//--- graceful exit progress ---//

model graceful_exit_progress (
	table graceful_exit_progress
	key node_id

	field node_id                     blob
	field bytes_transferred           int64     ( updatable )
	field pieces_transferred          int64     ( autoinsert, updatable, default 0 )
	field pieces_failed               int64     ( autoinsert, updatable, default 0 )
	field updated_at                  timestamp ( autoinsert, autoupdate )
)

read one (
	select graceful_exit_progress
	where graceful_exit_progress.node_id = ?
)

//--- graceful exit transfer queue with segment stream_id and position ---//

model graceful_exit_segment_transfer (
	table graceful_exit_segment_transfer_queue
	key node_id stream_id position piece_num

	field node_id                blob
	field stream_id              blob
	field position               uint64
	field piece_num              int
	field root_piece_id          blob      ( nullable )
	field durability_ratio       float64   ( updatable )
	field queued_at              timestamp ( autoinsert )
	field requested_at           timestamp ( updatable, nullable )
	field last_failed_at         timestamp ( updatable, nullable )
	field last_failed_code       int       ( updatable, nullable )
	field failed_count           int       ( updatable, nullable )
	field finished_at            timestamp ( updatable, nullable )
	field order_limit_send_count int       ( updatable, default 0 )

	index (
		name graceful_exit_segment_transfer_nid_dr_qa_fa_lfa_index
		fields node_id durability_ratio queued_at finished_at last_failed_at
	)
)

update graceful_exit_segment_transfer (
	where graceful_exit_segment_transfer.node_id = ?
	where graceful_exit_segment_transfer.stream_id = ?
	where graceful_exit_segment_transfer.position = ?
	where graceful_exit_segment_transfer.piece_num = ?
	noreturn
)
delete graceful_exit_segment_transfer (
	where graceful_exit_segment_transfer.node_id = ?
)

delete graceful_exit_segment_transfer (
	where graceful_exit_segment_transfer.node_id = ?
	where graceful_exit_segment_transfer.stream_id = ?
	where graceful_exit_segment_transfer.position = ?
	where graceful_exit_segment_transfer.piece_num = ?
)

delete graceful_exit_segment_transfer (
	where graceful_exit_segment_transfer.node_id = ?
	where graceful_exit_segment_transfer.finished_at != null
)

read one (
	select graceful_exit_segment_transfer
	where graceful_exit_segment_transfer.node_id = ?
	where graceful_exit_segment_transfer.stream_id = ?
	where graceful_exit_segment_transfer.position = ?
	where graceful_exit_segment_transfer.piece_num = ?
)