// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with 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.
package com.cloud.ha;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.agent.AgentManager;
import com.cloud.agent.api.Answer;
import com.cloud.agent.api.PingTestCommand;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.host.Host.Type;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.host.dao.HostDao;
import com.cloud.resource.ResourceManager;
import com.cloud.utils.component.AdapterBase;
import com.cloud.utils.db.QueryBuilder;
import com.cloud.utils.db.SearchCriteria.Op;
public abstract class AbstractInvestigatorImpl extends AdapterBase implements Investigator {
private static final Logger s_logger = Logger.getLogger(AbstractInvestigatorImpl.class);
@Inject
private final HostDao _hostDao = null;
@Inject
private final AgentManager _agentMgr = null;
@Inject
private final ResourceManager _resourceMgr = null;
@Override
public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
return true;
}
@Override
public boolean start() {
return true;
}
@Override
public boolean stop() {
return true;
}
// Host.status is up and Host.type is routing
protected List<Long> findHostByPod(long podId, Long excludeHostId) {
QueryBuilder<HostVO> sc = QueryBuilder.create(HostVO.class);
sc.and(sc.entity().getType(), Op.EQ, Type.Routing);
sc.and(sc.entity().getPodId(), Op.EQ, podId);
sc.and(sc.entity().getStatus(), Op.EQ, Status.Up);
List<HostVO> hosts = sc.list();
List<Long> hostIds = new ArrayList<Long>(hosts.size());
for (HostVO h : hosts) {
hostIds.add(h.getId());
}
if (excludeHostId != null) {
hostIds.remove(excludeHostId);
}
return hostIds;
}
protected Status testIpAddress(Long hostId, String testHostIp) {
try {
Answer pingTestAnswer = _agentMgr.send(hostId, new PingTestCommand(testHostIp));
if (pingTestAnswer == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("host (" + testHostIp + ") returns null answer");
}
return null;
}
if (pingTestAnswer.getResult()) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("host (" + testHostIp + ") has been successfully pinged, returning that host is up");
}
// computing host is available, but could not reach agent, return false
return Status.Up;
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("host (" + testHostIp + ") cannot be pinged, returning null ('I don't know')");
}
return null;
}
} catch (AgentUnavailableException e) {
return null;
} catch (OperationTimedoutException e) {
return null;
}
}
}