ddlScript(set_id, script, only_on_node) Generates a SYNC event, runs the script on the origin, and then generates a DDL_SCRIPT event to request it to be run on replicated slaves.
declare
p_set_id alias for $1;
p_script alias for $2;
p_only_on_node alias for $3;
v_set_origin int4;
begin
-- ----
-- Grab the central configuration lock
-- ----
lock table sl_config_lock;
-- ----
-- Check that the set exists and originates here
-- ----
select set_origin into v_set_origin
from sl_set
where set_id = p_set_id
for update;
if not found then
raise exception 'Slony-I: set % not found', p_set_id;
end if;
if v_set_origin <> getLocalNodeId('_schemadoc') then
raise exception 'Slony-I: set % does not originate on local node',
p_set_id;
end if;
-- ----
-- Create a SYNC event, run the script and generate the DDL_SCRIPT event
-- ----
perform createEvent('_schemadoc', 'SYNC', NULL);
perform ddlScript_int(p_set_id, p_script, p_only_on_node);
perform updateRelname(p_set_id, p_only_on_node);
return createEvent('_schemadoc', 'DDL_SCRIPT',
p_set_id, p_script, p_only_on_node);
end;