org.dasein.cloud.cloudstack.compute.CSVolumeCapabilities Maven / Gradle / Ivy

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Implements the Dasein Cloud API for Cloud.com Cloudstack-based public and private clouds.
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/**
 * Copyright (C) 2009-2015 Dell, Inc.
 *
 * ====================================================================
 * Licensed 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.dasein.cloud.cloudstack.compute;

import org.dasein.cloud.AbstractCapabilities;
import org.dasein.cloud.CloudException;
import org.dasein.cloud.InternalException;
import org.dasein.cloud.Requirement;
import org.dasein.cloud.cloudstack.CSCloud;
import org.dasein.cloud.compute.Platform;
import org.dasein.cloud.compute.VmState;
import org.dasein.cloud.compute.VolumeCapabilities;
import org.dasein.cloud.compute.VolumeFormat;
import org.dasein.cloud.util.Cache;
import org.dasein.cloud.util.CacheLevel;
import org.dasein.cloud.util.NamingConstraints;
import org.dasein.util.uom.storage.Gigabyte;
import org.dasein.util.uom.storage.Storage;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Locale;

/**
 * Describes the capabilities of Cloudstack with respect to Dasein volume operations.
 * User: daniellemayne
 * Date: 06/03/2014
 * Time: 09:19
 */
public class CSVolumeCapabilities extends AbstractCapabilities implements VolumeCapabilities{
    public CSVolumeCapabilities(@Nonnull CSCloud provider) {
        super(provider);
    }

    @Override
    public boolean canAttach(VmState vmState) throws InternalException, CloudException {
        if (vmState.equals(VmState.STOPPED) || vmState.equals(VmState.RUNNING)) {
            return true;
        }
        return false;
    }

    @Override
    public boolean canDetach(VmState vmState) throws InternalException, CloudException {
        if (vmState.equals(VmState.STOPPED) || vmState.equals(VmState.RUNNING)) {
            return true;
        }
        return false;
    }

    @Override
    public int getMaximumVolumeCount() throws InternalException, CloudException {
        return -2;
    }

    @Override
    public int getMaximumVolumeProductIOPS() throws InternalException, CloudException {
        return LIMIT_UNKNOWN;
    }

    @Override
    public int getMinimumVolumeProductIOPS() throws InternalException, CloudException {
        return LIMIT_UNKNOWN;
    }

    @Override
    public int getMaximumVolumeSizeIOPS() throws InternalException, CloudException {
        return LIMIT_UNKNOWN;
    }

    @Override
    public int getMinimumVolumeSizeIOPS() throws InternalException, CloudException {
        return LIMIT_UNKNOWN;
    }

    @Nullable
    @Override
    public Storage getMaximumVolumeSize() throws InternalException, CloudException {
        return new Storage(5000, Storage.GIGABYTE);
    }

    @Nonnull
    @Override
    public Storage getMinimumVolumeSize() throws InternalException, CloudException {
        return new Storage(1, Storage.GIGABYTE);
    }

    @Override
    public @Nonnull NamingConstraints getVolumeNamingConstraints() throws CloudException, InternalException {
        // not sure what these are from the api docs, but from the UI they don't seem
        // to restrict on much of anything
        return NamingConstraints.getAlphaNumeric(1, 255);
    }

    @Nonnull
    @Override
    public String getProviderTermForVolume(@Nonnull Locale locale) {
        return "volume";
    }

    @Nonnull
    @Override
    public Requirement getVolumeProductRequirement() throws InternalException, CloudException {
        return Requirement.OPTIONAL;
    }

    @Override
    public @Nonnull Requirement getDeviceIdOnAttachRequirement() throws InternalException, CloudException {
        return Requirement.OPTIONAL;
    }

    @Override
    public boolean isVolumeSizeDeterminedByProduct() throws InternalException, CloudException {
        return false;
    }

    @Nonnull
    @Override
    public Iterable listPossibleDeviceIds(@Nonnull Platform platform) throws InternalException, CloudException {
        Cache cache;

        if( platform.isWindows() ) {
            cache = Cache.getInstance(getProvider(), "windowsDeviceIds", String.class, CacheLevel.CLOUD);
        }
        else {
            cache = Cache.getInstance(getProvider(), "unixDeviceIds", String.class, CacheLevel.CLOUD);
        }
        Iterable ids = cache.get(getContext());

        if( ids == null ) {
            ArrayList list = new ArrayList();

            if( platform.isWindows() ) {
                list.add("hde");
                list.add("hdf");
                list.add("hdg");
                list.add("hdh");
                list.add("hdi");
                list.add("hdj");
            }
            else {
                list.add("/dev/xvdc");
                list.add("/dev/xvde");
                list.add("/dev/xvdf");
                list.add("/dev/xvdg");
                list.add("/dev/xvdh");
                list.add("/dev/xvdi");
                list.add("/dev/xvdj");
            }
            ids = Collections.unmodifiableList(list);
            cache.put(getContext(), ids);
        }
        return ids;
    }

    @Nonnull
    @Override
    public Iterable listSupportedFormats() throws InternalException, CloudException {
        return Collections.singletonList(VolumeFormat.BLOCK);
    }

    @Nonnull
    @Override
    public Requirement requiresVMOnCreate() throws InternalException, CloudException {
        return Requirement.NONE;
    }
}