private Set map()

in src/main/java/org/opensearch/security/securityconf/ConfigModelV6.java [1161:1225]
48 lines of code
24 McCabe index (conditional complexity)

        private Set<String> map(final User user, final TransportAddress caller) {

            if (user == null || users == null || abars == null || bars == null || hosts == null) {
                return Collections.emptySet();
            }

            final Set<String> securityRoles = new HashSet<>();

            if (rolesMappingResolution == ConfigConstants.RolesMappingResolution.BOTH
                    || rolesMappingResolution == ConfigConstants.RolesMappingResolution.BACKENDROLES_ONLY) {
                if (log.isDebugEnabled()) {
                    log.debug("Pass backendroles from {}", user);
                }
                securityRoles.addAll(user.getRoles());
            }

            if (((rolesMappingResolution == ConfigConstants.RolesMappingResolution.BOTH
                    || rolesMappingResolution == ConfigConstants.RolesMappingResolution.MAPPING_ONLY))) {

                for (String p : WildcardMatcher.getAllMatchingPatterns(userMatchers, user.getName())) {
                    securityRoles.addAll(users.get(p));
                }

                for (String p : WildcardMatcher.getAllMatchingPatterns(barMatchers, user.getRoles())) {
                    securityRoles.addAll(bars.get(p));
                }

                for (List<WildcardMatcher> patterns : abars.keySet()) {
                    if (patterns.stream().allMatch(p -> p.matchAny(user.getRoles()))) {
                        securityRoles.addAll(abars.get(patterns));
                    }
                }

                if (caller != null) {
                    //IPV4 or IPv6 (compressed and without scope identifiers)
                    final String ipAddress = caller.getAddress();

                    final List<WildcardMatcher> hostMatchers = WildcardMatcher.matchers(hosts.keySet());
                    for (String p : WildcardMatcher.getAllMatchingPatterns(hostMatchers, ipAddress)) {
                        securityRoles.addAll(hosts.get(p));
                    }

                    if (caller.address() != null
                            && (hostResolverMode.equalsIgnoreCase("ip-hostname") || hostResolverMode.equalsIgnoreCase("ip-hostname-lookup"))) {
                        final String hostName = caller.address().getHostString();

                        for (String p : WildcardMatcher.getAllMatchingPatterns(hostMatchers, hostName)) {
                            securityRoles.addAll(hosts.get(p));
                        }
                    }

                    if (caller.address() != null && hostResolverMode.equalsIgnoreCase("ip-hostname-lookup")) {

                        final String resolvedHostName = caller.address().getHostName();

                        for (String p : WildcardMatcher.getAllMatchingPatterns(hostMatchers, resolvedHostName)) {
                            securityRoles.addAll(hosts.get(p));
                        }
                    }
                }
            }

            return Collections.unmodifiableSet(securityRoles);

        }