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This module contains all API code. External dependencies should be limited. Any changes to public methods should be avoided. While the API module does not have compile time dependency on fluo-core, you must include fluo-core as a run-time dependency.

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/*
 * Copyright 2014 Fluo authors (see AUTHORS)
 * 
 * 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.fluo.api.client;

/**
 * Executes provided {@link Loader} objects to load data into Fluo. {@link LoaderExecutor#close()}
 * should be called when finished.
 */
public interface LoaderExecutor extends AutoCloseable {

  /**
   * Queues {@link Loader} task implemented by users for execution. The load Task may not have
   * completed when the method returns. If the queue is full, this method will block.
   */
  void execute(Loader loader);

  /**
   * Waits for all queued and running Loader task to complete, then cleans up resources.
   */
  @Override
  void close();
}