public OSGi waitForService()

in jax-rs.whiteboard/src/main/java/org/apache/aries/jax/rs/whiteboard/internal/Registry.java [50:88]

30 lines of code
4 McCabe index (conditional complexity)


    public OSGi<T> waitForService(String filterString) {
        Filter filter;

        try {
            filter = FrameworkUtil.createFilter(filterString);
        }
        catch (InvalidSyntaxException e) {
            throw new RuntimeException();
        }

        return fromOsgiRunnable((bc, p) -> {
            synchronized (Registry.this) {
                FilteredPublisher<T> ep = new FilteredPublisher<>(p, filter);

                _publishers.add(ep);

                for (ServiceWithProperties<T> serviceWithProperties :
                    new ArrayList<>(_servicesWithPropertiesList)) {

                    ep.publishIfMatched(
                        serviceWithProperties.service,
                        serviceWithProperties.properties);
                }

                return () -> {
                    synchronized (Registry.this) {
                        _publishers.remove(ep);

                        for (ServiceWithProperties<T> serviceWithProperties :
                            new ArrayList<>(_servicesWithPropertiesList)) {

                            ep.retract(serviceWithProperties.service);
                        }
                    }
                };
            }

        });
    }