Ejemplo n.º 1
0
  @Override
  public void start() {
    String clusterFile = configService.getProperty(CONFIG_CLUSTER_FILE);
    if (clusterFile.length() == 0) {
      ownDatabase = null;
    } else {
      ownDatabase = fdbService.getFDB().open(clusterFile);
    }
    byte[] prefix;
    try {
      prefix = configService.getProperty(CONFIG_PREFIX).getBytes("ISO-8859-1");
    } catch (UnsupportedEncodingException ex) {
      throw new AkibanInternalException("Error encoding prefix", ex);
    }
    dataSubspace = new Subspace(tupleFrom(METRIC_KEY), prefix);
    confSubspace = new Subspace(tupleFrom(METRIC_CONF_KEY), prefix);
    confChangesSubspace = new Subspace(tupleFrom(METRIC_CONF_CHANGES_KEY), prefix);
    // NOTE: Java does not expose a nanosecond wallclock timer, like POSIX
    // CLOCK_REALTIME, only one like CLOCK_MONOTONIC. (Among other things, 64 bits is
    // only 292 years.) There is a tradeoff between using synchronized clocks in a
    // multi-node environment and using clocks that NTP doesn't change so that
    // small-scale deltas are always accurate.  fdbserver metrics choose the former.
    timebase = System.currentTimeMillis() * 1000000 - System.nanoTime();
    // TODO: Consider recomputing this periodically. See also ServerSchemaTablesServiceImpl.
    address = "127.0.0.1";
    try {
      address = InetAddress.getLocalHost().getHostAddress();
    } catch (IOException ex) {
      // Ignore
    }
    address = address + ":" + configService.getProperty("fdbsql.postgres.port");
    flushInterval = Long.parseLong(configService.getProperty(CONFIG_FLUSH_INTERVAL));

    backgroundThread =
        new Thread() {
          @Override
          public void run() {
            backgroundThread();
          }
        };
    loadConf();
    running = true;
    backgroundThread.start();
    sqlLayerRunningMetric = addBooleanMetric(SQL_LAYER_RUNNING_NAME);
    sqlLayerRunningMetric.set(true);
  }
Ejemplo n.º 2
0
 protected Database getDatabase() {
   if (ownDatabase != null) return ownDatabase;
   else return fdbService.getDatabase();
 }