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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_node).
-export([init/2, to_json/2, content_types_provided/2, is_authorized/2]).
-export([resource_exists/2]).
-export([variances/2]).
-include_lib("rabbitmq_management_agent/include/rabbit_mgmt_records.hrl").
-include_lib("rabbit_common/include/rabbit.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}.
resource_exists(ReqData, Context) ->
{case node0(ReqData) of
not_found -> false;
_ -> true
end, ReqData, Context}.
to_json(ReqData, Context) ->
rabbit_mgmt_util:reply(node0(ReqData), ReqData, Context).
is_authorized(ReqData, Context) ->
rabbit_mgmt_util:is_authorized_monitor(ReqData, Context).
%%--------------------------------------------------------------------
node0(ReqData) ->
Node = list_to_atom(binary_to_list(rabbit_mgmt_util:id(node, ReqData))),
[Data] = node_data(Node, ReqData),
augment(ReqData, Node, Data).
augment(ReqData, Node, Data) ->
lists:foldl(fun (Key, DataN) -> augment(Key, ReqData, Node, DataN) end,
Data, [memory, binary]).
augment(Key, ReqData, Node, Data) ->
case rabbit_mgmt_util:qs_val(list_to_binary(atom_to_list(Key)), ReqData) of
<<"true">> -> Res = case rpc:call(Node, rabbit_vm, Key, [], infinity) of
{badrpc, _} -> not_available;
Result -> Result
end,
[{Key, Res} | Data];
_ -> Data
end.
node_data(Node, ReqData) ->
S = rabbit_mnesia:status(),
Nodes = proplists:get_value(nodes, S),
Running = proplists:get_value(running_nodes, S),
Type = find_type(Node, Nodes),
Basic = [[{name, Node}, {running, lists:member(Node, Running)}, {type, Type}]],
case rabbit_mgmt_util:disable_stats(ReqData) of
false ->
rabbit_mgmt_db:augment_nodes(Basic, rabbit_mgmt_util:range_ceil(ReqData));
true ->
Basic
end.
find_type(Node, [{Type, Nodes} | Rest]) ->
case lists:member(Node, Nodes) of
true -> Type;
false -> find_type(Node, Rest)
end.
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