// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.ha;
import java.util.List;
import java.util.Map;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.host.dao.HostDao;
import com.cloud.network.NetworkManager;
import com.cloud.network.Networks.TrafficType;
import com.cloud.utils.component.Inject;
import com.cloud.vm.Nic;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine;
@Local(value={Investigator.class})
public class ManagementIPSystemVMInvestigator extends AbstractInvestigatorImpl {
private static final Logger s_logger = Logger.getLogger(ManagementIPSystemVMInvestigator.class);
private String _name = null;
@Inject private HostDao _hostDao = null;
@Inject private NetworkManager _networkMgr = null;
@Override
public Boolean isVmAlive(VMInstanceVO vm, HostVO host) {
if (!VirtualMachine.Type.isSystemVM(vm.getType())) {
s_logger.debug("Not a System Vm, unable to determine state of " + vm + " returning null");
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Testing if " + vm + " is alive");
}
if (vm.getHostId() == null) {
s_logger.debug("There's no host id for " + vm);
return null;
}
HostVO vmHost = _hostDao.findById(vm.getHostId());
if (vmHost == null) {
s_logger.debug("Unable to retrieve the host by using id " + vm.getHostId());
return null;
}
List<? extends Nic> nics = _networkMgr.getNicsForTraffic(vm.getId(), TrafficType.Management);
if (nics.size() == 0) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find a management nic, cannot ping this system VM, unable to determine state of " + vm + " returning null");
}
return null;
}
for (Nic nic : nics) {
if (nic.getIp4Address() == null) {
continue;
}
// get the data center IP address, find a host on the pod, use that host to ping the data center IP address
List<Long> otherHosts = findHostByPod(vmHost.getPodId(), vm.getHostId());
for (Long otherHost : otherHosts) {
Status vmState = testIpAddress(otherHost, nic.getIp4Address());
if (vmState == null) {
// can't get information from that host, try the next one
continue;
}
if (vmState == Status.Up) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("successfully pinged vm's private IP (" + vm.getPrivateIpAddress() + "), returning that the VM is up");
}
return Boolean.TRUE;
} else if (vmState == Status.Down) {
// We can't ping the VM directly...if we can ping the host, then report the VM down.
// If we can't ping the host, then we don't have enough information.
Status vmHostState = testIpAddress(otherHost, vmHost.getPrivateIpAddress());
if ((vmHostState != null) && (vmHostState == Status.Up)) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("successfully pinged vm's host IP (" + vmHost.getPrivateIpAddress() + "), but could not ping VM, returning that the VM is down");
}
return Boolean.FALSE;
}
}
}
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("unable to determine state of " + vm + " returning null");
}
return null;
}
@Override
public Status isAgentAlive(HostVO agent) {
return null;
}
@Override
public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
_name = name;
return true;
}
@Override
public String getName() {
return _name;
}
@Override
public boolean start() {
return true;
}
@Override
public boolean stop() {
return true;
}
}