public GossipingPropertyFileSnitch(int refreshPeriodInSeconds) throws ConfigurationException {
    snitchHelperReference = new AtomicReference<ReconnectableSnitchHelper>();

    reloadConfiguration();

    try {
      psnitch = new PropertyFileSnitch();
      logger.info("Loaded {} for compatibility", PropertyFileSnitch.SNITCH_PROPERTIES_FILENAME);
    } catch (ConfigurationException e) {
      logger.info(
          "Unable to load {}; compatibility mode disabled",
          PropertyFileSnitch.SNITCH_PROPERTIES_FILENAME);
    }

    try {
      Utils.resourceToFile(SnitchProperties.RACKDC_PROPERTY_FILENAME);
      Runnable runnable =
          new WrappedRunnable() {
            @Override
            protected void runMayThrow() throws ConfigurationException {
              reloadConfiguration();
            }
          };
      ResourceWatcher.watch(
          SnitchProperties.RACKDC_PROPERTY_FILENAME, runnable, refreshPeriodInSeconds * 1000);
    } catch (ConfigurationException ex) {
      logger.error(
          "{} found, but does not look like a plain file. Will not watch it for changes",
          SnitchProperties.RACKDC_PROPERTY_FILENAME);
    }
  }
Exemplo n.º 2
0
 public FailureDetector() {
   // Register this instance with JMX
   try {
     MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
     mbs.registerMBean(this, new ObjectName(Utils.getJmxObjectName("FailureDetector")));
   } catch (Exception e) {
     throw new RuntimeException(e);
   }
 }
Exemplo n.º 3
0
  @Override
  public boolean isAlive(InetAddress ep) {
    if (ep.equals(Utils.getBroadcastAddress())) return true;

    EndpointState epState = Gossiper.instance.getEndpointStateForEndpoint(ep);
    // we could assert not-null, but having isAlive fail screws a node over so badly that
    // it's worth being defensive here so minor bugs don't cause disproportionate
    // badness.  (See lealone-1463 for an example).
    if (epState == null) logger.error("unknown endpoint {}", ep);
    return epState != null && epState.isAlive();
  }
  @Override
  public void gossiperStarting() {
    super.gossiperStarting();

    Gossiper.instance.addLocalApplicationState(
        ApplicationState.INTERNAL_IP,
        StorageService.VALUE_FACTORY.internalIP(Utils.getLocalAddress().getHostAddress()));

    reloadGossiperState();

    gossipStarted = true;
  }
  /**
   * Return the rack for which an endpoint resides in
   *
   * @param endpoint the endpoint to process
   * @return string of rack
   */
  @Override
  public String getRack(InetAddress endpoint) {
    if (endpoint.equals(Utils.getBroadcastAddress())) return myRack;

    EndpointState epState = Gossiper.instance.getEndpointStateForEndpoint(endpoint);
    if (epState == null || epState.getApplicationState(ApplicationState.RACK) == null) {
      if (psnitch == null) {
        if (savedEndpoints == null) savedEndpoints = ClusterMetaData.loadDcRackInfo();
        if (savedEndpoints.containsKey(endpoint)) return savedEndpoints.get(endpoint).get("rack");
        return DEFAULT_RACK;
      } else return psnitch.getRack(endpoint);
    }
    return epState.getApplicationState(ApplicationState.RACK).value;
  }