org.jclouds.abiquo.config.AbiquoHttpApiModule.java Source code

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Here is the source code for org.jclouds.abiquo.config.AbiquoHttpApiModule.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.abiquo.config;

import static org.jclouds.Constants.PROPERTY_SESSION_INTERVAL;
import static org.jclouds.abiquo.domain.DomainWrapper.wrap;

import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;

import javax.inject.Named;

import org.jclouds.abiquo.AbiquoApi;
import org.jclouds.abiquo.domain.enterprise.Enterprise;
import org.jclouds.abiquo.domain.enterprise.User;
import org.jclouds.abiquo.domain.infrastructure.Datacenter;
import org.jclouds.abiquo.handlers.AbiquoErrorHandler;
import org.jclouds.collect.Memoized;
import org.jclouds.http.HttpErrorHandler;
import org.jclouds.http.annotation.ClientError;
import org.jclouds.http.annotation.Redirection;
import org.jclouds.http.annotation.ServerError;
import org.jclouds.rest.ApiContext;
import org.jclouds.rest.AuthorizationException;
import org.jclouds.rest.ConfiguresHttpApi;
import org.jclouds.rest.config.HttpApiModule;
import org.jclouds.rest.suppliers.MemoizedRetryOnTimeOutButNotOnAuthorizationExceptionSupplier;

import com.google.common.base.Function;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.Maps;
import com.google.inject.Provides;
import com.google.inject.Singleton;

/**
 * Configures the Abiquo connection.
 * 
 * @author Ignasi Barrera
 */
@ConfiguresHttpApi
public class AbiquoHttpApiModule extends HttpApiModule<AbiquoApi> {

    @Override
    protected void bindErrorHandlers() {
        bind(HttpErrorHandler.class).annotatedWith(Redirection.class).to(AbiquoErrorHandler.class);
        bind(HttpErrorHandler.class).annotatedWith(ClientError.class).to(AbiquoErrorHandler.class);
        bind(HttpErrorHandler.class).annotatedWith(ServerError.class).to(AbiquoErrorHandler.class);
    }

    @Provides
    @Singleton
    @Memoized
    public Supplier<User> getCurrentUser(final AtomicReference<AuthorizationException> authException,
            @Named(PROPERTY_SESSION_INTERVAL) final long seconds, final ApiContext<AbiquoApi> context) {
        return MemoizedRetryOnTimeOutButNotOnAuthorizationExceptionSupplier.create(authException,
                new Supplier<User>() {
                    @Override
                    public User get() {
                        return wrap(context, User.class, context.getApi().getAdminApi().getCurrentUser());
                    }
                }, seconds, TimeUnit.SECONDS);
    }

    @Provides
    @Singleton
    @Memoized
    public Supplier<Enterprise> getCurrentEnterprise(final AtomicReference<AuthorizationException> authException,
            @Named(PROPERTY_SESSION_INTERVAL) final long seconds, @Memoized final Supplier<User> currentUser) {
        return MemoizedRetryOnTimeOutButNotOnAuthorizationExceptionSupplier.create(authException,
                new Supplier<Enterprise>() {
                    @Override
                    public Enterprise get() {
                        return currentUser.get().getEnterprise();
                    }
                }, seconds, TimeUnit.SECONDS);
    }

    @Provides
    @Singleton
    @Memoized
    public Supplier<Map<Integer, Datacenter>> getAvailableRegionsIndexedById(
            final AtomicReference<AuthorizationException> authException,
            @Named(PROPERTY_SESSION_INTERVAL) final long seconds,
            @Memoized final Supplier<Enterprise> currentEnterprise) {
        Supplier<Map<Integer, Datacenter>> availableRegionsMapSupplier = Suppliers
                .compose(new Function<Iterable<Datacenter>, Map<Integer, Datacenter>>() {
                    @Override
                    public Map<Integer, Datacenter> apply(final Iterable<Datacenter> datacenters) {
                        // Index available regions by id
                        return Maps.uniqueIndex(datacenters, new Function<Datacenter, Integer>() {
                            @Override
                            public Integer apply(final Datacenter input) {
                                return input.getId();
                            }
                        });
                    }
                }, new Supplier<Iterable<Datacenter>>() {
                    @Override
                    public Iterable<Datacenter> get() {
                        // Get the list of regions available for the user's tenant
                        return currentEnterprise.get().listAllowedDatacenters();
                    }
                });

        return MemoizedRetryOnTimeOutButNotOnAuthorizationExceptionSupplier.create(authException,
                availableRegionsMapSupplier, seconds, TimeUnit.SECONDS);
    }
}