Java tutorial
/* * 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.glesys.compute.functions; import static com.google.common.base.Charsets.UTF_8; import static com.google.common.base.Preconditions.checkNotNull; import static com.google.common.base.Preconditions.checkState; import static com.google.common.base.Strings.isNullOrEmpty; import static com.google.common.io.BaseEncoding.base16; import static org.jclouds.compute.util.ComputeServiceUtils.addMetadataAndParseTagsFromCommaDelimitedValue; import static org.jclouds.location.predicates.LocationPredicates.idEquals; import java.util.Map; import java.util.NoSuchElementException; import java.util.Set; import javax.annotation.Resource; import javax.inject.Inject; import javax.inject.Named; import javax.inject.Singleton; import org.jclouds.collect.Memoized; import org.jclouds.compute.domain.HardwareBuilder; import org.jclouds.compute.domain.Image; import org.jclouds.compute.domain.NodeMetadata; import org.jclouds.compute.domain.NodeMetadata.Status; import org.jclouds.compute.domain.NodeMetadataBuilder; import org.jclouds.compute.domain.OperatingSystem; import org.jclouds.compute.domain.Processor; import org.jclouds.compute.domain.Volume; import org.jclouds.compute.domain.internal.VolumeImpl; import org.jclouds.compute.functions.GroupNamingConvention; import org.jclouds.compute.reference.ComputeServiceConstants; import org.jclouds.domain.Location; import org.jclouds.glesys.domain.Ip; import org.jclouds.glesys.domain.ServerDetails; import org.jclouds.logging.Logger; import org.jclouds.util.InetAddresses2.IsPrivateIPAddress; import com.google.common.base.Function; import com.google.common.base.Predicate; import com.google.common.base.Predicates; import com.google.common.base.Splitter; import com.google.common.base.Strings; import com.google.common.base.Supplier; import com.google.common.collect.FluentIterable; import com.google.common.collect.ImmutableList; import com.google.common.collect.ImmutableMap; import com.google.common.collect.Iterables; /** * @author Adrian Cole */ @Singleton public class ServerDetailsToNodeMetadata implements Function<ServerDetails, NodeMetadata> { @Resource @Named(ComputeServiceConstants.COMPUTE_LOGGER) protected Logger logger = Logger.NULL; public static final Map<ServerDetails.State, Status> serverStateToNodeStatus = ImmutableMap.<ServerDetails.State, Status>builder() .put(ServerDetails.State.STOPPED, Status.SUSPENDED).put(ServerDetails.State.LOCKED, Status.PENDING) .put(ServerDetails.State.RUNNING, Status.RUNNING) .put(ServerDetails.State.UNRECOGNIZED, Status.UNRECOGNIZED).build(); protected final Supplier<Set<? extends Image>> images; protected final Supplier<Set<? extends Location>> locations; protected final GroupNamingConvention nodeNamingConvention; private static class FindImageForServer implements Predicate<Image> { private final ServerDetails instance; private FindImageForServer(ServerDetails instance) { this.instance = instance; } @Override public boolean apply(Image input) { return input.getProviderId().equals(instance.getTemplateName()); } } @Inject ServerDetailsToNodeMetadata(@Memoized Supplier<Set<? extends Location>> locations, @Memoized Supplier<Set<? extends Image>> images, GroupNamingConvention.Factory namingConvention) { this.nodeNamingConvention = checkNotNull(namingConvention, "namingConvention").createWithoutPrefix(); this.locations = checkNotNull(locations, "locations"); this.images = checkNotNull(images, "images"); } @Override public NodeMetadata apply(ServerDetails from) { NodeMetadataBuilder builder = new NodeMetadataBuilder(); builder.ids(from.getId() + ""); builder.name(from.getHostname()); builder.hostname(from.getHostname()); Location location = FluentIterable.from(locations.get()).firstMatch(idEquals(from.getDatacenter())) .orNull(); checkState(location != null, "no location matched ServerDetails %s", from); builder.group(nodeNamingConvention.groupInUniqueNameOrNull(from.getHostname())); // TODO: get glesys to stop stripping out equals and commas! if (!isNullOrEmpty(from.getDescription()) && from.getDescription().matches("^[0-9A-Fa-f]+$")) { String decoded = new String(base16().lowerCase().decode(from.getDescription()), UTF_8); addMetadataAndParseTagsFromCommaDelimitedValue(builder, Splitter.on('\n').withKeyValueSeparator("=").split(decoded)); } builder.imageId(from.getTemplateName() + ""); builder.operatingSystem(parseOperatingSystem(from)); builder.hardware(new HardwareBuilder().ids(from.getId() + "").ram(from.getMemorySizeMB()) .processors(ImmutableList.of(new Processor(from.getCpuCores(), 1.0))) .volumes(ImmutableList.<Volume>of(new VolumeImpl((float) from.getDiskSizeGB(), true, true))) .hypervisor(from.getPlatform()).build()); builder.status(serverStateToNodeStatus.get(from.getState())); Iterable<String> addresses = Iterables .filter(Iterables.transform(from.getIps(), new Function<Ip, String>() { @Override public String apply(Ip arg0) { return Strings.emptyToNull(arg0.getIp()); } }), Predicates.notNull()); builder.publicAddresses(Iterables.filter(addresses, Predicates.not(IsPrivateIPAddress.INSTANCE))); builder.privateAddresses(Iterables.filter(addresses, IsPrivateIPAddress.INSTANCE)); return builder.build(); } protected OperatingSystem parseOperatingSystem(ServerDetails from) { try { return Iterables.find(images.get(), new FindImageForServer(from)).getOperatingSystem(); } catch (NoSuchElementException e) { logger.debug("could not find a matching image for server %s", from); } return null; } }