diff --git a/Makefile b/Makefile index 5071ea4..79771c0 100644 --- a/Makefile +++ b/Makefile @@ -30,14 +30,22 @@ clean-test-btrees: plt: compile $(DIALYZER) --build_plt --output_plt .hanoi.plt \ + -pa deps/snappy/ebin \ -pa deps/plain_fsm/ebin \ deps/plain_fsm/ebin \ --apps kernel stdlib analyze: compile $(DIALYZER) --plt .hanoi.plt \ + -pa deps/snappy/ebin \ -pa deps/plain_fsm/ebin \ ebin +analyze-nospec: compile + $(DIALYZER) --plt .hanoi.plt \ + -pa deps/plain_fsm/ebin \ + --no_spec \ + ebin + repl: erl -pz deps/*/ebin -pa ebin diff --git a/src/basho_bench_driver_hanoidb.erl b/src/basho_bench_driver_hanoidb.erl index 5844d54..f4fdc0a 100644 --- a/src/basho_bench_driver_hanoidb.erl +++ b/src/basho_bench_driver_hanoidb.erl @@ -24,11 +24,11 @@ -module(basho_bench_driver_hanoidb). --record(state, { tree, - filename, - flags, - sync_interval, - last_sync }). +-record(state, { tree :: hanoidb:hanoidb(), + filename :: string(), + flags :: list(), + sync_interval :: integer() | infinity, + last_sync :: erlang:timestamp() }). -export([new/1, run/4]). @@ -62,11 +62,12 @@ new(_Id) -> Config = basho_bench_config:get(hanoidb_flags, []), %% Look for sync interval config + SyncInterval = case basho_bench_config:get(hanoidb_sync_interval, infinity) of Value when is_integer(Value) -> - SyncInterval = Value; + Value; infinity -> - SyncInterval = infinity + infinity end, %% Get any bitcask flags @@ -106,7 +107,7 @@ run(delete, KeyGen, _ValueGen, State) -> run(fold_100, KeyGen, _ValueGen, State) -> [From,To] = lists:usort([KeyGen(), KeyGen()]), - case hanoidb:sync_fold_range(State#state.tree, + case hanoidb:fold_range(State#state.tree, fun(_Key,_Value,Count) -> Count+1 end, diff --git a/src/hanoidb.erl b/src/hanoidb.erl index 74cd856..7e847d8 100644 --- a/src/hanoidb.erl +++ b/src/hanoidb.erl @@ -42,8 +42,8 @@ -include_lib("include/hanoidb.hrl"). -include_lib("include/plain_rpc.hrl"). --record(state, { top :: pos_integer(), - nursery :: term(), +-record(state, { top :: pid(), + nursery :: #nursery{}, dir :: string(), opt :: term(), max_level :: pos_integer()}). @@ -407,6 +407,9 @@ handle_call({get, Key}, From, State=#state{ top=Top, nursery=Nursery } ) when is {noreply, State} end; +handle_call(close, _From, State=#state{ nursery=undefined }) -> + {stop, normal, ok, State}; + handle_call(close, _From, State=#state{ nursery=Nursery, top=Top, dir=Dir, max_level=MaxLevel, opt=Config }) -> try ok = hanoidb_nursery:finish(Nursery, Top), @@ -424,8 +427,8 @@ handle_call(destroy, _From, State=#state{top=Top, nursery=Nursery }) -> ok = hanoidb_level:destroy(Top), {stop, normal, ok, State#state{ top=undefined, nursery=undefined, max_level=?TOP_LEVEL }}. - -do_put(Key, Value, Expiry, State=#state{ nursery=Nursery, top=Top }) -> +-spec do_put(key(), value(), expiry(), #state{}) -> {ok, #state{}}. +do_put(Key, Value, Expiry, State=#state{ nursery=Nursery, top=Top }) when Nursery =/= undefined -> {ok, Nursery2} = hanoidb_nursery:add(Key, Value, Expiry, Nursery, Top), {ok, State#state{nursery=Nursery2}}. diff --git a/src/hanoidb.hrl b/src/hanoidb.hrl index 20f75c4..0264518 100644 --- a/src/hanoidb.hrl +++ b/src/hanoidb.hrl @@ -47,3 +47,25 @@ -define(KEY_IN_RANGE(Key,Range), (?KEY_IN_FROM_RANGE(Key,Range) andalso ?KEY_IN_TO_RANGE(Key,Range))). + +-record(nursery, { log_file :: file:fd(), + dir :: string(), + cache :: gb_tree(), + total_size=0 :: integer(), + count=0 :: integer(), + last_sync=now() :: erlang:timestamp(), + max_level :: integer(), + config=[] :: [{atom(), term()}], + step=0 :: integer(), + merge_done=0 :: integer()}). + +-type kventry() :: { key(), expvalue() } | [ kventry() ]. +-type key() :: binary(). +-type txspec() :: { delete, key() } | { put, key(), value() }. +-type value() :: ?TOMBSTONE | binary(). +-type expiry() :: infinity | integer(). +-type filepos() :: { non_neg_integer(), non_neg_integer() }. +-type expvalue() :: { value(), expiry() } + | value() + | filepos(). + diff --git a/src/hanoidb_bloom.erl b/src/hanoidb_bloom.erl index b75fdec..99e3958 100644 --- a/src/hanoidb_bloom.erl +++ b/src/hanoidb_bloom.erl @@ -46,7 +46,7 @@ n :: non_neg_integer(), % maximum number of elements mb :: non_neg_integer(), % 2^mb = m, the size of each slice (bitvector) size :: non_neg_integer(), % number of elements - a :: [binary()] % list of bitvectors + a :: [array()] % list of bitvectors }). -record(sbf, { @@ -183,16 +183,18 @@ set_bits(Mask, I1, I, [H|T], Acc) -> bitarray_new(N) -> array:new((N-1) div ?W + 1, {default, 0}). +-spec bitarray_set( non_neg_integer(), array() ) -> array(). bitarray_set(I, A) -> AI = I div ?W, V = array:get(AI, A), V1 = V bor (1 bsl (I rem ?W)), array:set(AI, V1, A). +-spec bitarray_get( non_neg_integer(), array() ) -> boolean(). bitarray_get(I, A) -> AI = I div ?W, V = array:get(AI, A), - V band (1 bsl (I rem ?W)) =/= 0. + (V band (1 bsl (I rem ?W))) =/= 0. encode(Bloom) -> zlib:gzip(term_to_binary(Bloom)). diff --git a/src/hanoidb_fold_worker.erl b/src/hanoidb_fold_worker.erl index b46d522..5ee9dcf 100644 --- a/src/hanoidb_fold_worker.erl +++ b/src/hanoidb_fold_worker.erl @@ -68,7 +68,7 @@ -include("hanoidb.hrl"). -include("plain_rpc.hrl"). --record(state, {sendto, sendto_ref}). +-record(state, {sendto :: pid(), sendto_ref :: reference()}). start(SendTo) -> F = fun() -> @@ -195,7 +195,7 @@ emit_next(State, [], _Queues) -> Msg = {fold_done, self()}, Target = State#state.sendto, ?log( "~p ! ~p~n", [Target, Msg]), - plain_rpc:cast(Target, Msg), + _ = plain_rpc:cast(Target, Msg), end_of_fold(State); emit_next(State, [{FirstPID,FirstKV}|Rest]=Values, Queues) -> @@ -215,7 +215,7 @@ emit_next(State, [{FirstPID,FirstKV}|Rest]=Values, Queues) -> fill(State, Values, Queues, FillFrom); {{Key, limit}, _} -> ?log( "~p ! ~p~n", [State#state.sendto, {fold_limit, self(), Key}]), - plain_rpc:cast(State#state.sendto, {fold_limit, self(), Key}), + _ = plain_rpc:cast(State#state.sendto, {fold_limit, self(), Key}), end_of_fold(State); {{Key, Value}, FillFrom} -> ?log( "~p ! ~p~n", [State#state.sendto, {fold_result, self(), Key, '...'}]), diff --git a/src/hanoidb_level.erl b/src/hanoidb_level.erl index 5a5d857..fa633fc 100644 --- a/src/hanoidb_level.erl +++ b/src/hanoidb_level.erl @@ -853,13 +853,13 @@ do_range_fold(BT, WorkerPID, SelfOrRef, Range) -> BT, Range) of {limit, _, LastKey} -> - WorkerPID ! {level_limit, SelfOrRef, LastKey}; + WorkerPID ! {level_limit, SelfOrRef, LastKey}, + ok; {done, _} -> %% tell fold merge worker we're done - WorkerPID ! {level_done, SelfOrRef} - - end, - ok. + WorkerPID ! {level_done, SelfOrRef}, + ok + end. -define(FOLD_CHUNK_SIZE, 100). diff --git a/src/hanoidb_merger.erl b/src/hanoidb_merger.erl index 7b95675..8f30712 100644 --- a/src/hanoidb_merger.erl +++ b/src/hanoidb_merger.erl @@ -40,16 +40,11 @@ %% merges, so we default to running the entire merge in one process. -define(LOCAL_WRITER, true). +-spec merge(string(), string(), string(), integer(), boolean(), list()) -> {ok, integer()}. merge(A,B,C, Size, IsLastLevel, Options) -> {ok, IXA} = hanoidb_reader:open(A, [sequential|Options]), {ok, IXB} = hanoidb_reader:open(B, [sequential|Options]), - {ok, Out} = - case ?LOCAL_WRITER of - true -> - hanoidb_writer:init([C, [{size, Size} | Options]]); - false -> - hanoidb_writer:open(C, [{size, Size} | Options]) - end, + {ok, Out} = hanoidb_writer:init([C, [{size, Size} | Options]]), AKVs = case hanoidb_reader:first_node(IXA) of {node, AKV} -> AKV; @@ -63,16 +58,9 @@ merge(A,B,C, Size, IsLastLevel, Options) -> scan(IXA, IXB, Out, IsLastLevel, AKVs, BKVs, {0, none}). terminate(Out) -> - case ?LOCAL_WRITER of - true -> - {ok, Count, _} = hanoidb_writer:handle_call(count, self(), Out), - {stop, normal, ok, _} = hanoidb_writer:handle_call(close, self(), Out), - {ok, Count}; - false -> - Count = hanoidb_writer:count(Out), - ok = hanoidb_writer:close(Out), - {ok, Count} - end. + {ok, Count, _} = hanoidb_writer:handle_call(count, self(), Out), + {stop, normal, ok, _} = hanoidb_writer:handle_call(close, self(), Out), + {ok, Count}. step(S) -> step(S, 1). @@ -103,16 +91,11 @@ scan(IXA, IXB, Out, IsLastLevel, AKVs, BKVs, {N, FromPID}) when N < 1, AKVs =/= {step, From, HowMany} -> scan(IXA, IXB, Out, IsLastLevel, AKVs, BKVs, {N+HowMany, From}) after ?HIBERNATE_TIMEOUT -> - case ?LOCAL_WRITER of - true -> - Args = {hanoidb_reader:serialize(IXA), - hanoidb_reader:serialize(IXB), - hanoidb_writer:serialize(Out), IsLastLevel, AKVs, BKVs, N}, - Keep = zlib:gzip(erlang:term_to_binary(Args)), - hibernate_scan(Keep); - false -> - scan(IXA, IXB, Out, IsLastLevel, AKVs, BKVs, {0, none}) - end + Args = {hanoidb_reader:serialize(IXA), + hanoidb_reader:serialize(IXB), + hanoidb_writer:serialize(Out), IsLastLevel, AKVs, BKVs, N}, + Keep = zlib:gzip(erlang:term_to_binary(Args)), + hibernate_scan(Keep) end; scan(IXA, IXB, Out, IsLastLevel, [], BKVs, Step) -> @@ -135,38 +118,14 @@ scan(IXA, IXB, Out, IsLastLevel, AKVs, [], Step) -> scan(IXA, IXB, Out, IsLastLevel, [{Key1,Value1}|AT]=_AKVs, [{Key2,_Value2}|_IX]=BKVs, Step) when Key1 < Key2 -> - Out3 = - case ?LOCAL_WRITER of - true -> - {noreply, Out2} = hanoidb_writer:handle_cast({add, Key1, Value1}, Out), - Out2; - false -> - ok = hanoidb_writer:add(Out, Key1, Value1), - Out - end, + {noreply, Out3} = hanoidb_writer:handle_cast({add, Key1, Value1}, Out), scan(IXA, IXB, Out3, IsLastLevel, AT, BKVs, step(Step)); scan(IXA, IXB, Out, IsLastLevel, [{Key1,_Value1}|_AT]=AKVs, [{Key2,Value2}|IX]=_BKVs, Step) when Key1 > Key2 -> - Out3 = - case ?LOCAL_WRITER of - true -> - {noreply, Out2} = hanoidb_writer:handle_cast({add, Key2, Value2}, Out), - Out2; - false -> - ok = hanoidb_writer:add(Out, Key2, Value2), - Out - end, + {noreply, Out3} = hanoidb_writer:handle_cast({add, Key2, Value2}, Out), scan(IXA, IXB, Out3, IsLastLevel, AKVs, IX, step(Step)); scan(IXA, IXB, Out, IsLastLevel, [{_Key1,_Value1}|AT]=_AKVs, [{Key2,Value2}|IX]=_BKVs, Step) -> - Out3 = - case ?LOCAL_WRITER of - true -> - {noreply, Out2} = hanoidb_writer:handle_cast({add, Key2, Value2}, Out), - Out2; - false -> - ok = hanoidb_writer:add(Out, Key2, Value2), - Out - end, + {noreply, Out3} = hanoidb_writer:handle_cast({add, Key2, Value2}, Out), scan(IXA, IXB, Out3, IsLastLevel, AT, IX, step(Step, 2)). hibernate_scan_only(Keep) -> @@ -217,13 +176,5 @@ scan_only(IX, Out, true, [{_,?TOMBSTONE}|Rest], Step) -> scan_only(IX, Out, true, Rest, step(Step)); scan_only(IX, Out, IsLastLevel, [{Key,Value}|Rest], Step) -> - Out3 = - case ?LOCAL_WRITER of - true -> - {noreply, Out2} = hanoidb_writer:handle_cast({add, Key, Value}, Out), - Out2; - false -> - ok = hanoidb_writer:add(Out, Key, Value), - Out - end, + {noreply, Out3} = hanoidb_writer:handle_cast({add, Key, Value}, Out), scan_only(IX, Out3, IsLastLevel, Rest, step(Step)). diff --git a/src/hanoidb_nursery.erl b/src/hanoidb_nursery.erl index 1dc2856..07f1093 100644 --- a/src/hanoidb_nursery.erl +++ b/src/hanoidb_nursery.erl @@ -32,17 +32,6 @@ -include("hanoidb.hrl"). -include_lib("kernel/include/file.hrl"). --record(nursery, { log_file :: file:fd(), - dir :: string(), - cache :: gb_tree(), - total_size=0 :: integer(), - count=0 :: integer(), - last_sync=now() :: erlang:timestamp(), - max_level :: integer(), - config=[] :: [{atom(), term()}], - step=0 :: integer(), - merge_done=0 :: integer()}). - -spec new(string(), integer(), [_]) -> {ok, #nursery{}} | {error, term()}. -define(LOGFILENAME(Dir), filename:join(Dir, "nursery.log")). @@ -99,15 +88,15 @@ read_nursery_from_log(Directory, MaxLevel, Config) -> case hanoidb_util:decode_crc_data(LogBinary, [], []) of {ok, KVs} -> fill_cache(KVs, gb_trees:empty()); - {error, _Reason} -> + {partial, KVs, _ErrorData} -> error_logger:info_msg("ignoring undecypherable bytes in ~p~n", [?LOGFILENAME(Directory)]), - gb_trees:empty() + fill_cache(KVs, gb_trees:empty()) end, {ok, #nursery{ dir=Directory, cache=Cache, count=gb_trees:size(Cache), max_level=MaxLevel, config=Config }}. %% @doc Add a Key/Value to the nursery %% @end --spec do_add(#nursery{}, binary(), binary()|?TOMBSTONE, non_neg_integer() | infinity, pid()) -> {ok, #nursery{}}. +-spec do_add(#nursery{}, binary(), binary()|?TOMBSTONE, non_neg_integer() | infinity, pid()) -> {ok, #nursery{}} | {full, #nursery{}}. do_add(Nursery, Key, Value, infinity, Top) -> do_add(Nursery, Key, Value, 0, Top); do_add(Nursery=#nursery{log_file=File, cache=Cache, total_size=TotalSize, count=Count, config=Config}, Key, Value, KeyExpiryTime, Top) -> @@ -244,10 +233,11 @@ destroy(#nursery{ dir=Dir, log_file=LogFile }) -> file:delete(LogFileName), ok. - +-spec add(key(), value(), #nursery{}, pid()) -> {ok, #nursery{}}. add(Key, Value, Nursery, Top) -> add(Key, Value, infinity, Nursery, Top). +-spec add(key(), value(), expiry(), #nursery{}, pid()) -> {ok, #nursery{}}. add(Key, Value, Expiry, Nursery, Top) -> case do_add(Nursery, Key, Value, Expiry, Top) of {ok, Nursery0} -> @@ -256,6 +246,7 @@ add(Key, Value, Expiry, Nursery, Top) -> flush(Nursery0, Top) end. +-spec flush(#nursery{}, pid()) -> {ok, #nursery{}}. flush(Nursery=#nursery{ dir=Dir, max_level=MaxLevel, config=Config }, Top) -> ok = finish(Nursery, Top), {error, enoent} = file:read_file_info(filename:join(Dir, "nursery.log")), diff --git a/src/hanoidb_reader.erl b/src/hanoidb_reader.erl index 10521bd..7c2cf06 100644 --- a/src/hanoidb_reader.erl +++ b/src/hanoidb_reader.erl @@ -39,28 +39,32 @@ -record(node, {level :: non_neg_integer(), members=[] :: list(any()) }). --record(index, {file :: port(), - root :: #node{}, +-record(index, {file :: file:io_device(), + root :: #node{} | none, bloom :: term(), name :: string(), config=[] :: term() }). -type read_file() :: #index{}. --spec open(Name::string()) -> read_file(). +-spec open(Name::string()) -> {ok, read_file()} | {error, any()}. open(Name) -> open(Name, [random]). -type config() :: [sequential | folding | random | {atom(), term()}]. --spec open(Name::string(), config()) -> read_file(). +-spec open(Name::string(), config()) -> {ok, read_file()} | {error, any()}. open(Name, Config) -> case proplists:get_bool(sequential, Config) of true -> ReadBufferSize = hanoidb:get_opt(read_buffer_size, Config, 512 * 1024), - {ok, File} = file:open(Name, [raw,read,{read_ahead, ReadBufferSize},binary]), - {ok, #index{file=File, name=Name, config=Config}}; + case file:open(Name, [raw,read,{read_ahead, ReadBufferSize},binary]) of + {ok, File} -> + {ok, #index{file=File, name=Name, config=Config}}; + {error, _}=Err -> + Err + end; false -> {ok, File} = @@ -129,13 +133,15 @@ fold1(File,Fun,Acc0) -> fold0(File,Fun,Node,Acc0) end. +-spec range_fold(function(), any(), #index{}, #key_range{}) -> + {limit, any(), binary()} | {done, any()}. range_fold(Fun, Acc0, #index{file=File,root=Root}, Range) -> case lookup_node(File,Range#key_range.from_key,Root,?FIRST_BLOCK_POS) of {ok, {Pos,_}} -> - file:position(File, Pos), + {ok, _} = file:position(File, Pos), do_range_fold(Fun, Acc0, File, Range, Range#key_range.limit); {ok, Pos} -> - file:position(File, Pos), + {ok, _} = file:position(File, Pos), do_range_fold(Fun, Acc0, File, Range, Range#key_range.limit); none -> {done, Acc0} @@ -266,6 +272,8 @@ next_node(#index{file=File}=_Index) -> end_of_data end. +close(#index{file=undefined}) -> + ok; close(#index{file=File}) -> file:close(File). @@ -308,8 +316,8 @@ lookup_in_node(File,#node{members=Members},Key) -> {ok, Node} -> Result = lookup_in_node2(File, Node, Key), plain_rpc:send_reply(From, Result); - {error, _}=Error -> - plain_rpc:send_reply(From, Error) + eof -> + plain_rpc:send_reply(From, {error, eof}) end end end), @@ -339,8 +347,8 @@ lookup_in_node2(File,#node{members=Members},Key) -> case read_node(File, {Pos,Size}) of {ok, Node} -> lookup_in_node2(File, Node, Key); - {error, _}=Error -> - Error + eof -> + {error, eof} end; not_found -> not_found @@ -365,7 +373,8 @@ find_start(K, KVs) -> find_1(K, KVs). - +-spec read_node(file:io_device(), non_neg_integer() | { non_neg_integer(), non_neg_integer() }) -> + {ok, #node{}} | eof. read_node(File, {Pos, Size}) -> % error_logger:info_msg("read_node ~p ~p ~p~n", [File, Pos, Size]), diff --git a/src/hanoidb_util.erl b/src/hanoidb_util.erl index be6add6..861b673 100644 --- a/src/hanoidb_util.erl +++ b/src/hanoidb_util.erl @@ -56,9 +56,11 @@ -compile({inline, [crc_encapsulate/1, crc_encapsulate_kv_entry/2 ]}). +-spec index_file_name(string()) -> string(). index_file_name(Name) -> Name. +-spec file_exists(string()) -> boolean(). file_exists(FileName) -> case file:read_file_info(FileName) of {ok, _} -> @@ -146,6 +148,7 @@ decode_index_node(Level, Data) -> {ok, {node, Level, KVList}}. +-spec crc_encapsulate_kv_entry(binary(), expvalue()) -> iolist(). crc_encapsulate_kv_entry(Key, {Value, infinity}) -> crc_encapsulate_kv_entry(Key, Value); crc_encapsulate_kv_entry(Key, {?TOMBSTONE, TStamp}) -> % @@ -153,13 +156,13 @@ crc_encapsulate_kv_entry(Key, {?TOMBSTONE, TStamp}) -> % crc_encapsulate_kv_entry(Key, ?TOMBSTONE) -> crc_encapsulate( [?TAG_DELETED | Key] ); crc_encapsulate_kv_entry(Key, {Value, TStamp}) when is_binary(Value) -> - crc_encapsulate( [?TAG_KV_DATA2, <>, Key | Value] ); + crc_encapsulate( [?TAG_KV_DATA2, <>, Key, Value] ); crc_encapsulate_kv_entry(Key, Value) when is_binary(Value) -> - crc_encapsulate( [?TAG_KV_DATA, <<(byte_size(Key)):32/unsigned>>, Key | Value] ); + crc_encapsulate( [?TAG_KV_DATA, <<(byte_size(Key)):32/unsigned>>, Key, Value] ); crc_encapsulate_kv_entry(Key, {Pos,Len}) when Len < 16#ffffffff -> crc_encapsulate( [?TAG_POSLEN32, <>, Key] ). - +-spec crc_encapsulate_transaction( [ txspec() ], expiry() ) -> iolist(). crc_encapsulate_transaction(TransactionSpec, Expiry) -> crc_encapsulate([?TAG_TRANSACT | lists:map(fun({delete, Key}) -> @@ -169,11 +172,13 @@ crc_encapsulate_transaction(TransactionSpec, Expiry) -> end, TransactionSpec)]). +-spec crc_encapsulate( iolist() ) -> iolist(). crc_encapsulate(Blob) -> CRC = erlang:crc32(Blob), Size = erlang:iolist_size(Blob), [<< (Size):32/unsigned, CRC:32/unsigned >>, Blob, ?TAG_END]. +-spec decode_kv_list( binary() ) -> {ok, [ kventry() ]} | {partial, [kventry()], iolist()}. decode_kv_list(<>) -> decode_crc_data(Custom, [], []); decode_kv_list(<>=TermData) -> @@ -181,14 +186,13 @@ decode_kv_list(<>=TermData) -> decode_kv_list(<>) -> decode_crc_data(Custom, [], []). --spec decode_crc_data(binary(), list(), list()) -> {ok, list()} | {error, data_corruption}. +-spec decode_crc_data(binary(), list(), list()) -> {ok, [kventry()]} | {partial, [kventry()], iolist()}. decode_crc_data(<<>>, [], Acc) -> {ok, lists:reverse(Acc)}; -decode_crc_data(<<>>, _BrokenData, Acc) -> -% {error, data_corruption}; +decode_crc_data(<<>>, BrokenData, Acc) -> + {partial, lists:reverse(Acc), BrokenData}; % TODO: we *could* simply return the good parts of the data... % would that be so wrong? - {ok, lists:reverse(Acc)}; decode_crc_data(<< BinSize:32/unsigned, CRC:32/unsigned, Bin:BinSize/binary, ?TAG_END, Rest/binary >>, Broken, Acc) -> CRCTest = erlang:crc32( Bin ), if CRC == CRCTest -> @@ -203,6 +207,7 @@ decode_crc_data(Bad, Broken, Acc) -> {Skipped, MaybeGood} = find_next_value(Bad), decode_crc_data(MaybeGood, [Skipped|Broken], Acc). +-spec find_next_value(binary()) -> { binary(), binary() }. find_next_value(<<>>) -> {<<>>, <<>>}; find_next_value(Bin) -> @@ -214,6 +219,7 @@ find_next_value(Bin) -> {Bin, <<>>} end. +-spec decode_kv_data( binary() ) -> kventry(). decode_kv_data(<>) -> {Key, Value}; decode_kv_data(<>) -> diff --git a/src/hanoidb_writer.erl b/src/hanoidb_writer.erl index 33886cc..25b5783 100644 --- a/src/hanoidb_writer.erl +++ b/src/hanoidb_writer.erl @@ -42,10 +42,10 @@ -export([open/1, open/2, add/3, count/1, close/1]). -record(node, {level :: integer(), - members=[] :: [ {binary(), binary()} ], + members=[] :: [ {key(), expvalue()} ], size=0 :: integer()}). --record(state, {index_file :: port(), +-record(state, {index_file :: file:io_device() | undefined, index_file_pos :: integer(), last_node_pos :: pos_integer(), @@ -154,7 +154,7 @@ terminate(normal,_State) -> ok; terminate(_Reason, State) -> %% premature delete -> cleanup - file:close(State#state.index_file), + _ignore = file:close(State#state.index_file), file:delete(hanoidb_util:index_file_name(State#state.name)). code_change(_OldVsn, State, _Extra) -> @@ -170,7 +170,7 @@ serialize(#state{ bloom=Bloom, index_file=File, index_file_pos=Position }=State) exit({bad_position, Position, WrongPosition}) end, ok = file:close(File), - erlang:term_to_binary( { State#state{ index_file=closed }, hanoidb_bloom:encode(Bloom) } ). + erlang:term_to_binary( { State#state{ index_file=undefined }, hanoidb_bloom:encode(Bloom) } ). deserialize(Binary) -> {State, Bin} = erlang:binary_to_term(Binary), diff --git a/src/plain_rpc.erl b/src/plain_rpc.erl index 4a083a0..597fd71 100644 --- a/src/plain_rpc.erl +++ b/src/plain_rpc.erl @@ -45,7 +45,7 @@ receive_reply(MRef) -> end. send_reply({PID,Ref}, Reply) -> - erlang:send(PID, ?REPLY(Ref, Reply)), + _ = erlang:send(PID, ?REPLY(Ref, Reply)), ok. call(PID,Request) ->