org.jclouds.rimuhosting.miro.compute.functions.ServerToNodeMetadata.java Source code

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Here is the source code for org.jclouds.rimuhosting.miro.compute.functions.ServerToNodeMetadata.java

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. <info@cloudconscious.com>
 *
 * ====================================================================
 * 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.jclouds.rimuhosting.miro.compute.functions;

import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.compute.util.ComputeServiceUtils.parseGroupFromName;

import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;

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

import org.jclouds.collect.Memoized;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.domain.NodeMetadataBuilder;
import org.jclouds.compute.domain.NodeState;
import org.jclouds.compute.domain.OperatingSystem;
import org.jclouds.domain.Credentials;
import org.jclouds.domain.Location;
import org.jclouds.logging.Logger;
import org.jclouds.rimuhosting.miro.domain.Server;
import org.jclouds.rimuhosting.miro.domain.internal.RunningState;

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

/**
 * 
 * @author Adrian Cole
 */
@Singleton
public class ServerToNodeMetadata implements Function<Server, NodeMetadata> {

    @Resource
    protected Logger logger = Logger.NULL;
    protected final Map<String, Credentials> credentialStore;
    protected final Supplier<Set<? extends Location>> locations;
    protected final Function<Server, Iterable<String>> getPublicAddresses;
    protected final Map<RunningState, NodeState> runningStateToNodeState;
    protected final Supplier<Set<? extends Image>> images;

    private static class FindImageForServer implements Predicate<Image> {
        private final Location location;
        private final Server instance;

        private FindImageForServer(Location location, Server instance) {
            this.location = location;
            this.instance = instance;
        }

        @Override
        public boolean apply(Image input) {
            return input.getProviderId().equals(instance.getImageId()) && (input.getLocation() == null
                    || input.getLocation().equals(location) || input.getLocation().equals(location.getParent()));
        }
    }

    @Inject
    ServerToNodeMetadata(Function<Server, Iterable<String>> getPublicAddresses,
            @Memoized Supplier<Set<? extends Location>> locations, Map<String, Credentials> credentialStore,
            Map<RunningState, NodeState> runningStateToNodeState, @Memoized Supplier<Set<? extends Image>> images) {
        this.getPublicAddresses = checkNotNull(getPublicAddresses, "serverStateToNodeState");
        this.locations = checkNotNull(locations, "locations");
        this.credentialStore = checkNotNull(credentialStore, "credentialStore");
        this.runningStateToNodeState = checkNotNull(runningStateToNodeState, "serverStateToNodeState");
        this.images = checkNotNull(images, "images");
    }

    @Override
    public NodeMetadata apply(Server from) {
        NodeMetadataBuilder builder = new NodeMetadataBuilder();
        builder.ids(from.getId() + "");
        builder.name(from.getName());
        Location location = findLocationWithId(from.getLocation().getId());
        builder.location(location);
        builder.group(parseGroupFromName(from.getName()));
        builder.imageId(from.getImageId() + "");
        builder.operatingSystem(parseOperatingSystem(from, location));
        builder.hardware(null);// TODO
        builder.state(runningStateToNodeState.get(from.getState()));
        builder.publicAddresses(getPublicAddresses.apply(from));
        builder.credentials(credentialStore.get("node#" + from.getId()));
        return builder.build();
    }

    private Location findLocationWithId(final String locationId) {
        try {
            Location location = Iterables.find(locations.get(), new Predicate<Location>() {

                @Override
                public boolean apply(Location input) {
                    return input.getId().equals(locationId);
                }

            });
            return location;

        } catch (NoSuchElementException e) {
            logger.debug("couldn't match instance location %s in: %s", locationId, locations.get());
            return null;
        }
    }

    protected OperatingSystem parseOperatingSystem(Server from, Location location) {
        try {
            return Iterables.find(images.get(), new FindImageForServer(location, from)).getOperatingSystem();
        } catch (NoSuchElementException e) {
            logger.warn("could not find a matching image for server %s in location %s", from, location);
        }
        return null;
    }
}