giraph-core/src/main/java/org/apache/giraph/graph/JobProgressTrackerClient.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.giraph.graph;

import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.job.JobProgressTracker;

import java.io.IOException;

/**
 * Wrapper around JobProgressTracker which retries to connect and swallows
 * exceptions so app wouldn't crash if something goes wrong with progress
 * reports.
 */
public interface JobProgressTrackerClient extends JobProgressTracker {
  /** Close the connections if any */
  void cleanup() throws IOException;

  /**
   * Initialize the client.
   * @param conf Job configuration
   * @throws Exception
   */
  void init(GiraphConfiguration conf) throws Exception;
}