merge: #3375

3375: fix(dal): Migrate deleted component summary data r=vbustamante a=sprutton1

<img src="https://media2.giphy.com/media/xVudSZL97djWljDzvg/giphy-downsized-medium.gif"/>

Due to issues with delete failing to update summaries correctly, we have some components stranded on a graph (zombies). This migration will clean up the zombie components by updating the summary tables to match the components tables.

Co-authored-by: Victor Bustamante <[email protected]>

lib/dal/src/migrations/U2614__correct_deleted_components_on_summary.sql

@@ -0,0 +1,59 @@
+-- This exists to fix bad summaries for deleted components pre migration U2613
+
+-- Created and deleted on the same changeset
+-- if there is a component with deleted not null and a fully matching (id, changeset, workspace) summary,
+-- update summary with deletion data
+UPDATE summary_diagram_components sc SET
+    visibility_deleted_at = c.visibility_deleted_at,
+    change_status = 'deleted',
+    deleted_info = jsonb_build_object(
+         'actor', jsonb_build_object('kind', 'system', 'label', 'migration 2614'),
+         'timestamp', now()
+                )
+FROM components c
+WHERE c.visibility_change_set_pk = sc.visibility_change_set_pk
+  AND c.tenancy_workspace_pk = sc.tenancy_workspace_pk
+  AND c.tenancy_workspace_pk != ident_nil_v1()
+  AND c.id = sc.component_id
+  AND c.visibility_deleted_at IS NOT NULL;
+
+-- Things got merged and deleted on changeset
+-- There's no summary entry on the changeset the component got deleted, so we insert it
+INSERT INTO summary_diagram_components (id, tenancy_workspace_pk, visibility_change_set_pk,
+                                        visibility_deleted_at, created_at, component_id,
+                                        display_name, node_id, schema_name,
+                                        schema_id, schema_variant_id,
+                                        schema_variant_name, schema_category, position, size, color, node_type,
+                                        change_status, has_resource, created_info, updated_info, deleted_info,
+                                        sockets, parent_node_id, child_node_ids)
+SELECT
+    head_sc.id, head_sc.tenancy_workspace_pk, c.visibility_change_set_pk,
+    c.visibility_deleted_at, head_sc.created_at, head_sc.component_id,
+    head_sc.display_name, head_sc.node_id, head_sc.schema_name,
+    head_sc.schema_id, head_sc.schema_variant_id,
+    head_sc.schema_variant_name, head_sc.schema_category, head_sc.position, head_sc.size, head_sc.color, head_sc.node_type,
+    'deleted', head_sc.has_resource, head_sc.created_info, head_sc.updated_info,
+    jsonb_build_object( -- deleted info
+            'actor', jsonb_build_object('kind', 'system', 'label', 'migration 2614'),
+            'timestamp', now()
+    ),
+    head_sc.sockets, head_sc.parent_node_id, head_sc.child_node_ids
+FROM components c
+    -- This + `filter_sc.id IS NULL` at the end is an outer left join, which means
+    -- only get components that dont have a fully matching summaries
+    LEFT JOIN summary_diagram_components filter_sc ON
+        c.id = filter_sc.component_id AND
+        c.visibility_change_set_pk = filter_sc.visibility_change_set_pk AND
+        c.tenancy_workspace_pk = filter_sc.tenancy_workspace_pk
+    -- get matching head summaries (which always exist in this case)
+    JOIN summary_diagram_components head_sc ON
+        c.id = head_sc.component_id AND
+        head_sc.visibility_change_set_pk = ident_nil_v1() AND
+        c.tenancy_workspace_pk = head_sc.tenancy_workspace_pk
+    -- Do this for deleted components with no head version
+    WHERE c.visibility_deleted_at IS NOT NULL
+      AND c.visibility_change_set_pk != ident_nil_v1()
+      AND c.tenancy_workspace_pk != ident_nil_v1()
+      AND filter_sc.id IS NULL;
+
+