| 1 | /** |
| 2 | * |
| 3 | * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com> |
| 4 | * |
| 5 | * ==================================================================== |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * ==================================================================== |
| 18 | */ |
| 19 | package org.jclouds.aws.ec2.predicates; |
| 20 | |
| 21 | import java.util.NoSuchElementException; |
| 22 | |
| 23 | import javax.annotation.Resource; |
| 24 | import javax.inject.Singleton; |
| 25 | |
| 26 | import org.jclouds.aws.ec2.AWSEC2Client; |
| 27 | import org.jclouds.aws.ec2.domain.PlacementGroup; |
| 28 | import org.jclouds.logging.Logger; |
| 29 | import org.jclouds.rest.ResourceNotFoundException; |
| 30 | |
| 31 | import com.google.common.base.Predicate; |
| 32 | import com.google.common.collect.Iterables; |
| 33 | import com.google.inject.Inject; |
| 34 | |
| 35 | /** |
| 36 | * |
| 37 | * |
| 38 | * @author Adrian Cole |
| 39 | */ |
| 40 | @Singleton |
| 41 | public class PlacementGroupAvailable implements Predicate<PlacementGroup> { |
| 42 | |
| 43 | private final AWSEC2Client client; |
| 44 | |
| 45 | @Resource |
| 46 | protected Logger logger = Logger.NULL; |
| 47 | |
| 48 | @Inject |
| 49 | public PlacementGroupAvailable(AWSEC2Client client) { |
| 50 | this.client = client; |
| 51 | } |
| 52 | |
| 53 | public boolean apply(PlacementGroup group) { |
| 54 | logger.trace("looking for state on group %s", group); |
| 55 | try { |
| 56 | group = refresh(group); |
| 57 | logger.trace("%s: looking for group state %s: currently: %s", group.getName(), PlacementGroup.State.AVAILABLE, |
| 58 | group.getState()); |
| 59 | return group.getState() == PlacementGroup.State.AVAILABLE; |
| 60 | } catch (ResourceNotFoundException e) { |
| 61 | return false; |
| 62 | } catch (NoSuchElementException e) { |
| 63 | return false; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | private PlacementGroup refresh(PlacementGroup group) { |
| 68 | return Iterables.getOnlyElement(client.getPlacementGroupServices().describePlacementGroupsInRegion( |
| 69 | group.getRegion(), group.getName())); |
| 70 | } |
| 71 | } |