewer/web/ControllerIntegrationTest.java

@@ -93,7 +93,7 @@ abstract public class ControllerIntegrationTest {
   private LayoutDao layoutDao;
 
   @Autowired
-  private DbUtils dbUtils;
+  protected DbUtils dbUtils;
   private MinervaLoggerAppender appender;
 
   private ExecutorService executorService;

web/src/test/java/lcsb/mapviewer/web/UserControllerIntegrationTestWithoutTransaction.java

 package lcsb.mapviewer.web;
 
+import static org.junit.Assert.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
-import java.util.Arrays;
+import java.util.*;
 
+import org.apache.commons.lang3.mutable.MutableBoolean;
 import org.apache.http.client.entity.UrlEncodedFormEntity;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.util.EntityUtils;
@@ -20,6 +23,8 @@ import org.springframework.test.annotation.Rollback;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import org.springframework.test.web.servlet.RequestBuilder;
 
+import lcsb.mapviewer.model.user.User;
+import lcsb.mapviewer.model.user.UserGuiPreference;
 import lcsb.mapviewer.services.interfaces.IUserService;
 
 @RunWith(SpringJUnit4ClassRunner.class)
@@ -28,8 +33,6 @@ public class UserControllerIntegrationTestWithoutTransaction extends ControllerI
 
   private static final String TEST_USER_PASSWORD = "test_pass";
   private static final String TEST_USER_LOGIN = "test_user";
-  private static final String ADMIN_PASSWORD = "admin";
-  private static final String ADMIN_LOGIN = "admin";
   Logger logger = LogManager.getLogger();
   @Autowired
   private IUserService userService;
@@ -41,7 +44,7 @@ public class UserControllerIntegrationTestWithoutTransaction extends ControllerI
   @Test
   public void createUser() throws Exception {
     try {
-      MockHttpSession session = createSession(ADMIN_LOGIN, ADMIN_PASSWORD);
+      MockHttpSession session = createSession(BUILT_IN_TEST_ADMIN_LOGIN, BUILT_IN_TEST_ADMIN_PASSWORD);
 
       String body = EntityUtils.toString(new UrlEncodedFormEntity(Arrays.asList(
           new BasicNameValuePair("login", TEST_USER_LOGIN),
@@ -60,4 +63,66 @@ public class UserControllerIntegrationTestWithoutTransaction extends ControllerI
       removeUserInSeparateThread(userService.getUserByLogin(TEST_USER_LOGIN));
     }
   }
+
+  @Test
+  public void createGuiPreferencesTwice() throws Exception {
+    MockHttpSession session = createSession(BUILT_IN_TEST_ADMIN_LOGIN, BUILT_IN_TEST_ADMIN_PASSWORD);
+
+    try {
+      createUserInSeparateThread(TEST_USER_LOGIN, TEST_USER_PASSWORD);
+
+      callInSeparateThread(()->{
+        RequestBuilder request = patch("/users/" + TEST_USER_LOGIN + ":updatePreferences")
+            .contentType(MediaType.APPLICATION_JSON)
+            .content("{\"preferences\":{}}")
+            .session(session);
+
+        try {
+          mockMvc.perform(request)
+              .andExpect(status().is2xxSuccessful());
+        } catch (Exception e) {
+          e.printStackTrace();
+        }
+
+        return null;
+      });
+      
+      MutableBoolean exceptionHappened = new MutableBoolean(false);
+
+
+      List<Thread> threads = new ArrayList<>();
+      for (int i = 0; i < 10; i++) {
+        String body = "{\"preferences\":{\"gui-preferences\":{\"test\":\"val"+i+"\"}}}";
+        Thread thread = new Thread(new Runnable() {
+
+          @Override
+          public void run() {
+            dbUtils.createSessionForCurrentThread();
+            try {
+              RequestBuilder request = patch("/users/" + TEST_USER_LOGIN + ":updatePreferences")
+                  .contentType(MediaType.APPLICATION_JSON)
+                  .content(body)
+                  .session(session);
+
+              int status = mockMvc.perform(request).andReturn().getResponse().getStatus();
+              assertNotEquals(500, status);
+            } catch (Exception e) {
+              e.printStackTrace();
+              exceptionHappened.setTrue();
+            } finally {
+              dbUtils.closeSessionForCurrentThread();
+            }
+          }
+        });
+        threads.add(thread);
+        thread.start();
+      }
+      for (Thread thread : threads) {
+        thread.join();
+      }
+      assertFalse(exceptionHappened.getValue());
+    } finally {
+      removeUserInSeparateThread(userService.getUserByLogin(TEST_USER_LOGIN));
+    }
+  }
 }