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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License
%% at https://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and
%% limitations under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is GoPivotal, Inc.
%% Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_looking_glass).
-ignore_xref([{lg, trace, 4}]).
-ignore_xref([{maps, from_list, 1}]).
-export([boot/0]).
-export([connections/0]).
boot() ->
case os:getenv("RABBITMQ_TRACER") of
false ->
ok;
Value ->
Input = parse_value(Value),
rabbit_log:info(
"Enabling Looking Glass profiler, input value: ~p",
[Input]
),
{ok, _} = application:ensure_all_started(looking_glass),
lg:trace(
Input,
lg_file_tracer,
"traces.lz4",
maps:from_list([
{mode, profile},
{process_dump, true},
{running, true},
{send, true}]
)
)
end.
parse_value(Value) ->
[begin
[Mod, Fun] = string:tokens(C, ":"),
{callback, list_to_atom(Mod), list_to_atom(Fun)}
end || C <- string:tokens(Value, ",")].
connections() ->
Pids = [Pid || {{conns_sup, _}, Pid} <- ets:tab2list(ranch_server)],
['_', {scope, Pids}].
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