Examples with CheckedOperation org.opennms.features.topology.api.CheckedOperation used on opensource projects

Example 1 with CheckedOperation

use of org.opennms.features.topology.api.CheckedOperation in project opennms by OpenNMS.

the class TopologyUI method init.

@Override
protected void init(final VaadinRequest request) {
    // Register a cleanup
    request.getService().addSessionDestroyListener((SessionDestroyListener) event -> m_widgetManager.removeUpdateListener(TopologyUI.this));
    try {
        m_headerHtml = getHeader(((VaadinServletRequest) request).getHttpServletRequest());
    } catch (final Exception e) {
        LOG.error("failed to get header HTML for request " + request.getPathInfo(), e.getCause());
    }
    //create VaadinApplicationContext
    m_applicationContext = m_serviceManager.createApplicationContext(new VaadinApplicationContextCreator() {

        @Override
        public VaadinApplicationContext create(OnmsServiceManager manager) {
            VaadinApplicationContextImpl context = new VaadinApplicationContextImpl();
            context.setSessionId(request.getWrappedSession().getId());
            context.setUiId(getUIId());
            context.setUsername(request.getRemoteUser());
            return context;
        }
    });
    m_verticesUpdateManager = new OsgiVerticesUpdateManager(m_serviceManager, m_applicationContext);
    m_serviceManager.getEventRegistry().addPossibleEventConsumer(this, m_applicationContext);
    // Set the algorithm last so that the criteria and SZLs are
    // in place before we run the layout algorithm.
    m_graphContainer.setApplicationContext(m_applicationContext);
    createLayouts();
    // Set up an error handler for UI-level exceptions
    setupErrorHandler();
    // Add an auto refresh handler to the GraphContainer
    setupAutoRefresher();
    loadUserSettings();
    // If no Topology Provider was selected (due to loadUserSettings(), fallback to default
    if (Strings.isNullOrEmpty(m_graphContainer.getMetaTopologyId())) {
        CheckedOperation defaultTopologySelectorOperation = getDefaultTopologySelectorOperation(m_bundlecontext);
        // no default found, abort
        Objects.requireNonNull(defaultTopologySelectorOperation, "No default GraphProvider found.");
        defaultTopologySelectorOperation.execute(Lists.newArrayList(), new DefaultOperationContext(TopologyUI.this, m_graphContainer, DisplayLocation.MENUBAR));
    }
    // Add a request handler that parses incoming focusNode and szl query parameters
    TopologyUIRequestHandler handler = new TopologyUIRequestHandler();
    getSession().addRequestHandler(handler);
    // deal with those in init case
    handler.handleRequestParameter(request);
    // Add the default criteria if we do not have already a criteria set
    if (getWrappedVertexHopCriteria(m_graphContainer).isEmpty() && noAdditionalFocusCriteria()) {
        List<Criteria> defaultCriteriaList = m_graphContainer.getTopologyServiceClient().getDefaults().getCriteria();
        if (defaultCriteriaList != null) {
            // set default
            defaultCriteriaList.forEach(eachCriteria -> m_graphContainer.addCriteria(eachCriteria));
        }
    }
    // We set the listeners at the end, to not fire them all the time when initializing the UI
    setupListeners();
    // We force a reload to trigger a fireGraphChanged()
    m_graphContainer.setDirty(true);
    m_graphContainer.redoLayout();
    // Trigger a selectionChanged
    m_selectionManager.selectionChanged(m_selectionManager);
}