1 /**
2 * Copyright © 2021 IBM 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 #include "request_target_base.hpp"
17
18 #include "../manager.hpp"
19 #include "../zone.hpp"
20 #include "group.hpp"
21
22 #include <nlohmann/json.hpp>
23 #include <phosphor-logging/lg2.hpp>
24
25 #include <algorithm>
26
27 namespace phosphor::fan::control::json
28 {
29
30 using json = nlohmann::json;
31
RequestTargetBase(const json & jsonObj,const std::vector<Group> & groups)32 RequestTargetBase::RequestTargetBase(const json& jsonObj,
33 const std::vector<Group>& groups) :
34 ActionBase(jsonObj, groups)
35 {
36 // There are no JSON configuration parameters for this action
37 }
38
run(Zone & zone)39 void RequestTargetBase::run(Zone& zone)
40 {
41 uint64_t base = 0;
42 for (const auto& group : _groups)
43 {
44 for (const auto& member : group.getMembers())
45 {
46 try
47 {
48 auto value = Manager::getObjValueVariant(
49 member, group.getInterface(), group.getProperty());
50 if (auto intPtr = std::get_if<int64_t>(&value))
51 {
52 // Throw out any negative values as those are not valid
53 // to use as a fan target base
54 if (*intPtr < 0)
55 {
56 continue;
57 }
58 base = std::max(base, static_cast<uint64_t>(*intPtr));
59 }
60 else if (auto dblPtr = std::get_if<double>(&value))
61 {
62 // Throw out any negative values as those are not valid
63 // to use as a fan target base
64 if (*dblPtr < 0)
65 {
66 continue;
67 }
68 // Precision of a double not a concern with fan targets
69 base = std::max(base, static_cast<uint64_t>(*dblPtr));
70 }
71 else
72 {
73 // Unsupported group member type for this action
74 lg2::error(
75 "Action {ACTION_NAME}: Unsupported group member type "
76 "given. [object = {MEMBER} : {GROUP_INTERFACE} : {GROUP_PROPERTY}]",
77 "ACTION_NAME", getName(), "MEMBER", member,
78 "GROUP_INTERFACE", group.getInterface(),
79 "GROUP_PROPERTY", group.getProperty());
80 }
81 }
82 catch (const std::out_of_range& oore)
83 {
84 // Property value not found, base request target unchanged
85 }
86 }
87 }
88
89 // A request target base of 0 defaults to the current target
90 zone.setRequestTargetBase(base);
91 }
92
93 } // namespace phosphor::fan::control::json
94