public static URL parseURL()

in dubbo-common/src/main/java/org/apache/dubbo/common/utils/UrlUtils.java [82:177]
92 lines of code
30 McCabe index (conditional complexity)

    public static URL parseURL(String address, Map<String, String> defaults) {
        if (StringUtils.isEmpty(address)) {
            throw new IllegalArgumentException("Address is not allowed to be empty, please re-enter.");
        }
        String url;
        if (address.contains("://") || address.contains(URL_PARAM_STARTING_SYMBOL)) {
            url = address;
        } else {
            String[] addresses = COMMA_SPLIT_PATTERN.split(address);
            url = addresses[0];
            if (addresses.length > 1) {
                StringBuilder backup = new StringBuilder();
                for (int i = 1; i < addresses.length; i++) {
                    if (i > 1) {
                        backup.append(',');
                    }
                    backup.append(addresses[i]);
                }
                url += URL_PARAM_STARTING_SYMBOL + RemotingConstants.BACKUP_KEY + "=" + backup.toString();
            }
        }
        String defaultProtocol = defaults == null ? null : defaults.get(PROTOCOL_KEY);
        if (StringUtils.isEmpty(defaultProtocol)) {
            defaultProtocol = DUBBO_PROTOCOL;
        }
        String defaultUsername = defaults == null ? null : defaults.get(USERNAME_KEY);
        String defaultPassword = defaults == null ? null : defaults.get(PASSWORD_KEY);
        int defaultPort = StringUtils.parseInteger(defaults == null ? null : defaults.get(PORT_KEY));
        String defaultPath = defaults == null ? null : defaults.get(PATH_KEY);
        Map<String, String> defaultParameters = defaults == null ? null : new HashMap<>(defaults);
        if (defaultParameters != null) {
            defaultParameters.remove(PROTOCOL_KEY);
            defaultParameters.remove(USERNAME_KEY);
            defaultParameters.remove(PASSWORD_KEY);
            defaultParameters.remove(HOST_KEY);
            defaultParameters.remove(PORT_KEY);
            defaultParameters.remove(PATH_KEY);
        }
        URL u = URL.cacheableValueOf(url);
        boolean changed = false;
        String protocol = u.getProtocol();
        String username = u.getUsername();
        String password = u.getPassword();
        String host = u.getHost();
        int port = u.getPort();
        String path = u.getPath();
        Map<String, String> parameters = new HashMap<>(u.getParameters());
        if (StringUtils.isEmpty(protocol)) {
            changed = true;
            protocol = defaultProtocol;
        }
        if (StringUtils.isEmpty(username) && StringUtils.isNotEmpty(defaultUsername)) {
            changed = true;
            username = defaultUsername;
        }
        if (StringUtils.isEmpty(password) && StringUtils.isNotEmpty(defaultPassword)) {
            changed = true;
            password = defaultPassword;
        }
        /*if (u.isAnyHost() || u.isLocalHost()) {
            changed = true;
            host = NetUtils.getLocalHost();
        }*/
        if (port <= 0) {
            if (defaultPort > 0) {
                changed = true;
                port = defaultPort;
            } else {
                changed = true;
                port = 9090;
            }
        }
        if (StringUtils.isEmpty(path)) {
            if (StringUtils.isNotEmpty(defaultPath)) {
                changed = true;
                path = defaultPath;
            }
        }
        if (defaultParameters != null && defaultParameters.size() > 0) {
            for (Map.Entry<String, String> entry : defaultParameters.entrySet()) {
                String key = entry.getKey();
                String defaultValue = entry.getValue();
                if (StringUtils.isNotEmpty(defaultValue)) {
                    String value = parameters.get(key);
                    if (StringUtils.isEmpty(value)) {
                        changed = true;
                        parameters.put(key, defaultValue);
                    }
                }
            }
        }
        if (changed) {
            u = new ServiceConfigURL(protocol, username, password, host, port, path, parameters);
        }
        return u;
    }