Package org.apache.druid.client

Interface TimelineServerView.TimelineCallback

  • Enclosing interface:
    TimelineServerView
    public static interface TimelineServerView.TimelineCallback

    • Method Detail

      • timelineInitialized

        ServerView.CallbackAction timelineInitialized()
        Called once, when the timeline has been initialized.
        Returns:
        continue or unregister

      • segmentAdded

        ServerView.CallbackAction segmentAdded​(DruidServerMetadata server,
                                       org.apache.druid.timeline.DataSegment segment)
        Called when a segment on a particular server has been added to the timeline. May be called multiple times for the same segment, if that segment is added on multiple servers.
        Parameters:
        server - the server
        segment - the segment
        Returns:
        continue or unregister

      • segmentRemoved

        ServerView.CallbackAction segmentRemoved​(org.apache.druid.timeline.DataSegment segment)
        Called when a segment has been removed from all servers and is no longer present in the timeline.
        Parameters:
        segment - the segment
        Returns:
        continue or unregister

      • serverSegmentRemoved

        ServerView.CallbackAction serverSegmentRemoved​(DruidServerMetadata server,
                                               org.apache.druid.timeline.DataSegment segment)
        Called when a segment is removed from a server. Note that the timeline can still have the segment, even though it's removed from given server. segmentRemoved(DataSegment) is the authority on when segment is removed from the timeline.
        Parameters:
        server - The server that removed a segment
        segment - The segment that was removed
        Returns:
        continue or unregister

      • segmentSchemasAnnounced

        ServerView.CallbackAction segmentSchemasAnnounced​(SegmentSchemas segmentSchemas)
        Called when segment schema is announced. Schema flow HttpServerInventoryView -> CoordinatorServerView -> CoordinatorSegmentMetadataCache CoordinatorServerView simply delegates the schema information by invoking Timeline callback to metadata cache.
        Parameters:
        segmentSchemas - segment schema
        Returns:
        continue or unregister