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%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% 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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