Examples with FileEntry dev.hawala.xns.level4.filing.fs.FileEntry used on opensource projects

Example 1 with FileEntry

use of dev.hawala.xns.level4.filing.fs.FileEntry in project dodo by devhawala.

the class FilingImpl method copy.

/*
	 * Copy: PROCEDURE [ file, destinationDirectory: Handle ,
	 *                   attributes: AttributeSequence, controls: ControlSequence,
	 *                   session: Session ]
	 *   RETURNS [ newFile: Handle ]
	 *   REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
	 *             AuthenticationError, ControlTypeError, ControlValueError,
	 *             HandleError, InsertionError, SessionError, SpaceError,
	 *             UndefinedError ]
	 *   = 10;
	 */
private static void copy(CopyParams params, CopyResults results) {
    logParams("copy", params);
    // check session
    Session session = resolveSession(params.session);
    Volume vol = session.getService().getVolume();
    // check specified file handle
    Handle fileHandle = Handle.get(params.handle);
    if (fileHandle.isVolumeRoot()) {
        // the file system root cannot be copied
        new AccessErrorRecord(AccessProblem.accessRightsInsufficient).raise();
    }
    if (fileHandle.isNullHandle()) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    FileEntry fe = fileHandle.getFe();
    if (fe.getParentID() == FsConstants.rootFileID) {
        // file system root folders cannot be copied
        new AccessErrorRecord(AccessProblem.accessRightsInsufficient).raise();
    }
    // check the destination
    Handle destinationDirHandle = Handle.get(params.destinationDirectory);
    if (destinationDirHandle.isVolumeRoot()) {
        // the file system root cannot be target
        new AccessErrorRecord(AccessProblem.accessRightsInsufficient).raise();
    }
    if (destinationDirHandle.isNullHandle()) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    FileEntry destinationDirectory = destinationDirHandle.getFe();
    // copy the file and return new file
    List<iValueSetter> attrSetters = getCourier2FileAttributeSetters(params.attributes);
    try (Volume.Session modSession = vol.startModificationSession()) {
        // do the copy
        FileEntry newFe = modSession.copy(fe, destinationDirectory, attrSetters, session.getUsername());
        // prepare results
        Handle newFeHandle = new Handle(session, newFe);
        newFeHandle.setIdTo(results.newHandle);
        logResult("copy", results);
    } catch (InterruptedException e) {
        new UndefinedErrorRecord(FilingCommon.UNDEFINEDERROR_CANNOT_MODIFY_VOLUME).raise();
    } catch (Exception e) {
        new SpaceErrorRecord(SpaceProblem.mediumFull).raise();
    }
    // prolongate the sessions life if this took longer
    session.continueUse();
}

Example 2 with FileEntry

use of dev.hawala.xns.level4.filing.fs.FileEntry in project dodo by devhawala.

the class FilingImpl method changeAttributes.

/*
	 * ChangeAttributes: PROCEDURE [ file: Handle, attributes: AttributeSequence,
	 *                               session: Session ]
	 *   REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
	 *             AuthenticationError, HandleError, InsertionError,
	 *             SessionError, SpaceError, UndefinedError ]
	 *   = 9;
	 */
private static void changeAttributes(ChangeAttributesParams params, RECORD results) {
    logParams("changeAttributes", params);
    // check session
    Session session = resolveSession(params.session);
    Volume vol = session.getService().getVolume();
    // check specified file handle
    Handle fileHandle = Handle.get(params.handle);
    if (fileHandle == null || fileHandle.isNullHandle()) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    if (fileHandle.isVolumeRoot()) {
        // the file system root cannot be modified
        new AccessErrorRecord(AccessProblem.accessRightsInsufficient).raise();
    }
    FileEntry fe = fileHandle.getFe();
    if (fe == null) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    // change attributes
    List<iValueSetter> attrSetters = getCourier2FileAttributeSetters(params.attributes);
    try (Volume.Session modSession = vol.startModificationSession()) {
        modSession.updateFileAttributes(fe, attrSetters, session.getUsername());
    } catch (InterruptedException e) {
        new UndefinedErrorRecord(FilingCommon.UNDEFINEDERROR_CANNOT_MODIFY_VOLUME).raise();
    } catch (EndOfMessageException e) {
        new ConnectionErrorRecord(ConnectionProblem.otherCallProblem).raise();
    } catch (CourierException ce) {
        // this is a RuntimeException, why is it catch-ed by Exception ???????
        throw ce;
    } catch (Exception e1) {
        new SpaceErrorRecord(SpaceProblem.mediumFull).raise();
    }
}

Example 3 with FileEntry

use of dev.hawala.xns.level4.filing.fs.FileEntry in project dodo by devhawala.

the class FilingImpl method list.

/*
	 * List: PROCEDURE [ directory: Handle, types: AttributeTypeSequence,
	 *                   scope: ScopeSequence, listing: BulkData.Sink,
	 *                   session: Session ]
	 *   REPORTS [ AccessError, AttributeTypeError,
	 *             AuthenticationError, ConnectionError,
	 *             HandleError,
	 *             ScopeTypeError, ScopeValueError,
	 *             SessionError, TransferError, UndefinedError ]
	 *   = 18;
	 */
private static void list(ListParams params, RECORD results) {
    logParams("list", params);
    // check session
    Session session = resolveSession(params.session);
    // check specified file handle
    Handle dirHandle = Handle.get(params.directory);
    long dirFileID = (dirHandle == null || dirHandle.isNullHandle() || dirHandle.isVolumeRoot()) ? 0 : dirHandle.getFe().getFileID();
    // do the enumeration
    final List<FileEntry> hits = getFileHits(session, dirFileID, new ScopeData(params.scope));
    // prepare the attribute getters
    List<iValueGetter<FilingCommon.AttributeSequence>> getters = getFile2CourierAttributeGetters(params.types, session.getFilingVersion());
    // build the result stream and send it
    StreamOf<AttributeSequence> stream = new StreamOf<>(0, 1, 16, AttributeSequence::make);
    for (FileEntry fe : hits) {
        AttributeSequence as = stream.add();
        for (iValueGetter<FilingCommon.AttributeSequence> getter : getters) {
            getter.access(as, fe);
        }
    }
    sendBulkData("list", params.listing, stream);
}

Example 4 with FileEntry

use of dev.hawala.xns.level4.filing.fs.FileEntry in project dodo by devhawala.

the class FilingImpl method retrieve.

/*
	 * Retrieve: PROCEDURE [ file: Handle, content: BulkData.Sink, session: Session ]
	 *   REPORTS [ AccessError, AuthenticationError, ConnectionError,
	 *             HandleError, SessionError, TransferError, UndefinedError ]
	 *   = 13;
	 */
private static void retrieve(RetrieveParams params, RECORD results) {
    logParams("retrieve", params);
    // check session
    Session session = resolveSession(params.session);
    Volume vol = session.getService().getVolume();
    // check specified file handle
    Handle fileHandle = Handle.get(params.file);
    if (fileHandle == null || fileHandle.isNullHandle()) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    FileEntry fe = fileHandle.getFe();
    if (fe == null) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    // transfer file content
    try {
        ByteContentSink sink = new ByteContentSink(params.content);
        vol.retrieveContent(fe.getFileID(), sink, session.getUsername());
    } catch (NoMoreWriteSpaceException | IOException e) {
        log("##  Filing.Retrieve() => %s : %s\n", e.getClass().getName(), e.getMessage());
        new TransferErrorRecord(TransferProblem.aborted).raise();
    }
    // prolongate the sessions life if this took longer
    session.continueUse();
}

Example 5 with FileEntry

use of dev.hawala.xns.level4.filing.fs.FileEntry in project dodo by devhawala.

the class FilingImpl method serialize.

/*
	 * Serialize: PROCEDURE [ file: Handle, serializedFile: BulkData.Sink,
	 *                        session: Session ]
	 *   REPORTS [ AccessError, AuthenticationError, ConnectionError,
	 *             HandleError, SessionError, TransferError, UndefinedError ]
	 *   = 15;
	 */
private static void serialize(SerializeParams params, RECORD results) {
    logParams("serialize", params);
    // check session
    Session session = resolveSession(params.session);
    // check file
    Handle fileHandle = Handle.get(params.file);
    if (fileHandle == null || fileHandle.isNullHandle()) {
        new HandleErrorRecord(HandleProblem.nullDisallowed).raise();
    }
    if (fileHandle.isVolumeRoot()) {
        new AccessErrorRecord(AccessProblem.accessRightsInsufficient).raise();
    }
    // prevent session timeout when processing large trees
    session.holdClosing();
    try {
        // build up the tree structure
        SerializedFile serializedFile = new SerializedFile(ws -> new SerializeTreeWireStream(ws, session), session.getFilingVersion() < 5);
        FileEntry startFe = fileHandle.getFe();
        fillSerializeData(startFe, serializedFile.file, session.getFilingVersion());
        // transfer the data
        sendBulkData("serialize", params.serializedFile, serializedFile);
    } finally {
        // restart timeout checks on the session
        session.continueUse();
    }
}