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Range queries - pass out as binaries

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Avoid converting to erlang temr wihtin the FSM and then requiring a copy
outside of the FSM - pass out as a binary
This commit is contained in:
martinsumner 2017-03-17 10:47:20 +00:00
parent f287895db0
commit c203e2ee06
1 changed files with 10 additions and 9 deletions
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19
src/leveled_sst.erl
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@ -196,9 +196,15 @@ sst_get(Pid, LedgerKey, Hash) ->
gen_fsm:sync_send_event(Pid, {get_kv, LedgerKey, Hash}, infinity).
sst_getkvrange(Pid, StartKey, EndKey, ScanWidth) ->
gen_fsm:sync_send_event(Pid,
{get_kvrange, StartKey, EndKey, ScanWidth},
infinity).
Reply = gen_fsm:sync_send_event(Pid,
{get_kvrange, StartKey, EndKey, ScanWidth},
infinity),
FetchFun =
fun({SlotBin, SK, EK}, Acc) ->
Acc ++ binaryslot_trimmedlist(SlotBin, SK, EK)
end,
{SlotsToFetchBinList, SlotsToPoint} = Reply,
lists:foldl(FetchFun, [], SlotsToFetchBinList) ++ SlotsToPoint.
sst_getslots(Pid, SlotList) ->
SlotBins = gen_fsm:sync_send_event(Pid, {get_slots, SlotList}, infinity),
@ -493,12 +499,7 @@ fetch_range(StartKey, EndKey, ScanWidth, State) ->
end,
SlotsToFetchBinList = read_slots(Handle, SlotsToFetch),
FetchFun =
fun({SlotBin, SK, EK}, Acc) ->
Acc ++ binaryslot_trimmedlist(SlotBin, SK, EK)
end,
lists:foldl(FetchFun, [], SlotsToFetchBinList) ++ SlotsToPoint.
{SlotsToFetchBinList, SlotsToPoint}.
write_file(RootPath, Filename, SummaryBin, SlotsBin) ->