org.jclouds.rackspace.cloudservers.compute.functions.ServerToNodeMetadata.java Source code

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Here is the source code for org.jclouds.rackspace.cloudservers.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.rackspace.cloudservers.compute.functions;

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

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.Hardware;
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.domain.LocationScope;
import org.jclouds.domain.internal.LocationImpl;
import org.jclouds.logging.Logger;
import org.jclouds.rackspace.cloudservers.domain.Server;
import org.jclouds.rackspace.cloudservers.domain.ServerStatus;

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> {
    protected final Supplier<Location> location;
    protected final Map<String, Credentials> credentialStore;
    protected final Map<ServerStatus, NodeState> serverToNodeState;
    protected final Supplier<Set<? extends Image>> images;
    protected final Supplier<Set<? extends Hardware>> hardwares;

    @Resource
    protected Logger logger = Logger.NULL;

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

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

        @Override
        public boolean apply(Image input) {
            return input.getProviderId().equals(instance.getImageId() + "");
        }
    }

    private static class FindHardwareForServer implements Predicate<Hardware> {
        private final Server instance;

        private FindHardwareForServer(Server instance) {
            this.instance = instance;
        }

        @Override
        public boolean apply(Hardware input) {
            return input.getProviderId().equals(instance.getFlavorId() + "");
        }
    }

    @Inject
    ServerToNodeMetadata(Map<ServerStatus, NodeState> serverStateToNodeState,
            Map<String, Credentials> credentialStore, @Memoized Supplier<Set<? extends Image>> images,
            Supplier<Location> location, @Memoized Supplier<Set<? extends Hardware>> hardwares) {
        this.serverToNodeState = checkNotNull(serverStateToNodeState, "serverStateToNodeState");
        this.credentialStore = checkNotNull(credentialStore, "credentialStore");
        this.images = checkNotNull(images, "images");
        this.location = checkNotNull(location, "location");
        this.hardwares = checkNotNull(hardwares, "hardwares");
    }

    @Override
    public NodeMetadata apply(Server from) {
        NodeMetadataBuilder builder = new NodeMetadataBuilder();
        builder.ids(from.getId() + "");
        builder.name(from.getName());
        builder.location(new LocationImpl(LocationScope.HOST, from.getHostId(), from.getHostId(), location.get()));
        builder.userMetadata(from.getMetadata());
        builder.tag(parseTagFromName(from.getName()));
        builder.imageId(from.getImageId() + "");
        builder.operatingSystem(parseOperatingSystem(from));
        builder.hardware(parseHardware(from));
        builder.state(serverToNodeState.get(from.getStatus()));
        builder.publicAddresses(from.getAddresses().getPublicAddresses());
        builder.privateAddresses(from.getAddresses().getPrivateAddresses());
        builder.credentials(credentialStore.get("node#" + from.getId()));
        return builder.build();
    }

    protected Hardware parseHardware(Server from) {
        try {
            return Iterables.find(hardwares.get(), new FindHardwareForServer(from));
        } catch (NoSuchElementException e) {
            logger.warn("could not find a matching hardware for server %s", from);
        }
        return null;
    }

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