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 
17 #include "vpd.hpp"
18 
19 #include "types.hpp"
20 #include "utility.hpp"
21 
22 namespace phosphor::power::regulators
23 {
24 
25 std::string DBusVPD::getValue(const std::string& inventoryPath,
26                               const std::string& keyword)
27 {
28     std::string value{};
29 
30     // Get cached keywords for the inventory path
31     KeywordMap& cachedKeywords = cache[inventoryPath];
32 
33     // Check if the keyword value is already cached
34     auto it = cachedKeywords.find(keyword);
35     if (it != cachedKeywords.end())
36     {
37         value = it->second;
38     }
39     else
40     {
41         // Get keyword value from D-Bus interface/property.  The property name
42         // is normally the same as the VPD keyword name.  However, the CCIN
43         // keyword is stored in the Model property.
44         std::string property{(keyword == "CCIN") ? "Model" : keyword};
45         util::getProperty(ASSET_IFACE, property, inventoryPath,
46                           INVENTORY_MGR_IFACE, bus, value);
47 
48         // Cache keyword value
49         cachedKeywords[keyword] = value;
50     }
51 
52     return value;
53 }
54 
55 } // namespace phosphor::power::regulators
56