org.apache.aurora.scheduler.resources.AcceptedOffer.java Source code

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Here is the source code for org.apache.aurora.scheduler.resources.AcceptedOffer.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.resources;

import java.util.List;
import java.util.function.Predicate;
import java.util.stream.StreamSupport;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;

import org.apache.aurora.scheduler.TierInfo;
import org.apache.aurora.scheduler.storage.entities.IAssignedTask;
import org.apache.mesos.v1.Protos.Offer;
import org.apache.mesos.v1.Protos.Resource;

import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.toList;

import static org.apache.aurora.scheduler.resources.ResourceManager.getOfferResources;

/**
 * Allocate resources from an accepted Mesos Offer to TaskInfo and ExecutorInfo.
 */
public final class AcceptedOffer {
    /**
     * Reserved resource filter.
     */
    @VisibleForTesting
    static final Predicate<Resource> RESERVED = e -> e.hasRole() && !e.getRole().equals("*");

    /**
     * Get proper value for {@link org.apache.mesos.Protos.TaskInfo}'s resources.
     * @return A list of Resource used for TaskInfo.
     */
    public Iterable<Resource> getTaskResources() {
        return taskResources;
    }

    /**
     * Get proper value for {@link org.apache.mesos.Protos.ExecutorInfo}'s resources.
     * @return A list of Resource used for ExecutorInfo.
     */
    public Iterable<Resource> getExecutorResources() {
        return executorResources;
    }

    private final Iterable<Resource> taskResources;
    private final Iterable<Resource> executorResources;

    public static AcceptedOffer create(Offer offer, IAssignedTask task, ResourceBag executorOverhead,
            TierInfo tierInfo) throws ResourceManager.InsufficientResourcesException {

        ImmutableList.Builder<Resource> taskResources = ImmutableList.builder();
        ImmutableList.Builder<Resource> executorResources = ImmutableList.builder();

        ResourceManager.bagFromResources(task.getTask().getResources()).streamResourceVectors().forEach(entry -> {
            ResourceType type = entry.getKey();
            Iterable<Resource.Builder> offerResources = StreamSupport
                    .stream(getOfferResources(offer, tierInfo, entry.getKey()).spliterator(), false)
                    // Note the reverse order of args in .compare(): we want RESERVED resources first.
                    .sorted((l, r) -> Boolean.compare(RESERVED.test(r), RESERVED.test(l))).map(Resource::toBuilder)
                    .collect(toList());

            boolean isRevocable = type.isMesosRevocable() && tierInfo.isRevocable();

            taskResources.addAll(type.getMesosResourceConverter().toMesosResource(offerResources,
                    type.getMapper().isPresent() ? () -> type.getMapper().get().getAssigned(task)
                            : () -> entry.getValue(),
                    isRevocable));

            if (executorOverhead.getResourceVectors().containsKey(type)) {
                executorResources.addAll(type.getMesosResourceConverter().toMesosResource(offerResources,
                        () -> executorOverhead.getResourceVectors().get(type), isRevocable));
            }
        });

        return new AcceptedOffer(taskResources.build(), executorResources.build());
    }

    private AcceptedOffer(List<Resource> taskResources, List<Resource> executorResources) {

        this.taskResources = requireNonNull(taskResources);
        this.executorResources = requireNonNull(executorResources);
    }
}