/*
* 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.digitalocean.compute.functions;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Iterables.find;
import static com.google.common.collect.Iterables.tryFind;
import static org.jclouds.digitalocean.compute.util.LocationNamingUtils.extractRegionId;
import java.util.Map;
import java.util.Set;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.collect.Memoized;
import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.domain.NodeMetadata.Status;
import org.jclouds.compute.domain.NodeMetadataBuilder;
import org.jclouds.compute.functions.GroupNamingConvention;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.digitalocean.domain.Droplet;
import org.jclouds.domain.Credentials;
import org.jclouds.domain.Location;
import org.jclouds.domain.LoginCredentials;
import org.jclouds.logging.Logger;
import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
/**
* Transforms an {@link Droplet} to the jclouds portable model.
*/
@Singleton
public class DropletToNodeMetadata implements Function<Droplet, NodeMetadata> {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
private final Supplier<Map<String, ? extends Image>> images;
private final Supplier<Map<String, ? extends Hardware>> hardwares;
private final Supplier<Set<? extends Location>> locations;
private final Function<Droplet.Status, Status> toPortableStatus;
private final GroupNamingConvention groupNamingConvention;
private final Map<String, Credentials> credentialStore;
@Inject
DropletToNodeMetadata(Supplier<Map<String, ? extends Image>> images,
Supplier<Map<String, ? extends Hardware>> hardwares, @Memoized Supplier<Set<? extends Location>> locations,
Function<Droplet.Status, Status> toPortableStatus, GroupNamingConvention.Factory groupNamingConvention,
Map<String, Credentials> credentialStore) {
this.images = checkNotNull(images, "images cannot be null");
this.hardwares = checkNotNull(hardwares, "hardwares cannot be null");
this.locations = checkNotNull(locations, "locations cannot be null");
this.toPortableStatus = checkNotNull(toPortableStatus, "toPortableStatus cannot be null");
this.groupNamingConvention = checkNotNull(groupNamingConvention, "groupNamingConvention cannot be null")
.createWithoutPrefix();
this.credentialStore = checkNotNull(credentialStore, "credentialStore cannot be null");
}
@Override
public NodeMetadata apply(Droplet input) {
NodeMetadataBuilder builder = new NodeMetadataBuilder();
builder.ids(String.valueOf(input.getId()));
builder.name(input.getName());
builder.hostname(input.getName());
builder.group(groupNamingConvention.extractGroup(input.getName()));
builder.hardware(getHardware(input.getSizeId()));
builder.location(getLocation(input.getRegionId()));
Optional<? extends Image> image = findImage(input.getImageId());
if (image.isPresent()) {
builder.imageId(image.get().getId());
builder.operatingSystem(image.get().getOperatingSystem());
} else {
logger.info(">> image with id %s for droplet %s was not found. "
+ "This might be because the image that was used to create the droplet has a new id.",
input.getImageId(), input.getId());
}
builder.status(toPortableStatus.apply(input.getStatus()));
builder.backendStatus(input.getStatus().name());
if (input.getIp() != null) {
builder.publicAddresses(ImmutableSet.of(input.getIp()));
}
if (input.getPrivateIp() != null) {
builder.privateAddresses(ImmutableSet.of(input.getPrivateIp()));
}
// DigitalOcean does not provide a way to get the credentials.
// Try to return them from the credential store
Credentials credentials = credentialStore.get("node#" + input.getId());
if (credentials instanceof LoginCredentials) {
builder.credentials(LoginCredentials.class.cast(credentials));
}
return builder.build();
}
protected Optional<? extends Image> findImage(Integer id) {
// Try to find the image by ID in the cache. The cache is indexed by slug (for public images) and by id (for
// private ones).
final String imageId = String.valueOf(id);
Optional<? extends Image> image = Optional.fromNullable(images.get().get(imageId));
if (!image.isPresent()) {
// If it is a public image (indexed by slug) but the "int" form of the id was provided, try to find it in the
// whole list of cached images
image = tryFind(images.get().values(), new Predicate<Image>() {
@Override
public boolean apply(Image input) {
return input.getProviderId().equals(imageId);
}
});
}
return image;
}
protected Hardware getHardware(Integer id) {
// Hardwares are indexed by slug, but the droplet only provides its ID.
final String hardwareId = String.valueOf(id);
return Iterables.find(hardwares.get().values(), new Predicate<Hardware>() {
@Override
public boolean apply(Hardware input) {
return input.getProviderId().equals(hardwareId);
}
});
}
protected Location getLocation(final Integer id) {
return find(locations.get(), new Predicate<Location>() {
@Override
public boolean apply(Location location) {
return id.equals(extractRegionId(location));
}
});
}
}