private void applyChildrenChangeEvents(VirtualFile parent, List<VFileEvent> events) {
final NewVirtualFileSystem delegate = getDelegate(parent);
TIntArrayList childrenIdsUpdated = new TIntArrayList();
List<VirtualFile> childrenToBeUpdated = new SmartList<VirtualFile>();
assert parent != null && parent != mySuperRoot;
final int parentId = getFileId(parent);
assert parentId != 0;
TIntHashSet parentChildrenIds = new TIntHashSet(FSRecords.list(parentId));
boolean hasRemovedChildren = false;
for (VFileEvent event : events) {
if (event instanceof VFileCreateEvent) {
String name = ((VFileCreateEvent) event).getChildName();
final VirtualFile fake = new FakeVirtualFile(parent, name);
final FileAttributes attributes = delegate.getAttributes(fake);
if (attributes != null) {
final int childId = createAndFillRecord(delegate, fake, parentId, attributes);
assert parent instanceof VirtualDirectoryImpl : parent;
final VirtualDirectoryImpl dir = (VirtualDirectoryImpl) parent;
VirtualFileSystemEntry child = dir.createChild(name, childId, dir.getFileSystem());
childrenToBeUpdated.add(child);
childrenIdsUpdated.add(childId);
parentChildrenIds.add(childId);
}
} else if (event instanceof VFileDeleteEvent) {
VirtualFile file = ((VFileDeleteEvent) event).getFile();
if (!file.exists()) {
LOG.error("Deleting a file, which does not exist: " + file.getPath());
continue;
}
hasRemovedChildren = true;
int id = getFileId(file);
childrenToBeUpdated.add(file);
childrenIdsUpdated.add(-id);
parentChildrenIds.remove(id);
}
}
FSRecords.updateList(parentId, parentChildrenIds.toArray());
if (hasRemovedChildren) clearIdCache();
VirtualDirectoryImpl parentImpl = (VirtualDirectoryImpl) parent;
for (int i = 0, len = childrenIdsUpdated.size(); i < len; ++i) {
final int childId = childrenIdsUpdated.get(i);
final VirtualFile childFile = childrenToBeUpdated.get(i);
if (childId > 0) {
parentImpl.addChild((VirtualFileSystemEntry) childFile);
} else {
FSRecords.deleteRecordRecursively(-childId);
parentImpl.removeChild(childFile);
invalidateSubtree(childFile);
}
}
}
@NotNull
private static VirtualFilePointer[] toPointers(@NotNull List<FilePointerPartNode> pointers) {
if (pointers.isEmpty()) return VirtualFilePointer.EMPTY_ARRAY;
List<VirtualFilePointer> list =
ContainerUtil.mapNotNull(
pointers,
new Function<FilePointerPartNode, VirtualFilePointer>() {
@Override
public VirtualFilePointer fun(FilePointerPartNode pair) {
return pair.leaf;
}
});
return list.toArray(new VirtualFilePointer[list.size()]);
}
@RequiredWriteAction
@Override
public void processEvents(@NotNull List<VFileEvent> events) {
ApplicationManager.getApplication().assertWriteAccessAllowed();
List<VFileEvent> validated = validateEvents(events);
BulkFileListener publisher = myEventBus.syncPublisher(VirtualFileManager.VFS_CHANGES);
publisher.before(validated);
THashMap<VirtualFile, List<VFileEvent>> parentToChildrenEventsChanges = null;
for (VFileEvent event : validated) {
VirtualFile changedParent = null;
if (event instanceof VFileCreateEvent) {
changedParent = ((VFileCreateEvent) event).getParent();
((VFileCreateEvent) event).resetCache();
} else if (event instanceof VFileDeleteEvent) {
changedParent = ((VFileDeleteEvent) event).getFile().getParent();
}
if (changedParent != null) {
if (parentToChildrenEventsChanges == null)
parentToChildrenEventsChanges = new THashMap<VirtualFile, List<VFileEvent>>();
List<VFileEvent> parentChildrenChanges = parentToChildrenEventsChanges.get(changedParent);
if (parentChildrenChanges == null) {
parentToChildrenEventsChanges.put(
changedParent, parentChildrenChanges = new SmartList<VFileEvent>());
}
parentChildrenChanges.add(event);
} else {
applyEvent(event);
}
}
if (parentToChildrenEventsChanges != null) {
parentToChildrenEventsChanges.forEachEntry(
new TObjectObjectProcedure<VirtualFile, List<VFileEvent>>() {
@Override
public boolean execute(VirtualFile parent, List<VFileEvent> childrenEvents) {
applyChildrenChangeEvents(parent, childrenEvents);
return true;
}
});
parentToChildrenEventsChanges.clear();
}
publisher.after(validated);
}
private List<VFileEvent> getEvents(String msg, @Nullable Runnable action) {
LOG.debug("** waiting for " + msg);
myAccept = true;
if (action != null) {
action.run();
}
int timeout = myTimeout;
try {
synchronized (myWaiter) {
//noinspection WaitNotInLoop
myWaiter.wait(timeout);
}
} catch (InterruptedException e) {
LOG.warn(e);
}
LOG.debug("** waited for " + timeout);
myFileSystem.refresh(false);
ArrayList<VFileEvent> result;
synchronized (myEvents) {
result = new ArrayList<VFileEvent>(myEvents);
myEvents.clear();
}
LOG.debug("** events: " + result.size());
return result;
}
private void scheduleWritableAttributeChange(
final VirtualFileSystemEntry file,
final boolean currentWritable,
final boolean uptodateWritable) {
myEvents.add(
new VFilePropertyChangeEvent(
null, file, VirtualFile.PROP_WRITABLE, currentWritable, uptodateWritable, true));
}
@Override
@NotNull
public VirtualFile[] getLocalRoots() {
List<VirtualFile> roots = ContainerUtil.newSmartList();
myRootsLock.readLock().lock();
try {
for (NewVirtualFile root : myRoots.values()) {
if (root.isInLocalFileSystem() && !(root.getFileSystem() instanceof TempFileSystem)) {
roots.add(root);
}
}
} finally {
myRootsLock.readLock().unlock();
}
return VfsUtilCore.toVirtualFileArray(roots);
}
@Override
@NotNull
public VirtualFile[] getRoots(@NotNull final NewVirtualFileSystem fs) {
final List<VirtualFile> roots = new ArrayList<VirtualFile>();
myRootsLock.readLock().lock();
try {
for (NewVirtualFile root : myRoots.values()) {
if (root.getFileSystem() == fs) {
roots.add(root);
}
}
} finally {
myRootsLock.readLock().unlock();
}
return VfsUtilCore.toVirtualFileArray(roots);
}
private void assertEvent(Class<? extends VFileEvent> type, String... paths) {
List<VFileEvent> events = getEvents(type.getSimpleName(), null);
assertEquals(events.toString(), paths.length, events.size());
Set<String> pathSet =
ContainerUtil.map2Set(
paths,
new Function<String, String>() {
@Override
public String fun(final String path) {
return FileUtil.toSystemIndependentName(path);
}
});
for (VFileEvent event : events) {
assertTrue(event.toString(), type.isInstance(event));
VirtualFile eventFile = event.getFile();
assertNotNull(event.toString(), eventFile);
assertTrue(
eventFile + " not in " + Arrays.toString(paths), pathSet.remove(eventFile.getPath()));
}
}
@NotNull
private FSRecords.NameId[] persistAllChildren(
@NotNull final VirtualFile file, final int id, @NotNull FSRecords.NameId[] current) {
assert file != mySuperRoot;
final NewVirtualFileSystem fs = replaceWithNativeFS(getDelegate(file));
String[] delegateNames = VfsUtil.filterNames(fs.list(file));
if (delegateNames.length == 0 && current.length > 0) {
return current;
}
Set<String> toAdd = ContainerUtil.newHashSet(delegateNames);
for (FSRecords.NameId nameId : current) {
toAdd.remove(nameId.name);
}
final TIntArrayList childrenIds = new TIntArrayList(current.length + toAdd.size());
final List<FSRecords.NameId> nameIds =
ContainerUtil.newArrayListWithExpectedSize(current.length + toAdd.size());
for (FSRecords.NameId nameId : current) {
childrenIds.add(nameId.id);
nameIds.add(nameId);
}
for (String newName : toAdd) {
FakeVirtualFile child = new FakeVirtualFile(file, newName);
FileAttributes attributes = fs.getAttributes(child);
if (attributes != null) {
int childId = createAndFillRecord(fs, child, id, attributes);
childrenIds.add(childId);
nameIds.add(new FSRecords.NameId(childId, FileNameCache.storeName(newName), newName));
}
}
FSRecords.updateList(id, childrenIds.toNativeArray());
setChildrenCached(id);
return nameIds.toArray(new FSRecords.NameId[nameIds.size()]);
}
@Override
public void after(@NotNull final List<? extends VFileEvent> events) {
cleanContainerCaches();
if (myUrlsToUpdate == null) {
return;
}
for (String url : myUrlsToUpdate) {
synchronized (VirtualFilePointerManagerImpl.this) {
for (TreeMap<String, VirtualFilePointerImpl> urlToPointer : myUrlToPointerMaps.values()) {
VirtualFilePointerImpl pointer = urlToPointer.remove(url);
if (pointer != null) {
String path = VfsUtil.urlToPath(pointer.getUrl());
urlToPointer.put(path, pointer);
}
}
}
}
for (VirtualFilePointer pointer : myPointersToUpdate) {
((VirtualFilePointerImpl) pointer).update();
}
for (EventDescriptor event : myEvents) {
event.fireAfter();
}
if (!myPointersToUpdate.isEmpty()) {
VirtualFilePointer[] arr =
myPointersToUpdate.toArray(new VirtualFilePointer[myPointersToUpdate.size()]);
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).validityChanged(arr);
}
myUrlsToUpdate = null;
myEvents = null;
myPointersToUpdate = null;
}
private void addPointersUnder(
String path, boolean allowSameFSOptimization, List<VirtualFilePointer> pointers) {
final boolean urlFromJarFS =
allowSameFSOptimization && path.indexOf(JarFileSystem.JAR_SEPARATOR) > 0;
for (TreeMap<String, VirtualFilePointerImpl> urlToPointer : myUrlToPointerMaps.values()) {
for (String pointerUrl : urlToPointer.keySet()) {
final boolean pointerFromJarFS =
allowSameFSOptimization && pointerUrl.indexOf(JarFileSystem.JAR_SEPARATOR) > 0;
if (urlFromJarFS != pointerFromJarFS) {
continue; // optimization: consider pointers from the same FS as the url specified
}
if (startsWith(path, pointerUrl)) {
VirtualFilePointer pointer = urlToPointer.get(pointerUrl);
if (pointer != null) {
pointers.add(pointer);
}
}
}
}
}
@NotNull
private static List<VFileEvent> validateEvents(@NotNull List<VFileEvent> events) {
final List<EventWrapper> deletionEvents = ContainerUtil.newArrayList();
for (int i = 0, size = events.size(); i < size; i++) {
final VFileEvent event = events.get(i);
if (event instanceof VFileDeleteEvent && event.isValid()) {
deletionEvents.add(new EventWrapper((VFileDeleteEvent) event, i));
}
}
final TIntHashSet invalidIDs;
if (deletionEvents.isEmpty()) {
invalidIDs = EmptyIntHashSet.INSTANCE;
} else {
ContainerUtil.quickSort(deletionEvents, DEPTH_COMPARATOR);
invalidIDs = new TIntHashSet(deletionEvents.size());
final Set<VirtualFile> dirsToBeDeleted = new THashSet<VirtualFile>(deletionEvents.size());
nextEvent:
for (EventWrapper wrapper : deletionEvents) {
final VirtualFile candidate = wrapper.event.getFile();
VirtualFile parent = candidate;
while (parent != null) {
if (dirsToBeDeleted.contains(parent)) {
invalidIDs.add(wrapper.id);
continue nextEvent;
}
parent = parent.getParent();
}
if (candidate.isDirectory()) {
dirsToBeDeleted.add(candidate);
}
}
}
final List<VFileEvent> filtered = new ArrayList<VFileEvent>(events.size() - invalidIDs.size());
for (int i = 0, size = events.size(); i < size; i++) {
final VFileEvent event = events.get(i);
if (event.isValid() && !(event instanceof VFileDeleteEvent && invalidIDs.contains(i))) {
filtered.add(event);
}
}
return filtered;
}
@Override
public void before(@NotNull final List<? extends VFileEvent> events) {
cleanContainerCaches();
List<VirtualFilePointer> toFireEvents = new ArrayList<VirtualFilePointer>();
List<String> toUpdateUrl = new ArrayList<String>();
synchronized (VirtualFilePointerManagerImpl.this) {
for (VFileEvent event : events) {
if (event instanceof VFileDeleteEvent) {
final VFileDeleteEvent deleteEvent = (VFileDeleteEvent) event;
String url = deleteEvent.getFile().getPath();
addPointersUnder(url, true, toFireEvents);
} else if (event instanceof VFileCreateEvent) {
final VFileCreateEvent createEvent = (VFileCreateEvent) event;
String url = createEvent.getPath();
addPointersUnder(url, false, toFireEvents);
} else if (event instanceof VFileCopyEvent) {
final VFileCopyEvent copyEvent = (VFileCopyEvent) event;
String url = copyEvent.getNewParent().getPath() + "/" + copyEvent.getFile().getName();
addPointersUnder(url, false, toFireEvents);
} else if (event instanceof VFileMoveEvent) {
final VFileMoveEvent moveEvent = (VFileMoveEvent) event;
List<VirtualFilePointer> pointers = new ArrayList<VirtualFilePointer>();
addPointersUnder(moveEvent.getFile().getPath(), false, pointers);
for (VirtualFilePointer pointer : pointers) {
VirtualFile file = pointer.getFile();
if (file != null) {
toUpdateUrl.add(file.getPath());
}
}
} else if (event instanceof VFilePropertyChangeEvent) {
final VFilePropertyChangeEvent change = (VFilePropertyChangeEvent) event;
if (VirtualFile.PROP_NAME.equals(change.getPropertyName())) {
List<VirtualFilePointer> pointers = new ArrayList<VirtualFilePointer>();
addPointersUnder(change.getFile().getPath(), false, pointers);
for (VirtualFilePointer pointer : pointers) {
VirtualFile file = pointer.getFile();
if (file != null) {
toUpdateUrl.add(file.getPath());
}
}
}
}
}
myEvents = new ArrayList<EventDescriptor>();
for (VirtualFilePointerListener listener : myUrlToPointerMaps.keySet()) {
if (listener == null) continue;
EventDescriptor event = new EventDescriptor(listener, toFireEvents);
myEvents.add(event);
}
}
for (EventDescriptor event : myEvents) {
event.fireBefore();
}
if (!toFireEvents.isEmpty()) {
VirtualFilePointer[] arr =
toFireEvents.toArray(new VirtualFilePointer[toFireEvents.size()]);
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).beforeValidityChanged(arr);
}
myPointersToUpdate = toFireEvents;
myUrlsToUpdate = toUpdateUrl;
}
@Override
public void before(@NotNull final List<? extends VFileEvent> events) {
List<FilePointerPartNode> toFireEvents = new ArrayList<FilePointerPartNode>();
List<FilePointerPartNode> toUpdateUrl = new ArrayList<FilePointerPartNode>();
VirtualFilePointer[] toFirePointers;
synchronized (this) {
incModificationCount();
for (VFileEvent event : events) {
if (event instanceof VFileDeleteEvent) {
final VFileDeleteEvent deleteEvent = (VFileDeleteEvent) event;
addPointersUnder(deleteEvent.getFile(), false, "", toFireEvents);
} else if (event instanceof VFileCreateEvent) {
final VFileCreateEvent createEvent = (VFileCreateEvent) event;
addPointersUnder(createEvent.getParent(), true, createEvent.getChildName(), toFireEvents);
} else if (event instanceof VFileCopyEvent) {
final VFileCopyEvent copyEvent = (VFileCopyEvent) event;
addPointersUnder(
copyEvent.getNewParent(), true, copyEvent.getFile().getName(), toFireEvents);
} else if (event instanceof VFileMoveEvent) {
final VFileMoveEvent moveEvent = (VFileMoveEvent) event;
VirtualFile eventFile = moveEvent.getFile();
addPointersUnder(moveEvent.getNewParent(), true, eventFile.getName(), toFireEvents);
List<FilePointerPartNode> nodes = new ArrayList<FilePointerPartNode>();
addPointersUnder(eventFile, false, "", nodes);
for (FilePointerPartNode pair : nodes) {
VirtualFile file = pair.leaf.getFile();
if (file != null) {
toUpdateUrl.add(pair);
}
}
} else if (event instanceof VFilePropertyChangeEvent) {
final VFilePropertyChangeEvent change = (VFilePropertyChangeEvent) event;
if (VirtualFile.PROP_NAME.equals(change.getPropertyName())) {
VirtualFile eventFile = change.getFile();
VirtualFile parent = eventFile.getParent(); // e.g. for LightVirtualFiles
addPointersUnder(parent, true, change.getNewValue().toString(), toFireEvents);
List<FilePointerPartNode> nodes = new ArrayList<FilePointerPartNode>();
addPointersUnder(eventFile, false, "", nodes);
for (FilePointerPartNode pair : nodes) {
VirtualFile file = pair.leaf.getFile();
if (file != null) {
toUpdateUrl.add(pair);
}
}
}
}
}
myEvents = new ArrayList<EventDescriptor>();
toFirePointers = toPointers(toFireEvents);
for (final VirtualFilePointerListener listener : myPointers.keySet()) {
if (listener == null) continue;
List<VirtualFilePointer> filtered =
ContainerUtil.filter(
toFirePointers,
new Condition<VirtualFilePointer>() {
@Override
public boolean value(VirtualFilePointer pointer) {
return ((VirtualFilePointerImpl) pointer).getListener() == listener;
}
});
if (!filtered.isEmpty()) {
EventDescriptor event =
new EventDescriptor(
listener, filtered.toArray(new VirtualFilePointer[filtered.size()]));
myEvents.add(event);
}
}
}
for (EventDescriptor descriptor : myEvents) {
descriptor.fireBefore();
}
if (!toFireEvents.isEmpty()) {
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).beforeValidityChanged(toFirePointers);
}
myPointersToFire = toFireEvents;
myPointersToUpdateUrl = toUpdateUrl;
}
private void scheduleUpdateContent(final VirtualFileSystemEntry file) {
myEvents.add(new VFileContentChangeEvent(null, file, file.getModificationStamp(), -1, true));
}
private void scheduleCreation(
final VirtualFileSystemEntry parent, final String childName, final boolean isDirectory) {
myEvents.add(new VFileCreateEvent(null, parent, childName, isDirectory, true));
}
private void scheduleDeletion(final VirtualFile file) {
if (file == null) return;
myEvents.add(new VFileDeleteEvent(null, file, true));
}