private String findNewMaster(
Map<String, LiveInstance> liveInstancesMap,
Map<String, InstanceConfig> instanceConfigs,
String prevMasterHost,
Set<String> slaveSet) {
String newMaster = null;
SlaveStatus slaveStatusOfNewMaster = null;
for (String slave : slaveSet) {
if (liveInstancesMap.containsKey(slave) && instanceConfigs.get(slave).getInstanceEnabled()) {
MySQLAdmin admin = new MySQLAdmin(instanceConfigs.get(slave));
SlaveStatus slaveStatus = admin.getSlaveStatus();
if (slaveStatus != null) {
String masterHost = slaveStatus.getString(SlaveStatusAttribute.Master_Host);
String masterPort = slaveStatus.getString(SlaveStatusAttribute.Master_Port);
String slaveIOStatus = slaveStatus.getString(SlaveStatusAttribute.Slave_IO_Running);
String slaveSQLStatus = slaveStatus.getString(SlaveStatusAttribute.Slave_SQL_Running);
String masterLogFile = slaveStatus.getString(SlaveStatusAttribute.Master_Log_File);
int readMasterLogPos = slaveStatus.getInt(SlaveStatusAttribute.Read_Master_Log_Pos);
if ((masterHost + "_" + masterPort).equals(prevMasterHost)
&& "YES".equalsIgnoreCase(slaveIOStatus)
&& "YES".equalsIgnoreCase(slaveSQLStatus)) {
if (newMaster == null) {
newMaster = slave;
slaveStatusOfNewMaster = slaveStatus;
} else {
boolean isThisSlaveAhead =
masterLogFile.compareTo(
slaveStatusOfNewMaster.getString(
SlaveStatusAttribute.Master_Log_File))
> 0
&& readMasterLogPos
> slaveStatusOfNewMaster.getInt(SlaveStatusAttribute.Read_Master_Log_Pos);
if (isThisSlaveAhead) {
newMaster = slave;
slaveStatusOfNewMaster = slaveStatus;
}
}
}
}
}
}
return newMaster;
}
private boolean waitRegister() {
long limitMs = System.currentTimeMillis() + PerfConf.get().UNREGISTER_TIMEOUT_MS;
while (System.currentTimeMillis() < limitMs) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
LOG.error(e);
return false;
}
if (mSlaveStatus.allRegistered()) {
return true;
}
}
List<String> remains = mSlaveStatus.getUnregisterSlaves();
StringBuffer sbInfo = new StringBuffer("Unregister time out:");
for (String slave : remains) {
sbInfo.append(" ").append(slave);
}
System.err.println(sbInfo.toString());
LOG.error(sbInfo.toString());
return false;
}
private boolean waitFinish() {
PerfConf conf = PerfConf.get();
while (true) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
return false;
}
String info = mSlaveStatus.getFinishStatus(conf.STATUS_DEBUG);
System.out.println(info);
LOG.info(info);
int state = mSlaveStatus.finished(conf.FAILED_THEN_ABORT, conf.FAILED_PERCENTAGE);
if (state == -1) {
System.err.println("Enough slaves failed. Abort all the slaves.");
LOG.error("Enough slaves failed. Abort all the slaves.");
return true;
}
if (state == 1) {
return true;
}
}
}
public void stop() throws Exception {
mSlaveStatus.cleanup();
stopMasterService();
}
