Restore dump d-bus objects during daemon starts

Use the dump files in the persistant location to rebuild the
d-bus objects.

Change-Id: Ia7b478649274a4681c802e11be4b2049eeed8e13
Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>

1 files changed, 30 insertions, 1 deletions

diff --git a/dump_manager.cpp b/dump_manager.cpp
index 7e753c0..3775842 100644
--- a/dump_manager.cpp
+++ b/dump_manager.cpp
@@ -16,7 +16,6 @@ namespace dump
 
 using namespace sdbusplus::xyz::openbmc_project::Common::Error;
 using namespace phosphor::logging;
-using namespace std;
 
 namespace internal
 {
@@ -170,5 +169,35 @@ void Manager::removeWatch(const fs::path& path)
     childWatchMap.erase(path);
 }
 
+void Manager::restore()
+{
+    fs::path dir(BMC_DUMP_PATH);
+    if (!fs::exists(dir) || fs::is_empty(dir))
+    {
+        return;
+    }
+
+    //Dump file path: <BMC_DUMP_PATH>/<id>/<filename>
+    for (const auto& p : fs::directory_iterator(dir))
+    {
+        auto idStr = p.path().filename().string();
+
+        //Consider only directory's with dump id as name.
+        //Note: As per design one file per directory.
+        if ((fs::is_directory(p.path())) &&
+            std::all_of(idStr.begin(), idStr.end(), ::isdigit))
+        {
+            lastEntryId = std::max(lastEntryId,
+                                   static_cast<uint32_t>(std::stoul(idStr)));
+            auto fileIt = fs::directory_iterator(p.path());
+            //Create dump entry d-bus object.
+            if (fileIt != fs::end(fileIt))
+            {
+                createEntry(fileIt->path());
+            }
+        }
+    }
+}
+
 } //namespace dump
 } //namespace phosphor