| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. 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, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.ec2.compute.functions; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import java.util.concurrent.ConcurrentMap; |
| 24 | import java.util.concurrent.ExecutionException; |
| 25 | |
| 26 | import javax.inject.Inject; |
| 27 | import javax.inject.Singleton; |
| 28 | |
| 29 | import org.jclouds.compute.domain.Image; |
| 30 | import org.jclouds.compute.strategy.PopulateDefaultLoginCredentialsForImageStrategy; |
| 31 | import org.jclouds.domain.Credentials; |
| 32 | import org.jclouds.ec2.compute.domain.RegionAndName; |
| 33 | import org.jclouds.ec2.domain.KeyPair; |
| 34 | import org.jclouds.ec2.domain.RunningInstance; |
| 35 | |
| 36 | import com.google.common.annotations.VisibleForTesting; |
| 37 | import com.google.common.base.Supplier; |
| 38 | import com.google.common.cache.Cache; |
| 39 | import com.google.common.cache.CacheLoader; |
| 40 | |
| 41 | /** |
| 42 | * |
| 43 | * @author Adrian Cole |
| 44 | */ |
| 45 | @Singleton |
| 46 | public class CredentialsForInstance extends CacheLoader<RunningInstance, Credentials> { |
| 47 | private final ConcurrentMap<RegionAndName, KeyPair> credentialsMap; |
| 48 | private final PopulateDefaultLoginCredentialsForImageStrategy credentialProvider; |
| 49 | private final Supplier<Cache<RegionAndName, ? extends Image>> imageMap; |
| 50 | |
| 51 | @Inject |
| 52 | CredentialsForInstance(ConcurrentMap<RegionAndName, KeyPair> credentialsMap, |
| 53 | PopulateDefaultLoginCredentialsForImageStrategy credentialProvider, Supplier<Cache<RegionAndName, ? extends Image>> imageMap) { |
| 54 | this.credentialsMap = checkNotNull(credentialsMap, "credentialsMap"); |
| 55 | this.credentialProvider = checkNotNull(credentialProvider, "credentialProvider"); |
| 56 | this.imageMap = imageMap; |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | public Credentials load(RunningInstance instance) throws ExecutionException { |
| 61 | Credentials credentials = null;// default if no keypair exists |
| 62 | if (instance.getKeyName() != null) { |
| 63 | credentials = new Credentials(getLoginAccountFor(instance), getPrivateKeyOrNull(instance)); |
| 64 | } |
| 65 | return credentials; |
| 66 | } |
| 67 | |
| 68 | @VisibleForTesting |
| 69 | String getPrivateKeyOrNull(RunningInstance instance) throws ExecutionException { |
| 70 | KeyPair keyPair = credentialsMap.get(new RegionAndName(instance.getRegion(), instance.getKeyName())); |
| 71 | return keyPair != null ? keyPair.getKeyMaterial() : null; |
| 72 | } |
| 73 | |
| 74 | @VisibleForTesting |
| 75 | String getLoginAccountFor(RunningInstance from) throws ExecutionException { |
| 76 | return checkNotNull( |
| 77 | credentialProvider.execute(imageMap.get().get(new RegionAndName(from.getRegion(), from.getImageId()))), |
| 78 | "login from image: " + from.getImageId()).identity; |
| 79 | } |
| 80 | } |