001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.runtime.common.evaluator;
020
021import javax.inject.Inject;
022import java.util.logging.Level;
023import java.util.logging.Logger;
024
025/**
026 * Default implementation for re-establishing connection to driver after driver restart.
027 * In this default implementation, information about re-started driver will be obtained
028 * by querying Http server.
029 */
030public final class DefaultDriverConnection implements DriverConnection {
031
032  private static final Logger LOG = Logger.getLogger(DefaultDriverConnection.class.getName());
033
034  @Inject
035  public DefaultDriverConnection() {
036  }
037
038  @Override
039  public String getDriverRemoteIdentifier() {
040    LOG.log(Level.FINE, "Trying to get driver remote identifier by querying Http server.");
041    // TODO[JIRA REEF-843]: implement a proper mechanism to obtain driver remote identifier.
042    throw new UnsupportedOperationException("Not implemented");
043  }
044
045  @Override
046  public void close() {
047  }
048}