Unistore: Add generation column (#102222)

pkg/storage/unified/sql/data/resource_history_insert.sql

@@ -10,6 +10,7 @@ INSERT INTO {{ .Ident "resource_history" }}
         {{ .Ident "resource_version" }},
         {{ end }}
         {{ .Ident "previous_resource_version"}},
+        {{ .Ident "generation"}},
         {{ .Ident "value" }},
         {{ .Ident "action" }}
     )
@@ -25,6 +26,7 @@ INSERT INTO {{ .Ident "resource_history" }}
         {{ .Arg .ResourceVersion }},
         {{ end }}
         {{ .Arg .WriteEvent.PreviousRV }},
+        {{ .Arg .Generation }},
         {{ .Arg .WriteEvent.Value }},
         {{ .Arg .WriteEvent.Type }}
     )

pkg/storage/unified/sql/data/resource_history_prune.sql

@@ -5,19 +5,23 @@ WHERE {{ .Ident "guid" }} IN (
   SELECT
     {{ .Ident "guid" }},
     ROW_NUMBER() OVER (
-      PARTITION BY
-        {{ .Ident "namespace" }},
-        {{ .Ident "group" }},
-        {{ .Ident "resource" }},
-        {{ .Ident "name" }}
+      PARTITION BY {{ .Ident "namespace" }}
+        , {{ .Ident "group" }}
+        , {{ .Ident "resource" }}
+        , {{ .Ident "name" }}
+        {{ if .PartitionByGeneration }}
+        , {{ .Ident "generation" }}
+        {{ end }}
       ORDER BY {{ .Ident "resource_version" }} DESC
     ) AS {{ .Ident "rn" }}
   FROM {{ .Ident "resource_history" }}
-  WHERE
-    {{ .Ident "namespace" }} = {{ .Arg .Key.Namespace }}
+  WHERE {{ .Ident "namespace" }} = {{ .Arg .Key.Namespace }}
     AND {{ .Ident "group" }} = {{ .Arg .Key.Group }}
     AND {{ .Ident "resource" }} = {{ .Arg .Key.Resource }}
     AND {{ .Ident "name" }} = {{ .Arg .Key.Name }}
+    {{ if .PartitionByGeneration }}
+    AND {{ .Ident "generation" }} > 0
+    {{ end }}
   ) AS {{ .Ident "ranked" }}
   WHERE {{ .Ident "rn" }} > {{ .Arg .HistoryLimit }}
 );