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 #pragma once
17 
18 #include "action.hpp"
19 #include "action_environment.hpp"
20 
21 #include <cstdint>
22 #include <string>
23 #include <vector>
24 
25 namespace phosphor::power::regulators
26 {
27 
28 /**
29  * @class CompareVPDAction
30  *
31  * Compares a VPD (Vital Product Data) keyword value to an expected value.
32  *
33  * Implements the compare_vpd action in the JSON config file.
34  */
35 class CompareVPDAction : public Action
36 {
37   public:
38     // Specify which compiler-generated methods we want
39     CompareVPDAction() = delete;
40     CompareVPDAction(const CompareVPDAction&) = delete;
41     CompareVPDAction(CompareVPDAction&&) = delete;
42     CompareVPDAction& operator=(const CompareVPDAction&) = delete;
43     CompareVPDAction& operator=(CompareVPDAction&&) = delete;
44     virtual ~CompareVPDAction() = default;
45 
46     /**
47      * Constructor.
48      *
49      * @param fru Field-Replaceable Unit (FRU). Specify the D-Bus inventory path
50      *            of the FRU.
51      * @param keyword VPD keyword. Specify one of the following: "CCIN",
52      *                "Manufacturer", "Model", "PartNumber".
53      * @param value Expected value
54      */
CompareVPDAction(const std::string & fru,const std::string & keyword,const std::vector<uint8_t> & value)55     explicit CompareVPDAction(const std::string& fru,
56                               const std::string& keyword,
57                               const std::vector<uint8_t>& value) :
58         fru{fru}, keyword{keyword}, value{value}
59     {}
60 
61     /**
62      * Executes this action.
63      *
64      * Compares the actual VPD keyword value to the expected value.
65      *
66      * Throws an exception if an error occurs.
67      *
68      * @param environment action execution environment
69      * @return true if the keyword value equals the expected value, otherwise
70      *         returns false
71      */
72     virtual bool execute(ActionEnvironment& environment) override;
73 
74     /**
75      * Returns the Field-Replaceable Unit (FRU).
76      *
77      * @return FRU
78      */
getFRU() const79     const std::string& getFRU() const
80     {
81         return fru;
82     }
83 
84     /**
85      * Returns the VPD keyword.
86      *
87      * @return keyword
88      */
getKeyword() const89     const std::string& getKeyword() const
90     {
91         return keyword;
92     }
93 
94     /**
95      * Returns the expected value.
96      *
97      * @return value
98      */
getValue() const99     const std::vector<uint8_t>& getValue() const
100     {
101         return value;
102     }
103 
104     /**
105      * Returns a string description of this action.
106      *
107      * @return description of action
108      */
109     virtual std::string toString() const override;
110 
111   private:
112     /**
113      * Field-Replaceable Unit (FRU) for this action.
114      *
115      * The D-Bus inventory path of the FRU.
116      */
117     const std::string fru{};
118 
119     /**
120      * VPD keyword.
121      */
122     const std::string keyword{};
123 
124     /**
125      * Expected value.
126      */
127     const std::vector<uint8_t> value{};
128 };
129 
130 } // namespace phosphor::power::regulators
131