-export(
[ of_beam_stats/1
, of_beam_stats/2
- , to_bin/1
- , path_to_bin/1
+ , to_iolist/1
+ , path_to_iolist/1
, node_id_to_bin/1
]).
+-define(SCHEMA_VERSION, <<"beam_stats_v0">>).
-define(T, #?MODULE).
-type t() ::
++ of_processes(Processes, NodeID, Ts),
lists:map(fun path_prefix_schema_version/1, Msgs).
--spec to_bin(t()) ->
- binary().
-to_bin(
+-spec to_iolist(t()) ->
+ iolist().
+to_iolist(
?T
{ path = Path
, value = Value
, timestamp = Timestamp
}
) ->
- PathBin = path_to_bin(Path),
+ PathIOList = path_to_iolist(Path),
ValueBin = integer_to_binary(Value),
TimestampInt = timestamp_to_integer(Timestamp),
TimestampBin = integer_to_binary(TimestampInt),
- <<PathBin/binary, " ", ValueBin/binary, " ", TimestampBin/binary>>.
+ [PathIOList, <<" ">>, ValueBin, <<" ">>, TimestampBin].
--spec path_to_bin([binary()]) ->
- binary().
-path_to_bin(Path) ->
- bin_join(Path, <<".">>).
+-spec path_to_iolist([binary()]) ->
+ iolist().
+path_to_iolist(Path) ->
+ list_interleave(Path, <<".">>).
-spec node_id_to_bin(node()) ->
binary().
-spec path_prefix_schema_version(t()) ->
t().
path_prefix_schema_version(?T{}=T) ->
- path_prefix(T, schema_version()).
+ path_prefix(T, ?SCHEMA_VERSION).
-spec path_prefix(t(), binary()) ->
t().
path_prefix(?T{path=Path}=T, <<Prefix/binary>>) ->
T?T{path = [Prefix | Path]}.
--spec schema_version() ->
- binary().
-schema_version() ->
- <<"beam_stats_v0">>.
-
--spec bin_join([binary()], binary()) ->
- binary().
-bin_join([] , <<_/binary>> ) -> <<>>;
-bin_join([<<B/binary>> | []] , <<_/binary>> ) -> B;
-bin_join([<<B/binary>> | [_|_]=Bins], <<Sep/binary>>) ->
- BinsBin = bin_join(Bins, Sep),
- <<B/binary, Sep/binary, BinsBin/binary>>.
+-spec list_interleave([A], A) ->
+ [A].
+list_interleave([], _) ->
+ [];
+list_interleave([X], _) ->
+ [X];
+list_interleave([X|Xs], Sep) ->
+ [X, Sep | list_interleave(Xs, Sep)].
-spec timestamp_to_integer(erlang:timestamp()) ->
non_neg_integer().