content: /**
   * 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 backtype.storm.scheduler;
  
  import java.util.Map;
  import java.util.Set;
  
  public interface SchedulerAssignment {
      /**
       * Is this slot occupied by an assignment?
       */
      boolean isSlotOccupied(WorkerSlot slot);
  
      /**
       * is the executor assigned?
       */
      boolean isExecutorAssigned(ExecutorDetails executor);
  
      /**
       * get the topology-id this assignment is for.
       */
      String getTopologyId();
  
      /**
       * get the executor -> slot map.
       */
      Map<ExecutorDetails, WorkerSlot> getExecutorToSlot();
  
      /**
       * Return the executors covered by this assignments
       */
      Set<ExecutorDetails> getExecutors();
  
      Set<WorkerSlot> getSlots();
  }