org.jclouds.openstack.nova.compute.strategy.NovaGetNodeMetadataStrategy Maven / Gradle / Ivy

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jclouds components to access an implementation of OpenStack Nova

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/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.openstack.nova.compute.strategy;

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

import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.strategy.GetNodeMetadataStrategy;
import org.jclouds.openstack.nova.NovaClient;
import org.jclouds.openstack.nova.domain.Server;

import com.google.common.base.Function;

/**
 * @author Adrian Cole
 */
@Singleton
public class NovaGetNodeMetadataStrategy implements GetNodeMetadataStrategy {

   private final NovaClient client;
   private final Function serverToNodeMetadata;

   @Inject
   protected NovaGetNodeMetadataStrategy(NovaClient client,
            Function serverToNodeMetadata) {
      this.client = client;
      this.serverToNodeMetadata = serverToNodeMetadata;
   }

   @Override
   public NodeMetadata getNode(String id) {
      int serverId = Integer.parseInt(id);
      Server server = client.getServer(serverId);
      return server == null ? null : serverToNodeMetadata.apply(server);
   }
}