private Meta findCounter()

in geronimo-metrics/src/main/java/org/apache/geronimo/microprofile/metrics/cdi/CountedInterceptor.java [79:110]

31 lines of code
9 McCabe index (conditional complexity)


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

            final Counter counter = registry.getCounter(
                    new MetricID(name, extension.createTags(counted == null ? new String[0] : counted.tags())));
            if (counter == null) {
                throw new IllegalStateException("No counter with name [" + name + "] found in registry [" + registry + "]");
            }
            meta = new Meta(counter);
            counters.putIfAbsent(executable, meta);
        }
        return meta;
    }