| 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.compute.strategy.impl; |
| 20 | |
| 21 | import static com.google.common.base.Objects.toStringHelper; |
| 22 | import static com.google.common.base.Preconditions.checkNotNull; |
| 23 | import static com.google.common.collect.Iterables.any; |
| 24 | import static com.google.common.collect.Maps.newLinkedHashMap; |
| 25 | import static com.google.common.collect.Sets.newLinkedHashSet; |
| 26 | import static org.jclouds.concurrent.Futures.compose; |
| 27 | |
| 28 | import java.security.SecureRandom; |
| 29 | import java.util.Map; |
| 30 | import java.util.Set; |
| 31 | import java.util.concurrent.Callable; |
| 32 | import java.util.concurrent.ExecutorService; |
| 33 | import java.util.concurrent.Future; |
| 34 | |
| 35 | import javax.annotation.Resource; |
| 36 | import javax.inject.Inject; |
| 37 | import javax.inject.Named; |
| 38 | import javax.inject.Singleton; |
| 39 | |
| 40 | import org.jclouds.Constants; |
| 41 | import org.jclouds.compute.config.CustomizationResponse; |
| 42 | import org.jclouds.compute.domain.ComputeMetadata; |
| 43 | import org.jclouds.compute.domain.NodeMetadata; |
| 44 | import org.jclouds.compute.domain.Template; |
| 45 | import org.jclouds.compute.reference.ComputeServiceConstants; |
| 46 | import org.jclouds.compute.strategy.CreateNodeWithGroupEncodedIntoName; |
| 47 | import org.jclouds.compute.strategy.CustomizeNodeAndAddToGoodMapOrPutExceptionIntoBadMap; |
| 48 | import org.jclouds.compute.strategy.ListNodesStrategy; |
| 49 | import org.jclouds.compute.strategy.CreateNodesInGroupThenAddToSet; |
| 50 | import org.jclouds.logging.Logger; |
| 51 | |
| 52 | import com.google.common.base.Predicate; |
| 53 | import com.google.common.collect.Multimap; |
| 54 | |
| 55 | /** |
| 56 | * creates futures that correlate to |
| 57 | * |
| 58 | * @author Adrian Cole |
| 59 | */ |
| 60 | @Singleton |
| 61 | public class CreateNodesWithGroupEncodedIntoNameThenAddToSet implements CreateNodesInGroupThenAddToSet { |
| 62 | |
| 63 | private class AddNode implements Callable<NodeMetadata> { |
| 64 | private final String name; |
| 65 | private final String tag; |
| 66 | private final Template template; |
| 67 | |
| 68 | private AddNode(String name, String tag, Template template) { |
| 69 | this.name = checkNotNull(name, "name"); |
| 70 | this.tag = checkNotNull(tag, "tag"); |
| 71 | this.template = checkNotNull(template, "template"); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public NodeMetadata call() throws Exception { |
| 76 | NodeMetadata node = null; |
| 77 | logger.debug(">> adding node location(%s) name(%s) image(%s) hardware(%s)", |
| 78 | template.getLocation().getId(), name, template.getImage().getProviderId(), template.getHardware() |
| 79 | .getProviderId()); |
| 80 | node = addNodeWithTagStrategy.createNodeWithGroupEncodedIntoName(tag, name, template); |
| 81 | logger.debug("<< %s node(%s)", node.getState(), node.getId()); |
| 82 | return node; |
| 83 | } |
| 84 | |
| 85 | public String toString() { |
| 86 | return toStringHelper(this).add("name", name).add("tag", tag).add("template", template).toString(); |
| 87 | } |
| 88 | |
| 89 | } |
| 90 | |
| 91 | @Resource |
| 92 | @Named(ComputeServiceConstants.COMPUTE_LOGGER) |
| 93 | protected Logger logger = Logger.NULL; |
| 94 | protected final CreateNodeWithGroupEncodedIntoName addNodeWithTagStrategy; |
| 95 | protected final ListNodesStrategy listNodesStrategy; |
| 96 | protected final String nodeNamingConvention; |
| 97 | protected final ExecutorService executor; |
| 98 | protected final CustomizeNodeAndAddToGoodMapOrPutExceptionIntoBadMap.Factory customizeNodeAndAddToGoodMapOrPutExceptionIntoBadMapFactory; |
| 99 | |
| 100 | @Inject |
| 101 | protected CreateNodesWithGroupEncodedIntoNameThenAddToSet( |
| 102 | CreateNodeWithGroupEncodedIntoName addNodeWithTagStrategy, |
| 103 | ListNodesStrategy listNodesStrategy, |
| 104 | @Named("NAMING_CONVENTION") String nodeNamingConvention, |
| 105 | @Named(Constants.PROPERTY_USER_THREADS) ExecutorService executor, |
| 106 | CustomizeNodeAndAddToGoodMapOrPutExceptionIntoBadMap.Factory customizeNodeAndAddToGoodMapOrPutExceptionIntoBadMapFactory) { |
| 107 | this.addNodeWithTagStrategy = addNodeWithTagStrategy; |
| 108 | this.listNodesStrategy = listNodesStrategy; |
| 109 | this.nodeNamingConvention = nodeNamingConvention; |
| 110 | this.executor = executor; |
| 111 | this.customizeNodeAndAddToGoodMapOrPutExceptionIntoBadMapFactory = customizeNodeAndAddToGoodMapOrPutExceptionIntoBadMapFactory; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * This implementation gets a list of acceptable node names to encode the tag into, then it |
| 116 | * simultaneously runs the nodes and applies options to them. |
| 117 | */ |
| 118 | @Override |
| 119 | public Map<?, Future<Void>> execute(String tag, int count, Template template, Set<NodeMetadata> goodNodes, |
| 120 | Map<NodeMetadata, Exception> badNodes, Multimap<NodeMetadata, CustomizationResponse> customizationResponses) { |
| 121 | Map<String, Future<Void>> responses = newLinkedHashMap(); |
| 122 | for (String name : getNextNames(tag, template, count)) { |
| 123 | responses.put(name, compose(executor.submit(new AddNode(name, tag, template)), |
| 124 | customizeNodeAndAddToGoodMapOrPutExceptionIntoBadMapFactory.create(template.getOptions(), |
| 125 | goodNodes, badNodes, customizationResponses), executor)); |
| 126 | } |
| 127 | return responses; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Find the next node names that can be used. These will be derived from the tag and the |
| 132 | * template. We will pre-allocate a specified quantity, and attempt to verify that there is no |
| 133 | * name conflict with the current service. |
| 134 | * |
| 135 | * @param tag |
| 136 | * @param count |
| 137 | * @param template |
| 138 | * @return |
| 139 | */ |
| 140 | protected Set<String> getNextNames(final String tag, final Template template, int count) { |
| 141 | Set<String> names = newLinkedHashSet(); |
| 142 | Iterable<? extends ComputeMetadata> currentNodes = listNodesStrategy.listNodes(); |
| 143 | int maxTries = 100; |
| 144 | int currentTries = 0; |
| 145 | while (names.size() < count && currentTries++ < maxTries) { |
| 146 | final String name = getNextName(tag, template); |
| 147 | if (!any(currentNodes, new Predicate<ComputeMetadata>() { |
| 148 | |
| 149 | @Override |
| 150 | public boolean apply(ComputeMetadata input) { |
| 151 | return name.equals(input.getName()); |
| 152 | } |
| 153 | |
| 154 | })) { |
| 155 | names.add(name); |
| 156 | } |
| 157 | } |
| 158 | return names; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Get a name using a random mechanism that still ties all nodes in a tag together. |
| 163 | * |
| 164 | * This implementation will pass the tag and a hex formatted random number to the configured |
| 165 | * naming convention. |
| 166 | * |
| 167 | */ |
| 168 | protected String getNextName(final String tag, final Template template) { |
| 169 | return String.format(nodeNamingConvention, tag, Integer.toHexString(new SecureRandom().nextInt(4095))); |
| 170 | } |
| 171 | |
| 172 | } |