org.jclouds.trmk.vcloud_0_8.functions.OrgsForLocations.java Source code

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Here is the source code for org.jclouds.trmk.vcloud_0_8.functions.OrgsForLocations.java

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/*
 * 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.trmk.vcloud_0_8.functions;

import static com.google.common.collect.Iterables.filter;
import static com.google.common.collect.Iterables.transform;
import static org.jclouds.concurrent.FutureIterables.transformParallel;

import java.net.URI;

import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.jclouds.Constants;
import org.jclouds.domain.Location;
import org.jclouds.domain.LocationScope;
import org.jclouds.logging.Logger;
import org.jclouds.trmk.vcloud_0_8.TerremarkVCloudAsyncClient;
import org.jclouds.trmk.vcloud_0_8.domain.Org;

import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.Sets;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;

/**
 * @author Adrian Cole
 */
@Singleton
public class OrgsForLocations implements Function<Iterable<? extends Location>, Iterable<? extends Org>> {
    @Resource
    public Logger logger = Logger.NULL;
    private final TerremarkVCloudAsyncClient aclient;
    private final ListeningExecutorService userExecutor;

    @Inject
    OrgsForLocations(TerremarkVCloudAsyncClient aclient,
            @Named(Constants.PROPERTY_USER_THREADS) ListeningExecutorService userExecutor) {
        this.aclient = aclient;
        this.userExecutor = userExecutor;
    }

    /**
     * Zones are assignable, but we want regions. so we look for zones, whose
     * parent is region. then, we use a set to extract the unique set.
     */
    @Override
    public Iterable<? extends Org> apply(Iterable<? extends Location> from) {
        return transformParallel(Sets.newLinkedHashSet(transform(filter(from, new Predicate<Location>() {
            public boolean apply(Location input) {
                return input.getScope() == LocationScope.ZONE;
            }
        }), new Function<Location, URI>() {
            public URI apply(Location from) {
                return URI.create(from.getParent().getId());
            }
        })), new Function<URI, ListenableFuture<? extends Org>>() {
            public ListenableFuture<? extends Org> apply(URI from) {
                return aclient.getOrg(from);
            }
        }, userExecutor, null, logger, "organizations for uris");
    }
}