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rabbit_common
3.5.6
4.2.1
4.2.0
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4.1.5
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4.1.5-rc.2
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3.11.18
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3.10.12
3.10.11
3.10.10
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3.9.16
3.9.15
3.9.11
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3.9.9
3.9.8
3.9.7
3.9.6
3.9.5
3.9.4
3.9.3
3.9.2
3.9.1
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3.8.31
3.8.30
3.8.26
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3.8.24
3.8.23
3.8.22
3.8.21
3.8.20
3.8.19
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3.8.12-rc.2
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3.8.9
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3.8.7
3.8.6
3.8.6-rc.2
3.8.6-rc.1
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3.8.5-rc.2
3.8.5-rc.1
3.8.4
3.8.4-rc.3
3.8.4-rc.1
3.8.3
3.8.3-rc.2
3.8.3-rc.1
3.8.2
3.8.2-rc.1
3.8.1
3.8.1-rc.1
3.8.0
3.8.0-rc.3
3.8.0-rc.2
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3.7.28
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3.7.27-rc.2
3.7.27-rc.1
3.7.26
3.7.25
3.7.25-rc.1
3.7.24
3.7.24-rc.2
3.7.24-rc.1
3.7.23
3.7.23-rc.1
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3.7.22-rc.1
3.7.21
3.7.20
3.7.20-rc.2
3.7.20-rc.1
3.7.19
3.7.18
3.7.18-rc.1
3.7.17
3.7.17-rc.3
3.7.17-rc.2
3.7.17-rc.1
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3.7.16
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3.7.16-rc.4
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3.7.16-rc.3
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3.7.16-rc.2
retired
3.7.16-rc.1
retired
3.7.16-beta.1
3.7.15
3.7.14
3.7.14-rc.2
3.7.14-rc.1
3.7.13
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3.7.13-rc.1
3.7.12
3.7.12-rc.2
3.7.12-rc.1
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3.7.11-rc.2
3.7.11-rc.1
3.7.10-rc.4
3.7.10-rc.3
3.7.10-rc.2
3.7.10-rc.1
3.7.9
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3.7.9-rc.2
3.7.8
3.7.8-rc.4
3.7.8-rc.3
3.7.8-rc.2
3.7.8-rc.1
3.7.7
3.7.7-rc.2
3.7.7-rc.1
3.7.6
3.7.6-rc.2
3.7.6-rc.1
3.7.5
3.7.5-rc.1
3.7.4
3.7.4-rc.4
3.7.4-rc.3
3.7.4-rc.2
3.7.4-rc.1
3.7.3
3.7.3-rc.2
3.7.3-rc.1
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3.7.1
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3.7.0-alpha.544
3.7.0-alpha.542
3.6.16
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3.6.15-rc.1
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3.6.12
3.6.11
3.6.10
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3.6.8
3.6.7
3.6.7-pre.1
3.5.6
3.5.0
3.4.0
3.3.5
3.0.2
0.0.0-rc.1
Modules shared by rabbitmq-server and rabbitmq-erlang-client
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Files
src/rabbit_queue_decorator.erl
%% 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 http://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) 2007-2015 Pivotal Software, Inc. All rights reserved.
%%
-module(rabbit_queue_decorator).
-include("rabbit.hrl").
-export([select/1, set/1, register/2, unregister/1]).
%%----------------------------------------------------------------------------
-ifdef(use_specs).
-callback startup(rabbit_types:amqqueue()) -> 'ok'.
-callback shutdown(rabbit_types:amqqueue()) -> 'ok'.
-callback policy_changed(rabbit_types:amqqueue(), rabbit_types:amqqueue()) ->
'ok'.
-callback active_for(rabbit_types:amqqueue()) -> boolean().
%% called with Queue, MaxActivePriority, IsEmpty
-callback consumer_state_changed(
rabbit_types:amqqueue(), integer(), boolean()) -> 'ok'.
-else.
-export([behaviour_info/1]).
behaviour_info(callbacks) ->
[{startup, 1}, {shutdown, 1}, {policy_changed, 2},
{active_for, 1}, {consumer_state_changed, 3}];
behaviour_info(_Other) ->
undefined.
-endif.
%%----------------------------------------------------------------------------
select(Modules) ->
[M || M <- Modules, code:which(M) =/= non_existing].
set(Q) -> Q#amqqueue{decorators = [D || D <- list(), D:active_for(Q)]}.
list() -> [M || {_, M} <- rabbit_registry:lookup_all(queue_decorator)].
register(TypeName, ModuleName) ->
rabbit_registry:register(queue_decorator, TypeName, ModuleName),
[maybe_recover(Q) || Q <- rabbit_amqqueue:list()],
ok.
unregister(TypeName) ->
rabbit_registry:unregister(queue_decorator, TypeName),
[maybe_recover(Q) || Q <- rabbit_amqqueue:list()],
ok.
maybe_recover(Q = #amqqueue{name = Name,
decorators = Decs}) ->
#amqqueue{decorators = Decs1} = set(Q),
Old = lists:sort(select(Decs)),
New = lists:sort(select(Decs1)),
case New of
Old -> ok;
_ -> [M:startup(Q) || M <- New -- Old],
rabbit_amqqueue:update_decorators(Name)
end.