engine/api/src/main/java/org/apache/cloudstack/engine/subsystem/api/storage/StoragePoolAllocator.java

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package org.apache.cloudstack.engine.subsystem.api.storage;

import java.util.List;

import com.cloud.deploy.DeploymentPlan;
import com.cloud.deploy.DeploymentPlanner.ExcludeList;
import com.cloud.storage.StoragePool;
import com.cloud.utils.component.Adapter;
import com.cloud.vm.DiskProfile;
import com.cloud.vm.VirtualMachineProfile;

/**
 */
public interface StoragePoolAllocator extends Adapter {
    /**
     * Overloaded method calls allocateToPool with bypassStorageTypeCheck = false
     * and returns a list of pools suitable.
     **/
    List<StoragePool> allocateToPool(DiskProfile dskCh, VirtualMachineProfile vmProfile, DeploymentPlan plan, ExcludeList avoid, int returnUpTo);

    /**
     * Determines which storage pools are suitable for the guest virtual machine
     * and returns a list of pools suitable.
     *
     * Allocators must set any other pools not considered for allocation in the
     * ExcludeList avoid. Thus the avoid set and the list of pools suitable,
     * together must cover the entire pool set in the cluster.
     *
     * @param DiskProfile
     *            dskCh
     * @param VirtualMachineProfile
     *            vmProfile
     * @param DeploymentPlan
     *            plan
     * @param ExcludeList
     *            avoid
     * @param int returnUpTo (use -1 to return all possible pools)
     * @param boolean bypassStorageTypeCheck allows bypassing useLocalStorage check for provided DiskProfile when true
     * @return List<StoragePool> List of storage pools that are suitable for the
     *         VM
     **/
    List<StoragePool> allocateToPool(DiskProfile dskCh, VirtualMachineProfile vmProfile, DeploymentPlan plan, ExcludeList avoid, int returnUpTo, boolean bypassStorageTypeCheck);


    static int RETURN_UPTO_ALL = -1;

    List<StoragePool> reorderPools(List<StoragePool> pools, VirtualMachineProfile vmProfile, DeploymentPlan plan, DiskProfile dskCh);
}