/**
* This method should not be called by clients. Use {@link IndexRegistry#getSearcher()} instead.
*
* @param corruptedIndexes A list that will be filled by this constructor with indexes that
* couldn't be loaded.
*/
@VisibleForPackageGroup
public Searcher(
@NotNull IndexRegistry indexRegistry,
@NotNull FileFactory fileFactory,
@NotNull OutlookMailFactory outlookMailFactory,
@NotNull final List<CorruptedIndex> corruptedIndexes)
throws IOException {
Util.checkNotNull(indexRegistry, fileFactory, outlookMailFactory);
this.indexRegistry = indexRegistry;
this.fileFactory = fileFactory;
this.outlookMailFactory = outlookMailFactory;
readLock = indexRegistry.getReadLock();
writeLock = indexRegistry.getWriteLock();
// Handler for index additions
addedListener =
new Event.Listener<LuceneIndex>() {
public void update(LuceneIndex eventData) {
replaceLuceneSearcher();
}
};
/*
* This lock could be moved into the indexes handler, but we'll put it
* here to avoid releasing and reacquiring it.
*/
writeLock.lock();
try {
indexRegistry.addListeners(
new ExistingIndexesHandler() {
// Handle existing indexes
public void handleExistingIndexes(List<LuceneIndex> indexes) {
try {
corruptedIndexes.addAll(setLuceneSearcher(indexes));
} catch (IOException e) {
ioException = e;
}
}
},
addedListener,
null); // removedListener is null, see deletion thread below
} finally {
writeLock.unlock();
}
if (ioException != null) throw ioException;
// Handler for index removals
deletionThread =
new Thread(Searcher.class.getName() + " (Approve pending deletions)") {
public void run() {
while (true) {
try {
List<PendingDeletion> deletions = deletionQueue.take();
replaceLuceneSearcher();
for (PendingDeletion deletion : deletions) deletion.setApprovedBySearcher();
} catch (InterruptedException e) {
break;
}
}
}
};
deletionThread.start();
}
