org.jclouds.gogrid.compute.strategy.GoGridGetNodeMetadataStrategy.java Source code

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Here is the source code for org.jclouds.gogrid.compute.strategy.GoGridGetNodeMetadataStrategy.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.gogrid.compute.strategy;

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

import java.util.NoSuchElementException;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.strategy.GetNodeMetadataStrategy;
import org.jclouds.gogrid.GoGridClient;
import org.jclouds.gogrid.domain.Server;

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

/**
 * 
 * @author Adrian Cole
 */
@Singleton
public class GoGridGetNodeMetadataStrategy implements GetNodeMetadataStrategy {
    private final GoGridClient client;
    private final Function<Server, NodeMetadata> serverToNodeMetadata;

    @Inject
    protected GoGridGetNodeMetadataStrategy(GoGridClient client,
            Function<Server, NodeMetadata> serverToNodeMetadata) {
        this.client = client;
        this.serverToNodeMetadata = serverToNodeMetadata;
    }

    @Override
    public NodeMetadata getNode(String id) {
        try {
            Server server = Iterables
                    .getOnlyElement(client.getServerServices().getServersById(new Long(checkNotNull(id, "id"))));
            return server == null ? null : serverToNodeMetadata.apply(server);
        } catch (NoSuchElementException e) {
            return null;
        }
    }
}