/*
* 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.jclouds.openstack.glance.v1_0.functions.internal;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Iterables.getOnlyElement;
import static org.jclouds.openstack.glance.v1_0.options.ListImageOptions.Builder.marker;
import java.beans.ConstructorProperties;
import java.util.Collection;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.jclouds.collect.IterableWithMarker;
import org.jclouds.collect.IterableWithMarkers;
import org.jclouds.collect.internal.Arg0ToPagedIterable;
import org.jclouds.http.functions.ParseJson;
import org.jclouds.json.Json;
import org.jclouds.openstack.glance.v1_0.GlanceApi;
import org.jclouds.openstack.glance.v1_0.domain.ImageDetails;
import org.jclouds.openstack.glance.v1_0.features.ImageApi;
import org.jclouds.openstack.glance.v1_0.functions.internal.ParseImageDetails.Images;
import org.jclouds.openstack.v2_0.domain.PaginatedCollection;
import org.jclouds.openstack.v2_0.domain.Link;
import com.google.common.annotations.Beta;
import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.inject.TypeLiteral;
import org.jclouds.openstack.v2_0.options.PaginationOptions;
/**
* boiler plate until we determine a better way
*/
@Beta
@Singleton
public class ParseImageDetails extends ParseJson<Images> {
static class Images extends PaginatedCollection<ImageDetails> {
@ConstructorProperties({ "images", "images_links" })
protected Images(Iterable<ImageDetails> images, Iterable<Link> images_links) {
super(images, images_links);
}
}
@Inject
public ParseImageDetails(Json json) {
super(json, TypeLiteral.get(Images.class));
}
public static class ToPagedIterable extends Arg0ToPagedIterable.FromCaller<ImageDetails, ToPagedIterable> {
private final GlanceApi api;
@Inject
protected ToPagedIterable(GlanceApi api) {
this.api = checkNotNull(api, "api");
}
@Override
protected Function<Object, IterableWithMarker<ImageDetails>> markerToNextForArg0(Optional<Object> arg0) {
String zone = arg0.isPresent() ? arg0.get().toString() : null;
final ImageApi imageApi = api.getImageApiForZone(zone);
return new Function<Object, IterableWithMarker<ImageDetails>>() {
@SuppressWarnings("unchecked")
@Override
public IterableWithMarker<ImageDetails> apply(Object input) {
PaginationOptions paginationOptions = PaginationOptions.class.cast(input);
Collection<String> markers = paginationOptions.buildQueryParameters().get("marker");
if (!markers.isEmpty()) {
return IterableWithMarker.class.cast(imageApi.listInDetail(marker(getOnlyElement(markers))));
}
else {
return IterableWithMarkers.EMPTY;
}
}
@Override
public String toString() {
return "listInDetail()";
}
};
}
}
}