public Server()

in daemon/src/main/java/org/mvndaemon/mvnd/daemon/Server.java [103:168]
54 lines of code
4 McCabe index (conditional complexity)

    public Server() {
        // When spawning a new process, the child process is create within
        // the same process group.  This means that a few signals are sent
        // to the whole group.  This is the case for SIGINT (Ctrl-C) and
        // SIGTSTP (Ctrl-Z) which are both sent to all the processed in the
        // group when initiated from the controlling terminal.
        // This is only a problem when the client creates the daemon, but
        // without ignoring those signals, a client being interrupted will
        // also interrupt and kill the daemon.
        try {
            SignalHelper.ignoreStopSignals();
        } catch (Throwable t) {
            LOGGER.warn("Unable to ignore INT and TSTP signals", t);
        }
        this.daemonId = Environment.MVND_ID.asString();
        this.noDaemon = Environment.MVND_NO_DAEMON.asBoolean();
        this.keepAliveMs = Environment.MVND_KEEP_ALIVE.asDuration().toMillis();

        SocketFamily socketFamily = Environment.MVND_SOCKET_FAMILY
                .asOptional()
                .map(SocketFamily::valueOf)
                .orElse(SocketFamily.inet);

        try {
            cli = (DaemonCli) getClass()
                    .getClassLoader()
                    .loadClass("org.apache.maven.cli.DaemonMavenCling")
                    .getDeclaredConstructor()
                    .newInstance();
            registry = new DaemonRegistry(Environment.MVND_REGISTRY.asPath());
            socket = socketFamily.openServerSocket();
            executor = Executors.newScheduledThreadPool(1);
            strategy = DaemonExpiration.master();
            memoryStatus = new DaemonMemoryStatus(executor);

            SecureRandom secureRandom = new SecureRandom();
            byte[] token = new byte[DaemonInfo.TOKEN_SIZE];
            secureRandom.nextBytes(token);

            List<String> opts = new ArrayList<>();
            Arrays.stream(Environment.values())
                    .filter(Environment::isDiscriminating)
                    .forEach(
                            envKey -> envKey.asOptional().ifPresent(val -> opts.add(envKey.getProperty() + "=" + val)));
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug(opts.stream()
                        .collect(Collectors.joining("\n     ", "Initializing daemon with properties:\n     ", "\n")));
            }
            long cur = System.currentTimeMillis();
            info = new DaemonInfo(
                    daemonId,
                    Environment.MVND_JAVA_HOME.asString(),
                    Environment.MVND_HOME.asString(),
                    DaemonRegistry.getProcessId(),
                    SocketFamily.toString(socket.getLocalAddress()),
                    token,
                    Locale.getDefault().toLanguageTag(),
                    opts,
                    Busy,
                    cur,
                    cur);
            registry.store(info);
        } catch (Exception e) {
            throw new RuntimeException("Could not initialize " + Server.class.getName(), e);
        }
    }