Parse and verify the RAS data files
When analyzing an attention, the appropriate RAS actions are documented
in the RAS data files. Those data files will need to be read and
validated against the JSON schema before applying the RAS action.
Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: I127ae1a50bb5b5f4c160ce9fdeaeeb1d041661a0
diff --git a/analyzer/apply_ras_actions.cpp b/analyzer/apply_ras_actions.cpp
index 718efb5..48421e7 100644
--- a/analyzer/apply_ras_actions.cpp
+++ b/analyzer/apply_ras_actions.cpp
@@ -1,12 +1,98 @@
#include <analyzer/service_data.hpp>
+#include <hei_main.hpp>
+#include <nlohmann/json.hpp>
+#include <util/data_file.hpp>
+#include <util/trace.hpp>
+
+#include <filesystem>
+#include <fstream>
+#include <string>
+
+namespace fs = std::filesystem;
namespace analyzer
{
//------------------------------------------------------------------------------
+// Returns the RAS data schema file. Will throw exceptions if the file does not
+// exist, is unreadable, or is malformed JSON.
+nlohmann::json __getSchemaFile()
+{
+ // Search all the files in the package `schema` subdirectory and find the
+ // file named `ras-data-schema.json`.
+ fs::path dirPath{PACKAGE_DIR "schema"};
+ std::vector<fs::path> files;
+ util::findFiles(dirPath, R"(ras-data-schema\.json)", files);
+ assert(1 == files.size()); // Should be one, and only one, file.
+
+ // Trace the file for debug.
+ trace::inf("File found: path=%s", files.front().string().c_str());
+
+ // Open the file.
+ std::ifstream file{files.front()};
+ assert(file.good()); // The file must be readable.
+
+ // Parse and return the JSON. Note that this will throw an exception if the
+ // file is not properly formatted.
+ return nlohmann::json::parse(file);
+}
+
+//------------------------------------------------------------------------------
+
+void __getDataFiles(std::map<libhei::ChipType_t, nlohmann::json>& o_files)
+{
+ o_files.clear(); // initially empty
+
+ // Get the schema document for the data files.
+ const auto schema = __getSchemaFile();
+
+ // Get all JSON files in the package `data` subdirectory.
+ fs::path dirPath{PACKAGE_DIR "ras-data"};
+ std::vector<fs::path> files;
+ util::findFiles(dirPath, R"(.*\.json)", files);
+
+ for (const auto& path : files)
+ {
+ // Trace each data file for debug.
+ trace::inf("File found: path=%s", path.string().c_str());
+
+ // Open the file.
+ std::ifstream file{path};
+ assert(file.good()); // The file must be readable.
+
+ // Parse the JSON. Note that this will throw an exception if the
+ // file is not properly formatted.
+ const auto data = nlohmann::json::parse(file);
+
+ // Validate the data against the schema.
+ assert(util::validateJson(schema, data));
+
+ // Get the chip model/EC level from the data. The value is currently
+ // stored as a string representation of the hex value. So it will have
+ // to be converted to an integer.
+ libhei::ChipType_t chipType =
+ std::stoul(data.at("model_ec").get<std::string>(), 0, 16);
+
+ // So far, so good. Add the entry.
+ auto ret = o_files.emplace(chipType, data);
+ assert(ret.second); // Should not have duplicate entries
+ }
+}
+
+//------------------------------------------------------------------------------
+
void applyRasActions(ServiceData& io_servData)
{
+ // Find all of the existing chip data files.
+ std::map<libhei::ChipType_t, nlohmann::json> files;
+ __getDataFiles(files);
+
+ // Get the RAS data file for this signature's chip type.
+ auto rootCause = io_servData.getRootCause();
+ auto rasData_itr = files.find(rootCause.getChip().getType());
+ assert(files.end() != rasData_itr); // the data file must exist
+
// TODO: finish implementing
// The default action is to callout level 2 support.