db: view: pass base table to view_update_builder

To be used by generate_update() for getting the
tombstone_gc_state via the table's compaction_manager.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>

db/view/view.cc

@@ -1278,6 +1278,7 @@ future<stop_iteration> view_update_builder::on_results() {
 }
 
 view_update_builder make_view_update_builder(
+        const replica::table& base_table,
         const schema_ptr& base,
         std::vector<view_and_base>&& views_to_update,
         flat_mutation_reader_v2&& updates,
@@ -1291,7 +1292,7 @@ view_update_builder make_view_update_builder(
         }
         return view_updates(std::move(v));
     }));
-    return view_update_builder(base, std::move(vs), std::move(updates), std::move(existings), now);
+    return view_update_builder(base_table, base, std::move(vs), std::move(updates), std::move(existings), now);
 }
 
 future<query::clustering_row_ranges> calculate_affected_clustering_ranges(const schema& base,

db/view/view.hh

@@ -206,6 +206,10 @@ private:
 };
 
 class view_update_builder {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-private-field"
+    const replica::table& _base;
+#pragma GCC diagnostic pop
     schema_ptr _schema; // The base schema
     std::vector<view_updates> _view_updates;
     flat_mutation_reader_v2 _updates;
@@ -220,12 +224,13 @@ class view_update_builder {
     partition_key _key = partition_key::make_empty();
 public:
 
-    view_update_builder(schema_ptr s,
+    view_update_builder(const replica::table& base, schema_ptr s,
         std::vector<view_updates>&& views_to_update,
         flat_mutation_reader_v2&& updates,
         flat_mutation_reader_v2_opt&& existings,
         gc_clock::time_point now)
-            : _schema(std::move(s))
+            : _base(base)
+            , _schema(std::move(s))
             , _view_updates(std::move(views_to_update))
             , _updates(std::move(updates))
             , _existings(std::move(existings))
@@ -249,7 +254,8 @@ private:
 };
 
 view_update_builder make_view_update_builder(
-        const schema_ptr& base,
+        const replica::table& base_table,
+        const schema_ptr& base_schema,
         std::vector<view_and_base>&& views_to_update,
         flat_mutation_reader_v2&& updates,
         flat_mutation_reader_v2_opt&& existings,

replica/table.cc

@@ -1696,6 +1696,7 @@ future<> table::generate_and_propagate_view_updates(const schema_ptr& base,
         gc_clock::time_point now) const {
     auto base_token = m.token();
     db::view::view_update_builder builder = db::view::make_view_update_builder(
+            *this,
             base,
             std::move(views),
             make_flat_mutation_reader_from_mutations_v2(m.schema(), std::move(permit), std::move(m)),
@@ -1831,6 +1832,7 @@ future<> table::populate_views(
         gc_clock::time_point now) {
     auto schema = reader.schema();
     db::view::view_update_builder builder = db::view::make_view_update_builder(
+            *this,
             schema,
             std::move(views),
             std::move(reader),