lok: capture and publish the modified status in save result

This is necessary to flag to the storage whether or not
the contents of the file being uploaded has any user
modifications or not. This is typically used to optimize
the versioning and storage utilization.

We also add the time when saving started and the duration
it took. The timestamp is to figure out if there has been
subsequent activity/commands that could have modified
the document. The duration is to help Online throttle
saving if too frequent.

Signed-off-by: Ashod Nakashian <ashod.nakashian@collabora.co.uk>
Change-Id: Id6d8e629ef9b6e723d1d8b84d64fc7741b997bc5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/149985
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/desktop/source/lib/init.cxx b/desktop/source/lib/init.cxx
index 0521af8b427a..49d4298c7a66 100644
--- a/desktop/source/lib/init.cxx
+++ b/desktop/source/lib/init.cxx
@@ -4612,13 +4612,17 @@ namespace {
 */
 class DispatchResultListener : public cppu::WeakImplHelper<css::frame::XDispatchResultListener>
 {
-    OString maCommand;                 ///< Command for which this is the result.
-    std::shared_ptr<CallbackFlushHandler> mpCallback; ///< Callback to call.
+    const OString maCommand; ///< Command for which this is the result.
+    const std::shared_ptr<CallbackFlushHandler> mpCallback; ///< Callback to call.
+    const std::chrono::steady_clock::time_point mSaveTime; //< The time we started saving.
+    const bool mbWasModified; //< Whether or not the document was modified before saving.
 
 public:
     DispatchResultListener(const char* pCommand, std::shared_ptr<CallbackFlushHandler> pCallback)
         : maCommand(pCommand)
         , mpCallback(std::move(pCallback))
+        , mSaveTime(std::chrono::steady_clock::now())
+        , mbWasModified(SfxObjectShell::Current()->IsModified())
     {
         assert(mpCallback);
     }
@@ -4635,6 +4639,14 @@ public:
         }
 
         unoAnyToJson(aJson, "result", rEvent.Result);
+        aJson.put("wasModified", mbWasModified);
+        aJson.put("startUnixTimeMics",
+                  std::chrono::time_point_cast<std::chrono::microseconds>(mSaveTime)
+                      .time_since_epoch()
+                      .count());
+        aJson.put("saveDurationMics", std::chrono::duration_cast<std::chrono::microseconds>(
+                                          std::chrono::steady_clock::now() - mSaveTime)
+                                          .count());
         mpCallback->queue(LOK_CALLBACK_UNO_COMMAND_RESULT, aJson.finishAndGetAsOString());
     }