Include a db migration

deployment/hasura/migrations/Aerie/8_span_event_linkage/down.sql

@@ -0,0 +1,51 @@
+-- event table revert
+alter table merlin.event
+  drop column span_id;
+
+-- span table revert
+alter table merlin.span
+  alter column span_id add generated by default as identity;
+
+select setval(pg_get_serial_sequence('merlin.span', 'span_id'), coalesce(max(span_id),0) + 1, false) FROM merlin.span;
+
+with conflicts as (
+ with subTable as (
+    select p.span_id,
+           p.dataset_id,
+           ROW_NUMBER() over(partition by p.span_id order by p.dataset_id) as rk
+    from merlin.span p)
+  select s.*
+  from subTable s
+  where s.rk > 1)
+update merlin.span s
+    set span_id = nextval(pg_get_serial_sequence('merlin.span', 'span_id'))
+    from conflicts c
+    where (c.span_id, c.dataset_id) = (s.span_id, s.dataset_id);
+
+alter table merlin.span
+  rename column span_id to id;
+
+alter table merlin.span
+  alter column id set generated always;
+
+drop view merlin.simulated_activity;
+create view merlin.simulated_activity as
+(
+  select span.id as id,
+         sd.id as simulation_dataset_id,
+         span.parent_id as parent_id,
+         span.start_offset as start_offset,
+         span.duration as duration,
+         span.attributes as attributes,
+         span.type as activity_type_name,
+         (span.attributes#>>'{directiveId}')::integer as directive_id,
+         sd.simulation_start_time + span.start_offset as start_time,
+         sd.simulation_start_time + span.start_offset + span.duration as end_time
+   from merlin.span span
+     join merlin.dataset d on span.dataset_id = d.id
+     join merlin.simulation_dataset sd on d.id = sd.dataset_id
+     join merlin.simulation s on s.id = sd.simulation_id
+);
+
+call migrations.mark_migration_rolled_back('8')
+

deployment/hasura/migrations/Aerie/8_span_event_linkage/up.sql

@@ -0,0 +1,31 @@
+-- Span Table update
+alter table merlin.span
+  rename column id to span_id;
+
+alter table merlin.span
+  alter column span_id drop identity;
+
+drop view merlin.simulated_activity;
+create view merlin.simulated_activity as
+(
+select span.span_id as id,
+       sd.id as simulation_dataset_id,
+       span.parent_id as parent_id,
+       span.start_offset as start_offset,
+       span.duration as duration,
+       span.attributes as attributes,
+       span.type as activity_type_name,
+       (span.attributes#>>'{directiveId}')::integer as directive_id,
+       sd.simulation_start_time + span.start_offset as start_time,
+       sd.simulation_start_time + span.start_offset + span.duration as end_time
+from merlin.span span
+       join merlin.dataset d on span.dataset_id = d.id
+       join merlin.simulation_dataset sd on d.id = sd.dataset_id
+       join merlin.simulation s on s.id = sd.simulation_id
+  );
+
+-- event table update
+alter table merlin.event
+  add column span_id integer;
+
+call migrations.mark_migration_applied('8')

deployment/postgres-init-db/sql/applied_migrations.sql

@@ -10,3 +10,4 @@ call migrations.mark_migration_applied('4');
 call migrations.mark_migration_applied('5');
 call migrations.mark_migration_applied('6');
 call migrations.mark_migration_applied('7');
+call migrations.mark_migration_applied('8');