1 /**
2  * Copyright © 2020 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 
17 #include "presence_service.hpp"
18 
19 #include "types.hpp"
20 #include "utility.hpp"
21 
22 namespace phosphor::power::regulators
23 {
24 
25 bool DBusPresenceService::isPresent(const std::string& inventoryPath)
26 {
27     bool present{false};
28 
29     // Try to find cached presence value
30     auto it = cache.find(inventoryPath);
31     if (it != cache.end())
32     {
33         present = it->second;
34     }
35     else
36     {
37         // Get presence from D-Bus interface/property
38         util::getProperty(INVENTORY_IFACE, PRESENT_PROP, inventoryPath,
39                           INVENTORY_MGR_IFACE, bus, present);
40 
41         // Cache presence value
42         cache[inventoryPath] = present;
43     }
44 
45     return present;
46 }
47 
48 } // namespace phosphor::power::regulators
49