StoreDirectory(Distributor distributor) throws IOException {
this.distributor = distributor;
synchronized (mutex) {
MapBuilder<String, StoreFileMetaData> builder = MapBuilder.newMapBuilder();
Map<String, String> checksums =
readChecksums(distributor.all(), new HashMap<String, String>());
for (Directory delegate : distributor.all()) {
for (String file : delegate.listAll()) {
String checksum = checksums.get(file);
builder.put(
file, new StoreFileMetaData(file, delegate.fileLength(file), checksum, delegate));
}
}
filesMetadata = builder.immutableMap();
files = filesMetadata.keySet().toArray(new String[filesMetadata.size()]);
}
}
@Override
public void close() throws IOException {
for (Directory delegate : distributor.all()) {
delegate.close();
}
synchronized (mutex) {
filesMetadata = ImmutableMap.of();
files = Strings.EMPTY_ARRAY;
}
}
/**
* Creates a new Directory from the given distributor. The default implementation returns a new
* {@link org.elasticsearch.index.store.DistributorDirectory} if there is more than one data path
* in the distributor.
*/
public Directory newFromDistributor(final Distributor distributor) throws IOException {
if (distributor.all().length == 1) {
// use filter dir for consistent toString methods
return new FilterDirectory(distributor.primary()) {
@Override
public String toString() {
return distributor.toString();
}
};
}
return new DistributorDirectory(distributor);
}
synchronized void closeInternal() throws IOException {
if (isOpen) {
isOpen = false;
for (Directory delegate : distributor.all()) {
delegate.close();
}
synchronized (mutex) {
filesMetadata = ImmutableOpenMap.of();
files = Strings.EMPTY_ARRAY;
}
}
}
public Directory[] delegates() {
return distributor.all();
}