Examples with FilterParser org.opennms.features.topology.plugins.topo.asset.filter.FilterParser used on opensource projects

Example 1 with FilterParser

use of org.opennms.features.topology.plugins.topo.asset.filter.FilterParser in project opennms by OpenNMS.

the class AssetGraphGenerator method generateGraphs.

public GraphML generateGraphs(GeneratorConfig config) {
    final LayerDefinitionRepository layerDefinitionRepository = new LayerDefinitionRepository();
    final List<LayerDefinition> layerDefinitions = layerDefinitionRepository.getDefinitions(config.getLayerHierarchies());
    final List<OnmsNode> nodes = nodeProvider.getNodes(layerDefinitions);
    // Define Layers
    final List<Layer> layers = layerDefinitions.stream().map(mapping -> mapping.getLayer()).collect(Collectors.toList());
    // Add last Layer for Nodes
    layers.add(new LayerBuilder().withId("nodes").withNamespace("nodes").withLabel("Nodes").withDescription("The nodes in the hierarchy of the topology").withItemProvider(node -> node).withIdGenerator(IdGenerator.SIMPLE).withSemanticZoomLevel(0).withVertexStatusProvider(true).build());
    // Ensure that all elements in the nodes do have values set
    layers.forEach(layer -> {
        List<OnmsNode> nodeWithNullValues = nodes.stream().filter(n -> layer.getItemProvider().getItem(n) == null).collect(Collectors.toList());
        if (!nodeWithNullValues.isEmpty()) {
            LOG.debug("Found nodes with null value for layer (id: {}, label: {}). Removing nodes {}", layer.getId(), layer.getLabel(), nodeWithNullValues.stream().map(n -> String.format("(id: %s, label: %s)", n.getId(), n.getLabel())).collect(Collectors.toList()));
            nodes.removeAll(nodeWithNullValues);
        }
    });
    // Apply additional filters
    final Map<String, Filter> filterMap = new FilterParser().parse(config.getFilters());
    final List<LayerDefinition> layersToFilter = layerDefinitionRepository.getDefinitions(filterMap.keySet());
    applyFilters(nodes, filterMap, layerDefinitionRepository);
    // Start generating the hierarchy
    // Overall graphml object
    final GraphML graphML = new GraphML();
    graphML.setProperty(GraphMLProperties.LABEL, config.getLabel());
    graphML.setProperty(GraphMLProperties.BREADCRUMB_STRATEGY, config.getBreadcrumbStrategy());
    // Build each Graph
    int index = 0;
    for (Layer layer : layers) {
        GraphMLGraph layerGraph = new GraphMLGraph();
        layerGraph.setId(config.getProviderId() + ":" + layer.getId());
        layerGraph.setProperty(GraphMLProperties.NAMESPACE, config.getProviderId() + ":" + layer.getNamespace());
        layerGraph.setProperty(GraphMLProperties.PREFERRED_LAYOUT, config.getPreferredLayout());
        layerGraph.setProperty(GraphMLProperties.LABEL, layer.getLabel());
        layerGraph.setProperty(GraphMLProperties.DESCRIPTION, layer.getDescription());
        layerGraph.setProperty(GraphMLProperties.FOCUS_STRATEGY, layer.getFocusStrategy().name());
        layerGraph.setProperty(GraphMLProperties.SEMANTIC_ZOOM_LEVEL, layer.getSemanticZoomLevel());
        layerGraph.setProperty(GraphMLProperties.VERTEX_STATUS_PROVIDER, layer.hasVertexStatusProvider());
        // Build layer for nodes
        for (OnmsNode eachNode : nodes) {
            final Object eachItem = layer.getItemProvider().getItem(eachNode);
            if (eachItem != null) {
                List<Layer> processedLayers = layers.subList(0, index);
                String id = layer.getIdGenerator().generateId(processedLayers, eachNode, layer.getNodeDecorator().getId(eachItem));
                if (layerGraph.getNodeById(id) == null) {
                    GraphMLNode node = new GraphMLNode();
                    node.setId(id);
                    layer.getNodeDecorator().decorate(node, eachItem);
                    layerGraph.addNode(node);
                }
            }
        }
        graphML.addGraph(layerGraph);
        index++;
    }
    // Now link all nodes, but only if there are at least 2 layers
    if (graphML.getGraphs().size() > 1) {
        nodes.forEach(n -> {
            List<GraphMLNode> path = getPath(n, graphML.getGraphs(), layers);
            if (path.size() != graphML.getGraphs().size()) {
                throw new IllegalStateException("");
            }
            for (int i = 0; i < path.size() - 1; i++) {
                GraphMLNode sourceNode = path.get(i);
                GraphMLNode targetNode = path.get(i + 1);
                GraphMLGraph sourceGraph = graphML.getGraphs().get(i);
                String edgeId = String.format("%s_%s", sourceNode.getId(), targetNode.getId());
                if (sourceGraph.getEdgeById(edgeId) == null) {
                    GraphMLEdge edge = new GraphMLEdge();
                    edge.setId(edgeId);
                    edge.setSource(sourceNode);
                    edge.setTarget(targetNode);
                    sourceGraph.addEdge(edge);
                }
            }
        });
    }
    return graphML;
}