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Bucket list

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update the docs to advertise throw capability.  Test it for bucket list (and fix ordering of bucket lists)
This commit is contained in:
Martin Sumner 2018-11-23 18:56:30 +00:00
parent ef2a8c62af
commit a9aa23bc9c
3 changed files with 91 additions and 51 deletions
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20
src/leveled_runner.erl
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@ -95,10 +95,22 @@ bucket_list(SnapFun, Tag, FoldBucketsFun, InitAcc, MaxBuckets) ->
BucketAcc =
get_nextbucket(null, null,
Tag, LedgerSnapshot, [], {0, MaxBuckets}),
ok = leveled_penciller:pcl_close(LedgerSnapshot),
lists:foldl(fun({B, _K}, Acc) -> FoldBucketsFun(B, Acc) end,
InitAcc,
BucketAcc)
AfterFun =
fun() ->
ok = leveled_penciller:pcl_close(LedgerSnapshot)
end,
FoldRunner =
fun() ->
lists:foldr(fun({B, _K}, Acc) -> FoldBucketsFun(B, Acc) end,
InitAcc,
BucketAcc)
% Buckets in reverse alphabetical order so foldr
end,
% For this fold, the fold over the store is actually completed
% before results are passed to the FoldBucketsFun to be
% accumulated. Using a throw to exit the fold early will not
% in this case save significant time.
wrap_runner(FoldRunner, AfterFun)
end,
{async, Runner}.