1 #include "config.h"
2 
3 #include "elog_watch.hpp"
4 
5 #include "dump_internal.hpp"
6 #include "dump_serialize.hpp"
7 #include "errors_map.hpp"
8 #include "xyz/openbmc_project/Dump/Create/error.hpp"
9 
10 #include <cereal/cereal.hpp>
11 #include <phosphor-logging/elog.hpp>
12 #include <phosphor-logging/lg2.hpp>
13 #include <sdbusplus/exception.hpp>
14 
15 #include <fstream>
16 
17 // Register class version with Cereal
18 CEREAL_CLASS_VERSION(phosphor::dump::elog::Watch, CLASS_VERSION)
19 
20 namespace phosphor
21 {
22 namespace dump
23 {
24 namespace elog
25 {
26 
27 constexpr auto LOG_PATH = "/xyz/openbmc_project/logging";
28 using Message = std::string;
29 using Attributes = std::variant<Message>;
30 using AttributeName = std::string;
31 using AttributeMap = std::map<AttributeName, Attributes>;
32 using PropertyName = std::string;
33 using PropertyMap = std::map<PropertyName, AttributeMap>;
34 
35 Watch::Watch(sdbusplus::bus_t& bus, IMgr& iMgr) :
36     iMgr(iMgr),
37     addMatch(bus,
38              sdbusplus::bus::match::rules::interfacesAdded() +
39                  sdbusplus::bus::match::rules::path_namespace(OBJ_LOGGING),
40              std::bind(std::mem_fn(&Watch::addCallback), this,
41                        std::placeholders::_1)),
42     delMatch(bus,
43              sdbusplus::bus::match::rules::interfacesRemoved() +
44                  sdbusplus::bus::match::rules::path_namespace(OBJ_LOGGING),
45              std::bind(std::mem_fn(&Watch::delCallback), this,
46                        std::placeholders::_1))
47 {
48     std::filesystem::path file(ELOG_ID_PERSIST_PATH);
49     if (std::filesystem::exists(file))
50     {
51         if (!deserialize(ELOG_ID_PERSIST_PATH, elogList))
52         {
53             lg2::error("Error occurred during error id deserialize");
54         }
55     }
56 }
57 
58 void Watch::addCallback(sdbusplus::message_t& msg)
59 {
60     using QuotaExceeded =
61         sdbusplus::xyz::openbmc_project::Dump::Create::Error::QuotaExceeded;
62 
63     sdbusplus::message::object_path objectPath;
64     PropertyMap propertyMap;
65     try
66     {
67         msg.read(objectPath, propertyMap);
68     }
69     catch (const sdbusplus::exception_t& e)
70     {
71         lg2::error("Failed to parse elog add signal, errormsg: {ERROR}, "
72                    "REPLY_SIG: {REPLY_SIG}",
73                    "ERROR", e, "REPLY_SIG", msg.get_signature());
74         return;
75     }
76 
77     std::size_t found = objectPath.str.find("entry");
78     if (found == std::string::npos)
79     {
80         // Not a new error entry skip
81         return;
82     }
83 
84     auto eId = getEid(objectPath);
85 
86     auto search = elogList.find(eId);
87     if (search != elogList.end())
88     {
89         // elog exists in the list, Skip the dump
90         return;
91     }
92 
93     auto iter = propertyMap.find("xyz.openbmc_project.Logging.Entry");
94     if (iter == propertyMap.end())
95     {
96         return;
97     }
98 
99     auto attr = iter->second.find("Message");
100     if (attr == iter->second.end())
101     {
102         return;
103     }
104 
105     auto& data = std::get<PropertyName>(attr->second);
106     if (data.empty())
107     {
108         // No Message skip
109         return;
110     }
111 
112     EType errorType;
113     for (const auto& [type, errorList] : errorMap)
114     {
115         auto error = std::find(errorList.begin(), errorList.end(), data);
116         if (error != errorList.end())
117         {
118             errorType = type;
119             break;
120         }
121     }
122 
123     // error not supported in the configuration
124     if (errorType.empty())
125     {
126         return;
127     }
128 
129     std::vector<std::string> fullPaths;
130     fullPaths.push_back(objectPath);
131 
132     try
133     {
134         // Save the elog information. This is to avoid dump requests
135         // in elog restore path.
136         elogList.insert(eId);
137 
138         phosphor::dump::elog::serialize(elogList);
139 
140         auto item = std::find_if(phosphor::dump::bmc::TypeMap.begin(),
141                                  phosphor::dump::bmc::TypeMap.end(),
142                                  [errorType](const auto& err) {
143             return (err.second == errorType);
144         });
145         if (item != phosphor::dump::bmc::TypeMap.end())
146         {
147             iMgr.IMgr::create((*item).first, fullPaths);
148         }
149     }
150     catch (const QuotaExceeded& e)
151     {
152         // No action now
153     }
154     return;
155 }
156 
157 void Watch::delCallback(sdbusplus::message_t& msg)
158 {
159     sdbusplus::message::object_path objectPath;
160     try
161     {
162         msg.read(objectPath);
163     }
164     catch (const sdbusplus::exception_t& e)
165     {
166         lg2::error("Failed to parse elog del signal, errormsg: {ERROR}, "
167                    "REPLY_SIG: {REPLY_SIG}",
168                    "ERROR", e, "REPLY_SIG", msg.get_signature());
169         return;
170     }
171 
172     std::size_t found = objectPath.str.find("entry");
173     if (found == std::string::npos)
174     {
175         // Not a error entry so skip
176         return;
177     }
178 
179     // Get elog id
180     auto eId = getEid(objectPath);
181 
182     // Delete the elog entry from the list and serialize
183     auto search = elogList.find(eId);
184     if (search != elogList.end())
185     {
186         elogList.erase(search);
187         phosphor::dump::elog::serialize(elogList);
188     }
189 }
190 
191 } // namespace elog
192 } // namespace dump
193 } // namespace phosphor
194