org.jclouds.aws.ec2.domain.Reservation.java Source code

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Here is the source code for org.jclouds.aws.ec2.domain.Reservation.java

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. <info@cloudconscious.com>
 *
 * ====================================================================
 * Licensed 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.aws.ec2.domain;

import static com.google.common.base.Preconditions.checkNotNull;

import java.util.LinkedHashSet;
import java.util.Set;

import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import com.google.inject.internal.Nullable;

/**
 * 
 * @see <a href="http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/ApiReference-ItemType-ReservationInfoType.html"
 *      />
 * @author Adrian Cole
 */
public class Reservation<T extends RunningInstance> extends LinkedHashSet<T>
        implements Comparable<Reservation<T>>, Set<T> {

    /** The serialVersionUID */
    private static final long serialVersionUID = -9051777593518861395L;
    private final String region;
    private final Set<String> groupIds = Sets.newLinkedHashSet();
    private final @Nullable String ownerId;
    private final @Nullable String requesterId;
    private final @Nullable String reservationId;

    public Reservation(String region, Iterable<String> groupIds, Iterable<T> instances, @Nullable String ownerId,
            @Nullable String requesterId, @Nullable String reservationId) {
        this.region = checkNotNull(region, "region");
        Iterables.addAll(this.groupIds, checkNotNull(groupIds, "groupIds"));
        Iterables.addAll(this, checkNotNull(instances, "instances"));
        this.ownerId = ownerId;
        this.requesterId = requesterId;
        this.reservationId = reservationId;
    }

    /**
     * Instances are tied to Availability Zones. However, the instance ID is tied to the Region.
     */
    public String getRegion() {
        return region;
    }

    public int compareTo(Reservation<T> o) {
        return (this == o) ? 0 : getReservationId().compareTo(o.getReservationId());
    }

    /**
     * Names of the security groups.
     */
    public Set<String> getGroupIds() {
        return groupIds;
    }

    /**
     * AWS Access Key ID of the user who owns the reservation.
     */
    public String getOwnerId() {
        return ownerId;
    }

    /**
     * ID of the requester.
     */
    public String getRequesterId() {
        return requesterId;
    }

    /**
     * Unique ID of the reservation.
     */
    public String getReservationId() {
        return reservationId;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((groupIds == null) ? 0 : groupIds.hashCode());
        result = prime * result + ((ownerId == null) ? 0 : ownerId.hashCode());
        result = prime * result + ((region == null) ? 0 : region.hashCode());
        result = prime * result + ((requesterId == null) ? 0 : requesterId.hashCode());
        result = prime * result + ((reservationId == null) ? 0 : reservationId.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (!super.equals(obj))
            return false;
        if (getClass() != obj.getClass())
            return false;
        Reservation<?> other = (Reservation<?>) obj;
        if (groupIds == null) {
            if (other.groupIds != null)
                return false;
        } else if (!groupIds.equals(other.groupIds))
            return false;
        if (ownerId == null) {
            if (other.ownerId != null)
                return false;
        } else if (!ownerId.equals(other.ownerId))
            return false;
        if (region == null) {
            if (other.region != null)
                return false;
        } else if (!region.equals(other.region))
            return false;
        if (requesterId == null) {
            if (other.requesterId != null)
                return false;
        } else if (!requesterId.equals(other.requesterId))
            return false;
        if (reservationId == null) {
            if (other.reservationId != null)
                return false;
        } else if (!reservationId.equals(other.reservationId))
            return false;
        return true;
    }

}