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James Feist98b704e2019-06-03 16:24:53 -07001/*
2// Copyright (c) 2019 Intel Corporation
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8// http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15*/
16
17#pragma once
18
19#include <sdbusplus/bus.hpp>
20#include <sdbusplus/bus/match.hpp>
Patrick Venturea83a3ec2020-08-04 09:52:05 -070021
James Feist98b704e2019-06-03 16:24:53 -070022#include <set>
23
Patrick Venturea0764872020-08-08 07:48:43 -070024namespace pid_control
25{
James Feist98b704e2019-06-03 16:24:53 -070026/*
27 * DbusPassiveRedundancy monitors the fan redundancy interface via dbus match
28 * for changes. When the "Status" property changes to Failed, all sensors in
29 * the interface's "Collection" property are added to the failed member. This
30 * set can then be queried by a sensor to see if they are part of a failed
31 * redundancy collection. When this happens, they get marked as failed.
32 */
33
34class DbusPassiveRedundancy
35{
36 public:
Patrick Venture83a2c3b2020-08-03 11:19:28 -070037 explicit DbusPassiveRedundancy(sdbusplus::bus::bus& bus);
James Feist98b704e2019-06-03 16:24:53 -070038 const std::set<std::string>& getFailed(void);
39
40 private:
41 void populateFailures(void);
42
43 sdbusplus::bus::match::match match;
44 std::set<std::string> failed;
45 sdbusplus::bus::bus& passiveBus;
46};
Patrick Venturea0764872020-08-08 07:48:43 -070047
48} // namespace pid_control