geode-core/src/main/java/org/apache/geode/cache/DiskWriteAttributes.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.geode.cache;

/**
 * Immutable parameter object for describing how {@linkplain Region.Entry region entries} should be
 * written to disk.
 *
 * @see DiskWriteAttributesFactory
 * @see AttributesFactory#setDiskWriteAttributes
 * @see RegionAttributes#getDiskWriteAttributes
 * @see Region#writeToDisk
 *
 *
 * @since GemFire 3.2
 * @deprecated as of 6.5 use {@link DiskStore} instead
 */
@Deprecated
public interface DiskWriteAttributes extends java.io.Serializable {



  ////////////////////// Instance Methods //////////////////////



  /**
   * Returns true if this <code>DiskWriteAttributes</code> object configures synchronous writes.
   *
   * @return Returns true if writes to disk are synchronous and false otherwise
   * @deprecated as of 6.5 use {@link RegionAttributes#isDiskSynchronous} instead.
   */
  @Deprecated
  boolean isSynchronous();


  /**
   * Returns true if the oplogs is to be rolled to a more condensed format (on disk)
   *
   * @return Returns true if the oplogs is to be rolled or false otherwise
   */
  boolean isRollOplogs();

  /**
   * Get the maximum size in megabytes a single oplog (operation log) file should be
   *
   * @return the maximum size the operations log file can be
   * @deprecated as of 6.5 use {@link DiskStore#getMaxOplogSize()} instead.
   */
  @Deprecated
  int getMaxOplogSize();

  /**
   * Returns the number of milliseconds that can elapse before unwritten data is written to disk. If
   * this <code>DiskWriteAttributes</code> configures synchronous writing, then
   * <code>timeInterval</code> has no meaning.
   *
   * @return Returns the time interval in milliseconds that can elapse between two writes to disk
   * @deprecated as of 6.5 use {@link DiskStore#getTimeInterval()} instead.
   */
  @Deprecated
  long getTimeInterval();

  /**
   * Returns the number of unwritten bytes of data that can be enqueued before being written to
   * disk. If this <code>DiskWriteAttributes</code> configures synchronous writing, then
   * <code>bytesThreshold</code> has no meaning.
   *
   * @return Returns the number of bytes that can be buffered before being written to disk
   * @deprecated as of 6.5 use {@link DiskStore#getQueueSize()} instead.
   */
  @Deprecated
  long getBytesThreshold();

  /**
   * Two <code>DiskWriteAttributes</code> are equal if the both specify the synchronous writes, or
   * they both specify asynchronous writes with the same time interval, bytes threshold,
   * maxOplogSize and compaction values
   *
   * @return true if o is equal else false
   */
  boolean equals(Object o);

}