Examples with CacheLoaderException org.apache.geode.cache.CacheLoaderException used on opensource projects

Example 26 with CacheLoaderException

use of org.apache.geode.cache.CacheLoaderException in project geode by apache.

the class CacheLoaderTestCase method testCacheLoader.

/////////////////////// Test Methods ///////////////////////
@Test
public void testCacheLoader() throws CacheException {
    final String name = this.getUniqueName();
    final Object key = this.getUniqueName();
    final Object value = new Integer(42);
    final Object arg = "ARG";
    final String exception = "EXCEPTION";
    TestCacheLoader loader = new TestCacheLoader() {

        public Object load2(LoaderHelper helper) throws CacheLoaderException {
            assertEquals(key, helper.getKey());
            assertEquals(name, helper.getRegion().getName());
            try {
                RegionAttributes attrs = helper.getRegion().getAttributes();
                if (attrs.getScope().isDistributed()) {
                    assertNull(helper.netSearch(false));
                    assertNull(helper.netSearch(true));
                }
            } catch (TimeoutException ex) {
                Assert.fail("Why did I time out?", ex);
            }
            Object argument = helper.getArgument();
            if (argument != null) {
                if (argument.equals(exception)) {
                    String s = "Test Exception";
                    throw new CacheLoaderException(s);
                } else {
                    assertEquals(arg, argument);
                }
            }
            return value;
        }
    };
    AttributesFactory factory = new AttributesFactory(getRegionAttributes());
    factory.setCacheLoader(loader);
    Region region = createRegion(name, factory.create());
    loader.wasInvoked();
    Region.Entry entry = region.getEntry(key);
    assertNull(entry);
    region.create(key, null);
    entry = region.getEntry(key);
    assertNotNull(entry);
    assertNull(entry.getValue());
    assertEquals(value, region.get(key));
    assertTrue(loader.wasInvoked());
    assertEquals(value, region.getEntry(key).getValue());
}

Example 27 with CacheLoaderException

use of org.apache.geode.cache.CacheLoaderException in project geode by apache.

the class ProxyDUnitTest method remoteOriginOps.

/**
   * check remote ops done in a normal vm are correctly distributed to PROXY regions
   */
private void remoteOriginOps(DataPolicy dp, InterestPolicy ip) throws CacheException {
    initOtherId();
    AttributesFactory af = new AttributesFactory();
    af.setDataPolicy(dp);
    af.setSubscriptionAttributes(new SubscriptionAttributes(ip));
    af.setScope(Scope.DISTRIBUTED_ACK);
    CacheListener cl1 = new CacheListener() {

        public void afterUpdate(EntryEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterCreate(EntryEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterInvalidate(EntryEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterDestroy(EntryEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterRegionInvalidate(RegionEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterRegionDestroy(RegionEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterRegionClear(RegionEvent e) {
            clLastEvent = e;
            clInvokeCount++;
        }

        public void afterRegionCreate(RegionEvent e) {
        }

        public void afterRegionLive(RegionEvent e) {
        }

        public void close() {
        }
    };
    af.addCacheListener(cl1);
    Region r = createRootRegion("ProxyDUnitTest", af.create());
    this.clInvokeCount = 0;
    doCreateOtherVm();
    DMStats stats = getDMStats();
    long receivedMsgs = stats.getReceivedMessages();
    if (ip.isAll()) {
        getOtherVm().invoke(new CacheSerializableRunnable("do put") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.put("p", "v");
            }
        });
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.CREATE, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        // failure
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        assertEquals("v", ((EntryEvent) this.clLastEvent).getNewValue());
        assertEquals("p", ((EntryEvent) this.clLastEvent).getKey());
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do create") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.create("c", "v");
            }
        });
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.CREATE, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        assertEquals("v", ((EntryEvent) this.clLastEvent).getNewValue());
        assertEquals("c", ((EntryEvent) this.clLastEvent).getKey());
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do update") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.put("c", "v2");
            }
        });
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.UPDATE, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        assertEquals("v2", ((EntryEvent) this.clLastEvent).getNewValue());
        assertEquals("c", ((EntryEvent) this.clLastEvent).getKey());
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do invalidate") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.invalidate("c");
            }
        });
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.INVALIDATE, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getNewValue());
        assertEquals("c", ((EntryEvent) this.clLastEvent).getKey());
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do destroy") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.destroy("c");
            }
        });
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.DESTROY, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getNewValue());
        assertEquals("c", ((EntryEvent) this.clLastEvent).getKey());
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do putAll") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                Map m = new HashMap();
                m.put("putAllKey1", "putAllValue1");
                m.put("putAllKey2", "putAllValue2");
                r.putAll(m);
            }
        });
        assertEquals(2, this.clInvokeCount);
        // @todo darrel; check putAll events
        this.clInvokeCount = 0;
        getOtherVm().invoke(new CacheSerializableRunnable("do netsearch") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                // total miss
                assertEquals(null, r.get("loadkey"));
            }
        });
        assertEquals(0, this.clInvokeCount);
    } else {
        getOtherVm().invoke(new CacheSerializableRunnable("do entry ops") {

            public void run2() throws CacheException {
                Region r = getRootRegion("ProxyDUnitTest");
                r.put("p", "v");
                r.create("c", "v");
                // update
                r.put("c", "v");
                r.invalidate("c");
                r.destroy("c");
                {
                    Map m = new HashMap();
                    m.put("putAllKey1", "putAllValue1");
                    m.put("putAllKey2", "putAllValue2");
                    r.putAll(m);
                }
                // total miss
                assertEquals(null, r.get("loadkey"));
            }
        });
        assertEquals(0, this.clInvokeCount);
        assertEquals(0, r.size());
        // check the stats to make sure none of the above sent up messages
        assertEquals(receivedMsgs, stats.getReceivedMessages());
    }
    {
        AttributesMutator am = r.getAttributesMutator();
        CacheLoader cl = new CacheLoader() {

            public Object load(LoaderHelper helper) throws CacheLoaderException {
                if (helper.getKey().equals("loadkey")) {
                    return "loadvalue";
                } else if (helper.getKey().equals("loadexception")) {
                    throw new CacheLoaderException("expected");
                } else {
                    return null;
                }
            }

            public void close() {
            }
        };
        am.setCacheLoader(cl);
    }
    receivedMsgs = stats.getReceivedMessages();
    getOtherVm().invoke(new CacheSerializableRunnable("check net loader") {

        public void run2() throws CacheException {
            Region r = getRootRegion("ProxyDUnitTest");
            // net load
            assertEquals("loadvalue", r.get("loadkey"));
            // total miss
            assertEquals(null, r.get("foobar"));
            try {
                r.get("loadexception");
                fail("expected CacheLoaderException");
            } catch (CacheLoaderException expected) {
            }
        }
    });
    assertTrue(stats.getReceivedMessages() > receivedMsgs);
    if (ip.isAll()) {
        assertEquals(1, this.clInvokeCount);
        assertEquals(Operation.NET_LOAD_CREATE, this.clLastEvent.getOperation());
        assertEquals(true, this.clLastEvent.isOriginRemote());
        assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
        assertEquals(null, ((EntryEvent) this.clLastEvent).getOldValue());
        assertEquals(false, ((EntryEvent) this.clLastEvent).isOldValueAvailable());
        this.clInvokeCount = 0;
    } else {
        assertEquals(0, this.clInvokeCount);
    }
    {
        AttributesMutator am = r.getAttributesMutator();
        am.setCacheLoader(null);
        CacheWriter cw = new CacheWriterAdapter() {

            public void beforeCreate(EntryEvent event) throws CacheWriterException {
                throw new CacheWriterException("expected");
            }
        };
        am.setCacheWriter(cw);
    }
    receivedMsgs = stats.getReceivedMessages();
    getOtherVm().invoke(new CacheSerializableRunnable("check net write") {

        public void run2() throws CacheException {
            Region r = getRootRegion("ProxyDUnitTest");
            try {
                r.put("putkey", "putvalue");
                fail("expected CacheWriterException");
            } catch (CacheWriterException expected) {
            }
        }
    });
    assertTrue(stats.getReceivedMessages() > receivedMsgs);
    {
        AttributesMutator am = r.getAttributesMutator();
        am.setCacheWriter(null);
    }
    assertEquals(0, this.clInvokeCount);
    this.clLastEvent = null;
    getOtherVm().invoke(new CacheSerializableRunnable("check region invalidate") {

        public void run2() throws CacheException {
            Region r = getRootRegion("ProxyDUnitTest");
            r.invalidateRegion();
        }
    });
    assertEquals(1, this.clInvokeCount);
    assertEquals(Operation.REGION_INVALIDATE, this.clLastEvent.getOperation());
    assertEquals(true, this.clLastEvent.isOriginRemote());
    assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
    this.clLastEvent = null;
    getOtherVm().invoke(new CacheSerializableRunnable("check region clear") {

        public void run2() throws CacheException {
            Region r = getRootRegion("ProxyDUnitTest");
            r.clear();
        }
    });
    assertEquals(2, this.clInvokeCount);
    assertEquals(Operation.REGION_CLEAR, this.clLastEvent.getOperation());
    assertEquals(true, this.clLastEvent.isOriginRemote());
    assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
    this.clLastEvent = null;
    getOtherVm().invoke(new CacheSerializableRunnable("check region destroy") {

        public void run2() throws CacheException {
            Region r = getRootRegion("ProxyDUnitTest");
            r.destroyRegion();
        }
    });
    assertEquals(3, this.clInvokeCount);
    assertEquals(Operation.REGION_DESTROY, this.clLastEvent.getOperation());
    assertEquals(true, this.clLastEvent.isOriginRemote());
    assertEquals(this.otherId, this.clLastEvent.getDistributedMember());
    assertTrue(r.isDestroyed());
}

Example 28 with CacheLoaderException

use of org.apache.geode.cache.CacheLoaderException in project geode by apache.

the class SearchLoadAndWriteProcessor method doNetLoad.

Object doNetLoad() throws CacheLoaderException, TimeoutException {
    if (this.netLoadDone)
        return null;
    this.netLoadDone = true;
    if (advisor != null) {
        Set loadCandidatesSet = advisor.adviseNetLoad();
        if (loadCandidatesSet.isEmpty()) {
            return null;
        }
        CachePerfStats stats = region.getCachePerfStats();
        long start = stats.startNetload();
        ArrayList list = new ArrayList(loadCandidatesSet);
        Collections.shuffle(list);
        InternalDistributedMember[] loadCandidates = (InternalDistributedMember[]) list.toArray(new InternalDistributedMember[list.size()]);
        initRemainingTimeout();
        RegionAttributes attrs = region.getAttributes();
        int index = 0;
        // never set to true!
        boolean stayInLoop = false;
        this.remoteLoadInProgress = true;
        try {
            do {
                // the only time this loop repeats is when continue is called
                InternalDistributedMember next = loadCandidates[index++];
                setSelectedNode(next);
                this.lastNotifySpot = 0;
                this.requestInProgress = true;
                if (this.remainingTimeout <= 0) {
                    // @todo this looks wrong; why not a timeout exception?
                    break;
                }
                this.remoteException = null;
                NetLoadRequestMessage.sendMessage(this, this.regionName, this.key, this.aCallbackArgument, next, this.remainingTimeout, attrs.getEntryTimeToLive().getTimeout(), attrs.getEntryIdleTimeout().getTimeout());
                waitForObject2(this.remainingTimeout);
                if (this.remoteException == null) {
                    if (!this.requestInProgress) {
                        // note even if result is null we are done; see bug 39738
                        this.localLoad = false;
                        if (this.result != null) {
                            this.netLoad = true;
                        }
                        return this.result;
                    } else {
                        // even if we don't have a result yet and have not tried everyone.
                        if ((this.selectedNodeDead) && (index < loadCandidates.length)) {
                            continue;
                        }
                    // otherwise we are done
                    }
                } else {
                    Throwable cause;
                    if (this.remoteException instanceof TryAgainException) {
                        if (index < loadCandidates.length) {
                            continue;
                        } else {
                            break;
                        }
                    }
                    if (this.remoteException instanceof CacheLoaderException) {
                        cause = this.remoteException.getCause();
                    } else {
                        cause = this.remoteException;
                    }
                    throw new CacheLoaderException(LocalizedStrings.SearchLoadAndWriteProcessor_WHILE_INVOKING_A_REMOTE_NETLOAD_0.toLocalizedString(cause), cause);
                }
            } while (stayInLoop);
        } finally {
            stats.endNetload(start);
        }
    }
    return null;
}

Example 29 with CacheLoaderException

use of org.apache.geode.cache.CacheLoaderException in project geode by apache.

the class TXJUnitTest method testJTAEnlistment.

@Test
public void testJTAEnlistment() throws CacheException, javax.transaction.NotSupportedException, javax.transaction.RollbackException, javax.transaction.SystemException, javax.transaction.HeuristicMixedException, javax.transaction.HeuristicRollbackException {
    TransactionListener tl = new TransactionListener() {

        @Override
        public void afterCommit(TransactionEvent event) {
            ++listenerAfterCommit;
            te = event;
        }

        @Override
        public void afterFailedCommit(TransactionEvent event) {
            ++listenerAfterFailedCommit;
            te = event;
        }

        @Override
        public void afterRollback(TransactionEvent event) {
            ++listenerAfterRollback;
            te = event;
        }

        @Override
        public void close() {
            ++listenerClose;
        }
    };
    this.txMgr.addListener(tl);
    javax.transaction.UserTransaction userTx = null;
    try {
        userTx = (javax.transaction.UserTransaction) this.cache.getJNDIContext().lookup("java:/UserTransaction");
    } catch (VirtualMachineError e) {
        SystemFailure.initiateFailure(e);
        throw e;
    } catch (Throwable badDog) {
        fail("Expected to get a healthy UserTransaction!");
    }
    // Test enlistment for put
    // Test enlisted rollback
    // Test prevention of rollback/commit for enlisted transaction
    assertEquals(0, this.listenerAfterRollback);
    userTx.begin();
    this.region.put("enlistKey", "enlistVal");
    assertEquals("enlistVal", this.region.getEntry("enlistKey").getValue());
    assertNotNull(this.txMgr.getTransactionId());
    try {
        this.txMgr.rollback();
        fail("Should not allow a CacheTransactionManager.rollback call once the GF Tx is enlisted");
    } catch (VirtualMachineError e) {
        SystemFailure.initiateFailure(e);
        throw e;
    } catch (Throwable ok) {
    }
    try {
        this.txMgr.commit();
        fail("Should not allow a CacheTransactionManager.commit() call once the GF Tx is enlisted");
    } catch (VirtualMachineError e) {
        SystemFailure.initiateFailure(e);
        throw e;
    } catch (Throwable alsoOk) {
    }
    userTx.rollback();
    assertNull(this.txMgr.getTransactionId());
    assertTrue(!this.region.containsKey("enlistKey"));
    assertEquals(1, this.listenerAfterRollback);
    // Test enlistment for create
    // Test commit
    assertEquals(0, this.listenerAfterCommit);
    userTx.begin();
    this.region.create("enlistKey", "enlistVal");
    assertEquals("enlistVal", this.region.getEntry("enlistKey").getValue());
    assertNotNull(this.txMgr.getTransactionId());
    userTx.commit();
    assertNull(this.txMgr.getTransactionId());
    assertTrue(this.region.containsKey("enlistKey"));
    assertEquals("enlistVal", this.region.getEntry("enlistKey").getValue());
    assertEquals(1, this.listenerAfterCommit);
    // Test enlistment for get
    assertEquals(1, this.listenerAfterCommit);
    userTx.begin();
    assertEquals("enlistVal", this.region.get("enlistKey"));
    assertNotNull(this.txMgr.getTransactionId());
    userTx.commit();
    assertNull(this.txMgr.getTransactionId());
    assertEquals(2, this.listenerAfterCommit);
    // Test enlistment for invalidate
    assertEquals(2, this.listenerAfterCommit);
    userTx.begin();
    this.region.invalidate("enlistKey");
    assertTrue(this.region.containsKey("enlistKey"));
    assertTrue(!this.region.containsValueForKey("enlistKey"));
    assertNotNull(this.txMgr.getTransactionId());
    userTx.commit();
    assertNull(this.txMgr.getTransactionId());
    assertTrue(this.region.containsKey("enlistKey"));
    assertTrue(!this.region.containsValueForKey("enlistKey"));
    assertEquals(3, this.listenerAfterCommit);
    // Test enlistment for destroy
    assertEquals(3, this.listenerAfterCommit);
    userTx.begin();
    this.region.destroy("enlistKey");
    assertTrue(!this.region.containsKey("enlistKey"));
    assertNotNull(this.txMgr.getTransactionId());
    userTx.commit();
    assertNull(this.txMgr.getTransactionId());
    assertTrue(!this.region.containsKey("enlistKey"));
    assertEquals(4, this.listenerAfterCommit);
    // Test enlistment for load
    AttributesMutator<String, String> mutator = this.region.getAttributesMutator();
    mutator.setCacheLoader(new CacheLoader<String, String>() {

        int count = 0;

        @Override
        public String load(LoaderHelper helper) throws CacheLoaderException {
            return String.valueOf(count++);
        }

        @Override
        public void close() {
        }
    });
    assertEquals(4, this.listenerAfterCommit);
    userTx.begin();
    assertEquals("0", this.region.get("enlistKey"));
    assertNotNull(this.txMgr.getTransactionId());
    userTx.commit();
    assertNull(this.txMgr.getTransactionId());
    assertTrue(this.region.containsKey("enlistKey"));
    assertEquals("0", this.region.getEntry("enlistKey").getValue());
    assertEquals(5, this.listenerAfterCommit);
    mutator.setCacheLoader(null);
    // Test enlisted failed commit
    assertEquals(0, this.listenerAfterFailedCommit);
    userTx.begin();
    this.region.put("enlistKey", "enlistVal");
    assertEquals("enlistVal", this.region.get("enlistKey"));
    assertNotNull(this.txMgr.getTransactionId());
    {
        TXManagerImpl gfTxMgrImpl = (TXManagerImpl) this.txMgr;
        TXStateProxy gfTx = gfTxMgrImpl.internalSuspend();
        javax.transaction.TransactionManager jtaTxMgr = this.cache.getJTATransactionManager();
        javax.transaction.Transaction jtaTx = jtaTxMgr.suspend();
        this.region.put("enlistKey", "conflictVal");
        assertEquals("conflictVal", this.region.get("enlistKey"));
        try {
            jtaTxMgr.resume(jtaTx);
        } catch (Exception failure) {
            fail("JTA resume failed");
        }
        gfTxMgrImpl.internalResume(gfTx);
    }
    assertEquals("enlistVal", this.region.get("enlistKey"));
    try {
        userTx.commit();
        fail("Expected JTA commit exception!");
    } catch (javax.transaction.HeuristicRollbackException expected) {
    } catch (javax.transaction.RollbackException alsoExpected) {
    } catch (Exception yuk) {
        fail("Did not expect this exception from JTA commit: " + yuk);
    }
    assertNull(this.txMgr.getTransactionId());
    assertEquals("conflictVal", this.region.getEntry("enlistKey").getValue());
    assertEquals(1, this.listenerAfterFailedCommit);
    // Test rollbackOnly UserTransaction enlistment
    userTx.begin();
    assertNull(this.txMgr.getTransactionId());
    userTx.setRollbackOnly();
    assertEquals(javax.transaction.Status.STATUS_MARKED_ROLLBACK, userTx.getStatus());
    try {
        this.region.put("enlistKey", "enlistVal2");
        fail("Expected to get a FailedSynchronizationException!");
    } catch (FailedSynchronizationException okay) {
    }
    assertNull(this.txMgr.getTransactionId());
    try {
        assertEquals("conflictVal", this.region.getEntry("enlistKey").getValue());
        fail("Expected to get a FailedSynchronizationException!");
    } catch (FailedSynchronizationException okay) {
    }
    assertTrue(!this.region.containsKey("enlistKey2"));
    try {
        this.region.put("enlistKey2", "enlistVal3");
        fail("Expected to get a FailedSynchronizationException!");
    } catch (FailedSynchronizationException okay) {
    }
    assertNull(this.txMgr.getTransactionId());
    try {
        assertEquals("conflictVal", this.region.getEntry("enlistKey").getValue());
        fail("Expected to get a FailedSynchronizationException!");
    } catch (FailedSynchronizationException okay) {
    }
    assertTrue(!this.region.containsKey("enlistKey2"));
    userTx.rollback();
    assertEquals("conflictVal", this.region.getEntry("enlistKey").getValue());
    assertTrue(!this.region.containsKey("enlistKey2"));
    this.txMgr.removeListener(tl);
}

Example 30 with CacheLoaderException

use of org.apache.geode.cache.CacheLoaderException in project geode by apache.

the class DiskRegionDUnitTest method testLRUCCSizeOne.

/**
   * Tests a disk-based region with an {@link LRUCapacityController} with size 1 and an eviction
   * action of "overflow".
   */
@Test
public void testLRUCCSizeOne() throws CacheException {
    int threshold = 1;
    final String name = this.getUniqueName();
    AttributesFactory factory = new AttributesFactory();
    factory.setScope(Scope.LOCAL);
    factory.setEvictionAttributes(EvictionAttributes.createLRUEntryAttributes(threshold, EvictionAction.OVERFLOW_TO_DISK));
    factory.setCacheLoader(new CacheLoader() {

        public Object load(LoaderHelper helper) throws CacheLoaderException {
            return "LOADED VALUE";
        }

        public void close() {
        }
    });
    DiskStoreFactory dsf = getCache().createDiskStoreFactory();
    factory.setDiskSynchronous(true);
    File d = new File("DiskRegions" + OSProcess.getId());
    d.mkdirs();
    dsf.setDiskDirs(new File[] { d });
    DiskStore ds = dsf.create(name);
    factory.setDiskStoreName(ds.getName());
    Region region = createRegion(name, factory.create());
    LRUStatistics lruStats = getLRUStats(region);
    assertNotNull(lruStats);
    for (int i = 1; i <= 1; i++) {
        Object key = new Integer(i);
        Object value = String.valueOf(i);
        region.put(key, value);
        assertEquals(1, lruStats.getCounter());
        assertEquals(0, lruStats.getEvictions());
    }
    for (int i = 2; i <= 10; i++) {
        Object key = new Integer(i);
        Object value = String.valueOf(i);
        region.put(key, value);
        assertEquals(1, lruStats.getCounter());
        assertEquals(i - 1, lruStats.getEvictions());
    }
    for (int i = 11; i <= 20; i++) {
        Object key = new Integer(i);
        // Object value = String.valueOf(i);
        // Invoke loader
        region.get(key);
        assertEquals(1, lruStats.getCounter());
        assertEquals(i - 1, lruStats.getEvictions());
    }
}