// 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 javax.ejb.Local;
import org.apache.log4j.Logger;
import com.cloud.agent.AgentManager;
import com.cloud.agent.api.CheckVirtualMachineAnswer;
import com.cloud.agent.api.CheckVirtualMachineCommand;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.utils.component.AdapterBase;
import com.cloud.utils.component.Inject;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine.State;
@Local(value=Investigator.class)
public class CheckOnAgentInvestigator extends AdapterBase implements Investigator {
private final static Logger s_logger = Logger.getLogger(CheckOnAgentInvestigator.class);
@Inject AgentManager _agentMgr;
protected CheckOnAgentInvestigator() {
}
@Override
public Status isAgentAlive(HostVO agent) {
return null;
}
@Override
public Boolean isVmAlive(VMInstanceVO vm, HostVO host) {
CheckVirtualMachineCommand cmd = new CheckVirtualMachineCommand(vm.getInstanceName());
try {
CheckVirtualMachineAnswer answer = (CheckVirtualMachineAnswer)_agentMgr.send(vm.getHostId(), cmd);
if (!answer.getResult()) {
s_logger.debug("Unable to get vm state on " + vm.toString());
return null;
}
s_logger.debug("Agent responded with state " + answer.getState().toString());
return answer.getState() == State.Running;
} catch (AgentUnavailableException e) {
s_logger.debug("Unable to reach the agent for " + vm.toString() + ": " + e.getMessage());
return null;
} catch (OperationTimedoutException e) {
s_logger.debug("Operation timed out for " + vm.toString() + ": " + e.getMessage());
return null;
}
}
}