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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) 2018-2020 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_event_exchange_decorator).
-include_lib("rabbit_common/include/rabbit.hrl").
-include("rabbit_event_exchange.hrl").
-rabbit_boot_step({?MODULE,
[{description, "event exchange decorator"},
{mfa, {rabbit_registry, register,
[exchange_decorator, <<"event">>, ?MODULE]}},
{requires, rabbit_registry},
{cleanup, {rabbit_registry, unregister,
[exchange_decorator, <<"event">>]}},
{enables, recovery}]}).
-behaviour(rabbit_exchange_decorator).
-export([description/0, serialise_events/1]).
-export([create/2, delete/3, policy_changed/2,
add_binding/3, remove_bindings/3, route/2, active_for/1]).
description() ->
[{description, <<"Event exchange decorator">>}].
serialise_events(_) -> false.
create(_, _) ->
ok.
delete(_, _, _) ->
ok.
policy_changed(_, _) ->
ok.
add_binding(transaction, #exchange{name = #resource{name = ?EXCH_NAME} = Name},
_Bs) ->
case rabbit_binding:list_for_source(Name) of
[_] ->
rpc:abcast(rabbit_event, {event_exchange, added_first_binding}),
ok;
_ ->
ok
end;
add_binding(_, _X, _Bs) ->
ok.
remove_bindings(transaction, #exchange{name = #resource{name = ?EXCH_NAME} = Name},
_Bs) ->
case rabbit_binding:list_for_source(Name) of
[] ->
rpc:abcast(rabbit_event, {event_exchange, removed_last_binding}),
ok;
_ ->
ok
end;
remove_bindings(_, _X, _Bs) ->
ok.
route(_, _) -> [].
active_for(_) -> noroute.
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