public Set getServiceDTOS()

in dubbo-admin-server/src/main/java/org/apache/dubbo/admin/service/impl/ProviderServiceImpl.java [261:305]
39 lines of code
17 McCabe index (conditional complexity)

    public Set<ServiceDTO> getServiceDTOS(String pattern, String filter, String env) {
        List<Provider> providers = new ArrayList<>();
        if (!filter.contains(Constants.ANY_VALUE) && !filter.contains(Constants.INTERROGATION_POINT)) {
            // filter with specific string
            if (Constants.IP.equals(pattern)) {
                providers = findByAddress(filter);
            } else if (Constants.SERVICE.equals(pattern)) {
                providers = findByService(filter);
            } else if (Constants.APPLICATION.equals(pattern)) {
                providers = findByApplication(filter);
            }
        } else {
            // filter with fuzzy search
            Set<String> candidates = Collections.emptySet();
            if (Constants.SERVICE.equals(pattern)) {
                candidates = findServices();
            } else if (Constants.APPLICATION.equals(pattern)) {
                candidates = findApplications();
            } else if (Constants.IP.equals(pattern)) {
                candidates = new HashSet<>(findAddresses());
            }
            // replace dot symbol and asterisk symbol to java-based regex pattern
            filter = filter.toLowerCase().replace(Constants.PUNCTUATION_POINT, Constants.PUNCTUATION_SEPARATOR_POINT);
            // filter start with [* 、? 、+] will triggering PatternSyntaxException
            if (filter.startsWith(Constants.ANY_VALUE) || filter.startsWith(Constants.INTERROGATION_POINT) || filter.startsWith(Constants.PLUS_SIGNS)) {
                filter = Constants.PUNCTUATION_POINT + filter;
            }
            // search with no case insensitive
            Pattern regex = Pattern.compile(filter, Pattern.CASE_INSENSITIVE);
            for (String candidate : candidates) {
                Matcher matcher = regex.matcher(candidate);
                if (matcher.matches() || matcher.lookingAt()) {
                    if (Constants.SERVICE.equals(pattern)) {
                        providers.addAll(findByService(candidate));
                    } else if (Constants.IP.equals(pattern)) {
                        providers.addAll(findByAddress(candidate));
                    } else {
                        providers.addAll(findByApplication(candidate));
                    }
                }
            }
        }

        return convertProviders2DTO(providers);
    }