Store the last action time in session info

Add a timestamp member in SessionStat to capture when the session
sees activity last, and update it with every action. The timestamp
will be used to check when the session should expire.

Signed-off-by: Kun Yi <kunyi731@gmail.com>
Change-Id: Ic781d54173099bff76b3c37dd296521680fe7986

1 files changed, 8 insertions, 0 deletions

diff --git a/manager.hpp b/manager.hpp
index 1c04c6a..e7a9a97 100644
--- a/manager.hpp
+++ b/manager.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <blobs-ipmid/blobs.hpp>
+#include <chrono>
 #include <ctime>
 #include <ipmid/oemrouter.hpp>
 #include <memory>
@@ -35,6 +36,12 @@ struct SessionInfo
     std::string blobId;
     GenericBlobInterface* handler;
     uint16_t flags;
+
+    /* Initially set during open(). read/write/writeMeta/commit/stat operations
+     * would update it.
+     */
+    std::chrono::time_point<std::chrono::steady_clock> lastActionTime =
+        std::chrono::steady_clock::now();
 };
 
 class ManagerInterface
@@ -249,6 +256,7 @@ class BlobManager : public ManagerInterface
         if (auto item = sessions.find(session);
             item != sessions.end() && (item->second.flags & requiredFlags))
         {
+            item->second.lastActionTime = std::chrono::steady_clock::now();
             return item->second.handler;
         }
         return nullptr;