/** {@inheritDoc} */
    @Override
    public int compareTo(CancelMessageId m) {
      int res = Long.compare(reqId, m.reqId);

      if (res == 0) res = m.nodeId.compareTo(nodeId);

      return res;
    }
 @Override
 public int compare(Event o1, Event o2) {
   return Long.compare(o1.localOrder(), o2.localOrder());
 }
 @Override
 public int compare(VisorLogFile f1, VisorLogFile f2) {
   return Long.compare(f2.lastModified(), f1.lastModified());
 }
  /**
   * Load client configuration from the properties map.
   *
   * @param prefix Prefix for the client properties.
   * @param in Properties map to load configuration from.
   * @throws GridClientException If parsing configuration failed.
   */
  public void load(String prefix, Properties in) throws GridClientException {
    while (prefix.endsWith(".")) prefix = prefix.substring(0, prefix.length() - 1);

    if (!prefix.isEmpty()) prefix += ".";

    String balancer = in.getProperty(prefix + "balancer");
    String connectTimeout = in.getProperty(prefix + "connectTimeout");
    String cred = in.getProperty(prefix + "credentials");
    String autoFetchMetrics = in.getProperty(prefix + "autoFetchMetrics");
    String autoFetchAttrs = in.getProperty(prefix + "autoFetchAttributes");
    String maxConnIdleTime = in.getProperty(prefix + "idleTimeout");
    String proto = in.getProperty(prefix + "protocol");
    String srvrs = in.getProperty(prefix + "servers");
    String tcpNoDelay = in.getProperty(prefix + "tcp.noDelay");
    String topRefreshFreq = in.getProperty(prefix + "topology.refresh");

    String sslEnabled = in.getProperty(prefix + "ssl.enabled");

    String sslProto = in.getProperty(prefix + "ssl.protocol", "TLS");
    String sslKeyAlg = in.getProperty(prefix + "ssl.key.algorithm", "SunX509");

    String keyStorePath = in.getProperty(prefix + "ssl.keystore.location");
    String keyStorePwd = in.getProperty(prefix + "ssl.keystore.password");
    String keyStoreType = in.getProperty(prefix + "ssl.keystore.type");

    String trustStorePath = in.getProperty(prefix + "ssl.truststore.location");
    String trustStorePwd = in.getProperty(prefix + "ssl.truststore.password");
    String trustStoreType = in.getProperty(prefix + "ssl.truststore.type");

    String dataCfgs = in.getProperty(prefix + "data.configurations");

    setBalancer(resolveBalancer(balancer));

    if (!F.isEmpty(connectTimeout)) setConnectTimeout(Integer.parseInt(connectTimeout));

    if (!F.isEmpty(cred)) {
      int idx = cred.indexOf(':');

      if (idx >= 0 && idx < cred.length() - 1) {
        setSecurityCredentialsProvider(
            new SecurityCredentialsBasicProvider(
                new SecurityCredentials(cred.substring(0, idx), cred.substring(idx + 1))));
      } else {
        setSecurityCredentialsProvider(
            new SecurityCredentialsBasicProvider(new SecurityCredentials(null, null, cred)));
      }
    }

    if (!F.isEmpty(autoFetchMetrics)) setAutoFetchMetrics(Boolean.parseBoolean(autoFetchMetrics));

    if (!F.isEmpty(autoFetchAttrs)) setAutoFetchAttributes(Boolean.parseBoolean(autoFetchAttrs));

    if (!F.isEmpty(maxConnIdleTime)) setMaxConnectionIdleTime(Integer.parseInt(maxConnIdleTime));

    if (!F.isEmpty(proto)) setProtocol(GridClientProtocol.valueOf(proto));

    if (!F.isEmpty(srvrs)) setServers(Arrays.asList(srvrs.replaceAll("\\s+", "").split(",")));

    if (!F.isEmpty(tcpNoDelay)) setTcpNoDelay(Boolean.parseBoolean(tcpNoDelay));

    if (!F.isEmpty(topRefreshFreq)) setTopologyRefreshFrequency(Long.parseLong(topRefreshFreq));

    //
    // SSL configuration section
    //

    if (!F.isEmpty(sslEnabled) && Boolean.parseBoolean(sslEnabled)) {
      GridSslBasicContextFactory factory = new GridSslBasicContextFactory();

      factory.setProtocol(F.isEmpty(sslProto) ? "TLS" : sslProto);
      factory.setKeyAlgorithm(F.isEmpty(sslKeyAlg) ? "SunX509" : sslKeyAlg);

      if (F.isEmpty(keyStorePath))
        throw new IllegalArgumentException("SSL key store location is not specified.");

      factory.setKeyStoreFilePath(keyStorePath);

      if (keyStorePwd != null) factory.setKeyStorePassword(keyStorePwd.toCharArray());

      factory.setKeyStoreType(F.isEmpty(keyStoreType) ? "jks" : keyStoreType);

      if (F.isEmpty(trustStorePath))
        factory.setTrustManagers(GridSslBasicContextFactory.getDisabledTrustManager());
      else {
        factory.setTrustStoreFilePath(trustStorePath);

        if (trustStorePwd != null) factory.setTrustStorePassword(trustStorePwd.toCharArray());

        factory.setTrustStoreType(F.isEmpty(trustStoreType) ? "jks" : trustStoreType);
      }

      setSslContextFactory(factory);
    }

    //
    // Data configuration section
    //

    if (!F.isEmpty(dataCfgs)) {
      String[] names = dataCfgs.replaceAll("\\s+", "").split(",");
      Collection<GridClientDataConfiguration> list = new ArrayList<>();

      for (String cfgName : names) {
        if (F.isEmpty(cfgName)) continue;

        String name = in.getProperty(prefix + "data." + cfgName + ".name");
        String bal = in.getProperty(prefix + "data." + cfgName + ".balancer");
        String aff = in.getProperty(prefix + "data." + cfgName + ".affinity");

        GridClientDataConfiguration dataCfg = new GridClientDataConfiguration();

        dataCfg.setName(F.isEmpty(name) ? null : name);
        dataCfg.setBalancer(resolveBalancer(bal));
        dataCfg.setAffinity(resolveAffinity(aff));

        list.add(dataCfg);
      }

      setDataConfigurations(list);
    }
  }