| /* |
| * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.tests.junit.failover; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.persistence.exceptions.DatabaseException; |
| import org.eclipse.persistence.internal.databaseaccess.Accessor; |
| import org.eclipse.persistence.queries.ReadObjectQuery; |
| import org.eclipse.persistence.sessions.Project; |
| import org.eclipse.persistence.sessions.server.ServerSession; |
| import org.eclipse.persistence.testing.tests.junit.failover.emulateddriver.EmulatedConnection; |
| import org.eclipse.persistence.testing.tests.junit.failover.emulateddriver.EmulatedDriver; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * This test will test TopLink Failover support within a TopLink Connection |
| * pool. It is expected that upon a connection failure TopLink will remove all |
| * broken connections From the TopLink Pool and then reattempt connection to the |
| * datasource. |
| * |
| * @author gyorke |
| * |
| */ |
| public class ConnectionPoolFailoverTest extends FailoverBase<ServerSession> { |
| |
| @Override |
| protected ServerSession createSession(Project p) { |
| return (ServerSession) p.createServerSession(); |
| } |
| |
| @Test |
| public void fullDatabaseFailureTest() { |
| try { |
| List<Accessor> list = getEmulatedSession().getReadConnectionPool().getConnectionsAvailable(); |
| for (Accessor accessor : list) { |
| ((EmulatedConnection) accessor.getConnection()).causeCommError(); |
| } |
| EmulatedDriver.fullFailure = true; |
| getEmulatedSession().acquireClientSession().readObject(Address.class); |
| } catch (DatabaseException ex) { |
| return; // Exception expected |
| } finally { |
| EmulatedDriver.fullFailure = false; |
| } |
| Assert.fail("Should have thrown exception as database connection is unavailable."); |
| } |
| |
| @Test |
| public void connectionPoolFailureTest() { |
| List<Accessor> connections = new ArrayList<>(); |
| // prime connection pools. |
| for (int i = 0; i < 10; ++i) { |
| connections.add(getEmulatedSession().getConnectionPool("default").acquireConnection()); |
| } |
| for (Accessor accessor : connections) { |
| getEmulatedSession().getConnectionPool("default").releaseConnection(accessor); |
| } |
| List<Accessor> list = getEmulatedSession().getReadConnectionPool().getConnectionsAvailable(); |
| for (Accessor accessor : list) { |
| ((EmulatedConnection) accessor.getConnection()).causeCommError(); |
| } |
| |
| for (int i = 0; i < 4; ++i) { |
| try { |
| getEmulatedSession().acquireClientSession().readObject(Address.class); |
| } catch (DatabaseException ex) { |
| Assert.fail("Should have reconnected an not thrown exception."); |
| } |
| } |
| connections = new ArrayList<Accessor>(); |
| // prime connection pools. |
| for (int i = 0; i < 10; ++i) { |
| connections.add(getEmulatedSession().getConnectionPool("default").acquireConnection()); |
| } |
| for (Accessor accessor : connections) { |
| getEmulatedSession().getConnectionPool("default").releaseConnection(accessor); |
| } |
| list = getEmulatedSession().getReadConnectionPool().getConnectionsAvailable(); |
| for (Accessor accessor : list) { |
| ((EmulatedConnection) accessor.getConnection()).causeCommError(); |
| } |
| |
| for (int i = 0; i < 4; ++i) { |
| try { |
| ReadObjectQuery query = new ReadObjectQuery(Address.class); |
| query.setQueryTimeout(10000); |
| getEmulatedSession().acquireClientSession().executeQuery(query); |
| } catch (DatabaseException ex) { |
| if (i != 0) { |
| Assert.fail("Should have reconnected and not thrown exception."); |
| } |
| } |
| } |
| } |
| |
| } |