content: // 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.cloudstack.affinity;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import javax.inject.Inject;
  import javax.naming.ConfigurationException;
  
  import org.apache.commons.collections.CollectionUtils;
  
  import org.apache.cloudstack.affinity.dao.AffinityGroupDao;
  import org.apache.cloudstack.affinity.dao.AffinityGroupVMMapDao;
  import org.apache.cloudstack.engine.cloud.entity.api.db.VMReservationVO;
  import org.apache.cloudstack.engine.cloud.entity.api.db.dao.VMReservationDao;
  import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
  
  import com.cloud.configuration.Config;
  import com.cloud.deploy.DeployDestination;
  import com.cloud.deploy.DeploymentPlan;
  import com.cloud.deploy.DeploymentPlanner.ExcludeList;
  import com.cloud.exception.AffinityConflictException;
  import com.cloud.utils.DateUtil;
  import com.cloud.utils.NumbersUtil;
  import com.cloud.utils.db.Transaction;
  import com.cloud.utils.db.TransactionCallback;
  import com.cloud.utils.db.TransactionCallbackNoReturn;
  import com.cloud.utils.db.TransactionStatus;
  import com.cloud.vm.VMInstanceVO;
  import com.cloud.vm.VirtualMachine;
  import com.cloud.vm.VirtualMachineProfile;
  import com.cloud.vm.dao.UserVmDao;
  import com.cloud.vm.dao.VMInstanceDao;
  
  public class HostAntiAffinityProcessor extends AffinityProcessorBase implements AffinityGroupProcessor {
  
      @Inject
      protected UserVmDao _vmDao;
      @Inject
      protected VMInstanceDao _vmInstanceDao;
      @Inject
      protected AffinityGroupDao _affinityGroupDao;
      @Inject
      protected AffinityGroupVMMapDao _affinityGroupVMMapDao;
      private int _vmCapacityReleaseInterval;
      @Inject
      protected ConfigurationDao _configDao;
  
      @Inject
      protected VMReservationDao _reservationDao;
  
      @Override
      public void process(VirtualMachineProfile vmProfile, DeploymentPlan plan, ExcludeList avoid, List<VirtualMachine> vmList) throws AffinityConflictException {
          VirtualMachine vm = vmProfile.getVirtualMachine();
          List<AffinityGroupVMMapVO> vmGroupMappings = _affinityGroupVMMapDao.findByVmIdType(vm.getId(), getType());
  
          if (CollectionUtils.isEmpty(vmGroupMappings)) {
              return;
          }
          List<Long> affinityGroupIds = vmGroupMappings.stream().map(AffinityGroupVMMapVO::getAffinityGroupId).collect(Collectors.toList());
          Transaction.execute(new TransactionCallbackNoReturn() {
              @Override
              public void doInTransactionWithoutResult(TransactionStatus status) {
                  if (!affinityGroupIds.isEmpty()) {
                      _affinityGroupDao.listByIds(affinityGroupIds, true);
                  }
                  for (AffinityGroupVMMapVO vmGroupMapping : vmGroupMappings) {
                      processAffinityGroup(vmGroupMapping, avoid, vm);
                  }
              }
          });
  
      }
  
      protected void processAffinityGroup(AffinityGroupVMMapVO vmGroupMapping, ExcludeList avoid, VirtualMachine vm) {
          if (vmGroupMapping != null) {
              AffinityGroupVO group = _affinityGroupDao.findById(vmGroupMapping.getAffinityGroupId());
  
              if (logger.isDebugEnabled()) {
                      logger.debug(String.format("Processing affinity group %s for VM %s", group, vm));
              }
  
              List<Long> groupVMIds = _affinityGroupVMMapDao.listVmIdsByAffinityGroup(group.getId());
              groupVMIds.remove(vm.getId());
  
              for (Long groupVMId : groupVMIds) {
                  VMInstanceVO groupVM = _vmInstanceDao.findById(groupVMId);
                  if (groupVM != null && !groupVM.isRemoved()) {
                      if (groupVM.getHostId() != null) {
                          avoid.addHost(groupVM.getHostId());
                          if (logger.isDebugEnabled()) {
                              logger.debug("Added host {} to avoid set, since VM {} is present on the host", groupVM.getHostId(), groupVM);
                          }
                      }
                  } else if (Arrays.asList(VirtualMachine.State.Starting, VirtualMachine.State.Stopped).contains(groupVM.getState()) && groupVM.getLastHostId() != null) {
                      long secondsSinceLastUpdate = (DateUtil.currentGMTTime().getTime() - groupVM.getUpdateTime().getTime()) / 1000;
                      if (secondsSinceLastUpdate < _vmCapacityReleaseInterval) {
                          avoid.addHost(groupVM.getLastHostId());
                          if (logger.isDebugEnabled()) {
                              logger.debug("Added host {} to avoid set, since VM {} is present on the host, in Stopped state but has reserved capacity", groupVM.getLastHostId(), groupVM);
                          }
                      }
                  }
              }
          }
      }
  
      @Override
      public boolean configure(final String name, final Map<String, Object> params) throws ConfigurationException {
          super.configure(name, params);
          _vmCapacityReleaseInterval = NumbersUtil.parseInt(_configDao.getValue(Config.CapacitySkipcountingHours.key()), 3600);
          return true;
      }
  
      @Override
      public boolean check(VirtualMachineProfile vmProfile, DeployDestination plannedDestination) throws AffinityConflictException {
  
          if (plannedDestination.getHost() == null) {
              return true;
          }
          long plannedHostId = plannedDestination.getHost().getId();
  
          VirtualMachine vm = vmProfile.getVirtualMachine();
  
          List<AffinityGroupVMMapVO> vmGroupMappings = _affinityGroupVMMapDao.findByVmIdType(vm.getId(), getType());
          if (CollectionUtils.isEmpty(vmGroupMappings)) {
              return true;
          }
  
          for (AffinityGroupVMMapVO vmGroupMapping : vmGroupMappings) {
              // if more than 1 VM's are present in the group then check for
              // conflict due to parallel deployment
              List<Long> groupVMIds = _affinityGroupVMMapDao.listVmIdsByAffinityGroup(vmGroupMapping.getAffinityGroupId());
              groupVMIds.remove(vm.getId());
  
              for (Long groupVMId : groupVMIds) {
                  VMReservationVO vmReservation = _reservationDao.findByVmId(groupVMId);
                  if (vmReservation != null && vmReservation.getHostId() != null && vmReservation.getHostId().equals(plannedHostId)) {
                      if (logger.isDebugEnabled()) {
                          logger.debug(String.format("Planned destination for VM %s conflicts with an existing VM %d reserved on the same host %s", vm, vmReservation.getVmId(), plannedDestination.getHost()));
                      }
                      return false;
                  }
              }
          }
  
          List<Long> affinityGroupIds = vmGroupMappings.stream().map(AffinityGroupVMMapVO::getAffinityGroupId).collect(Collectors.toList());
          return Transaction.execute(new TransactionCallback<Boolean>() {
              @Override
              public Boolean doInTransaction(TransactionStatus status) {
                  if (!affinityGroupIds.isEmpty()) {
                      _affinityGroupDao.listByIds(affinityGroupIds, true);
                  }
                  for (AffinityGroupVMMapVO vmGroupMapping : vmGroupMappings) {
                      // if more than 1 VM's are present in the group then check for
                      // conflict due to parallel deployment
                      List<Long> groupVMIds = _affinityGroupVMMapDao.listVmIdsByAffinityGroup(vmGroupMapping.getAffinityGroupId());
                      groupVMIds.remove(vm.getId());
  
                      for (Long groupVMId : groupVMIds) {
                          VMReservationVO vmReservation = _reservationDao.findByVmId(groupVMId);
                          if (vmReservation != null && vmReservation.getHostId() != null && vmReservation.getHostId().equals(plannedHostId)) {
                              if (logger.isDebugEnabled()) {
                                  logger.debug("Planned destination for VM " + vm.getId() + " conflicts with an existing VM " + vmReservation.getVmId() +
                                          " reserved on the same host " + plannedHostId);
                              }
                              return false;
                          }
                      }
                  }
                  return true;
              }
          });
      }
  
  }
  