1 #pragma once
2 
3 #include "bios_attribute.hpp"
4 #include "bios_table.hpp"
5 
6 #include <functional>
7 #include <iostream>
8 #include <memory>
9 #include <nlohmann/json.hpp>
10 #include <optional>
11 #include <set>
12 #include <string>
13 #include <vector>
14 
15 #include "bios_table.h"
16 
17 namespace pldm
18 {
19 namespace responder
20 {
21 namespace bios
22 {
23 
24 /** @class BIOSConfig
25  *  @brief Manager BIOS Attributes
26  */
27 class BIOSConfig
28 {
29   public:
30     BIOSConfig() = delete;
31     BIOSConfig(const BIOSConfig&) = delete;
32     BIOSConfig(BIOSConfig&&) = delete;
33     BIOSConfig& operator=(const BIOSConfig&) = delete;
34     BIOSConfig& operator=(BIOSConfig&&) = delete;
35     ~BIOSConfig() = default;
36 
37     /** @brief Construct BIOSConfig
38      *  @param[in] jsonDir - The directory where json file exists
39      *  @param[in] tableDir - The directory where the persistent table is placed
40      *  @param[in] dbusHandler - Dbus Handler
41      */
42     explicit BIOSConfig(const char* jsonDir, const char* tableDir,
43                         DBusHandler* const dbusHandler);
44 
45     /** @brief Set attribute value on dbus and attribute value table
46      *  @param[in] entry - attribute value entry
47      *  @param[in] size - size of the attribute value entry
48      *  @return pldm_completion_codes
49      */
50     int setAttrValue(const void* entry, size_t size);
51 
52     /** @brief Remove the persistent tables */
53     void removeTables();
54 
55     /** @brief Build bios tables(string,attribute,attribute value table)*/
56     void buildTables();
57 
58     /** @brief Get BIOS table of specified type
59      *  @param[in] tableType - The table type
60      *  @return The bios table, std::nullopt if the table is unaviliable
61      */
62     std::optional<Table> getBIOSTable(pldm_bios_table_types tableType);
63 
64   private:
65     const fs::path jsonDir;
66     const fs::path tableDir;
67     DBusHandler* const dbusHandler;
68 
69     // vector persists all attributes
70     using BIOSAttributes = std::vector<std::unique_ptr<BIOSAttribute>>;
71     BIOSAttributes biosAttributes;
72 
73     /** @brief Construct an attribute and persist it
74      *  @tparam T - attribute type
75      *  @param[in] entry - json entry
76      */
77     template <typename T>
78     void constructAttribute(const Json& entry)
79     {
80         try
81         {
82             biosAttributes.push_back(std::make_unique<T>(entry, dbusHandler));
83         }
84         catch (const std::exception& e)
85         {
86             std::cerr << "Constructs Attribute Error, " << e.what()
87                       << std::endl;
88         }
89     }
90 
91     /** Construct attributes and persist them */
92     void constructAttributes();
93 
94     using ParseHandler = std::function<void(const Json& entry)>;
95 
96     /** @brief Helper function to parse json
97      *  @param[in] filePath - Path of json file
98      *  @param[in] handler - Handler to process each entry in the json
99      */
100     void load(const fs::path& filePath, ParseHandler handler);
101 
102     /** @brief Build String Table and persist it
103      *  @return The built string table, std::nullopt if it fails.
104      */
105     std::optional<Table> buildAndStoreStringTable();
106 
107     /** @brief Build attr table and attr value table and persist them
108      *  @param[in] stringTable - The string Table
109      */
110     void buildAndStoreAttrTables(const Table& stringTable);
111 
112     /** @brief Persist the table
113      *  @param[in] path - Path to persist the table
114      *  @param[in] table - The table
115      */
116     void storeTable(const fs::path& path, const Table& table);
117 
118     /** @brief Load bios table to ram
119      *  @param[in] path - Path of the table
120      *  @return The table, std::nullopt if loading fails
121      */
122     std::optional<Table> loadTable(const fs::path& path);
123 };
124 
125 } // namespace bios
126 } // namespace responder
127 } // namespace pldm