lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/EvaluatorListSerializer.java

/*
 * 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 org.apache.reef.webserver;

import org.apache.reef.driver.evaluator.EvaluatorDescriptor;
import org.apache.reef.tang.annotations.DefaultImplementation;

import java.util.Map;

/**
 * Interface for EvaluatorListSerializer.
 */
@DefaultImplementation(AvroEvaluatorListSerializer.class)
public interface EvaluatorListSerializer {
  /**
   * Build AvroEvaluatorList object.
   *
   * @param evaluatorMap
   * @param totalEvaluators
   * @param startTime
   * @return
   */
  AvroEvaluatorList toAvro(Map<String, EvaluatorDescriptor> evaluatorMap,
                           int totalEvaluators,
                           String startTime);

  /**
   * Convert AvroEvaluatorList to JSon string.
   *
   * @param avroEvaluatorList
   * @return
   */
  String toString(AvroEvaluatorList avroEvaluatorList);
}