org.jclouds.gogrid.compute.functions.ServerToNodeMetadata.java Source code

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

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/*
 * 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.gogrid.compute.functions;

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

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.NodeMetadata.Status;
import org.jclouds.compute.functions.GroupNamingConvention;
import org.jclouds.domain.Location;
import org.jclouds.gogrid.domain.Server;
import org.jclouds.gogrid.domain.ServerState;
import org.jclouds.location.predicates.LocationPredicates;
import org.jclouds.logging.Logger;

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

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

    @Resource
    protected Logger logger = Logger.NULL;
    private final Map<ServerState, Status> serverStateToNodeStatus;
    private final Supplier<Set<? extends Image>> images;
    private final Supplier<Set<? extends Hardware>> hardwares;
    private final Supplier<Set<? extends Location>> locations;
    private final GroupNamingConvention nodeNamingConvention;

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

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

        @Override
        public boolean apply(Image input) {
            return input.getProviderId().equals(instance.getImage().getId() + "") && (input.getLocation() == null
                    || input.getLocation().getId().equals(instance.getDatacenter().getId() + ""));
        }
    }

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

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

        @Override
        public boolean apply(Hardware input) {
            return input.getRam() == Integer.parseInt(instance.getRam().getName().replaceAll("[^0-9]", ""));
        }
    }

    @Inject
    ServerToNodeMetadata(Map<ServerState, Status> serverStateToNodeStatus,
            @Memoized Supplier<Set<? extends Image>> images, @Memoized Supplier<Set<? extends Hardware>> hardwares,
            @Memoized Supplier<Set<? extends Location>> locations, GroupNamingConvention.Factory namingConvention) {
        this.nodeNamingConvention = checkNotNull(namingConvention, "namingConvention").createWithoutPrefix();
        this.serverStateToNodeStatus = checkNotNull(serverStateToNodeStatus, "serverStateToNodeStatus");
        this.images = checkNotNull(images, "images");
        this.hardwares = checkNotNull(hardwares, "hardwares");
        this.locations = checkNotNull(locations, "locations");
    }

    @Override
    public NodeMetadata apply(Server from) {
        NodeMetadataBuilder builder = new NodeMetadataBuilder();
        builder.ids(from.getId() + "");
        builder.name(from.getName());
        Location location = Iterables.find(locations.get(),
                LocationPredicates.idEquals(from.getDatacenter().getId() + ""));
        builder.location(location);
        builder.group(nodeNamingConvention.groupInUniqueNameOrNull(from.getName()));
        builder.hardware(parseHardware(from));
        builder.imageId(from.getImage().getId() + "");

        Image image = parseImage(from);
        if (image != null)
            builder.operatingSystem(image.getOperatingSystem());

        builder.status(serverStateToNodeStatus.get(from.getState()));
        builder.publicAddresses(ImmutableSet.of(from.getIp().getIp()));
        return builder.build();
    }

    protected Image parseImage(Server from) {
        Image image = null;
        try {
            image = Iterables.find(images.get(), new FindImageForServer(from));
        } catch (NoSuchElementException e) {
            logger.debug("could not find a matching image for server %s", from);
        }
        return image;
    }

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