PEL: Add repository to save PELs

Create the Repository class that can save PELs in (and later retrieve
them from) the filesystem.  It provides an add() method that can add
a PEL object to the repository.

Now, when the Manager class sees an OpenBMC event log created with the
RAWPEL metadata in the AdditionalData property that points at a file
that contains a PEL, it can save that PEL.  Before the PEL is saved, the
log ID and commit timestamp fields in the PEL will be updated - the log
ID to a unique value, and the timestamp to the current time.

Change-Id: I8dbaddf0f155bcb6d40b933294ada83feb75ce53
diff --git a/test/openpower-pels/pel_manager_test.cpp b/test/openpower-pels/pel_manager_test.cpp
new file mode 100644
index 0000000..a5b16f5
--- /dev/null
+++ b/test/openpower-pels/pel_manager_test.cpp
@@ -0,0 +1,66 @@
+#include "extensions/openpower-pels/manager.hpp"
+#include "log_manager.hpp"
+#include "pel_utils.hpp"
+
+#include <fstream>
+#include <regex>
+
+#include <gtest/gtest.h>
+
+using namespace openpower::pels;
+namespace fs = std::filesystem;
+
+class ManagerTest : public CleanPELFiles
+{
+};
+
+fs::path makeTempDir()
+{
+    char path[] = "/tmp/tempnameXXXXXX";
+    std::filesystem::path dir = mkdtemp(path);
+    return dir;
+}
+
+// Test that using the RAWPEL=<file> with the Manager::create() call gets
+// a PEL saved in the repository.
+TEST_F(ManagerTest, TestCreateWithPEL)
+{
+    auto bus = sdbusplus::bus::new_default();
+    phosphor::logging::internal::Manager logManager(bus, "logging_path");
+
+    openpower::pels::Manager manager{logManager};
+
+    // Create a PEL, write it to a file, and pass that filename into
+    // the create function.
+    auto data = pelDataFactory(TestPelType::pelSimple);
+
+    fs::path pelFilename = makeTempDir() / "rawpel";
+    std::ofstream pelFile{pelFilename};
+    pelFile.write(reinterpret_cast<const char*>(data->data()), data->size());
+    pelFile.close();
+
+    std::string adItem = "RAWPEL=" + pelFilename.string();
+    std::vector<std::string> additionalData{adItem};
+    std::vector<std::string> associations;
+
+    manager.create("error message", 42, 0, Entry::Level::Error, additionalData,
+                   associations);
+
+    // We don't know the exact name, but a file should have been added to the
+    // repo of the form <timestamp>_<ID>
+    std::regex expr{"\\d+_\\d+"};
+
+    bool found = false;
+    for (auto& f : fs::directory_iterator(getPELRepoPath() / "logs"))
+    {
+        if (std::regex_search(f.path().string(), expr))
+        {
+            found = true;
+            break;
+        }
+    }
+
+    EXPECT_TRUE(found);
+
+    fs::remove_all(pelFilename.parent_path());
+}