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/*
 * Copyright (c) 2018, PostgreSQL Global Development Group
 * See the LICENSE file in the project root for more information.
 */

package com.amazon.redshift.replication;

/**
 * Information returned on replication slot creation.
 *
 * Returned keys of CREATE_REPLICATION_SLOT:
 * 

 * slot_name String {@code =>} the slot name
 * 
consistent_point String {@code =>} LSN at which we became consistent
 * 
snapshot_name String {@code =>} exported snapshot's name (may be null)
 * 
output_plugin String {@code =>} output plugin (may be null)
 * 
 */
public final class ReplicationSlotInfo {

  private final String slotName;
  private final ReplicationType replicationType;
  private final LogSequenceNumber consistentPoint;
  private final String snapshotName;
  private final String outputPlugin;

  public ReplicationSlotInfo(String slotName, ReplicationType replicationType,
      LogSequenceNumber consistentPoint, String snapshotName, String outputPlugin) {
    this.slotName = slotName;
    this.replicationType = replicationType;
    this.consistentPoint = consistentPoint;
    this.snapshotName = snapshotName;
    this.outputPlugin = outputPlugin;
  }

  /**
   * Replication slot name.
   *
   * @return the slot name
   */
  public String getSlotName() {
    return slotName;
  }

  /**
   * Replication type of the slot created, might be PHYSICAL or LOGICAL.
   *
   * @return ReplicationType, PHYSICAL or LOGICAL
   */
  public ReplicationType getReplicationType() {
    return replicationType;
  }

  /**
   * LSN at which we became consistent.
   *
   * @return LogSequenceNumber with the consistent_point
   */
  public LogSequenceNumber getConsistentPoint() {
    return consistentPoint;
  }

  /**
   * Exported snapshot name at the point of replication slot creation.
   *
   * As long as the exporting transaction remains open, other transactions can import its snapshot,
   * and thereby be guaranteed that they see exactly the same view of the database that the first
   * transaction sees.
   *
   * @return exported snapshot_name (may be null)
   */
  public String getSnapshotName() {
    return snapshotName;
  }

  /**
   * Output Plugin used on slot creation.
   *
   * @return output_plugin (may be null)
   */
  public String getOutputPlugin() {
    return outputPlugin;
  }

}