/*
* 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 org.apache.ambari.server.checks;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.controller.PrereqCheckRequest;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Host;
import org.apache.ambari.server.state.MaintenanceState;
import org.apache.ambari.server.state.Service;
import org.apache.ambari.server.state.ServiceComponent;
import org.apache.ambari.server.state.StackId;
import org.apache.ambari.server.state.stack.PrereqCheckStatus;
import org.apache.ambari.server.state.stack.PrerequisiteCheck;
import org.apache.ambari.server.state.stack.UpgradePack;
import org.apache.ambari.server.state.stack.UpgradePack.ProcessingComponent;
import org.apache.ambari.server.state.stack.upgrade.UpgradeType;
import com.google.inject.Singleton;
/**
* Checks that all hosts in maintenance state do not have master components.
*/
@Singleton
@UpgradeCheck(
group = UpgradeCheckGroup.MAINTENANCE_MODE,
order = 5.0f,
required = { UpgradeType.ROLLING, UpgradeType.NON_ROLLING, UpgradeType.HOST_ORDERED })
public class HostsMasterMaintenanceCheck extends AbstractCheckDescriptor {
static final String KEY_NO_UPGRADE_NAME = "no_upgrade_name";
static final String KEY_NO_UPGRADE_PACK = "no_upgrade_pack";
/**
* Constructor.
*/
public HostsMasterMaintenanceCheck() {
super(CheckDescription.HOSTS_MASTER_MAINTENANCE);
}
@Override
public boolean isApplicable(PrereqCheckRequest request) throws AmbariException {
return super.isApplicable(request) && request.getRepositoryVersion() != null;
}
@Override
public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException {
final String clusterName = request.getClusterName();
final Cluster cluster = clustersProvider.get().getCluster(clusterName);
final StackId stackId = cluster.getDesiredStackVersion();
final Set<String> hostsWithMasterComponent = new HashSet<>();
// TODO AMBARI-12698, need to pass the upgrade pack to use in the request, or at least the type.
final String upgradePackName = repositoryVersionHelper.get().getUpgradePackageName(stackId.getStackName(), stackId.getStackVersion(), request.getRepositoryVersion(), null);
if (upgradePackName == null) {
prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL);
String fail = getFailReason(KEY_NO_UPGRADE_NAME, prerequisiteCheck, request);
prerequisiteCheck.setFailReason(String.format(fail, stackId.getStackName(), stackId.getStackVersion()));
return;
}
final UpgradePack upgradePack = ambariMetaInfo.get().getUpgradePacks(stackId.getStackName(), stackId.getStackVersion()).get(upgradePackName);
if (upgradePack == null) {
prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL);
String fail = getFailReason(KEY_NO_UPGRADE_PACK, prerequisiteCheck, request);
prerequisiteCheck.setFailReason(String.format(fail, upgradePackName));
return;
}
final Set<String> componentsFromUpgradePack = new HashSet<>();
for (Map<String, ProcessingComponent> task: upgradePack.getTasks().values()) {
componentsFromUpgradePack.addAll(task.keySet());
}
for (Service service: cluster.getServices().values()) {
for (ServiceComponent serviceComponent: service.getServiceComponents().values()) {
if (serviceComponent.isMasterComponent() && componentsFromUpgradePack.contains(serviceComponent.getName())) {
hostsWithMasterComponent.addAll(serviceComponent.getServiceComponentHosts().keySet());
}
}
}
final Map<String, Host> clusterHosts = clustersProvider.get().getHostsForCluster(clusterName);
for (Map.Entry<String, Host> hostEntry : clusterHosts.entrySet()) {
final Host host = hostEntry.getValue();
if (host.getMaintenanceState(cluster.getClusterId()) == MaintenanceState.ON && hostsWithMasterComponent.contains(host.getHostName())) {
prerequisiteCheck.getFailedOn().add(host.getHostName());
}
}
if (!prerequisiteCheck.getFailedOn().isEmpty()) {
prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL);
prerequisiteCheck.setFailReason(getFailReason(prerequisiteCheck, request));
}
}
}