Interface SegmentChangeFetcher

All Known Implementing Classes:
HttpSegmentChangeFetcher

public interface SegmentChangeFetcher
Fetches changes in the segment since a reference point.
Author:
adil
  • Method Summary

    Modifier and Type Method Description
    SegmentChange fetch​(String segmentName, long changesSinceThisChangeNumber)
  • Method Details

    • fetch

      SegmentChange fetch​(String segmentName, long changesSinceThisChangeNumber)

      If the segment does not exist, then return the an empty segment change with the latest change number set to a value less than 0.

      If no changes have happened since the change number requested, then return an empty segment change with the latest change number equal to the requested change number.

      Parameters:
      segmentName - the name of the segment to fetch.
      changesSinceThisChangeNumber - a value less than zero implies that the client is requesting information on this segment for the first time.
      Returns:
      SegmentChange
      Throws:
      RuntimeException - if there was a problem fetching segment changes