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

Example 1 with EdgeProvider

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

the class GraphMLEdgeStatusProvider method getStatusForEdges.

@Override
public Map<EdgeRef, Status> getStatusForEdges(EdgeProvider edgeProvider, Collection<EdgeRef> edges, Criteria[] criteria) {
    final List<StatusScript> scripts = Lists.newArrayList();
    try (final DirectoryStream<Path> stream = Files.newDirectoryStream(getScriptPath())) {
        for (final Path path : stream) {
            // ignore readme
            if (".readme".equals(path.getFileName().toString())) {
                LOG.debug("Skipping .readme");
                continue;
            }
            final String extension = FilenameUtils.getExtension(path.toString());
            final ScriptEngine scriptEngine = this.scriptEngineManager.getEngineByExtension(extension);
            if (scriptEngine == null) {
                LOG.warn("No script engine found for extension '{}'", extension);
                continue;
            }
            LOG.debug("Found script: path={}, extension={}, engine={}", path, extension, scriptEngine);
            try (final Stream<String> lines = Files.lines(path, Charset.defaultCharset())) {
                final String source = lines.collect(Collectors.joining("\n"));
                scripts.add(new StatusScript(scriptEngine, source));
            }
        }
    } catch (final IOException e) {
        LOG.error("Failed to walk template directory: {}", getScriptPath());
        return Collections.emptyMap();
    }
    return serviceAccessor.getTransactionOperations().execute(transactionStatus -> edges.stream().filter(eachEdge -> eachEdge instanceof GraphMLEdge).map(edge -> (GraphMLEdge) edge).map(edge -> new HashMap.SimpleEntry<>(edge, computeEdgeStatus(scripts, edge))).filter(e -> e.getValue() != null).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)));
}