private Meter findMeter()

in geronimo-metrics/src/main/java/org/apache/geronimo/microprofile/metrics/cdi/MeteredInterceptor.java [75:105]

30 lines of code
9 McCabe index (conditional complexity)


    private Meter findMeter(final Executable executable) {
        if (meters == null) {
            synchronized (this) {
                if (meters == null) {
                    meters = new ConcurrentHashMap<>();
                }
            }
        }
        Meter meter = meters.get(executable);
        if (meter == null) {
            final AnnotatedType<?> type = beanManager.createAnnotatedType(bean.getBeanClass());
            final Metered metered = Stream.concat(type.getMethods().stream(), type.getConstructors().stream())
                    .filter(it -> it.getJavaMember().equals(executable))
                    .findFirst()
                    .map(m -> m.getAnnotation(Metered.class))
                    .orElse(null);
            final String name = Names.findName(
                    Modifier.isAbstract(executable.getDeclaringClass().getModifiers()) ? type.getJavaClass() : executable.getDeclaringClass(),
                    executable, metered == null ? null : metered.name(),
                    metered != null && metered.absolute(),
                    ofNullable(extension.getAnnotation(type, Metered.class)).map(Metered::name).orElse(""));

            meter = registry.getMeter(
                    new MetricID(name, extension.createTags(metered == null ? new String[0] : metered.tags())));
            if (meter == null) {
                throw new IllegalStateException("No meter with name [" + name + "] found in registry [" + registry + "]");
            }
            meters.putIfAbsent(executable, meter);
        }
        return meter;
    }