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Mas d31 i416 (#418)

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* Add compression controls (#417)

* Add compression controls

Add configuration options to allow for a compression algorithm of `none` to disable compression altogether.  Also an option to change the point in the LSM tree when compression is applied.

* Handle configurable defaults consistently

Move them into leveled.hrl.  This forces double-definitions to be resolved.

There are some other constants in leveled_bookie that are relevant outside of leveled_bookie.  These are all now in the non-configurable startup defaults section.

* Clarify referred-to default is OTP not leveled

* Update leveled_bookie.erl

Handle xref issue with eunit include
This commit is contained in:
Martin Sumner 2023-11-07 14:58:43 +00:00 • committed by GitHub
parent b96518c32a
commit 9e804924a8
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11 changed files with 338 additions and 163 deletions
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priv/leveled.schema
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@ -46,11 +46,10 @@
%% Can be lz4 or native (which will use the Erlang native zlib compression)
%% within term_to_binary
{mapping, "leveled.compression_method", "leveled.compression_method", [
{default, native},
{datatype, atom}
{datatype, {enum, [native, lz4, none]}},
{default, native}
]}.
%% @doc Compression point
%% The point at which compression is applied to the Journal (the Ledger is
%% always compressed). Use on_receipt or on_compact. on_compact is suitable
@ -61,6 +60,16 @@
{datatype, atom}
]}.
%% @doc Compresstion Level (Ledger LSM)
%% Specify the level in the LSM tree from which compression should occur.
%% Defaults to L1, so only L0 writes are uncompressed.
{mapping, "leveled.compression_level", "leveled.compression_level", [
{default, 1},
{datatype, integer},
{validators, ["range:0-7"]},
hidden
]}.
%% @doc Log level
%% Can be debug, info, warn, error or critical
%% Set the minimum log level to be used within leveled. Leveled will log many