content: /*
   * 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.asterix.external.input.stream.factory;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  import java.net.ServerSocket;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  import org.apache.asterix.common.exceptions.ErrorCode;
  import org.apache.asterix.common.external.IExternalFilterEvaluatorFactory;
  import org.apache.asterix.external.api.AsterixInputStream;
  import org.apache.asterix.external.api.IExternalDataRuntimeContext;
  import org.apache.asterix.external.api.IInputStreamFactory;
  import org.apache.asterix.external.input.stream.SocketServerInputStream;
  import org.apache.asterix.external.util.ExternalDataConstants;
  import org.apache.asterix.external.util.FeedUtils;
  import org.apache.commons.lang3.tuple.Pair;
  import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
  import org.apache.hyracks.api.application.IServiceContext;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.exceptions.IWarningCollector;
  
  public class SocketServerInputStreamFactory implements IInputStreamFactory {
  
      private static final long serialVersionUID = 1L;
      private List<Pair<String, Integer>> sockets;
  
      @Override
      public void configure(IServiceContext serviceCtx, Map<String, String> configuration,
              IWarningCollector warningCollector, IExternalFilterEvaluatorFactory filterEvaluatorFactory)
              throws CompilationException {
          try {
              sockets = FeedUtils.extractHostsPorts(configuration.get(ExternalDataConstants.KEY_MODE), serviceCtx,
                      configuration.get(ExternalDataConstants.KEY_SOCKETS));
          } catch (CompilationException e) {
              throw e;
          } catch (Exception e) {
              throw new CompilationException(ErrorCode.FEED_METADATA_SOCKET_ADAPTOR_SOCKET_NOT_PROPERLY_CONFIGURED);
          }
      }
  
      @Override
      public synchronized AsterixInputStream createInputStream(IExternalDataRuntimeContext context)
              throws HyracksDataException {
          try {
              Pair<String, Integer> socket = sockets.get(context.getPartition());
              ServerSocket server;
              server = new ServerSocket();
              server.bind(new InetSocketAddress(socket.getRight()));
              return new SocketServerInputStream(server);
          } catch (IOException e) {
              throw HyracksDataException.create(e);
          }
      }
  
      @Override
      public AlgebricksAbsolutePartitionConstraint getPartitionConstraint() {
          return FeedUtils.addressToAbsolutePartitionConstraints(sockets);
      }
  
      public List<Pair<String, Integer>> getSockets() {
          return sockets;
      }
  
      @Override
      public DataSourceType getDataSourceType() {
          return DataSourceType.STREAM;
      }
  }
  