content: /*
   * 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.bookkeeper.stream.protocol.util;
  
  /**
   * Placement policy to place ranges to group.
   */
  @FunctionalInterface
  public interface StorageContainerPlacementPolicy {
  
      /**
       * Factory to create placement policy.
       */
      @FunctionalInterface
      interface Factory {
  
          /**
           * Create a placement policy to place ranges to storage containers.
           *
           * @return a new placement policy instance.
           */
          StorageContainerPlacementPolicy newPlacementPolicy();
  
      }
  
      /**
       * Placement a stream range (<tt>streamId</tt>/<tt>rangeId</tt>) to
       * a storage container.
       *
       * @param streamId stream id
       * @param rangeId range id
       * @return storage container id
       */
      long placeStreamRange(long streamId, long rangeId);
  
  }
  