api/src/main/java/org/apache/cloudstack/affinity/AffinityGroupProcessor.java

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package org.apache.cloudstack.affinity;

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.component.Adapter;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.VirtualMachineProfile;

import java.util.List;

public interface AffinityGroupProcessor extends Adapter {

    /**
     * process() is called to apply any user preferences to the deployment plan
     * and avoid set for the given VM placement.
     *
     * @param vm
     *            virtual machine.
     * @param plan
     *            deployment plan that tells you where it's being deployed to.
     * @param avoid
     *            avoid these data centers, pods, clusters, or hosts.
     * @param vmList
     *            list of virtual machines objects according to which the affinity group should be processed.
     *            This can be used to process a theoretical state in some cases like generating DRS plans
     */
    void process(VirtualMachineProfile vm, DeploymentPlan plan, ExcludeList avoid, List<VirtualMachine> vmList) throws AffinityConflictException;

    void process(VirtualMachineProfile vm, DeploymentPlan plan, ExcludeList avoid) throws AffinityConflictException;

    /**
     * getType() should return the affinity/anti-affinity group being
     * implemented
     *
     * @return String Affinity/Anti-affinity type
     */
    String getType();

    /**
     * check() is called to see if the planned destination fits the group
     * requirements
     *
     * @param vm
     *            virtual machine.
     * @param plannedDestination
     *            deployment destination where VM is planned to be deployed
     */
    boolean check(VirtualMachineProfile vm, DeployDestination plannedDestination) throws AffinityConflictException;

    /**
     * isAdminControlledGroup() should return true if the affinity/anti-affinity
     * group can only be operated on[create/delete/modify] by the Admin
     *
     * @return boolean true/false
     */
    boolean isAdminControlledGroup();

    /**
     * canBeSharedDomainWide() should return true if the affinity/anti-affinity
     * group can be created for a domain and shared by all accounts under the
     * domain.
     *
     * @return boolean true/false
     */
    boolean canBeSharedDomainWide();

    /**
     * subDomainAccess() should return true if the affinity/anti-affinity group
     * can be created for a domain and used by the sub-domains. If true, all
     * accounts under the sub-domains can see this group and use it.
     *
     * @return boolean true/false
     */
    boolean subDomainAccess();

    void handleDeleteGroup(AffinityGroup group);

}