/** Tests the loading of classes */
@Test
public void testClassloading() throws Exception {
final Store diskStore = createDiskStore();
Long value = Long.valueOf(123L);
diskStore.put(new Element("key1", value));
diskStore.put(new Element("key2", value));
Thread.sleep(1000);
Element element1 = diskStore.get("key1");
Element element2 = diskStore.get("key2");
assertEquals(value, element1.getObjectValue());
assertEquals(value, element2.getObjectValue());
Primitive primitive = new Primitive();
primitive.integerPrimitive = 123;
primitive.longPrimitive = 456L;
primitive.bytePrimitive = "a".getBytes()[0];
primitive.charPrimitive = 'B';
primitive.booleanPrimitive = false;
// test Serializability
ByteArrayOutputStream outstr = new ByteArrayOutputStream();
ObjectOutputStream objstr = new ObjectOutputStream(outstr);
objstr.writeObject(new Element("key", value));
objstr.close();
diskStore.put(new Element("primitive1", primitive));
diskStore.put(new Element("primitive2", primitive));
Thread.sleep(1000);
Element primitive1 = diskStore.get("primitive1");
Element primitive2 = diskStore.get("primitive2");
assertEquals(primitive, primitive1.getObjectValue());
assertEquals(primitive, primitive2.getObjectValue());
}
/** {@inheritDoc} */
@Override
public boolean validateToken(TokenKey tokenKey, String token) throws TokenException {
for (Object key : tokenCache.getKeys()) {
logger.debug("KEY = " + key.toString());
Element element = tokenCache.get(key);
if (element != null) {
logger.debug("Value = " + element.getObjectValue().toString());
} else {
logger.debug("No value found for key: {}", key.toString());
}
}
boolean foundMatch = false;
Element element = tokenCache.get(tokenKey);
if (element != null) {
logger.debug("Cache hit for {} : {}", tokenKey);
String value = (String) element.getObjectValue();
if (value != null && value.equals(token)) {
logger.debug("Cached token = {}", token);
foundMatch = true;
}
} else {
logger.debug("No Cache hit for {} : {}", tokenKey);
}
return foundMatch;
}
/** {@inheritDoc} */
public SoftLockID createSoftLockID(
TransactionID transactionID, Object key, Element newElement, Element oldElement) {
if (newElement != null && newElement.getObjectValue() instanceof SoftLockID) {
throw new AssertionError("newElement must not contain a soft lock ID");
}
if (oldElement != null && oldElement.getObjectValue() instanceof SoftLockID) {
throw new AssertionError("oldElement must not contain a soft lock ID");
}
SoftLockID lockId = new SoftLockID(transactionID, key, newElement, oldElement);
if (getAllLocks().containsKey(lockId)) {
return lockId;
} else {
SoftLock lock = lockFactory.newSoftLock(this, key);
if (getAllLocks().putIfAbsent(lockId, lock) != null) {
throw new AssertionError();
} else {
if (oldElement == null) {
getNewKeyLocks().put(lockId, Boolean.TRUE);
}
return lockId;
}
}
}
/**
* Gets a parsed query for the passed in parameters. If the ParsedQuery requested has already been
* created on this app node, it will retrieve it from a cache instead of recreating it. Use this
* method instead of parseQuery if a cached copy is acceptable (almost always).
*
* @param db Database that the query will run against
* @param toParse Query to be parsed.
* @param session Database session.
* @return a PreparedStatement to use.
*/
public static ParsedQuery getParsedQuery(String db, Query toParse, Session session)
throws FieldNotIndexedException {
if (db == null || db.trim().equals("")) {
throw new IllegalArgumentException("Query must be populated.");
}
if (toParse == null) {
throw new IllegalArgumentException("Query cannot be null.");
}
final String key = db + ":" + toParse.getTable() + ":" + toParse.getWhere();
// StopWatch pull = new StopWatch();
// pull.start();
Cache c = CacheFactory.getCache("parsedQuery");
// synchronized (CacheSynchronizer.getLockingObject(key, ParsedQuery.class))
// {
Element e = c.get(key);
// pull.stop();
// logger.debug("Time to pull a parsed query from cache: " + pull.getTime());
if (e == null) {
logger.debug("Creating new ParsedQuery for: " + key);
// StopWatch sw = new StopWatch();
// sw.start();
e = new Element(key, parseQuery(db, toParse, session));
c.put(e);
// sw.stop();
// logger.debug("Time to create a new parsed query: " + sw.getTime());
} else {
logger.trace("Pulling ParsedQuery from Cache: " + e.getObjectValue().toString());
}
return (ParsedQuery) e.getObjectValue();
// }
}
/** {@inheritDoc} */
public Set<Object> getKeysInvisibleInContext(
LocalTransactionContext currentTransactionContext, Store underlyingStore) {
Set<Object> invisibleKeys = new HashSet<Object>();
// all new keys added into the store are invisible
invisibleKeys.addAll(getNewKeys());
List<SoftLock> currentTransactionContextSoftLocks =
currentTransactionContext.getSoftLocksForCache(cacheName);
for (SoftLock softLock : currentTransactionContextSoftLocks) {
Element e = underlyingStore.getQuiet(softLock.getKey());
if (e.getObjectValue() instanceof SoftLockID) {
SoftLockID softLockId = (SoftLockID) e.getObjectValue();
if (softLock.getElement(currentTransactionContext.getTransactionId(), softLockId) == null) {
// if the soft lock's element is null in the current transaction then the key is invisible
invisibleKeys.add(softLock.getKey());
} else {
// if the soft lock's element is not null in the current transaction then the key is
// visible
invisibleKeys.remove(softLock.getKey());
}
}
}
return invisibleKeys;
}
protected Image getImage(Object element) {
if (!(element instanceof Attachment)) {
return null;
}
Attachment attachment = (Attachment) element;
Image thumb = null;
if (Arrays.asList(Attachment.getImageMimeTypes()).contains(attachment.getMimeType())) {
Element cacheElement = getCache().get(attachment.getDbId());
if (cacheElement != null) {
// != is correct here
if (cacheElement.getObjectValue() != EMPTY_CACHE_ELEMENT) {
ImageData imageData = (ImageData) cacheElement.getObjectValue();
thumb = new Image(FileView.getDisplay(), imageData);
}
} else {
byte[] fileData = loadFileData(attachment);
thumb = createImage(fileData);
if (thumb != null) {
getCache().put(new Element(attachment.getDbId(), thumb.getImageData()));
} else {
getCache().put(new Element(attachment.getDbId(), EMPTY_CACHE_ELEMENT));
}
}
}
return thumb;
}
@RequestMapping("{cacheName}/{key}/details")
@ResponseBody
public Object keyDetail(
@PathVariable("cacheName") String cacheName, @PathVariable("key") String key, Model model) {
Element element = cacheManager.getCache(cacheName).get(key);
String dataPattern = "yyyy-MM-dd hh:mm:ss";
Map<String, Object> data = Maps.newHashMap();
data.put("objectValue", element.getObjectValue().toString());
data.put("size", PrettyMemoryUtils.prettyByteSize(element.getSerializedSize()));
data.put("hitCount", element.getHitCount());
Date latestOfCreationAndUpdateTime = new Date(element.getLatestOfCreationAndUpdateTime());
data.put(
"latestOfCreationAndUpdateTime",
DateFormatUtils.format(latestOfCreationAndUpdateTime, dataPattern));
Date lastAccessTime = new Date(element.getLastAccessTime());
data.put("lastAccessTime", DateFormatUtils.format(lastAccessTime, dataPattern));
if (element.getExpirationTime() == Long.MAX_VALUE) {
data.put("expirationTime", "不过期");
} else {
Date expirationTime = new Date(element.getExpirationTime());
data.put("expirationTime", DateFormatUtils.format(expirationTime, dataPattern));
}
data.put("timeToIdle", element.getTimeToIdle());
data.put("timeToLive", element.getTimeToLive());
data.put("version", element.getVersion());
return data;
}
/**
* Retrieve the content of a topic from the cache, or if it is not yet in the cache then add it to
* the cache.
*
* @param context The servlet context for the topic being retrieved. May be <code>null</code> if
* the <code>cook</code> parameter is set to <code>false</code>.
* @param locale The locale for the topic being retrieved. May be <code>null</code> if the <code>
* cook</code> parameter is set to <code>false</code>.
* @param virtualWiki The virtual wiki for the topic being retrieved.
* @param topicName The name of the topic being retrieved.
* @param cook A parameter indicating whether or not the content should be parsed before it is
* added to the cache. Stylesheet content (CSS) is not parsed, but most other content is
* parsed.
* @return The parsed or unparsed (depending on the <code>cook</code> parameter) topic content.
*/
protected static String cachedContent(
String context, Locale locale, String virtualWiki, String topicName, boolean cook) {
String content = null;
String key = WikiCache.key(virtualWiki, topicName);
Element cacheElement = WikiCache.retrieveFromCache(WikiBase.CACHE_PARSED_TOPIC_CONTENT, key);
if (cacheElement != null) {
content = (String) cacheElement.getObjectValue();
return (content == null) ? null : new String(content);
}
try {
Topic topic = WikiBase.getDataHandler().lookupTopic(virtualWiki, topicName, false, null);
content = topic.getTopicContent();
if (cook) {
ParserInput parserInput = new ParserInput();
parserInput.setContext(context);
parserInput.setLocale(locale);
parserInput.setVirtualWiki(virtualWiki);
parserInput.setTopicName(topicName);
content = Utilities.parse(parserInput, null, content);
}
WikiCache.addToCache(WikiBase.CACHE_PARSED_TOPIC_CONTENT, key, content);
} catch (Exception e) {
logger.warning("error getting cached page " + virtualWiki + " / " + topicName, e);
return null;
}
return content;
}
/*
* Instantiate MediaFile by path name. Only to be used by file based browser.
*/
public MediaFile getNonIndexedMediaFile(File file) {
int fileId = -Math.abs(file.getAbsolutePath().hashCode());
LOG.debug(
"request for non indexed media file " + file.getAbsolutePath() + ", cache as " + fileId);
Element element = mediaFileCache.get(fileId);
if (element != null) {
// Check if cache is up-to-date.
MediaFile cachedMediaFile = (MediaFile) element.getObjectValue();
if (cachedMediaFile.lastModified() >= file.lastModified()) {
return cachedMediaFile;
}
}
if (!securityService.isReadAllowed(file)) {
throw new SecurityException("Access denied to file " + file);
}
MediaFile mediaFile = new MediaFile(fileId, file);
mediaFileCache.put(new Element(fileId, mediaFile));
return mediaFile;
}
@Override
public Ticket getTicket(final String ticketIdToGet) {
final String ticketId = encodeTicketId(ticketIdToGet);
if (ticketId == null) {
return null;
}
final Element element = this.ehcacheTicketsCache.get(ticketId);
if (element == null) {
logger.debug("No ticket by id [{}] is found in the registry", ticketId);
return null;
}
final Ticket ticket = decodeTicket((Ticket) element.getObjectValue());
final CacheConfiguration config = new CacheConfiguration();
config.setTimeToIdleSeconds(ticket.getExpirationPolicy().getTimeToIdle());
config.setTimeToLiveSeconds(ticket.getExpirationPolicy().getTimeToIdle());
if (element.isExpired(config) || ticket.isExpired()) {
logger.debug("Ticket {} has expired", ticket.getId());
this.ehcacheTicketsCache.evictExpiredElements();
this.ehcacheTicketsCache.flush();
return null;
}
return ticket;
}
/**
* 获取系统设置
*
* @return 系统设置
*/
public static Setting get() {
Ehcache cache = cacheManager.getEhcache(Setting.CACHE_NAME);
net.sf.ehcache.Element cacheElement = cache.get(Setting.CACHE_KEY);
Setting setting;
if (cacheElement != null) {
setting = (Setting) cacheElement.getObjectValue();
} else {
setting = new Setting();
try {
File shopxxXmlFile = new ClassPathResource(CommonAttributes.SHOPXX_XML_PATH).getFile();
Document document = new SAXReader().read(shopxxXmlFile);
List<Element> elements = document.selectNodes("/shopxx/setting");
for (Element element : elements) {
String name = element.attributeValue("name");
String value = element.attributeValue("value");
try {
beanUtils.setProperty(setting, name, value);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
cache.put(new net.sf.ehcache.Element(Setting.CACHE_KEY, setting));
}
return setting;
}
private PagsGroup initGroupDef(IPersonAttributesGroupDefinition group) {
Element element = this.pagsGroupCache.get(group.getName());
if (element != null) {
return (PagsGroup) element.getObjectValue();
}
PagsGroup groupDef = new PagsGroup();
groupDef.setKey(group.getName());
groupDef.setName(group.getName());
groupDef.setDescription(group.getDescription());
addMemberKeys(groupDef, group.getMembers());
Set<IPersonAttributesGroupTestGroupDefinition> testGroups = group.getTestGroups();
for (IPersonAttributesGroupTestGroupDefinition testGroup : testGroups) {
TestGroup tg = new TestGroup();
Set<IPersonAttributesGroupTestDefinition> tests = testGroup.getTests();
for (IPersonAttributesGroupTestDefinition test : tests) {
IPersonTester testerInst = initializeTester(test);
if (testerInst == null) {
/*
* A tester was intended that we cannot now recreate. This
* is a potentially dangerous situation, since tests in PAGS
* are "or-ed" together; a functioning group with a missing
* test would have a wider membership, not narrower. (And
* remember -- permissions are tied to groups.) We need to
* play it safe and keep this group out of the mix.
*/
return null;
}
tg.addTest(testerInst);
}
groupDef.addTestGroup(tg);
}
element = new Element(group.getName(), groupDef);
this.pagsGroupCache.put(element);
return groupDef;
}
/** 拦截 Service/DAO 的方法，并查找该结果是否存在，如果存在就返回 cache 中的值， 否则，返回数据库查询结果，并将查询结果放入 cache */
@Override
public Object invoke(MethodInvocation invocation) throws Throwable {
String targetName = invocation.getThis().getClass().getName();
String methodName = invocation.getMethod().getName();
Object[] arguments = invocation.getArguments();
Object result;
String cacheKey = getCacheKey(targetName, methodName, arguments);
logger.info("从[" + cache.getName() + "]查询key:[" + cacheKey + "]的缓存]");
// System.out.println("从["+cache.getName()+"]查询key:["+cacheKey+"]的缓存]");
Element element = cache.get(cacheKey);
if (element == null) {
result = invocation.proceed();
logger.info("key:[" + cacheKey + "]无缓存，创建缓存为[" + result + "]");
// System.out.println("key:["+cacheKey+"]无缓存，创建缓存为["+result+"]");
element = new Element(cacheKey, (Serializable) result);
cache.put(element);
}
return element.getObjectValue();
}
@Override
@Transactional
public Parameter getParameter(String key) {
Element element = getParameterElement(key);
if (element == null) return null;
return (Parameter) element.getObjectValue();
}
private Element getFromUnderlyingStore(final Object key) {
while (true) {
long timeLeft = assertNotTimedOut();
LOG.debug(
"cache {} underlying.get key {} not timed out, time left: " + timeLeft,
cache.getName(),
key);
Element element = underlyingStore.get(key);
if (element == null) {
return null;
}
Object value = element.getObjectValue();
if (value instanceof SoftLockID) {
SoftLockID softLockId = (SoftLockID) value;
SoftLock softLock = softLockManager.findSoftLockById(softLockId);
if (softLock == null) {
LOG.debug(
"cache {} underlying.get key {} soft lock died, retrying...", cache.getName(), key);
continue;
} else {
try {
LOG.debug("cache {} key {} soft locked, awaiting unlock...", cache.getName(), key);
if (softLock.tryLock(timeLeft)) {
softLock.clearTryLock();
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
} else {
return element;
}
}
}
@Override
public Task getTask(TaskID taskID, boolean loadCompletely, boolean forceAPICall) {
if (taskID == null) {
throw new NullPointerException();
}
Task task;
if (cacheActivated) {
if (!forceAPICall) {
Element element = cache.get(taskID);
if (element != null) {
task = (Task) element.getObjectValue();
if (loadCompletely && !((Cachable) task).isCompletelyLoaded()) {
task = getDataFactory().getTask(taskID, loadCompletely);
}
} else {
task = getDataFactory().getTask(taskID, loadCompletely);
}
} else {
task = getDataFactory().getTask(taskID, loadCompletely);
}
if (task != null) {
cache.put(new Element(task.getID(), task));
}
} else {
task = getDataFactory().getTask(taskID, loadCompletely);
}
return task;
}
/**
* Refresh a single element.
*
* @param element the Element to refresh
* @param backingCache the underlying {@link Ehcache}.
* @param quiet whether to use putQuiet or not, if true replication will not occur
* @return the refreshed Element
* @throws Exception
* @since 1.6.1
*/
protected Element refreshElement(final Element element, Ehcache backingCache, boolean quiet)
throws Exception {
Object key = element.getObjectKey();
if (LOG.isLoggable(Level.FINE)) {
LOG.fine(getName() + ": refreshing element with key " + key);
}
final Element replacementElement;
if (factory instanceof UpdatingCacheEntryFactory) {
// update the value of the cloned Element in place
replacementElement = element;
((UpdatingCacheEntryFactory) factory)
.updateEntryValue(key, replacementElement.getObjectValue());
// put the updated element back into the backingCache, without updating stats
// It is not usually necessary to do this. We do this in case the element expired
// or idles out of the backingCache. In that case we hold a reference to it but the
// backingCache no longer does.
} else {
final Object value = factory.createEntry(key);
replacementElement = makeAndCheckElement(key, value);
}
if (quiet) {
backingCache.putQuiet(replacementElement);
} else {
backingCache.put(replacementElement);
}
return replacementElement;
}
public static void main(String args[]) {
Map<Object, Element> map = new HashMap<Object, Element>();
List<String> list = new ArrayList<String>();
// Create a cache manager
CacheManager cacheManager = CacheManager.getInstance();
// Creates a cache called newCache
cacheManager.addCache("newCache");
// Get cache called newCache
Cache cache = cacheManager.getCache("newCache");
StatisticsGateway stats = cache.getStatistics();
// put into cache
cache.put(new Element("1", "Monday"));
list.add("1");
cache.put(new Element("2", "Tuesday"));
list.add("2");
cache.put(new Element("3", "Wednesday"));
list.add("3");
cache.put(new Element("4", "Thursday"));
list.add("4");
// Displaying all elements
System.out.println("All elements");
map = cache.getAll(list);
Iterator it = map.entrySet().iterator();
while (it.hasNext()) {
Map.Entry pair = (Map.Entry) it.next();
System.out.println(pair.getKey() + " = " + pair.getValue());
}
// Displaying elements and size of cache
Element element = cache.get("1");
System.out.println("Value of key 1 :" + element.getObjectValue().toString());
System.out.println("Cache Size " + cache.getSize());
element = cache.get("2");
System.out.println("Value of key 2 :" + element.getObjectValue().toString());
System.out.println("Cache Size " + cache.getSize());
cache.removeElement(element);
System.out.println("Cache Size after removing an element : " + cache.getSize());
cache.flush();
System.out.println("Removed Cache with key 3 :" + cache.remove("3"));
System.out.println("Size after remove : " + cache.getSize());
}
public Object attributeFor(Element element, String attributeName) {
if (!attributeName.equals("age")) {
throw new AssertionError(attributeName);
}
Person person = (Person) element.getObjectValue();
return person.getAge();
}
/**
* Determine if diff information is available in the cache. If so return it, otherwise return
* <code>null</code>.
*/
private static List<WikiDiff> retrieveFromCache(String newVersion, String oldVersion)
throws DataAccessException {
String key = generateCacheKey(newVersion, oldVersion);
Element cachedDiffInformation = WikiCache.retrieveFromCache(CACHE_DIFF_INFORMATION, key);
return (cachedDiffInformation != null)
? (List<WikiDiff>) cachedDiffInformation.getObjectValue()
: null;
}
/*
* (non-Javadoc)
*
* @see net.jawr.web.cache.AbstractCacheManager#get(java.lang.String)
*/
public Object get(String key) {
Element element = cache.get(key);
if (element != null) {
return element.getObjectValue();
}
return null;
}
@Override
public Object get(final Object key) {
final Element value = impl.get(key);
if (null == value) return null;
return value.getObjectValue();
}
/*
* (non-Javadoc)
*
* @see
* net.sf.ehcache.constructs.web.filter.CachingFilter#buildPageInfo(javax
* .servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
* javax.servlet.FilterChain)
*/
@Override
protected PageInfo buildPageInfo(
HttpServletRequest request, HttpServletResponse response, FilterChain chain)
throws Exception {
String key = calculateKey(request);
PageInfo pageInfo = null;
String originalThreadName = Thread.currentThread().getName();
try {
// checkNoReentry(request);
Element element = null;
if (!StringUtils.isBlank(key)) {
element = this.blockingCache.get(key);
}
if ((element == null) || (element.getObjectValue() == null))
try {
pageInfo = buildPage(request, response, chain);
if (pageInfo.isOk()) {
log.debug(
"PageInfo ok. Adding to cache "
+ this.blockingCache.getName()
+ " with key "
+ key);
this.blockingCache.put(new Element(key, pageInfo));
} else {
log.warn(
"PageInfo was not ok(200). Putting null into cache "
+ this.blockingCache.getName()
+ " with key "
+ key);
this.blockingCache.put(new Element(key, null));
}
} catch (Throwable throwable) {
this.blockingCache.put(new Element(key, null));
throw new Exception(throwable);
}
else {
pageInfo = (PageInfo) element.getObjectValue();
}
} catch (LockTimeoutException e) {
throw e;
} finally {
Thread.currentThread().setName(originalThreadName);
}
return pageInfo;
}
@Override
public int getLBServerOffset(PageLetConfig pageLetConfig) {
int offset = -1;
Element element = this.cchm.getCache("lb").get(pageLetConfig.getURI());
if (null != element) {
offset = (int) element.getObjectValue();
}
return offset;
}
@Override
public List<Cache> getAllCache() {
List<Cache> list = new ArrayList<>();
Map<Object, Element> map = userCache.getAll(userCache.getKeys());
for (Element e : map.values()) {
list.add((Cache) e.getObjectValue());
}
return list;
}
@SuppressWarnings("unchecked")
@Override
public V getValue(K key) {
Element element = cache.get(key);
if (element != null) {
return (V) element.getObjectValue();
}
return null;
}
@Override
public CachedPageLet get(PageLetConfig pageLetConfig) {
Element element = this.cchm.getCache("esi").get(pageLetConfig.getURI());
CachedPageLet cachedPageLet = null;
if (null != element) {
cachedPageLet = new CachedPageLet(pageLetConfig, (String) element.getObjectValue());
}
return cachedPageLet;
}
@Override
public Client get(String ref) {
// TODO Auto-generated method stub
Client client = null;
if (cache.isKeyInCache(ref)) {
Element elem = cache.get(ref);
client = (Client) elem.getObjectValue();
}
return client;
}
private Entity getFromCache(Integer id) {
if (id == null) {
return null;
}
Element element = entityDefinitionCache.get(id);
if (element == null) {
return null;
}
return (Entity) element.getObjectValue();
}
public Object get(Object key) {
if (key == null) {
return null;
}
Element elem = ehcache.get(key);
if (elem == null) {
return null;
}
return elem.getObjectValue();
}