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.common.config;
  
  import static org.apache.hyracks.control.common.config.OptionTypes.BOOLEAN;
  import static org.apache.hyracks.control.common.config.OptionTypes.INTEGER_BYTE_UNIT;
  import static org.apache.hyracks.control.common.config.OptionTypes.LONG;
  import static org.apache.hyracks.control.common.config.OptionTypes.NONNEGATIVE_INTEGER;
  import static org.apache.hyracks.control.common.config.OptionTypes.POSITIVE_INTEGER;
  import static org.apache.hyracks.control.common.config.OptionTypes.STRING;
  
  import java.util.concurrent.TimeUnit;
  
  import org.apache.hyracks.api.config.IOption;
  import org.apache.hyracks.api.config.IOptionType;
  import org.apache.hyracks.api.config.Section;
  import org.apache.hyracks.control.common.controllers.NCConfig;
  import org.apache.hyracks.util.StorageUtil;
  import org.apache.hyracks.util.StorageUtil.StorageUnit;
  
  public class ReplicationProperties extends AbstractProperties {
  
      public enum Option implements IOption {
          REPLICATION_LOG_BUFFER_PAGESIZE(
                  INTEGER_BYTE_UNIT,
                  StorageUtil.getIntSizeInBytes(128, StorageUnit.KILOBYTE),
                  "The size in bytes of each log buffer page"),
          REPLICATION_LOG_BUFFER_NUMPAGES(POSITIVE_INTEGER, 8, "The number of log buffer pages"),
          REPLICATION_LOG_BATCHSIZE(
                  INTEGER_BYTE_UNIT,
                  StorageUtil.getIntSizeInBytes(4, StorageUnit.KILOBYTE),
                  "The size in bytes to replicate in each batch"),
          REPLICATION_TIMEOUT(
                  LONG,
                  TimeUnit.SECONDS.toSeconds(120),
                  "The time in seconds to timeout waiting for master or replica to ack"),
          REPLICATION_ENABLED(BOOLEAN, false, "Whether or not data replication is enabled"),
          REPLICATION_FACTOR(NONNEGATIVE_INTEGER, 2, "Number of replicas (backups) to maintain per master replica"),
          REPLICATION_STRATEGY(STRING, "none", "Replication strategy to choose");
  
          private final IOptionType type;
          private final Object defaultValue;
          private final String description;
  
          Option(IOptionType type, Object defaultValue, String description) {
              this.type = type;
              this.defaultValue = defaultValue;
              this.description = description;
          }
  
          @Override
          public Section section() {
              return Section.COMMON;
          }
  
          @Override
          public String description() {
              return description;
          }
  
          @Override
          public IOptionType type() {
              return type;
          }
  
          @Override
          public Object defaultValue() {
              return defaultValue;
          }
      }
  
      public boolean isReplicationEnabled() {
          return accessor.getBoolean(Option.REPLICATION_ENABLED);
      }
  
      public ReplicationProperties(PropertiesAccessor accessor) {
          super(accessor);
      }
  
      public int getLogBufferPageSize() {
          return accessor.getInt(Option.REPLICATION_LOG_BUFFER_PAGESIZE);
      }
  
      public int getLogBufferNumOfPages() {
          return accessor.getInt(Option.REPLICATION_LOG_BUFFER_NUMPAGES);
      }
  
      public int getLogBatchSize() {
          return accessor.getInt(Option.REPLICATION_LOG_BATCHSIZE);
      }
  
      public String getReplicationAddress() {
          return accessor.getString(NCConfig.Option.REPLICATION_LISTEN_ADDRESS);
      }
  
      public int getReplicationPort() {
          return accessor.getInt(NCConfig.Option.REPLICATION_LISTEN_PORT);
      }
  
      public String getReplicationStrategy() {
          return accessor.getString(Option.REPLICATION_STRATEGY);
      }
  
      public long getReplicationTimeOut() {
          return accessor.getLong(Option.REPLICATION_TIMEOUT);
      }
  
      public int getReplicationFactor() {
          return accessor.getInt(Option.REPLICATION_FACTOR);
      }
  }
  