io.druid.indexing.overlord.ImmutableZkWorker Maven / Gradle / Ivy

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * 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 io.druid.indexing.overlord;

import com.google.common.collect.ImmutableSet;
import io.druid.indexing.common.task.Task;
import io.druid.indexing.worker.Worker;

import java.util.Set;

/**
 * A snapshot of a {@link io.druid.indexing.overlord.ZkWorker}
 */
public class ImmutableZkWorker
{
  private final Worker worker;
  private final int currCapacityUsed;
  private final ImmutableSet availabilityGroups;

  public ImmutableZkWorker(Worker worker, int currCapacityUsed, Set availabilityGroups)
  {
    this.worker = worker;
    this.currCapacityUsed = currCapacityUsed;
    this.availabilityGroups = ImmutableSet.copyOf(availabilityGroups);
  }

  public Worker getWorker()
  {
    return worker;
  }

  public int getCurrCapacityUsed()
  {
    return currCapacityUsed;
  }

  public Set getAvailabilityGroups()
  {
    return availabilityGroups;
  }

  public boolean isValidVersion(String minVersion)
  {
    return worker.getVersion().compareTo(minVersion) >= 0;
  }

  public boolean canRunTask(Task task)
  {
    return (worker.getCapacity() - getCurrCapacityUsed() >= task.getTaskResource().getRequiredCapacity()
            && !getAvailabilityGroups().contains(task.getTaskResource().getAvailabilityGroup()));
  }
}