abstractcollectionregionaccessstrategytestcase.java

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                    // Let the first PFER propagate
                    sleep(200);
                    
                    if (useMinimalAPI) {
                        remoteAccessStrategy.putFromLoad(KEY, VALUE1, txTimestamp, new Integer(1), true);                        
                    }
                    else {
                        remoteAccessStrategy.putFromLoad(KEY, VALUE1, txTimestamp, new Integer(1));
                    }
                    
                    BatchModeTransactionManager.getInstance().commit();
                }
                catch (Exception e) {
                    log.error("node2 caught exception", e);
                    node2Exception = e;
                    rollback();
                }
                catch (AssertionFailedError e) {
                    node2Failure = e;
                    rollback();
                }
                finally {
                    completionLatch.countDown();
                }
            }
        };
        
        node1.setDaemon(true);
        node2.setDaemon(true);
        
        node1.start();
        node2.start();        
        
        assertTrue("Threads completed", completionLatch.await(2, TimeUnit.SECONDS));
        
        if (node1Failure != null)
            throw node1Failure;
        if (node2Failure != null)
            throw node2Failure;
        
        assertEquals("node1 saw no exceptions", null, node1Exception);
        assertEquals("node2 saw no exceptions", null, node2Exception);
        
        // let the final PFER propagate
        sleep(100);
        
        long txTimestamp = System.currentTimeMillis();
        String msg1 = "Correct node1 value";
        String msg2 = "Correct node2 value";
        Object expected1 = null;
        Object expected2 = null;
        if (isUsingInvalidation()) {
            // PFER does not generate any invalidation, so each node should
            // succeed. We count on database locking and Hibernate removing
            // the collection on any update to prevent the situation we have
            // here where the caches have inconsistent data
            expected1 = VALUE2;
            expected2 = VALUE1;
        }
        else {
            // the initial VALUE2 should prevent the node2 put
            expected1 = VALUE2;
            expected2 = VALUE2;
        }
        
        assertEquals(msg1, expected1, localAccessStrategy.get(KEY, txTimestamp));        
        assertEquals(msg2, expected2, remoteAccessStrategy.get(KEY, txTimestamp));
    }

    /**
     * Test method for {@link TransactionalAccess#remove(java.lang.Object)}.
     */
    public void testRemove() {
        evictOrRemoveTest(false);
    }

    /**
     * Test method for {@link TransactionalAccess#removeAll()}.
     */
    public void testRemoveAll() {
        evictOrRemoveAllTest(false);
    }

    /**
     * Test method for {@link TransactionalAccess#evict(java.lang.Object)}.
     * 
     * FIXME add testing of the "immediately without regard for transaction
     * isolation" bit in the CollectionRegionAccessStrategy API.
     */
    public void testEvict() {
        evictOrRemoveTest(true);
    }

    /**
     * Test method for {@link TransactionalAccess#evictAll()}.
     * 
     * FIXME add testing of the "immediately without regard for transaction
     * isolation" bit in the CollectionRegionAccessStrategy API.
     */
    public void testEvictAll() {
        evictOrRemoveAllTest(true);
    }

    private void evictOrRemoveTest(boolean evict) {
       
        final String KEY = KEY_BASE + testCount++;
        
        assertNull("local is clean", localAccessStrategy.get(KEY, System.currentTimeMillis()));
        assertNull("remote is clean", remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        localAccessStrategy.putFromLoad(KEY, VALUE1, System.currentTimeMillis(), new Integer(1));
        assertEquals(VALUE1, localAccessStrategy.get(KEY, System.currentTimeMillis()));
        remoteAccessStrategy.putFromLoad(KEY, VALUE1, System.currentTimeMillis(), new Integer(1));
        assertEquals(VALUE1, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        // Wait for async propagation
        sleep(250);
        
        if (evict)
            localAccessStrategy.evict(KEY);
        else
            localAccessStrategy.remove(KEY);
        
        assertEquals(null, localAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        assertEquals(null, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
    }

    private void evictOrRemoveAllTest(boolean evict) {
       
        final String KEY = KEY_BASE + testCount++;
        
        Fqn regionFqn = getRegionFqn(REGION_NAME, REGION_PREFIX);
        
        Node regionRoot = localCache.getRoot().getChild(regionFqn);
        assertFalse(regionRoot == null);
        assertEquals(0, getValidChildrenCount(regionRoot));
        assertTrue(regionRoot.isResident());
        
        if (isUsingOptimisticLocking()) {
            assertEquals(NonLockingDataVersion.class, ((NodeSPI) regionRoot).getVersion().getClass());
        }

        regionRoot = remoteCache.getRoot().getChild(regionFqn);
        assertFalse(regionRoot == null);
        assertEquals(0, getValidChildrenCount(regionRoot));
        assertTrue(regionRoot.isResident());
        
        if (isUsingOptimisticLocking()) {
            assertEquals(NonLockingDataVersion.class, ((NodeSPI) regionRoot).getVersion().getClass());
        }
        
        assertNull("local is clean", localAccessStrategy.get(KEY, System.currentTimeMillis()));
        assertNull("remote is clean", remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        localAccessStrategy.putFromLoad(KEY, VALUE1, System.currentTimeMillis(), new Integer(1));
        assertEquals(VALUE1, localAccessStrategy.get(KEY, System.currentTimeMillis()));
        remoteAccessStrategy.putFromLoad(KEY, VALUE1, System.currentTimeMillis(), new Integer(1));
        assertEquals(VALUE1, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        // Wait for async propagation
        sleep(250);
        
        if (isUsingOptimisticLocking()) {
            regionRoot = localCache.getRoot().getChild(regionFqn);
            assertEquals(NonLockingDataVersion.class, ((NodeSPI) regionRoot).getVersion().getClass());
            regionRoot = remoteCache.getRoot().getChild(regionFqn);
            assertEquals(NonLockingDataVersion.class, ((NodeSPI) regionRoot).getVersion().getClass());
        }
        
        if (evict)
            localAccessStrategy.evictAll();
        else
            localAccessStrategy.removeAll();
        
        // This should re-establish the region root node in the optimistic case
        assertNull(localAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        regionRoot = localCache.getRoot().getChild(regionFqn);
        if (isUsingOptimisticLocking()) {
            assertFalse(regionRoot == null);
            assertEquals(0, getValidChildrenCount(regionRoot));
            assertTrue(regionRoot.isValid());
            assertTrue(regionRoot.isResident());
        }
        else {
            assertTrue("region root is removed", regionRoot == null || !regionRoot.isValid());
        }

        // Re-establishing the region root on the local node doesn't 
        // propagate it to other nodes. Do a get on the remote node to re-establish
        // This only adds a node in the case of optimistic locking
        assertEquals(null, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));

        regionRoot = remoteCache.getRoot().getChild(regionFqn);
        if (isUsingOptimisticLocking()) {
           assertFalse(regionRoot == null);
           assertTrue(regionRoot.isValid());
           assertTrue(regionRoot.isResident());
           // Not invalidation, so we didn't insert a child above
           assertEquals(0, getValidChildrenCount(regionRoot));
        }        
        else {
            assertTrue("region root is removed", regionRoot == null || !regionRoot.isValid());
        }
        
        // Test whether the get above messes up the optimistic version
        remoteAccessStrategy.putFromLoad(KEY, VALUE1, System.currentTimeMillis(), new Integer(1));
        assertEquals(VALUE1, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
        
        // Revalidate the region root
        regionRoot = remoteCache.getRoot().getChild(regionFqn);
        assertFalse(regionRoot == null);
        assertTrue(regionRoot.isValid());
        assertTrue(regionRoot.isResident());
        // Region root should have 1 child -- the one we added above
        assertEquals(1, getValidChildrenCount(regionRoot));
        
        // Wait for async propagation of the putFromLoad
        sleep(250);
        
        assertEquals("local is correct", (isUsingInvalidation() ? null : VALUE1), localAccessStrategy.get(KEY, System.currentTimeMillis()));
        assertEquals("remote is correct", VALUE1, remoteAccessStrategy.get(KEY, System.currentTimeMillis()));
    }
    
    private int getValidChildrenCount(Node node) {
        int result = 0;
        for (Iterator it = node.getChildren().iterator(); it.hasNext(); ) {
           if (((Node) it.next()).isValid()) {
              result++;
           }
        }
        return result;        
    }
    
    private void rollback() {
        try {
            BatchModeTransactionManager.getInstance().rollback();
        }
        catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        
    }
    
    private static class AccessStrategyTestSetup extends TestSetup {
        
        private static final String PREFER_IPV4STACK = "java.net.preferIPv4Stack";
        
        private String configName;
        private String preferIPv4Stack;
        
        public AccessStrategyTestSetup(Test test, String configName) {
            super(test);
            this.configName = configName;
        }

        @Override
        protected void setUp() throws Exception {
            super.setUp();  
            
            // Try to ensure we use IPv4; otherwise cluster formation is very slow 
            preferIPv4Stack = System.getProperty(PREFER_IPV4STACK);
            System.setProperty(PREFER_IPV4STACK, "true");
            
            localCfg = createConfiguration(configName);
            localRegionFactory = CacheTestUtil.startRegionFactory(localCfg);
            localCache = localRegionFactory.getCacheInstanceManager().getCollectionCacheInstance();
            
            remoteCfg = createConfiguration(configName);
            remoteRegionFactory  = CacheTestUtil.startRegionFactory(remoteCfg);
            remoteCache = remoteRegionFactory.getCacheInstanceManager().getCollectionCacheInstance();
        }

        @Override
        protected void tearDown() throws Exception {      
            try {
                super.tearDown();
            }
            finally {
                if (preferIPv4Stack == null)
                    System.clearProperty(PREFER_IPV4STACK);
                else 
                    System.setProperty(PREFER_IPV4STACK, preferIPv4Stack);                
            }
            
            if (localRegionFactory != null)
                localRegionFactory.stop();
            
            if (remoteRegionFactory != null)
                remoteRegionFactory.stop();
        }
        
        
    }

}