private void modifiedService()

in src/main/java/org/apache/sling/auth/core/impl/AuthenticationRequirementsManager.java [400:446]
44 lines of code
12 McCabe index (conditional complexity)

    private void modifiedService(final ResourceMapper mapper, final ServiceReference<?> ref) {
        final String[] authReqPaths = Converters.standardConverter()
                .convert(ref.getProperty(AuthConstants.AUTH_REQUIREMENTS))
                .to(String[].class);
        final Long id = (Long) ref.getProperty(Constants.SERVICE_ID);
        if (authReqPaths.length > 0) {
            final Set<String> oldPaths = regProps.get(id);
            if (oldPaths == null) {
                addService(mapper, ref);
            } else {
                final Set<String> paths = buildPathsSet(mapper, authReqPaths);
                if (paths.isEmpty()) {
                    removeService(id);
                } else {
                    final List<AuthenticationRequirementHolder> authReqs = props.get(id);
                    // compare sets
                    for (final String oldPath : oldPaths) {
                        if (oldPath == null || oldPath.isEmpty()) {
                            continue;
                        } else if (!paths.contains(oldPath)) {
                            // remove
                            final AuthenticationRequirementHolder holder =
                                    AuthenticationRequirementHolder.fromConfig(oldPath, ref);
                            authReqs.remove(holder);
                            this.removeHolder(holder);
                        }
                    }
                    for (final String path : paths) {
                        if (path == null || path.isEmpty()) {
                            logger.warn(
                                    "Ignoring null/empty path while updating the auth requirements for service {}", id);
                        } else if (!oldPaths.contains(path)) {
                            // add
                            final AuthenticationRequirementHolder holder =
                                    AuthenticationRequirementHolder.fromConfig(path, ref);
                            authReqs.add(holder);
                            this.addHolder(holder);
                        }
                    }
                    regProps.put(id, paths);
                    logger.debug("Updated auth requirements for service {} : {}", id, paths);
                }
            }
        } else {
            removeService(id);
        }
    }