Move schema version definition to a macro.

[beam_stats.git] / src / beam_stats_msg_graphite.erl

diff --git a/src/beam_stats_msg_graphite.erl b/src/beam_stats_msg_graphite.erl
index d33e450..bd5f3b4 100644 (file)
--- a/src/beam_stats_msg_graphite.erl
+++ b/src/beam_stats_msg_graphite.erl
@@ -19,6 +19,7 @@
     , node_id_to_bin/1
     ]).
 
+-define(SCHEMA_VERSION, <<"beam_stats_v0">>).
 -define(T, #?MODULE).
 
 -type t() ::
@@ -97,22 +98,19 @@ node_id_to_bin(NodeID) ->
 -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 interleave(iolist(), iodata()) ->
-    iolist().
-interleave([], _) -> [];
-interleave([X], _) -> [X];
+-spec interleave([A], A) ->
+    [A].
+interleave([], _) ->
+    [];
+interleave([X], _) ->
+    [X];
 interleave([X|Xs], Sep) ->
     [X, Sep | interleave(Xs, Sep)].