| 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.ec2.compute.functions; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import java.util.List; |
| 24 | import java.util.Map; |
| 25 | import java.util.Map.Entry; |
| 26 | import java.util.NoSuchElementException; |
| 27 | import java.util.Set; |
| 28 | |
| 29 | import javax.annotation.Resource; |
| 30 | import javax.inject.Inject; |
| 31 | import javax.inject.Singleton; |
| 32 | |
| 33 | import org.jclouds.ec2.compute.domain.RegionAndName; |
| 34 | import org.jclouds.ec2.domain.BlockDevice; |
| 35 | import org.jclouds.ec2.domain.InstanceState; |
| 36 | import org.jclouds.ec2.domain.RootDeviceType; |
| 37 | import org.jclouds.ec2.domain.RunningInstance; |
| 38 | import org.jclouds.collect.Memoized; |
| 39 | import org.jclouds.compute.domain.Hardware; |
| 40 | import org.jclouds.compute.domain.HardwareBuilder; |
| 41 | import org.jclouds.compute.domain.Image; |
| 42 | import org.jclouds.compute.domain.NodeMetadata; |
| 43 | import org.jclouds.compute.domain.NodeMetadataBuilder; |
| 44 | import org.jclouds.compute.domain.NodeState; |
| 45 | import org.jclouds.compute.domain.Volume; |
| 46 | import org.jclouds.compute.domain.internal.VolumeImpl; |
| 47 | import org.jclouds.domain.Credentials; |
| 48 | import org.jclouds.domain.Location; |
| 49 | import org.jclouds.logging.Logger; |
| 50 | import org.jclouds.util.NullSafeCollections; |
| 51 | |
| 52 | import com.google.common.annotations.VisibleForTesting; |
| 53 | import com.google.common.base.Function; |
| 54 | import com.google.common.base.Predicate; |
| 55 | import com.google.common.base.Supplier; |
| 56 | import com.google.common.collect.Iterables; |
| 57 | import com.google.common.collect.Lists; |
| 58 | |
| 59 | /** |
| 60 | * @author Adrian Cole |
| 61 | */ |
| 62 | @Singleton |
| 63 | public class RunningInstanceToNodeMetadata implements Function<RunningInstance, NodeMetadata> { |
| 64 | |
| 65 | @Resource |
| 66 | protected Logger logger = Logger.NULL; |
| 67 | |
| 68 | protected final Supplier<Set<? extends Location>> locations; |
| 69 | protected final Supplier<Set<? extends Hardware>> hardware; |
| 70 | protected final Map<RegionAndName, Image> instanceToImage; |
| 71 | protected final Map<String, Credentials> credentialStore; |
| 72 | protected final Map<InstanceState, NodeState> instanceToNodeState; |
| 73 | |
| 74 | @Inject |
| 75 | protected RunningInstanceToNodeMetadata(Map<InstanceState, NodeState> instanceToNodeState, |
| 76 | Map<String, Credentials> credentialStore, Map<RegionAndName, Image> instanceToImage, |
| 77 | @Memoized Supplier<Set<? extends Location>> locations, @Memoized Supplier<Set<? extends Hardware>> hardware) { |
| 78 | this.locations = checkNotNull(locations, "locations"); |
| 79 | this.hardware = checkNotNull(hardware, "hardware"); |
| 80 | this.instanceToImage = checkNotNull(instanceToImage, "instanceToImage"); |
| 81 | this.instanceToNodeState = checkNotNull(instanceToNodeState, "instanceToNodeState"); |
| 82 | this.credentialStore = checkNotNull(credentialStore, "credentialStore"); |
| 83 | } |
| 84 | |
| 85 | @Override |
| 86 | public NodeMetadata apply(RunningInstance instance) { |
| 87 | if (instance == null || instance.getId() == null) |
| 88 | return null; |
| 89 | NodeMetadataBuilder builder = new NodeMetadataBuilder(); |
| 90 | builder.providerId(instance.getId()); |
| 91 | builder.id(instance.getRegion() + "/" + instance.getId()); |
| 92 | String group = getGroupForInstance(instance); |
| 93 | builder.group(group); |
| 94 | addCredentialsForInstance(builder, instance); |
| 95 | builder.state(instanceToNodeState.get(instance.getInstanceState())); |
| 96 | builder.publicAddresses(NullSafeCollections.nullSafeSet(instance.getIpAddress())); |
| 97 | builder.privateAddresses(NullSafeCollections.nullSafeSet(instance.getPrivateIpAddress())); |
| 98 | builder.hardware(parseHardware(instance)); |
| 99 | Location location = getLocationForAvailabilityZoneOrRegion(instance); |
| 100 | builder.location(location); |
| 101 | builder.imageId(instance.getRegion() + "/" + instance.getImageId()); |
| 102 | |
| 103 | // extract the operating system from the image |
| 104 | RegionAndName regionAndName = new RegionAndName(instance.getRegion(), instance.getImageId()); |
| 105 | try { |
| 106 | Image image = instanceToImage.get(regionAndName); |
| 107 | if (image != null) |
| 108 | builder.operatingSystem(image.getOperatingSystem()); |
| 109 | } catch (NullPointerException e) { |
| 110 | // The instanceToImage Map may throw NullPointerException (actually subclass |
| 111 | // NullOutputException) if the |
| 112 | // computing Function returns a null value. |
| 113 | // |
| 114 | // See the following for more information: |
| 115 | // MapMaker.makeComputingMap() |
| 116 | // RegionAndIdToImage.apply() |
| 117 | } |
| 118 | |
| 119 | return builder.build(); |
| 120 | } |
| 121 | |
| 122 | protected void addCredentialsForInstance(NodeMetadataBuilder builder, RunningInstance instance) { |
| 123 | builder.credentials(credentialStore.get("node#" + instance.getRegion() + "/" + instance.getId())); |
| 124 | } |
| 125 | |
| 126 | protected Hardware parseHardware(final RunningInstance instance) { |
| 127 | Hardware hardware = getHardwareForInstance(instance); |
| 128 | |
| 129 | if (hardware != null) { |
| 130 | hardware = HardwareBuilder.fromHardware(hardware).volumes(addEBS(instance, hardware.getVolumes())).build(); |
| 131 | } |
| 132 | return hardware; |
| 133 | } |
| 134 | |
| 135 | @VisibleForTesting |
| 136 | static List<Volume> addEBS(final RunningInstance instance, Iterable<? extends Volume> volumes) { |
| 137 | Iterable<Volume> ebsVolumes = Iterables.transform(instance.getEbsBlockDevices().entrySet(), |
| 138 | new Function<Entry<String, BlockDevice>, Volume>() { |
| 139 | |
| 140 | @Override |
| 141 | public Volume apply(Entry<String, BlockDevice> from) { |
| 142 | return new VolumeImpl(from.getValue().getVolumeId(), Volume.Type.SAN, null, from.getKey(), |
| 143 | instance.getRootDeviceName() != null |
| 144 | && instance.getRootDeviceName().equals(from.getKey()), true); |
| 145 | } |
| 146 | }); |
| 147 | |
| 148 | if (instance.getRootDeviceType() == RootDeviceType.EBS) { |
| 149 | volumes = Iterables.filter(volumes, new Predicate<Volume>() { |
| 150 | |
| 151 | @Override |
| 152 | public boolean apply(Volume input) { |
| 153 | return !input.isBootDevice(); |
| 154 | } |
| 155 | |
| 156 | }); |
| 157 | |
| 158 | } |
| 159 | return Lists.newArrayList(Iterables.concat(volumes, ebsVolumes)); |
| 160 | |
| 161 | } |
| 162 | |
| 163 | @VisibleForTesting |
| 164 | String getGroupForInstance(final RunningInstance instance) { |
| 165 | String group = null; |
| 166 | try { |
| 167 | group = Iterables.getOnlyElement(Iterables.filter(instance.getGroupIds(), new Predicate<String>() { |
| 168 | |
| 169 | @Override |
| 170 | public boolean apply(String input) { |
| 171 | return input.startsWith("jclouds#") && input.endsWith("#" + instance.getRegion()); |
| 172 | } |
| 173 | |
| 174 | })).substring(8).replaceAll("#" + instance.getRegion() + "$", ""); |
| 175 | } catch (NoSuchElementException e) { |
| 176 | logger.debug("no group parsed from %s's security groups: %s", instance.getId(), instance.getGroupIds()); |
| 177 | } catch (IllegalArgumentException e) { |
| 178 | logger.debug("too many groups match %s; %s's security groups: %s", "jclouds#", instance.getId(), instance |
| 179 | .getGroupIds()); |
| 180 | } |
| 181 | return group; |
| 182 | } |
| 183 | |
| 184 | @VisibleForTesting |
| 185 | Hardware getHardwareForInstance(final RunningInstance instance) { |
| 186 | try { |
| 187 | return Iterables.find(hardware.get(), new Predicate<Hardware>() { |
| 188 | |
| 189 | @Override |
| 190 | public boolean apply(Hardware input) { |
| 191 | return input.getId().equals(instance.getInstanceType()); |
| 192 | } |
| 193 | |
| 194 | }); |
| 195 | } catch (NoSuchElementException e) { |
| 196 | logger.debug("couldn't match instance type %s in: %s", instance.getInstanceType(), hardware.get()); |
| 197 | return null; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | private Location getLocationForAvailabilityZoneOrRegion(final RunningInstance instance) { |
| 202 | Location location = findLocationWithId(instance.getAvailabilityZone()); |
| 203 | if (location == null) |
| 204 | location = findLocationWithId(instance.getRegion()); |
| 205 | return location; |
| 206 | } |
| 207 | |
| 208 | private Location findLocationWithId(final String locationId) { |
| 209 | if (locationId == null) |
| 210 | return null; |
| 211 | try { |
| 212 | Location location = Iterables.find(locations.get(), new Predicate<Location>() { |
| 213 | |
| 214 | @Override |
| 215 | public boolean apply(Location input) { |
| 216 | return input.getId().equals(locationId); |
| 217 | } |
| 218 | |
| 219 | }); |
| 220 | return location; |
| 221 | |
| 222 | } catch (NoSuchElementException e) { |
| 223 | logger.debug("couldn't match instance location %s in: %s", locationId, locations.get()); |
| 224 | return null; |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | } |