rabbitmq-server/deps/rabbit/src/rabbit_connection_tracking_...

79 lines
2.9 KiB
Erlang

%% 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) 2007-2025 Broadcom. All Rights Reserved. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. All rights reserved.
%%
-module(rabbit_connection_tracking_handler).
%% This module keeps track of connection creation and termination events
%% on its local node. The primary goal here is to decouple connection
%% tracking from rabbit_reader in rabbit_common.
%%
%% Events from other nodes are ignored.
-behaviour(gen_event).
-export([init/1, handle_call/2, handle_event/2, handle_info/2,
terminate/2, code_change/3]).
%% for compatibility with previous versions of CLI tools
-export([close_connections/3]).
-include_lib("rabbit_common/include/rabbit.hrl").
-include_lib("rabbit_common/include/logging.hrl").
-rabbit_boot_step({?MODULE,
[{description, "connection tracking event handler"},
{mfa, {gen_event, add_handler,
[rabbit_event, ?MODULE, []]}},
{cleanup, {gen_event, delete_handler,
[rabbit_event, ?MODULE, []]}},
{requires, [tracking_metadata_store]},
{enables, recovery}]}).
%%
%% API
%%
init([]) ->
logger:set_process_metadata(#{domain => ?RMQLOG_DOMAIN_CONN}),
{ok, []}.
handle_event(#event{type = connection_created, props = Details}, State) ->
ok = rabbit_connection_tracking:update_tracked({connection_created, Details}),
{ok, State};
handle_event(#event{type = connection_closed, props = Details}, State) ->
ok = rabbit_connection_tracking:update_tracked({connection_closed, Details}),
{ok, State};
handle_event(#event{type = vhost_deleted, props = Details}, State) ->
ok = rabbit_connection_tracking:update_tracked({vhost_deleted, Details}),
{ok, State};
%% Note: under normal circumstances this will be called immediately
%% after the vhost_deleted above. Therefore we should be careful about
%% what we log and be more defensive.
handle_event(#event{type = vhost_down, props = Details}, State) ->
ok = rabbit_connection_tracking:update_tracked({vhost_down, Details}),
{ok, State};
handle_event(#event{type = user_deleted, props = Details}, State) ->
ok = rabbit_connection_tracking:update_tracked({user_deleted, Details}),
{ok, State};
handle_event(_Event, State) ->
{ok, State}.
handle_call(_Request, State) ->
{ok, not_understood, State}.
handle_info(_Info, State) ->
{ok, State}.
terminate(_Arg, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
close_connections(Tracked, Message, Delay) ->
rabbit_connection_tracking:close_connections(Tracked, Message, Delay).