org.apache.aurora.scheduler.HostOffer.java Source code

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Here is the source code for org.apache.aurora.scheduler.HostOffer.java

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/**
 * 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.apache.aurora.scheduler;

import java.time.Instant;
import java.util.Objects;

import com.google.common.base.MoreObjects;
import com.google.common.base.Optional;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;

import org.apache.aurora.scheduler.base.Conversions;
import org.apache.aurora.scheduler.resources.ResourceBag;
import org.apache.aurora.scheduler.storage.entities.IHostAttributes;

import static java.util.Objects.requireNonNull;

import static org.apache.aurora.scheduler.resources.ResourceManager.bagFromMesosResources;
import static org.apache.aurora.scheduler.resources.ResourceManager.getOfferResources;
import static org.apache.mesos.v1.Protos.Offer;

/**
 * An available resource in the cluster.
 */
public class HostOffer {
    private final Offer offer;
    private final IHostAttributes hostAttributes;
    private final LoadingCache<TierInfo, ResourceBag> resourceBagCache;

    public HostOffer(Offer offer, IHostAttributes hostAttributes) {
        this.offer = requireNonNull(offer);
        this.hostAttributes = requireNonNull(hostAttributes);
        this.resourceBagCache = CacheBuilder.newBuilder().build(new CacheLoader<TierInfo, ResourceBag>() {
            @Override
            public ResourceBag load(TierInfo tierInfo) {
                return bagFromMesosResources(getOfferResources(offer, tierInfo));
            }
        });
    }

    public Offer getOffer() {
        return offer;
    }

    public IHostAttributes getAttributes() {
        return hostAttributes;
    }

    public ResourceBag getResourceBag(TierInfo tierInfo) {
        return resourceBagCache.getUnchecked(tierInfo);
    }

    public Optional<Instant> getUnavailabilityStart() {
        if (offer.hasUnavailability()) {
            return Optional.of(Conversions.getStart(offer.getUnavailability()));
        } else {
            return Optional.absent();
        }
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof HostOffer)) {
            return false;
        }
        HostOffer other = (HostOffer) o;
        return Objects.equals(offer, other.offer) && Objects.equals(hostAttributes, other.hostAttributes);
    }

    @Override
    public int hashCode() {
        return Objects.hash(offer, hostAttributes);
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this).add("offer", offer).add("hostAttributes", hostAttributes)
                .toString();
    }
}