org.jclouds.openstack.nova.v2_0.compute.predicates.GetImageWhenImageInZoneHasActiveStatusPredicateWithResult.java Source code

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Here is the source code for org.jclouds.openstack.nova.v2_0.compute.predicates.GetImageWhenImageInZoneHasActiveStatusPredicateWithResult.java

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/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.jclouds.openstack.nova.v2_0.compute.predicates;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;

import org.jclouds.compute.domain.Image;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.logging.Logger;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.ImageInZone;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.ZoneAndId;
import org.jclouds.predicates.PredicateWithResult;

import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;

/**
 * @author David Alves
 */
public final class GetImageWhenImageInZoneHasActiveStatusPredicateWithResult
        implements PredicateWithResult<ZoneAndId, Image> {

    @Resource
    @Named(ComputeServiceConstants.COMPUTE_LOGGER)
    protected Logger logger = Logger.NULL;

    private org.jclouds.openstack.nova.v2_0.domain.Image result;
    private ZoneAndId resultZoneAndId;
    private RuntimeException lastFailure;
    private Function<ImageInZone, Image> imageInZoneToImage;
    private NovaApi api;

    @Inject
    public GetImageWhenImageInZoneHasActiveStatusPredicateWithResult(
            Function<ImageInZone, Image> imageInZoneToImage, NovaApi api) {
        this.imageInZoneToImage = imageInZoneToImage;
        this.api = api;
    }

    @Override
    public boolean apply(ZoneAndId input) {
        result = checkNotNull(findImage(ZoneAndId.fromZoneAndId(input.getZone(), input.getId())));
        resultZoneAndId = input;
        switch (result.getStatus()) {
        case ACTIVE:
            logger.info("<< Image %s is available for use. %s", input.getId(), result);
            return true;
        case UNRECOGNIZED:
        case SAVING:
            logger.debug("<< Image %s is not available yet. %s", input.getId(), result);
            return false;
        default:
            lastFailure = new IllegalStateException("Image " + input.getId() + " was not created. " + result);
            throw lastFailure;
        }
    }

    @Override
    public Image getResult() {
        return imageInZoneToImage.apply(new ImageInZone(result, resultZoneAndId.getZone()));
    }

    @Override
    public Throwable getLastFailure() {
        return lastFailure;
    }

    public org.jclouds.openstack.nova.v2_0.domain.Image findImage(final ZoneAndId zoneAndId) {
        return Iterables.tryFind(api.getImageApiForZone(zoneAndId.getZone()).listImagesInDetail(),
                new Predicate<org.jclouds.openstack.nova.v2_0.domain.Image>() {
                    @Override
                    public boolean apply(org.jclouds.openstack.nova.v2_0.domain.Image input) {
                        return input.getId().equals(zoneAndId.getId());
                    }
                }).orNull();

    }
}