/*
* @see org.alfresco.repo.content.ContentStore#delete(java.lang.String)
*/
@Override
public boolean delete(String contentUrl) {
ReentrantReadWriteLock readWriteLock = readWriteLock(contentUrl);
ReadLock readLock = readWriteLock.readLock();
readLock.lock();
try {
if (!cache.contains(contentUrl)) {
// The item isn't in the cache, so simply delete from the backing store
return backingStore.delete(contentUrl);
}
} finally {
readLock.unlock();
}
WriteLock writeLock = readWriteLock.writeLock();
writeLock.lock();
try {
// Double check the content still exists in the cache
if (cache.contains(contentUrl)) {
// The item is in the cache, so remove.
cache.remove(contentUrl);
}
// Whether the item was in the cache or not, it must still be deleted from the backing store.
return backingStore.delete(contentUrl);
} finally {
writeLock.unlock();
}
}
/**
* maintains a list of last <i>committedLog</i> or so committed requests. This is used for fast
* follower synchronization.
*
* @param request committed request
*/
public void addCommittedProposal(Request request) {
WriteLock wl = logLock.writeLock();
try {
wl.lock();
if (committedLog.size() > commitLogCount) {
committedLog.removeFirst();
minCommittedLog = committedLog.getFirst().packet.getZxid();
}
if (committedLog.isEmpty()) {
minCommittedLog = request.zxid;
maxCommittedLog = request.zxid;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BinaryOutputArchive boa = BinaryOutputArchive.getArchive(baos);
try {
request.getHdr().serialize(boa, "hdr");
if (request.getTxn() != null) {
request.getTxn().serialize(boa, "txn");
}
baos.close();
} catch (IOException e) {
LOG.error("This really should be impossible", e);
}
QuorumPacket pp = new QuorumPacket(Leader.PROPOSAL, request.zxid, baos.toByteArray(), null);
Proposal p = new Proposal();
p.packet = pp;
p.request = request;
committedLog.add(p);
maxCommittedLog = p.packet.getZxid();
} finally {
wl.unlock();
}
}
/**
* Mark the container as active
*
* @param containerId the ContainerId
* @param pidFilePath Path where the executor should write the pid of the launched process
*/
public void activateContainer(ContainerId containerId, Path pidFilePath) {
try {
writeLock.lock();
this.pidFiles.put(containerId, pidFilePath);
} finally {
writeLock.unlock();
}
}
/**
* Mark the container as inactive. Done iff the container is still active. Else treat it as a
* no-op
*/
public void deactivateContainer(ContainerId containerId) {
try {
writeLock.lock();
this.pidFiles.remove(containerId);
} finally {
writeLock.unlock();
}
}
public void incrementChangeNumber() {
writeTreeLock.lock();
try {
changeNumber++;
} finally {
writeTreeLock.unlock();
}
}
/** {@inheritDoc} */
public boolean remove(Object o) {
writeLock.lock();
try {
return super.remove(o);
} finally {
writeLock.unlock();
}
}
public final <R> R writeE(final Callable<R> writeOp) throws Exception {
writeLock.lock();
try {
return writeOp.call();
} finally {
writeLock.unlock();
}
}
/** For Hibernate use */
private void setParent(Node parentNode) {
refWriteLock.lock();
try {
this.parent = parentNode;
this.childAssocRef = null;
} finally {
refWriteLock.unlock();
}
}
public void setTypeQName(QNameDAO qnameDAO, QName typeQName) {
Long typeQNameId = qnameDAO.getOrCreateQName(typeQName).getFirst();
refWriteLock.lock();
try {
setTypeQNameId(typeQNameId);
} finally {
refWriteLock.unlock();
}
}
public void setIndex(int index) {
refWriteLock.lock();
try {
this.index = index;
this.childAssocRef = null;
} finally {
refWriteLock.unlock();
}
}
private void setValue(Object value) {
// get a write lock
singletonWriteLock.lock();
try {
tenantSingletonValue.put(TenantUtil.getCurrentDomain(), value);
} finally {
singletonWriteLock.unlock();
}
}
/** For Hibernate use */
private void setChild(Node node) {
refWriteLock.lock();
try {
child = node;
this.childAssocRef = null;
} finally {
refWriteLock.unlock();
}
}
public void setIsPrimary(boolean isPrimary) {
refWriteLock.lock();
try {
this.isPrimary = isPrimary;
this.childAssocRef = null;
} finally {
refWriteLock.unlock();
}
}
public void setTypeQNameId(Long typeQNameId) {
refWriteLock.lock();
try {
this.typeQNameId = typeQNameId;
this.childAssocRef = null;
this.typeQName = null;
} finally {
refWriteLock.unlock();
}
}
public void setQnameNamespaceId(Long qnameNamespaceId) {
refWriteLock.lock();
try {
this.qnameNamespaceId = qnameNamespaceId;
this.childAssocRef = null;
this.qname = null;
} finally {
refWriteLock.unlock();
}
}
public void setQnameLocalName(String qnameLocalName) {
refWriteLock.lock();
try {
this.qnameLocalName = qnameLocalName;
this.childAssocRef = null;
this.qname = null;
} finally {
refWriteLock.unlock();
}
}
public final <R> R write(final Callable<R> writeOp) {
writeLock.lock();
try {
return writeOp.call();
} catch (Exception e) {
// can't be ignore
return (R) e;
} finally {
writeLock.unlock();
}
}
/** {@inheritDoc} */
public boolean removeAll(Collection<?> c) {
if (CollectionUtils.isEmpty(c)) {
return false;
}
writeLock.lock();
try {
return super.removeAll(c);
} finally {
writeLock.unlock();
}
}
/** Adds all elements in this Collection. */
public boolean addAll(Collection<? extends E> c) {
Assert.notNull(c, "Can not merge with NULL set");
writeLock.lock();
try {
for (E object : c) {
this.add(object);
}
return true;
} finally {
writeLock.unlock();
}
}
public int prepareGame(ClientInfo clientInfo) {
System.out.println("prepareGame: " + clientInfo);
int id = currentID.incrementAndGet();
clientInfo.resetPing();
writeLock.lock();
clients.put(id, clientInfo);
notifyMatcher();
writeLock.unlock();
return id;
}
@Override
public void cleanIndexedFiles() {
writeLock.lock();
try {
sentFiles.clear();
syncedFilesPerPath.clear();
} finally {
writeLock.unlock();
}
synchronized (toRefresh) {
toRefresh.clear();
}
}
/**
* Every time an Ordered element is added via this method this Set will be re-sorted, otherwise
* the element is simply added to the end. Added element must not be null.
*/
public boolean add(E o) {
Assert.notNull(o, "Can not add NULL object");
writeLock.lock();
try {
boolean present = false;
if (o instanceof Ordered) {
present = this.addOrderedElement((Ordered) o);
} else {
present = super.add(o);
}
return present;
} finally {
writeLock.unlock();
}
}
public void setQName(QNameDAO qnameDAO, QName qname) {
String assocQNameNamespace = qname.getNamespaceURI();
String assocQNameLocalName = qname.getLocalName();
Long assocQNameNamespaceId = qnameDAO.getOrCreateNamespace(assocQNameNamespace).getFirst();
Long assocQNameCrc = getCrc(qname);
// get write lock
refWriteLock.lock();
try {
setQnameNamespaceId(assocQNameNamespaceId);
setQnameLocalName(assocQNameLocalName);
setQnameCrc(assocQNameCrc);
} finally {
refWriteLock.unlock();
}
}
/** {@inheritDoc} */
public QName getTypeQName(QNameDAO qnameDAO) {
refReadLock.lock();
try {
if (typeQName != null) {
return typeQName;
}
} finally {
refReadLock.unlock();
}
refWriteLock.lock();
try {
typeQName = qnameDAO.getQName(typeQNameId).getSecond();
return typeQName;
} finally {
refWriteLock.unlock();
}
}
/**
* clear the zkdatabase. Note to developers - be careful to see that the clear method does clear
* out all the data structures in zkdatabase.
*/
public void clear() {
minCommittedLog = 0;
maxCommittedLog = 0;
/* to be safe we just create a new
* datatree.
*/
dataTree = new DataTree();
sessionsWithTimeouts.clear();
WriteLock lock = logLock.writeLock();
try {
lock.lock();
committedLog.clear();
} finally {
lock.unlock();
}
initialized = false;
}
@Override
public void synchronizeFile(ITernFile file) throws IOException {
writeLock.lock();
try {
TernFile tf = file.toTernServerFile(getProject());
String oldText = sentFiles.get(tf.getName());
if (tf.getText().equals(oldText) && !uploader.cancel(tf.getName())) {
// no need to synchronize the file, already up-to-date
return;
}
TernDoc doc = new TernDoc();
doc.addFile(tf);
sendFiles(doc);
} finally {
writeLock.unlock();
}
}
@Override
public void synchronizeScriptPath(ITernScriptPath path, String... forced) {
TernDoc doc = new TernDoc();
writeLock.lock();
try {
// make sure we do not send duplicate files
Set<String> requestedFiles = new HashSet<String>(sentFiles.keySet());
Set<String> perPath = new HashSet<String>();
syncedFilesPerPath.put(path, perPath);
requestedFiles.removeAll(Arrays.asList(forced));
long totalSize = 0;
for (String file : requestedFiles) {
totalSize += sentFiles.get(file).length();
}
for (ITernScriptResource resource : path.getScriptResources()) {
// limit the number of files being sent to the Tern server
if (totalSize >= MAX_ALLOWED_SIZE) {
sizeExceeded();
break;
}
ITernFile file = resource.getFile();
if (file == null) {
continue;
}
String name = file.getFullName(getProject());
perPath.add(name);
if (!requestedFiles.contains(name)) {
try {
TernFile tf = file.toTernServerFile(getProject());
doc.addFile(tf);
totalSize += tf.getText().length();
requestedFiles.add(name);
} catch (IOException e) {
getProject().handleException(e);
}
}
}
// perform actual synchronization with the server
sendFiles(doc);
} finally {
writeLock.unlock();
}
}
private ContentReader cacheAndRead(String url) {
WriteLock writeLock = readWriteLock(url).writeLock();
writeLock.lock();
try {
for (int i = 0; i < maxCacheTries; i++) {
ContentReader reader = attemptCacheAndRead(url);
if (reader != null) {
return reader;
}
}
// Have tried multiple times to cache the item and read it back from the cache
// but there is a recurring problem - give up and return the item from the backing store.
return backingStore.getReader(url);
} finally {
writeLock.unlock();
}
}
@Override
public void run() {
System.out.println("GameMatcher Started");
while (true) {
System.out.println(
"Running match cycle: currentID=" + currentID + " numClients=" + clients.size());
writeLock.lock();
removeStaleClients();
matchClients();
synchronized (clients) {
running = false;
writeLock.unlock();
try {
clients.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
/**
* {@inheritDoc}
*
* <p>This method is thread-safe and lazily creates the required references, if required.
*/
public ChildAssociationRef getChildAssocRef(QNameDAO qnameDAO) {
boolean trashReference = false;
// first check if it is available
refReadLock.lock();
try {
if (childAssocRef != null) {
// double check that the parent and child node references match those of our reference
if (childAssocRef.getParentRef() != parent.getNodeRef()
|| childAssocRef.getChildRef() != child.getNodeRef()) {
trashReference = true;
} else {
// we are sure that the reference is correct
return childAssocRef;
}
}
} finally {
refReadLock.unlock();
}
// get write lock
refWriteLock.lock();
try {
// double check
if (childAssocRef == null || trashReference) {
if (typeQName == null) {
typeQName = qnameDAO.getQName(this.typeQNameId).getSecond();
}
if (qname == null) {
String qnameNamespace = qnameDAO.getNamespace(qnameNamespaceId).getSecond();
qname = QName.createQName(qnameNamespace, qnameLocalName);
}
childAssocRef =
new ChildAssociationRef(
typeQName, parent.getNodeRef(), qname, child.getNodeRef(), this.isPrimary, index);
}
return childAssocRef;
} finally {
refWriteLock.unlock();
}
}