boolean _isMaster(DBObject res) {
Object x = res.get("ismaster");
if (x == null) throw new IllegalStateException("ismaster shouldn't be null: " + res);
if (x instanceof Boolean) return (Boolean) x;
if (x instanceof Number) return ((Number) x).intValue() == 1;
throw new IllegalArgumentException("invalid ismaster [" + x + "] : " + x.getClass().getName());
}
synchronized void update(Set<Node> seenNodes) {
try {
long start = System.currentTimeMillis();
CommandResult res = _port.runCommand(_mongo.getDB("admin"), _isMasterCmd);
_lastCheck = System.currentTimeMillis();
_pingTime = _lastCheck - start;
if (res == null) {
_ok = false;
return;
}
_ok = true;
_isMaster = res.getBoolean("ismaster", false);
_isSecondary = res.getBoolean("secondary", false);
_lastPrimarySignal = res.getString("primary");
if (res.containsField("hosts")) {
for (Object x : (List) res.get("hosts")) {
String host = x.toString();
Node node = _addIfNotHere(host);
if (node != null && seenNodes != null) seenNodes.add(node);
}
}
if (res.containsField("passives")) {
for (Object x : (List) res.get("passives")) {
String host = x.toString();
Node node = _addIfNotHere(host);
if (node != null && seenNodes != null) seenNodes.add(node);
}
}
if (_isMaster) {
// max size was added in 1.8
if (res.containsField("maxBsonObjectSize"))
maxBsonObjectSize = ((Integer) res.get("maxBsonObjectSize")).intValue();
else maxBsonObjectSize = Bytes.MAX_OBJECT_SIZE;
}
} catch (MongoException e) {
Throwable root = e;
if (e.getCause() != null) root = e.getCause();
_logger.log(Level.FINE, "node down: " + _addr + " " + root);
_ok = false;
} catch (Exception e) {
_logger.log(Level.SEVERE, "can't update node: " + _addr, e);
_ok = false;
}
if (!_isMaster) return;
try {
DB db = _mongo.getDB("local");
_port.checkAuth(db);
DBObject config = _port.findOne(db, "system.replset", new BasicDBObject());
if (config == null) {
// probably a replica pair
// TODO: add this in when pairs are really gone
// _logger.log( Level.SEVERE , "no replset config!" );
} else if (config.get("$err") != null
&& UNAUTHENTICATED_ERROR_CODE == (Integer) config.get("code")) {
_logger.log(
Level.WARNING,
"Replica Set updater cannot get results, call authenticate on 'local' or 'admin' db");
} else {
String setName = config.get("_id").toString();
if (_setName == null) {
_setName = setName;
_logger = Logger.getLogger(_rootLogger.getName() + "." + setName);
} else if (!_setName.equals(setName)) {
_logger.log(Level.SEVERE, "mis match set name old: " + _setName + " new: " + setName);
return;
}
// TODO: look at members
}
} catch (MongoException e) {
if (_setName != null) {
// this probably means the master is busy, so going to ignore
} else {
_logger.log(Level.SEVERE, "can't get initial config from node: " + _addr, e);
}
} catch (Exception e) {
_logger.log(Level.SEVERE, "unexpected error getting config from node: " + _addr, e);
}
}