[#2876] Temporary workaround of #2876 (#2874)

Should be fixed with next Spring ORM - 7.0.4 / 6.2.16

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-repository/hawkbit-repository-jpa-eclipselink/src/main/java/org/eclipse/hawkbit/repository/jpa/HawkbitEclipseLinkJpaDialect.java

@@ -10,63 +10,85 @@
 package org.eclipse.hawkbit.repository.jpa;
 
 import java.io.Serial;
+import java.lang.reflect.Field;
+import java.sql.Connection;
 import java.sql.SQLException;
+import java.util.concurrent.locks.ReentrantLock;
 
+import jakarta.persistence.EntityManager;
 import jakarta.persistence.PersistenceException;
 
+import lombok.extern.slf4j.Slf4j;
 import org.eclipse.hawkbit.repository.jpa.utils.JpaExceptionTranslator;
 import org.springframework.dao.DataAccessException;
+import org.springframework.jdbc.datasource.ConnectionHandle;
 import org.springframework.jdbc.support.SQLStateSQLExceptionTranslator;
 import org.springframework.lang.NonNull;
 import org.springframework.orm.jpa.JpaSystemException;
 import org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect;
 
 /**
- * {@link EclipseLinkJpaDialect} with additional exception translation
- * mechanisms based on {@link SQLStateSQLExceptionTranslator}.
- *
- * There are multiple variations of exceptions coming out of persistence
- * provider:
- *
- * <p>
- * 1) {@link PersistenceException}s that can be mapped by
- * {@link EclipseLinkJpaDialect} into corresponding {@link DataAccessException}.
- * <p>
- * 2) {@link PersistenceException}s that could not be mapped by
- * {@link EclipseLinkJpaDialect} directly but instead are wrapped into
- * {@link JpaSystemException}.
- * <p>
- * 2.a) here the wrapped exception's causes might be an {@link SQLException}
- * which might be mappable by {@link SQLStateSQLExceptionTranslator} or
- * <p>
- * 2.b.) the wrapped exception's causes due not contain an {@link SQLException}
- * and as a result cannot be mapped.
- * <p>
- * 3) A {@link RuntimeException} that is no {@link PersistenceException}.
- * <p>
- * 3.a) here a cause might be an {@link SQLException} which might be mappable by
- * {@link SQLStateSQLExceptionTranslator} or
- * <p>
- * 3.b.) the cause is not an {@link SQLException} and as a result cannot be
- * mapped.
+ * {@link EclipseLinkJpaDialect} with additional exception translation mechanisms based on {@link SQLStateSQLExceptionTranslator}.
+ * There are multiple variations of exceptions coming out of persistence provider:
+ * <ol>
+ *     <li>{@link PersistenceException}s that can be mapped by {@link EclipseLinkJpaDialect} into corresponding {@link DataAccessException}</li>
+ *     <li>{@link PersistenceException}s that could not be mapped by {@link EclipseLinkJpaDialect} directly but instead are wrapped into {@link JpaSystemException}.
+ *         <ol>
+ *             <li>here the wrapped exception's causes might be an {@link SQLException} which might be mappable by {@link SQLStateSQLExceptionTranslator} or </li>
+ *             <li>the wrapped exception's causes due not contain an {@link SQLException} and as a result cannot be mapped. </li>
+ *         </ol>
+ *     </li>
+ *     <li>A {@link RuntimeException} that is no {@link PersistenceException}.
+ *         <ol>
+ *              <li>here a cause might be an {@link SQLException} which might be mappable by {@link SQLStateSQLExceptionTranslator} or </li>
+ *              <li>the cause is not an {@link SQLException} and as a result cannot be mapped.</li>
+ *         </ol>
+ *     </li>
+ * </ol>
  */
+@Slf4j
 class HawkbitEclipseLinkJpaDialect extends EclipseLinkJpaDialect {
 
     @Serial
     private static final long serialVersionUID = 1L;
 
+    // TODO: switch to Spring fix - temporarily workaround of https://github.com/eclipse-hawkbit/hawkbit/issues/2876
+    //  (https://github.com/spring-projects/spring-framework/issues/36165)
+    private final ReentrantLock supperTransactionIsolationLock;
+    @SuppressWarnings("java:S3011") // temporarily - to workaround bug in supper class
+    HawkbitEclipseLinkJpaDialect() {
+        try {
+            final Field field = EclipseLinkJpaDialect.class.getDeclaredField("transactionIsolationLock");
+            field.setAccessible(true);
+            supperTransactionIsolationLock = (ReentrantLock) field.get(this);
+        } catch (final NoSuchFieldException | IllegalAccessException e) {
+            log.error(e.getMessage(), e);
+            throw new IllegalStateException("Cannot access supper class field transactionIsolationLock", e);
+        }
+    }
+    // hawkbit uses JDBC and no need of lazy connection fetching
+    @Override
+    public ConnectionHandle getJdbcConnection(final EntityManager entityManager, final boolean readOnly) throws PersistenceException {
+        final Connection connection;
+        supperTransactionIsolationLock.lock();
+        try {
+            connection = entityManager.unwrap(Connection.class);
+        } finally {
+            supperTransactionIsolationLock.unlock();
+        }
+        return () -> connection;
+    }
+
     @Override
     public DataAccessException translateExceptionIfPossible(@NonNull final RuntimeException ex) {
         final DataAccessException dataAccessException = super.translateExceptionIfPossible(ex);
-
         if (dataAccessException == null) {
             return searchAndTranslateSqlException(ex);
         }
         return translateJpaSystemExceptionIfPossible(dataAccessException);
     }
 
-    private static DataAccessException translateJpaSystemExceptionIfPossible(
-            final DataAccessException accessException) {
+    private static DataAccessException translateJpaSystemExceptionIfPossible(final DataAccessException accessException) {
         if (!(accessException instanceof JpaSystemException)) {
             return accessException;
         }
@@ -83,7 +105,6 @@ class HawkbitEclipseLinkJpaDialect extends EclipseLinkJpaDialect {
         if (sqlException == null) {
             return null;
         }
-
         return JpaExceptionTranslator.getTranslator().translate("", null, sqlException);
     }
 
@@ -96,7 +117,6 @@ class HawkbitEclipseLinkJpaDialect extends EclipseLinkJpaDialect {
             }
             exception = cause;
         } while (exception != null);
-
         return null;
     }
 }

hawkbit-repository/hawkbit-repository-jpa-eclipselink/src/test/java/org/eclipse/hawkbit/repository/jpa/HawkbitEclipseLinkJpaDialectTest.java

@@ -28,7 +28,7 @@ import org.springframework.dao.UncategorizedDataAccessException;
  * Feature: Unit Tests - Repository<br/>
  * Story: Exception handling
  */
-class HawkBitEclipseLinkJpaDialectTest {
+class HawkbitEclipseLinkJpaDialectTest {
 
     private final HawkbitEclipseLinkJpaDialect hawkBitEclipseLinkJpaDialectUnderTest = new HawkbitEclipseLinkJpaDialect();