Package org.jclouds.karaf.commands.compute

Source Code of org.jclouds.karaf.commands.compute.GroupDestroyCommand

/*
* 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.karaf.commands.compute;

import com.google.common.base.Predicate;
import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.javax.annotation.Nullable;
import org.jclouds.karaf.core.Constants;
import org.jclouds.karaf.utils.ServiceHelper;

import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

/**
* @author <a href="mailto:gnodet[at]gmail.com">Guillaume Nodet (gnodet)</a>
*/
@Command(scope = "jclouds", name = "group-destroy", description = "Destroys a group of nodes.")
public class GroupDestroyCommand extends ComputeCommandWithOptions {

   @Argument(index = 0, name = "group", description = "The groups of nodes to destroy.", required = true, multiValued = true)
   private List<String> groups;

   @Override
   protected Object doExecute() throws Exception {
      ComputeService service = getComputeService();
      if (service == null) {
         System.out.println("Failed to find or create a compute service.");
         return null;
      }
      Set<NodeMetadata> aggregatedMetadata = new LinkedHashSet<NodeMetadata>();

      for (final String group : groups) {
         Set<? extends NodeMetadata> nodeMetadatas = service.destroyNodesMatching(new Predicate<NodeMetadata>() {
            @Override
            public boolean apply(@Nullable NodeMetadata input) {
               return input.getGroup().contains(group);
            }
         });

         for (NodeMetadata node : nodeMetadatas) {
           for (String cacheKey : ServiceHelper.findCacheKeysForService(service)) {
            cacheProvider.getProviderCacheForType(Constants.ACTIVE_NODE_CACHE).remove(cacheKey, node.getId());
            cacheProvider.getProviderCacheForType(Constants.INACTIVE_NODE_CACHE).remove(cacheKey, node.getId());
            cacheProvider.getProviderCacheForType(Constants.SUSPENDED_NODE_CACHE).remove(cacheKey, node.getId());
            aggregatedMetadata.add(node);
           }
         }
      }

      if (!aggregatedMetadata.isEmpty()) {
         System.out.println("Destroyed nodes:");
         printNodes(service, aggregatedMetadata,  System.out);
      }

      return null;
   }
}
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