}
}
public ConsoleProxyVO doAssignProxy(long dataCenterId, long vmId) {
ConsoleProxyVO proxy = null;
VMInstanceVO vm = _instanceDao.findById(vmId);
if (vm == null) {
s_logger.warn("VM " + vmId + " no longer exists, return a null proxy for vm:" + vmId);
return null;
}
if (vm != null && vm.getState() != State.Running) {
if (s_logger.isInfoEnabled()) {
s_logger.info("Detected that vm : " + vmId + " is not currently at running state, we will fail the proxy assignment for it");
}
return null;
}
if (_allocProxyLock.lock(ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_SYNC)) {
try {
if (vm.getProxyId() != null) {
proxy = _consoleProxyDao.findById(vm.getProxyId());
if (proxy != null) {
if (!isInAssignableState(proxy)) {
if (s_logger.isInfoEnabled()) {
s_logger.info("A previous assigned proxy is not assignable now, reassign console proxy for user vm : " + vmId);
}
proxy = null;
} else {
if (_consoleProxyDao.getProxyActiveLoad(proxy.getId()) < _capacityPerProxy || hasPreviousSession(proxy, vm)) {
if (s_logger.isTraceEnabled()) {
s_logger.trace("Assign previous allocated console proxy for user vm : " + vmId);
}
if (proxy.getActiveSession() >= _capacityPerProxy) {
s_logger.warn("Assign overloaded proxy to user VM as previous session exists, user vm : " + vmId);
}
} else {
proxy = null;
}
}
}
}
if (proxy == null) {
proxy = assignProxyFromRunningPool(dataCenterId);
}
} finally {
_allocProxyLock.unlock();
}
} else {
s_logger.error("Unable to acquire synchronization lock to get/allocate proxy resource for vm :" + vmId + ". Previous console proxy allocation is taking too long");
}
if (proxy == null) {
s_logger.warn("Unable to find or allocate console proxy resource");
return null;
}
// if it is a new assignment or a changed assignment, update the record
if (vm.getProxyId() == null || vm.getProxyId().longValue() != proxy.getId()) {
_instanceDao.updateProxyId(vmId, proxy.getId(), DateUtil.currentGMTTime());
}
proxy.setSslEnabled(_sslEnabled);
if (_sslEnabled) {