private String topologyToJson()

in fractions/topology-webapp/src/main/java/org/wildfly/swarm/topology/webapp/runtime/TopologySSEServlet.java [97:149]
45 lines of code
11 McCabe index (conditional complexity)

    private String topologyToJson(boolean secure) {
        StringBuilder json = new StringBuilder();

        json.append("{");

        Map<String, List<Topology.Entry>> map = this.topology.asMap();

        Set<String> keys = map.keySet();
        Iterator<String> keyIter = keys.iterator();

        while (keyIter.hasNext()) {
            String key = keyIter.next();
            json.append("  ").append('"').append(key).append('"').append(": [");
            List<Topology.Entry> list = map.get(key);
            Iterator<Topology.Entry> listIter = list.iterator();
            String proxyContext = getServletContext().getInitParameter(key + "-proxy");
            if (proxyContext != null) {
                List<String> tags = new ArrayList<>();
                tags.add(secure ? "https" : "http");
                while (listIter.hasNext()) {
                    Topology.Entry server = listIter.next();
                    tags.add(formatMaybeIpv6(server.getAddress()) + ":" + server.getPort());
                }
                populateEndpointAndTagsJson(json, proxyContext, tags);
            } else {
                while (listIter.hasNext()) {
                    Topology.Entry server = listIter.next();

                    boolean invalidServerAddress = false;
                    try {
                        //noinspection ResultOfMethodCallIgnored
                        InetAddress.getByName(server.getAddress());
                    } catch (UnknownHostException e) {
                        invalidServerAddress = true;
                    }

                    String endpoint = (!invalidServerAddress ? (server.getTags().contains("https") ? "https" : "http") + "://" : "")
                            + formatMaybeIpv6(server.getAddress()) + ":" + server.getPort();
                    populateEndpointAndTagsJson(json, endpoint, server.getTags());
                    if (listIter.hasNext()) {
                        json.append(",");
                    }
                }
            }
            json.append("]");
            if (keyIter.hasNext()) {
                json.append(",");
            }
        }

        json.append("}\n\n");
        return json.toString();
    }