public boolean failoverAllowed() {
// We allow to Failover provided
// our broker list is not empty and
// we haven't gone through all of them
boolean b =
_connectionDetails.getBrokerCount() > 0
&& _failedAttemps <= _connectionDetails.getBrokerCount();
_logger.info("============================================================");
_logger.info(toString());
_logger.info("FailoverAllowed " + b);
_logger.info("============================================================");
return b;
}
public BrokerDetails getNextBrokerDetails() {
BrokerDetails broker = null;
synchronized (_brokerListLock) {
if (_currentBrokerIndex == (_connectionDetails.getBrokerCount() - 1)) {
_currentBrokerIndex = 0;
} else {
_currentBrokerIndex++;
}
broker = _connectionDetails.getBrokerDetails(_currentBrokerIndex);
// When the broker list is updated it will include the current broker as well
// There is no point trying it again, so trying the next one.
if (_currentBrokerDetail != null
&& broker.getHost().equals(_currentBrokerDetail.getHost())
&& broker.getPort() == _currentBrokerDetail.getPort()) {
if (_connectionDetails.getBrokerCount() > 1) {
return getNextBrokerDetails();
} else {
_failedAttemps++;
return null;
}
}
}
String delayStr = broker.getProperty(BrokerDetails.OPTIONS_CONNECT_DELAY);
if (delayStr != null) {
Long delay = Long.parseLong(delayStr);
_logger.info("Delay between connect retries:" + delay);
try {
Thread.sleep(delay);
} catch (InterruptedException ie) {
return null;
}
} else {
_logger.info(
"No delay between connect retries, use tcp://host:port?connectdelay='value' to enable.");
}
_failedAttemps++;
_currentBrokerDetail = broker;
return broker;
}
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("FailoverExchange:\n");
sb.append("\n Current Broker Index:");
sb.append(_currentBrokerIndex);
sb.append("\n Failed Attempts:");
sb.append(_failedAttemps);
sb.append("\n Orignal broker details:");
sb.append(_originalBrokerDetail).append("\n");
sb.append("\n -------- Broker List -----------\n");
for (int i = 0; i < _connectionDetails.getBrokerCount(); i++) {
if (i == _currentBrokerIndex) {
sb.append(">");
}
sb.append(_connectionDetails.getBrokerDetails(i));
sb.append("\n");
}
sb.append("--------------------------------\n");
return sb.toString();
}
