src/passage_sampler_null.erl

%% @copyright 2017 Takeru Ohta <phjgt308@gmail.com>
%%
%% @doc TODO
%%
-module(passage_sampler_null).

-behaviour(passage_sampler).

%%------------------------------------------------------------------------------
%% Exported API
%%------------------------------------------------------------------------------
-export([new/0]).

%%------------------------------------------------------------------------------
%% 'passage_sampler' Callback API
%%------------------------------------------------------------------------------
-export([is_sampled/3]).

%%------------------------------------------------------------------------------
%% Exported Functions
%%------------------------------------------------------------------------------
-spec new() -> passage_sampler:sampler().
new() ->
    passage_sampler:new(?MODULE, undefined).

%%------------------------------------------------------------------------------
%% 'passage_sampler' Callback Functions
%%------------------------------------------------------------------------------
is_sampled(_State, _OperationName, _Tags) ->
    false.