Example usage for com.vaadin.server VaadinSession lock

List of usage examples for com.vaadin.server VaadinSession lock

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Prototype

Lock lock

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Usage

From source file:annis.gui.controlpanel.ExportPanel.java

License:Apache License

@Override
public void buttonClick(ClickEvent event) {
    // clean up old export
    if (tmpOutputFile != null && tmpOutputFile.exists()) {
        if (!tmpOutputFile.delete()) {
            log.warn("Could not delete {}", tmpOutputFile.getAbsolutePath());
        }/*  w  w  w .  jav  a2  s  .  com*/
    }
    tmpOutputFile = null;

    String exporterName = (String) cbExporter.getValue();
    final Exporter exporter = exporterMap.get(exporterName);
    if (exporter != null) {
        if (corpusListPanel.getSelectedCorpora().isEmpty()) {
            Notification.show("Please select a corpus", Notification.Type.WARNING_MESSAGE);
            btExport.setEnabled(true);
            return;
        }

        Callable<File> callable = new Callable<File>() {
            @Override
            public File call() throws Exception {
                File currentTmpFile = File.createTempFile("annis-export", ".txt");
                currentTmpFile.deleteOnExit();

                exporter.convertText(queryPanel.getQuery(), Integer.parseInt((String) cbLeftContext.getValue()),
                        Integer.parseInt((String) cbRightContext.getValue()),
                        corpusListPanel.getSelectedCorpora(), null, (String) txtParameters.getValue(),
                        Helper.getAnnisWebResource().path("query"),
                        new OutputStreamWriter(new FileOutputStream(currentTmpFile), "UTF-8"));

                return currentTmpFile;
            }
        };
        FutureTask<File> task = new FutureTask<File>(callable) {

            @Override
            protected void done() {
                VaadinSession session = VaadinSession.getCurrent();
                session.lock();
                try {
                    btExport.setEnabled(true);
                    progressIndicator.setEnabled(false);

                    try {
                        // copy the result to the class member in order to delete if
                        // when not longer needed
                        tmpOutputFile = get();
                    } catch (InterruptedException ex) {
                        log.error(null, ex);
                    } catch (ExecutionException ex) {
                        log.error(null, ex);
                    }

                    if (tmpOutputFile == null) {
                        Notification.show("Could not create the Exporter",
                                "The server logs might contain more information about this "
                                        + "so you should contact the provider of this ANNIS installation "
                                        + "for help.",
                                Notification.Type.ERROR_MESSAGE);
                    } else {
                        if (downloader != null && btDownload.getExtensions().contains(downloader)) {
                            btDownload.removeExtension(downloader);
                        }
                        downloader = new FileDownloader(new FileResource(tmpOutputFile));

                        downloader.extend(btDownload);
                        btDownload.setEnabled(true);

                        Notification.show("Export finished",
                                "Click on the button right to the export button to actually download the file.",
                                Notification.Type.HUMANIZED_MESSAGE);
                    }
                } finally {
                    session.unlock();
                }
            }

        };

        progressIndicator.setEnabled(true);

        ExecutorService singleExecutor = Executors.newSingleThreadExecutor();
        singleExecutor.submit(task);

    }

}

From source file:annis.gui.resultview.ResultSetPanel.java

License:Apache License

public ResultSetPanel(List<Match> matches, PluginSystem ps, InstanceConfig instanceConfig, int contextLeft,
        int contextRight, String segmentationName, ResultViewPanel parent, int firstMatchOffset) {
    this.ps = ps;
    this.segmentationName = segmentationName;
    this.contextLeft = contextLeft;
    this.contextRight = contextRight;
    this.parent = parent;
    this.matches = Collections.synchronizedList(matches);
    this.firstMatchOffset = firstMatchOffset;
    this.instanceConfig = instanceConfig;

    resultPanelList = Collections.synchronizedList(new LinkedList<SingleResultPanel>());
    cacheResolver = Collections/* w  w  w.  java 2  s. c  o  m*/
            .synchronizedMap(new HashMap<HashSet<SingleResolverRequest>, List<ResolverEntry>>());

    setSizeFull();

    layout = new CssLayout();
    setContent(layout);
    layout.addStyleName("result-view-css");

    addStyleName(ChameleonTheme.PANEL_BORDERLESS);
    addStyleName("result-view");

    indicatorLayout = new VerticalLayout();

    indicator = new ProgressIndicator();
    indicator.setIndeterminate(false);
    indicator.setValue(0f);
    indicator.setPollingInterval(250);
    indicator.setSizeUndefined();

    indicatorLayout.addComponent(indicator);
    indicatorLayout.setWidth("100%");
    indicatorLayout.setHeight("-1px");
    indicatorLayout.setComponentAlignment(indicator, Alignment.TOP_CENTER);
    indicatorLayout.setVisible(true);

    layout.addComponent(indicatorLayout);

    // enable indicator in order to get refresh GUI regulary
    indicator.setEnabled(true);

    ExecutorService singleExecutor = Executors.newSingleThreadExecutor();

    Callable<Boolean> run = new AllResultsFetcher();
    FutureTask<Boolean> task = new FutureTask<Boolean>(run) {
        @Override
        protected void done() {
            VaadinSession session = VaadinSession.getCurrent();
            session.lock();
            try {
                indicator.setEnabled(false);
                indicator.setVisible(false);
                indicatorLayout.setVisible(false);
            } finally {
                session.unlock();
            }
        }
    };
    singleExecutor.submit(task);
}

From source file:com.haulmont.cuba.web.toolkit.ui.CubaFileDownloader.java

License:Apache License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {
    if (path == null) {
        return false;
    }//from  w w  w  .  j a v  a 2  s . c om

    String targetResourceKey;
    DownloadStream stream;

    VaadinSession session = getSession();
    session.lock();
    try {
        String[] parts = path.split("/", 2);
        targetResourceKey = parts[0];
        if (targetResourceKey.isEmpty()) {
            return false;
        }

        Resource resource = getResource(targetResourceKey);
        if (resource == null) {
            return false;
        }

        boolean isViewDocumentRequest = targetResourceKey.startsWith(VIEW_RESOURCE_PREFIX);

        stream = ((ConnectorResource) resource).getStream();

        String contentDisposition = stream.getParameter(DownloadStream.CONTENT_DISPOSITION);
        if (contentDisposition == null) {
            // Content-Disposition: attachment generally forces download
            contentDisposition = (isViewDocumentRequest ? "inline" : "attachment") + "; "
                    + DownloadStream.getContentDispositionFilename(stream.getFileName());
        }

        stream.setParameter(DownloadStream.CONTENT_DISPOSITION, contentDisposition);

        // Content-Type to block eager browser plug-ins from hijacking the file
        if (isOverrideContentType() && !isViewDocumentRequest) {
            stream.setContentType("application/octet-stream;charset=UTF-8");
        } else {
            if (StringUtils.isNotEmpty(stream.getContentType())) {
                stream.setContentType(stream.getContentType() + ";charset=UTF-8\"");
            } else {
                stream.setContentType(";charset=UTF-8\"");
            }
        }
    } finally {
        session.unlock();
    }

    stream.writeResponse(request, response);
    return true;
}

From source file:com.haulmont.cuba.web.widgets.CubaFileDownloader.java

License:Apache License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {
    if (path == null) {
        return false;
    }/*from  ww w  .j a v  a 2 s. c  o  m*/

    String targetResourceKey;
    DownloadStream stream;

    VaadinSession session = getSession();
    session.lock();
    try {
        String[] parts = path.split("/", 2);
        targetResourceKey = parts[0];
        if (targetResourceKey.isEmpty()) {
            return false;
        }

        Resource resource = getResource(targetResourceKey);
        if (resource == null) {
            return false;
        }

        boolean isViewDocumentRequest = targetResourceKey.startsWith(VIEW_RESOURCE_PREFIX);

        stream = ((ConnectorResource) resource).getStream();

        String contentDisposition = stream.getParameter(DownloadStream.CONTENT_DISPOSITION);
        if (contentDisposition == null) {
            // Content-Disposition: attachment generally forces download
            contentDisposition = (isViewDocumentRequest ? "inline" : "attachment") + "; "
                    + DownloadStream.getContentDispositionFilename(stream.getFileName());
        }

        stream.setParameter(DownloadStream.CONTENT_DISPOSITION, contentDisposition);

        // Content-Type to block eager browser plug-ins from hijacking the file
        if (isOverrideContentType() && !isViewDocumentRequest && !isSafariOrIOS()) {
            stream.setContentType("application/octet-stream;charset=UTF-8");
        } else {
            if (StringUtils.isNotEmpty(stream.getContentType())) {
                stream.setContentType(stream.getContentType() + ";charset=UTF-8\"");
            } else {
                stream.setContentType(";charset=UTF-8\"");
            }
        }
    } finally {
        session.unlock();
    }

    stream.writeResponse(request, response);
    return true;
}

From source file:com.peergreen.webconsole.core.vaadin7.BaseUI.java

License:Open Source License

@Override
public void accessSynchronously(Runnable runnable) {
    Map<Class<?>, CurrentInstance> old = null;

    VaadinSession session = getSession();

    if (session == null) {
        throw new UIDetachedException();
    }/*from w  w  w .  j a  v a2  s .  c  o m*/

    // TODO PGWK-7 - hack to avoid exception when another session had lock
    //VaadinService.verifyNoOtherSessionLocked(session);

    session.lock();
    try {
        if (getSession() == null) {
            // UI was detached after fetching the session but before we
            // acquired the lock.
            throw new UIDetachedException();
        }
        old = CurrentInstance.setCurrent(this);
        runnable.run();
    } finally {
        session.unlock();
        if (old != null) {
            CurrentInstance.restoreInstances(old);
        }
    }
}

From source file:com.skysql.manager.ui.components.NodesLayout.java

License:Open Source License

/**
 * Refresh.//from   w ww.  j ava  2 s. co  m
 *
 * @param updaterThread the updater thread
 * @param parentSystemRecord the parent system record
 */
public synchronized void refresh(final OverviewPanel.UpdaterThread updaterThread,
        final SystemRecord parentSystemRecord) {

    VaadinSession session = getSession();
    if (session == null) {
        session = VaadinSession.getCurrent();
    }
    if (session == null) {
        return;
    }
    ManagerUI managerUI = session.getAttribute(ManagerUI.class);
    SystemInfo systemInfo = session.getAttribute(SystemInfo.class);
    OverviewPanel overviewPanel = session.getAttribute(OverviewPanel.class);

    if (parentSystemRecord == null) {
        systemID = null;
        placeholderLayout("Systems");
        return;
    } else if (parentSystemRecord.getNodes().length == 0) {
        placeholderLayout("Components");
        return;
    } else {
        if (placeholderLayout != null) {
            removeComponent(placeholderLayout);
            placeholderLayout = null;

            addStyleName("network");
        }
    }

    String[] newComponents = parentSystemRecord.getNodes();
    if (!parentSystemRecord.getID().equals(systemID)
            || (newComponents != null && !Arrays.equals(newComponents, components))) {
        systemID = parentSystemRecord.getID();
        components = newComponents;

        ManagerUI.log("Reload Components");

        String currentSelectedID = null;
        CCType currentSelectedType = null;
        ClusterComponent currentClusterComponent = session.getAttribute(ClusterComponent.class);
        if (currentClusterComponent != null) {
            currentSelectedID = currentClusterComponent.getID();
            currentSelectedType = currentClusterComponent.getType();
        }

        session.lock();
        try {

            // Here the UI is locked and can be updated
            ManagerUI.log("NodesLayout access run() removeall");
            removeAllComponents();

            ArrayList<ComponentButton> newButtons = new ArrayList<ComponentButton>();
            for (String componentID : parentSystemRecord.getNodes()) {

                final ClusterComponent clusterComponent;
                if (parentSystemRecord.getParentID() == null) {
                    // this is the ROOT record, where "nodes" is really the flat list of systems
                    clusterComponent = systemInfo.getSystemRecord(componentID);
                } else {
                    // this is a normal System record
                    clusterComponent = new NodeInfo(parentSystemRecord.getID(),
                            parentSystemRecord.getSystemType());
                    clusterComponent.setID(componentID);
                }

                //               if (updaterThread.flagged) {
                //                  ManagerUI.log("NodesLayout - flagged is set while adding nodes");
                //                  return;
                //               }

                ComponentButton button = clusterComponent.getButton();
                if (button == null) {
                    ManagerUI.log("NodesLayout access run() button not in component");
                    button = findButton(clusterComponent);
                }
                if (button == null) {
                    ManagerUI.log("NodesLayout access run() button not found");
                    button = new ComponentButton(clusterComponent);
                }
                addComponent(button);
                setComponentAlignment(button, Alignment.MIDDLE_CENTER);
                button.setEditable(isEditable);
                if (clusterComponent.getID().equals(currentSelectedID)
                        && clusterComponent.getType().equals(currentSelectedType) && !button.isSelected()) {
                    overviewPanel.clickLayout(button, true);
                }
                newButtons.add(button);
            }
            buttons = newButtons;
        } finally {
            session.unlock();
        }

    }

    //      if (updaterThread.flagged) {
    //         ManagerUI.log("NodesLayout - flagged is set after removeall");
    //         return;
    //      }

    ManagerUI.log("NodesLayout - before for loop - buttons: " + buttons.size());

    for (final ComponentButton button : buttons) {
        final ClusterComponent currentComponent = (ClusterComponent) button.getData();

        final ClusterComponent newComponent;

        switch (currentComponent.getType()) {
        case system:
            newComponent = systemInfo.updateSystem(currentComponent.getID());
            break;

        case node:
            NodeInfo nodeInfo = (NodeInfo) currentComponent;
            newComponent = new NodeInfo(nodeInfo.getParentID(), nodeInfo.getSystemType(), nodeInfo.getID());
            break;

        default:
            continue;
        }

        //         if (updaterThread.flagged) {
        //            ManagerUI.log("NodesLayout - flagged is set before run() ");
        //            return;
        //         }

        managerUI.access(new Runnable() {
            @Override
            public void run() {
                // Here the UI is locked and can be updated

                ManagerUI.log("NodesLayout access run() button " + newComponent.getName());

                String newName = newComponent.getName();
                if (newName != null && !newName.equals(currentComponent.getName())) {
                    button.setName(newName);
                    currentComponent.setName(newName);
                }

                String newState = newComponent.getState();
                currentComponent.setState(newState);

                String toolTip = null;
                switch (newComponent.getType()) {
                case system:
                    toolTip = ((SystemRecord) newComponent).ToolTip();
                    break;
                case node:
                    MonitorLatest monitorLatest = newComponent.getMonitorLatest();
                    String newCapacity = monitorLatest.getData().get(MonitorNames.capacity.name());
                    button.setIcon(currentComponent.getType().toString(), newState, newCapacity);

                    NodeInfo nodeInfo = (NodeInfo) newComponent;
                    toolTip = nodeInfo.ToolTip();
                    // carry over RunningTask(s)
                    nodeInfo.setCommandTask(((NodeInfo) currentComponent).getCommandTask());
                    button.setCommandLabel(nodeInfo.getTask());
                    break;
                default:
                    toolTip = "Unknown component type";
                    ManagerUI.error(toolTip);
                    break;
                }
                button.setDescription(toolTip);
                button.setData(newComponent);
                if (button.isSelected()) {
                    getSession().setAttribute(ClusterComponent.class, newComponent);
                }
            }
        });

    } // for all nodes

}

From source file:com.skysql.manager.ui.components.SystemLayout.java

License:Open Source License

/**
 * Refresh.//ww  w  . jav  a 2 s  .  co m
 *
 * @param updaterThread the updater thread
 * @param systemRecord the system record
 */
public void refresh(final OverviewPanel.UpdaterThread updaterThread, SystemRecord systemRecord) {

    VaadinSession session = getSession();

    if (session != null) {
        session.lock();
    }
    try {

        if (systemRecord == null || systemRecord.getID() == null
                || systemRecord.getID().equals(SystemInfo.SYSTEM_ROOT)) {
            setVisible(false);
            systemID = null;
            return;
        }

        if (!systemRecord.getID().equals(systemID)) {
            systemID = systemRecord.getID();

            systemSlot.removeAllComponents();

            systemButton = new ComponentButton(systemRecord);
            systemButton.addLayoutClickListener(componentListener);
            systemButton.setSelected(systemButton.isSelected());
            systemButton.setDescription(systemRecord.ToolTip());
            systemSlot.addComponent(systemButton);

            setEditable(isEditable);

            setVisible(systemRecord.getParentID() == null ? false : true);
        }

        systemButton.setData(systemRecord);
        if (systemButton.isSelected()) {
            getSession().setAttribute(ClusterComponent.class, systemRecord);
        }
    } finally {
        if (session != null) {
            session.unlock();
        }
    }

}

From source file:fi.semantum.strategia.custom.OnDemandFileDownloader.java

License:Open Source License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {
    VaadinSession session = getSession();

    session.lock();
    try {/*from   w  ww  .  j a va  2s  .c o m*/
        onDemandStreamSource.onRequest();
        getResource().setFilename(onDemandStreamSource.getFileName());
    } finally {
        session.unlock();
    }
    return super.handleConnectorRequest(request, response, path);
}

From source file:org.hip.vif.admin.admin.print.FileDownloaderExtension.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override//from   www. ja v  a  2s  .co m
public boolean handleConnectorRequest(final VaadinRequest inRequest, final VaadinResponse inResponse,
        final String inPath) throws IOException {
    if (!inPath.matches("dl(/.*)?")) {
        // Ignore if it isn't for us
        return false;
    }

    final VaadinSession lSession = getSession();
    lSession.lock();

    DownloadStream lDownloadStream = null;
    try {
        final Collection<GroupWrapper> lSelected = (Collection<GroupWrapper>) groupSelect.getValue();
        Collection<GroupExtent> lGroups = new ArrayList<GroupExtent>();
        for (final GroupWrapper lGroup : lSelected) {
            final Long lGroupID = lGroup.getGroupID();
            if (lGroupID.equals(0l)) {
                lGroups = printTask.getAllGroups();
                break;
            } else {
                lGroups.add(new GroupExtent(lGroup.getGroupID()));
            }
        }

        final DownloadFile lDownloadFile = new DownloadFile(lGroups, VaadinSession.getCurrent().getLocale());
        lDownloadStream = lDownloadFile.getStream();
    } catch (final Exception exc) {
        LOG.error("Error encountered while printing the discussion groups!", exc); //$NON-NLS-1$
    } finally {
        lSession.unlock();
    }
    if (lDownloadStream != null) {
        lDownloadStream.writeResponse(inRequest, inResponse);
    }
    groupSelect.clear();
    return true;
}

From source file:org.vaadin.gridfiledownloader.GridFileDownloader.java

License:Apache License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {

    if (!path.matches("dl(/.*)?")) {
        // Ignore if it isn't for us
        return false;
    }//from   ww  w. j ava  2s  .com

    boolean markedProcessed = false;
    try {
        if (!waitForRPC()) {
            handleRPCTimeout();
            return false;
        }
        getResource().setFilename(gridStreamResource.getFilename());

        VaadinSession session = getSession();

        session.lock();
        DownloadStream stream;

        try {
            Resource resource = getFileDownloadResource();
            if (!(resource instanceof ConnectorResource)) {
                return false;
            }
            stream = ((ConnectorResource) resource).getStream();

            if (stream.getParameter("Content-Disposition") == null) {
                // Content-Disposition: attachment generally forces download
                stream.setParameter("Content-Disposition",
                        "attachment; filename=\"" + stream.getFileName() + "\"");
            }

            // Content-Type to block eager browser plug-ins from hijacking
            // the file
            if (isOverrideContentType()) {
                stream.setContentType("application/octet-stream;charset=UTF-8");
            }
        } finally {
            try {
                markProcessed();
                markedProcessed = true;
            } finally {
                session.unlock();
            }
        }
        try {
            stream.writeResponse(request, response);
        } catch (Exception e) {
            handleWriteResponseException(e);
        }
        return true;
    } finally {
        // ensure the download request always gets marked processed
        if (!markedProcessed) {
            markProcessed();
        }
    }
}