[Sync] Implement garbage collection by age for directory.
For age out, we only do it once a day, because garbage collection will
scan all the directory entries for that datatype, and for heavy user,
this will be expensive.
BUG=347253, 702020
Review-Url: https://codereview.chromium.org/2966623002
Cr-Commit-Position: refs/heads/master@{#484370}
diff --git a/components/sync/engine_impl/process_updates_util.cc b/components/sync/engine_impl/process_updates_util.cc
index 0592b52..fbbdd22 100644
--- a/components/sync/engine_impl/process_updates_util.cc
+++ b/components/sync/engine_impl/process_updates_util.cc
@@ -331,4 +331,30 @@
}
}
+void ExpireEntriesByAge(syncable::Directory* dir,
+ syncable::ModelNeutralWriteTransaction* trans,
+ ModelType type,
+ int32_t age_watermark_in_days) {
+ syncable::Directory::Metahandles handles;
+ base::Time to_be_expired =
+ base::Time::Now() - base::TimeDelta::FromDays(age_watermark_in_days);
+ dir->GetMetaHandlesOfType(trans, type, &handles);
+ for (size_t i = 0; i < handles.size(); ++i) {
+ syncable::ModelNeutralMutableEntry entry(trans, syncable::GET_BY_HANDLE,
+ handles[i]);
+ if (!entry.good() || !entry.GetId().ServerKnows() ||
+ entry.GetUniqueServerTag() == ModelTypeToRootTag(type) ||
+ entry.GetIsUnappliedUpdate() || entry.GetIsUnsynced() ||
+ entry.GetIsDel() || entry.GetServerIsDel() ||
+ entry.GetMtime() > to_be_expired) {
+ continue;
+ }
+
+ // Mark entry as unapplied update first to ensure journaling the deletion.
+ entry.PutIsUnappliedUpdate(true);
+ // Mark entry as deleted by server.
+ entry.PutServerIsDel(true);
+ }
+}
+
} // namespace syncer
