1 // SPDX-License-Identifier: Apache-2.0
2 // SPDX-FileCopyrightText: Copyright OpenBMC Authors
3 #include "registries.hpp"
4
5 // We need the registries_selector pulled into some cpp part so that the
6 // registration hooks run.
7 // NOLINTNEXTLINE(misc-include-cleaner)
8 #include "registries_selector.hpp"
9 #include "str_utility.hpp"
10
11 #include <algorithm>
12 #include <cstring>
13 #include <functional>
14 #include <map>
15 #include <optional>
16 #include <ranges>
17 #include <span>
18 #include <string>
19 #include <string_view>
20 #include <utility>
21 #include <vector>
22
23 namespace redfish::registries
24 {
25
allRegistries()26 auto allRegistries() -> std::map<std::string, RegistryEntry>&
27 {
28 static std::map<std::string, RegistryEntry> registries;
29 return registries;
30 }
31
getRegistryFromPrefix(const std::string & registryName)32 auto getRegistryFromPrefix(const std::string& registryName)
33 -> std::optional<RegistryEntryRef>
34 {
35 auto& registries = allRegistries();
36 if (auto it = registries.find(registryName); it != registries.end())
37 {
38 return std::ref(it->second);
39 }
40
41 return std::nullopt;
42 }
43
getRegistryMessagesFromPrefix(const std::string & registryName)44 auto getRegistryMessagesFromPrefix(const std::string& registryName)
45 -> MessageEntries
46 {
47 auto registry = getRegistryFromPrefix(registryName);
48 if (!registry)
49 {
50 return {};
51 }
52
53 return registry->get().entries;
54 }
55
getMessageFromRegistry(const std::string & messageKey,std::span<const MessageEntry> registry)56 const Message* getMessageFromRegistry(const std::string& messageKey,
57 std::span<const MessageEntry> registry)
58 {
59 std::span<const MessageEntry>::iterator messageIt = std::ranges::find_if(
60 registry, [&messageKey](const MessageEntry& messageEntry) {
61 return std::strcmp(messageEntry.first, messageKey.c_str()) == 0;
62 });
63 if (messageIt != registry.end())
64 {
65 return &messageIt->second;
66 }
67
68 return nullptr;
69 }
70
getMessageComponents(std::string_view message)71 std::optional<MessageId> getMessageComponents(std::string_view message)
72 {
73 // Redfish Message are in the form
74 // RegistryName.MajorVersion.MinorVersion.MessageKey
75 std::vector<std::string> fields;
76 fields.reserve(4);
77 bmcweb::split(fields, message, '.');
78 if (fields.size() != 4)
79 {
80 return std::nullopt;
81 }
82
83 return MessageId(std::move(fields[0]), std::move(fields[1]),
84 std::move(fields[2]), std::move(fields[3]));
85 }
86
getMessage(std::string_view messageID)87 const Message* getMessage(std::string_view messageID)
88 {
89 std::optional<MessageId> msgComponents = getMessageComponents(messageID);
90 if (!msgComponents)
91 {
92 return nullptr;
93 }
94
95 // Find the right registry and check it for the MessageKey
96 return getMessageFromRegistry(
97 msgComponents->messageKey,
98 getRegistryMessagesFromPrefix(msgComponents->registryName));
99 }
100
101 } // namespace redfish::registries
102