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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_mgmt_wm_queue).
-export([init/2, resource_exists/2, to_json/2,
content_types_provided/2, content_types_accepted/2,
is_authorized/2, allowed_methods/2, accept_content/2,
delete_resource/2, queue/1, queue/2]).
-export([variances/2]).
-include_lib("rabbitmq_management_agent/include/rabbit_mgmt_records.hrl").
-include_lib("amqp_client/include/amqp_client.hrl").
%%--------------------------------------------------------------------
init(Req, _State) ->
{cowboy_rest, rabbit_mgmt_headers:set_common_permission_headers(Req, ?MODULE), #context{}}.
variances(Req, Context) ->
{[<<"accept-encoding">>, <<"origin">>], Req, Context}.
content_types_provided(ReqData, Context) ->
{rabbit_mgmt_util:responder_map(to_json), ReqData, Context}.
content_types_accepted(ReqData, Context) ->
{[{'*', accept_content}], ReqData, Context}.
allowed_methods(ReqData, Context) ->
{[<<"HEAD">>, <<"GET">>, <<"PUT">>, <<"DELETE">>, <<"OPTIONS">>], ReqData, Context}.
resource_exists(ReqData, Context) ->
{case queue(ReqData) of
not_found -> false;
_ -> true
end, ReqData, Context}.
to_json(ReqData, Context) ->
try
case rabbit_mgmt_util:disable_stats(ReqData) of
false ->
[Q] = rabbit_mgmt_db:augment_queues(
[queue(ReqData)], rabbit_mgmt_util:range_ceil(ReqData),
full),
Payload = rabbit_mgmt_format:clean_consumer_details(
rabbit_mgmt_format:strip_pids(Q)),
rabbit_mgmt_util:reply(ensure_defaults(Payload), ReqData, Context);
true ->
rabbit_mgmt_util:reply(rabbit_mgmt_format:strip_pids(queue(ReqData)),
ReqData, Context)
end
catch
{error, invalid_range_parameters, Reason} ->
rabbit_mgmt_util:bad_request(iolist_to_binary(Reason), ReqData, Context)
end.
accept_content(ReqData, Context) ->
Name = rabbit_mgmt_util:id(queue, ReqData),
rabbit_mgmt_util:direct_request(
'queue.declare',
fun rabbit_mgmt_format:format_accept_content/1,
[{queue, Name}], "Declare queue error: ~s", ReqData, Context).
delete_resource(ReqData, Context) ->
%% We need to retrieve manually if-unused and if-empty, as the HTTP API uses '-'
%% while the record uses '_'
IfUnused = <<"true">> =:= rabbit_mgmt_util:qs_val(<<"if-unused">>, ReqData),
IfEmpty = <<"true">> =:= rabbit_mgmt_util:qs_val(<<"if-empty">>, ReqData),
Name = rabbit_mgmt_util:id(queue, ReqData),
rabbit_mgmt_util:direct_request(
'queue.delete',
fun rabbit_mgmt_format:format_accept_content/1,
[{queue, Name},
{if_unused, IfUnused},
{if_empty, IfEmpty}], "Delete queue error: ~s", ReqData, Context).
is_authorized(ReqData, Context) ->
rabbit_mgmt_util:is_authorized_vhost(ReqData, Context).
%%--------------------------------------------------------------------
%% this is here to ensure certain data points are always there. When a queue
%% is moved there can be transient periods where certain advanced metrics aren't
%% yet available on the new node.
ensure_defaults(Payload0) ->
case lists:keyfind(garbage_collection, 1, Payload0) of
{_K, _V} -> Payload0;
false ->
[{garbage_collection,
[{max_heap_size,-1},
{min_bin_vheap_size,-1},
{min_heap_size,-1},
{fullsweep_after,-1},
{minor_gcs,-1}]} | Payload0]
end.
queue(ReqData) ->
case rabbit_mgmt_util:vhost(ReqData) of
not_found -> not_found;
VHost -> queue(VHost, rabbit_mgmt_util:id(queue, ReqData))
end.
queue(VHost, QName) ->
Name = rabbit_misc:r(VHost, queue, QName),
case rabbit_amqqueue:lookup(Name) of
{ok, Q} -> rabbit_mgmt_format:queue(Q);
{error, not_found} -> not_found
end.
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