org.jclouds.vcloud.config.DefaultVCloudReferencesModule.java Source code

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Here is the source code for org.jclouds.vcloud.config.DefaultVCloudReferencesModule.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.vcloud.config;

import java.net.URI;
import java.util.Map;

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

import org.jclouds.logging.Logger;
import org.jclouds.vcloud.domain.Catalog;
import org.jclouds.vcloud.domain.ReferenceType;
import org.jclouds.vcloud.endpoints.Org;

import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMap.Builder;
import com.google.inject.AbstractModule;
import com.google.inject.Injector;
import com.google.inject.Provides;
import com.google.inject.TypeLiteral;

/**
 * 
 * @author Adrian Cole
 */
public class DefaultVCloudReferencesModule extends AbstractModule {

    @Override
    protected void configure() {
        bind(new TypeLiteral<Supplier<ReferenceType>>() {
        }).annotatedWith(Org.class).to(DefaultOrgForUser.class);
    }

    @Provides
    @Singleton
    @org.jclouds.vcloud.endpoints.Org
    protected Predicate<ReferenceType> provideDefaultOrgSelector(Injector i) {
        return Predicates.alwaysTrue();
    }

    @Provides
    @org.jclouds.vcloud.endpoints.TasksList
    @Singleton
    protected Supplier<ReferenceType> provideDefaultTasksList(DefaultTasksListForOrg defaultTasksListURIForOrg,
            @org.jclouds.vcloud.endpoints.Org Supplier<ReferenceType> defaultOrg) {
        return Suppliers.compose(defaultTasksListURIForOrg, defaultOrg);
    }

    @Provides
    @org.jclouds.vcloud.endpoints.Catalog
    @Singleton
    protected Supplier<ReferenceType> provideDefaultCatalog(DefaultCatalogForOrg defaultCatalogURIForOrg,
            @org.jclouds.vcloud.endpoints.Org Supplier<ReferenceType> defaultOrg) {
        return Suppliers.compose(defaultCatalogURIForOrg, defaultOrg);
    }

    @Provides
    @Singleton
    @org.jclouds.vcloud.endpoints.Catalog
    protected Predicate<ReferenceType> provideDefaultCatalogSelector(Injector i) {
        return i.getInstance(WriteableCatalog.class);
    }

    @Provides
    @Singleton
    protected Supplier<Map<URI, org.jclouds.vcloud.domain.Catalog>> provideCatalogsById(
            Supplier<Map<String, Map<String, org.jclouds.vcloud.domain.Catalog>>> supplier) {
        return Suppliers.compose(
                new Function<Map<String, Map<String, org.jclouds.vcloud.domain.Catalog>>, Map<URI, org.jclouds.vcloud.domain.Catalog>>() {

                    @Override
                    public Map<URI, Catalog> apply(Map<String, Map<String, Catalog>> arg0) {
                        Builder<URI, Catalog> builder = ImmutableMap.builder();
                        for (Map<String, Catalog> v1 : arg0.values()) {
                            for (Catalog v2 : v1.values()) {
                                builder.put(v2.getHref(), v2);
                            }
                        }
                        return builder.build();
                    }

                }, supplier);
    }

    @Singleton
    public static class WriteableCatalog implements Predicate<ReferenceType> {

        @Resource
        protected Logger logger = Logger.NULL;

        private final Supplier<Map<URI, org.jclouds.vcloud.domain.Catalog>> catalogsByIdSupplier;

        @Inject
        public WriteableCatalog(Supplier<Map<URI, org.jclouds.vcloud.domain.Catalog>> catalogsByIdSupplier) {
            this.catalogsByIdSupplier = catalogsByIdSupplier;
        }

        @Override
        public boolean apply(ReferenceType arg0) {
            // TODO: this is inefficient, calculating the index each time, but
            // shouldn't be added to constructor as the supplier is an expensive
            // call
            Map<URI, Catalog> index = catalogsByIdSupplier.get();
            Catalog catalog = index.get(arg0.getHref());
            if (catalog == null) {
                if (logger.isTraceEnabled())
                    logger.trace("didn't find catalog %s", arg0);
                return false;
            } else
                return !catalog.isReadOnly();
        }
    }

    @Provides
    @org.jclouds.vcloud.endpoints.VDC
    @Singleton
    protected Supplier<ReferenceType> provideDefaultVDC(DefaultVDCForOrg defaultVDCURIForOrg,
            @org.jclouds.vcloud.endpoints.Org Supplier<ReferenceType> defaultOrg) {
        return Suppliers.compose(defaultVDCURIForOrg, defaultOrg);
    }

    @Provides
    @Singleton
    @org.jclouds.vcloud.endpoints.VDC
    protected Predicate<ReferenceType> provideDefaultVDCSelector(Injector i) {
        return Predicates.alwaysTrue();
    }

    @Provides
    @org.jclouds.vcloud.endpoints.Network
    @Singleton
    protected Supplier<ReferenceType> provideDefaultNetwork(DefaultNetworkForVDC defaultNetworkURIForVDC,
            @org.jclouds.vcloud.endpoints.VDC Supplier<ReferenceType> defaultVDC) {
        return Suppliers.compose(defaultNetworkURIForVDC, defaultVDC);
    }

    @Provides
    @Singleton
    @org.jclouds.vcloud.endpoints.Network
    protected Predicate<ReferenceType> provideDefaultNetworkSelector(Injector i) {
        return Predicates.alwaysTrue();
    }
}