@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);
}
protected Database getDatabase() {
if (ownDatabase != null) return ownDatabase;
else return fdbService.getDatabase();
}