@Override
public ListenableFuture<String> apply(Void ignored)
throws CacheException, InterruptedException, NoSuchAlgorithmException, IOException {
final PnfsId pnfsId = descriptor.getFileAttributes().getPnfsId();
LOGGER.debug("Checking if {} still exists.", pnfsId);
FsPath path;
try {
path = pnfs.getPathByPnfsId(pnfsId);
} catch (FileNotFoundCacheException e) {
// Remove file asynchronously to prevent request cancellation from
// interrupting the state update.
executor.execute(() -> removeFile(pnfsId));
throw new FileNotFoundCacheException(
"File not found in name space during pre-flush check.", e);
}
checksumModule.enforcePreFlushPolicy(descriptor);
return Futures.immediateFuture(path.toString());
}
/**
* Get the mover channel for a certain HTTP request. The mover channel is identified by UUID
* generated upon mover start and sent back to the door as a part of the address info.
*
* @param request HttpRequest that was sent by the client
* @param exclusive True if the mover channel exclusively is to be opened in exclusive mode. False
* if the mover channel can be shared with other requests.
* @return Mover channel for specified UUID
* @throws IllegalArgumentException Request did not include UUID or no mover channel found for
* UUID in the request
*/
private NettyTransferService<HttpProtocolInfo>.NettyMoverChannel open(
HttpRequest request, boolean exclusive) throws IllegalArgumentException, URISyntaxException {
QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.getUri());
Map<String, List<String>> params = queryStringDecoder.parameters();
if (!params.containsKey(HttpTransferService.UUID_QUERY_PARAM)) {
if (!request.getUri().equals("/favicon.ico")) {
_logger.error(
"Received request without UUID in the query " + "string. Request-URI was {}",
request.getUri());
}
throw new IllegalArgumentException("Query string does not include any UUID.");
}
List<String> uuidList = params.get(HttpTransferService.UUID_QUERY_PARAM);
if (uuidList.isEmpty()) {
throw new IllegalArgumentException("UUID parameter does not include any value.");
}
UUID uuid = UUID.fromString(uuidList.get(0));
NettyTransferService<HttpProtocolInfo>.NettyMoverChannel file =
_server.openFile(uuid, exclusive);
if (file == null) {
throw new IllegalArgumentException(
"Request is no longer valid. " + "Please resubmit to door.");
}
URI uri = new URI(request.getUri());
FsPath requestedFile = FsPath.create(uri.getPath());
FsPath transferFile = FsPath.create(file.getProtocolInfo().getPath());
if (!requestedFile.equals(transferFile)) {
_logger.warn(
"Received an illegal request for file {}, while serving {}", requestedFile, transferFile);
throw new IllegalArgumentException(
"The file you specified does " + "not match the UUID you specified!");
}
_files.add(file);
return file;
}
public FileAttributes getFileAttributes(String requestPath) throws CacheException {
PnfsHandler handler = ServletContextHandlerAttributes.getPnfsHandler(ctx);
FsPath path;
if (requestPath == null || requestPath.isEmpty()) {
path = FsPath.ROOT;
} else {
path = FsPath.create(FsPath.ROOT + requestPath);
}
Set<FileAttribute> attributes = EnumSet.allOf(FileAttribute.class);
FileAttributes namespaceAttrributes = handler.getFileAttributes(path, attributes);
return namespaceAttrributes;
}
@Override
public void list(
Subject subject,
String path,
Glob glob,
Range<Integer> range,
Set<FileAttribute> attrs,
ListHandler handler)
throws CacheException {
try (DirectoryStream stream =
_handler.list(subject, Restrictions.none(), FsPath.create(path), glob, range, attrs)) {
for (DirectoryEntry entry : stream) {
handler.addEntry(entry.getName(), entry.getFileAttributes());
}
} catch (InterruptedException e) {
throw new TimeoutCacheException(e.getMessage());
}
}
public HttpGetResponse(
long fileSize, NettyTransferService<HttpProtocolInfo>.NettyMoverChannel file) {
super(HTTP_1_1, OK);
HttpProtocolInfo protocolInfo = file.getProtocolInfo();
headers().add(ACCEPT_RANGES, BYTES);
headers().add(CONTENT_LENGTH, fileSize);
String digest = buildDigest(file);
if (!digest.isEmpty()) {
headers().add(DIGEST, digest);
}
headers()
.add(
"Content-Disposition",
contentDisposition(
protocolInfo.getDisposition(), FsPath.create(protocolInfo.getPath()).name()));
if (protocolInfo.getLocation() != null) {
headers().add(CONTENT_LOCATION, protocolInfo.getLocation());
}
}