private void init()

in geronimo-microprofile-reporter/src/main/java/org/apache/geronimo/microprofile/reporter/storage/front/ReporterEndpoints.java [82:111]

29 lines of code
6 McCabe index (conditional complexity)


    private void init() {
        final ClassLoader loader = Thread.currentThread().getContextClassLoader();
        chartJs = (chartJsResource.startsWith("/") ?
                Stream.of(chartJsResource, chartJsResource.substring(1)) : Stream.of(chartJsResource, '/' + chartJsResource))
                .map(it -> {
                    final InputStream stream = loader.getResourceAsStream(it);
                    if (stream == null) {
                        return null;
                    }
                    try (final BufferedReader reader = new BufferedReader(new InputStreamReader(
                            requireNonNull(stream,
                                    "Chart.js bundle not found")))) {
                        return reader.lines().collect(joining("\n"));
                    } catch (final IOException e) {
                        throw new IllegalStateException("Didn't find chart.js bundle");
                    }
                })
                .filter(Objects::nonNull)
                .findFirst()
                .orElseThrow(() -> new IllegalStateException("No " + chartJsResource + " found, did you add org.webjars.bower:chart.js:2.7.3 to your classpath?"));

        tiles = new ArrayList<>(7);
        if (tracing.isActive()) {
            tiles.add("Spans");
        }
        tiles.addAll(asList("Counters", "Gauges", "Histograms", "Meters", "Timers"));
        if (health.isActive()) {
            tiles.add("Health Checks");
        }
    }