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.record.reader.kv;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.asterix.common.dataflow.ICcApplicationContext;
  import org.apache.asterix.common.external.IExternalFilterEvaluatorFactory;
  import org.apache.asterix.external.api.IExternalDataRuntimeContext;
  import org.apache.asterix.external.api.IRecordReader;
  import org.apache.asterix.external.api.IRecordReaderFactory;
  import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
  import org.apache.hyracks.api.application.IServiceContext;
  import org.apache.hyracks.api.exceptions.IWarningCollector;
  
  import com.couchbase.client.core.message.dcp.DCPRequest;
  
  public class KVTestReaderFactory implements IRecordReaderFactory<DCPRequest> {
  
      private static final long serialVersionUID = 1L;
      private final String bucket = "TestBucket";
      private final int numOfVBuckets = 1024;
      private final int[] schedule = new int[numOfVBuckets];
      private int numOfRecords = 1000; // default = 1 Million
      private int deleteCycle = 0;
      private int upsertCycle = 0;
      private int numOfReaders;
      private transient AlgebricksAbsolutePartitionConstraint clusterLocations;
      private transient IServiceContext serviceCtx;
      private static final List<String> recordReaderNames = Collections.unmodifiableList(Arrays.asList());
  
      @Override
      public AlgebricksAbsolutePartitionConstraint getPartitionConstraint() {
          if (clusterLocations == null) {
              ICcApplicationContext appCtx = (ICcApplicationContext) serviceCtx.getApplicationContext();
              clusterLocations = appCtx.getClusterStateManager().getClusterLocations();
              numOfReaders = clusterLocations.getLocations().length;
          }
          return clusterLocations;
  
      }
  
      @Override
      public void configure(IServiceContext serviceCtx, final Map<String, String> configuration,
              IWarningCollector warningCollector, IExternalFilterEvaluatorFactory filterEvaluatorFactory) {
          this.serviceCtx = serviceCtx;
          if (configuration.containsKey("num-of-records")) {
              numOfRecords = Integer.parseInt(configuration.get("num-of-records"));
          }
          final int numOfReaders = getPartitionConstraint().getLocations().length;
          for (int i = 0; i < numOfVBuckets; i++) {
              schedule[i] = i % numOfReaders;
          }
  
          if (configuration.containsKey("delete-cycle")) {
              deleteCycle = Integer.parseInt(configuration.get("delete-cycle"));
          }
  
          if (configuration.containsKey("upsert-cycle")) {
              upsertCycle = Integer.parseInt(configuration.get("upsert-cycle"));
          }
      }
  
      @Override
      public IRecordReader<? extends DCPRequest> createRecordReader(IExternalDataRuntimeContext context) {
          int partition = context.getPartition();
          return new KVTestReader(partition, bucket, schedule,
                  (int) Math.ceil((double) numOfRecords / (double) numOfReaders), deleteCycle, upsertCycle,
                  (numOfRecords / numOfReaders) * partition);
      }
  
      @Override
      public Class<?> getRecordClass() {
          return DCPRequest.class;
      }
  
      @Override
      public List<String> getRecordReaderNames() {
          return recordReaderNames;
      }
  }
  